:root {
    /* Dark Theme Palette */
    --bg-color-darkest: #1e1e1e;
    --bg-color-dark: #252526;
    --bg-color-medium: #333333;
    --bg-color-light: #3c3c3c;
    --border-color: #404040; /* Softened border color */
    --text-color-primary: #cccccc;
    --text-color-secondary: #999999;
    --accent-color-primary: #007acc;
    --accent-color-hover: #0095ff;
    --accent-color-secondary: #5f5f5f;
    --accent-color-secondary-hover: #7a7a7a;
    --error-color: #f44747;
    --success-color: #4ec9b0;
    --font-family: 'Roboto', sans-serif;
    --resizer-width: 5px; /* Width of the draggable resizer handle */
    --left-panel-width: 360px;  /* Default width for the left panel */
    --right-panel-width: 300px; /* Default width for the right panel */
    --right-panel-collapsed-width: 24px; /* Slimmer collapsed panel */
    --enkesit-viewport-height: 50%; /* Default split height */
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color-darkest);
    color: var(--text-color-primary);
    line-height: 1.5;
    display: grid;
    grid-template-rows: auto 1fr auto auto; /* header, main, quick-commands, footer */
    height: 100%;
}

/* Class added during panel resizing to prevent text selection */
body.resizing-vertical {
    cursor: col-resize !important;
    user-select: none;
}
body.resizing-horizontal {
    cursor: row-resize !important;
    user-select: none;
}


/* --- APP LAYOUT --- */
.app-header {
    background-color: var(--bg-color-dark);
    padding: 0.3rem 1rem; /* Compact header */
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color-primary);
    font-size: 1rem;
    font-weight: 500;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.main-container {
    display: grid;
    /* 5-column grid for resizable panels */
    grid-template-columns: var(--left-panel-width) var(--resizer-width) 1fr var(--resizer-width) var(--right-panel-width);
    gap: 0; /* Gap is handled by resizer elements now */
    padding: 6px 0;
    overflow: hidden;
    transition: grid-template-columns 0.3s ease-in-out;
}

.left-panel, .viewport-container, #plan-viewport-container {
    background-color: var(--bg-color-dark);
    border: 1px solid var(--border-color);
    border-radius: 3px; /* Softer radius */
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.quick-commands-bar {
    background-color: var(--bg-color-dark);
    padding: 0.1rem 0.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.quick-commands-bar .icon-bar-button {
    width: 24px;
    height: 24px;
    padding: 2px;
}
.quick-commands-bar .icon-bar-button.active {
    color: var(--accent-color-hover);
    background-color: var(--bg-color-light);
}

.app-footer {
    background-color: var(--bg-color-dark);
    padding: 0.5rem 1rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* --- LEFT PANEL (TOOLSPACE) --- */
.left-panel {
    display: flex;
    flex-direction: row;
    background-color: #2F2F2F;
}

.toolspace-icon-bar {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 0rem 0.5rem 0;
    background-color: var(--bg-color-darkest);
    width:36px;
    flex-shrink: 0;
}

.icon-bar-button {
    position: relative; /* For active indicator */
    width: 36px;
    height: 36px;
    padding: 6px;
    cursor: pointer;
    border: none;
    background: none;
    border-radius: 4px; /* Added for softer corners */
    color: var(--text-color-secondary);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}
.icon-bar-button svg {
    width: 100%;
    height: 100%;
}
.icon-bar-button.active {
    color: var(--text-color-primary);
    background-color: #2F2F2F;
}
#toolspace-tabs .icon-bar-button.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 25%;
    bottom: 25%;
    width: 3px;
    background-color: var(--accent-color-primary);
    border-radius: 3px;
}
.icon-bar-button:hover:not(.active) {
    background-color: var(--bg-color-medium);
    color: var(--text-color-primary);
}

.toolspace-content-wrapper {
    flex-grow: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.toolspace-content {
    display: none;
}
.toolspace-content.active {
    display: flex;
    flex-direction: column;
    height: 100%;
}
.toolspace-content#toolbox-content {
    padding: 0;
}

.prospector-header {
    padding: 0.8rem;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.panel-content {
    padding: 0.8rem;
    overflow-y: auto;
    flex-grow: 1;
}

/* Prospector Tree */
.prospector-tree, .prospector-tree ul {
    list-style: none;
    padding-left: 0;
    user-select: none;
}
.prospector-tree {
    font-size: 0.85rem; /* Smaller font for tree */
}

.prospector-tree li {
    /* Container for tree item content and nested lists */
}

.tree-item-content {
    padding: 0.15rem 0.5rem; /* Compact items */
    cursor: pointer;
    border-radius: 3px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.prospector-tree .tree-item-content:hover {
    background-color: var(--bg-color-light);
}

.prospector-tree li.selected > .tree-item-content {
    background-color: #555555;
    color: #fff;
}

.prospector-tree li.active-alignment .tree-item-name {
    font-weight: bold;
    color: var(--accent-color-hover);
}
.prospector-tree li.active-alignment .tree-item-icon {
    color: var(--accent-color-hover);
}
.prospector-tree li.active-alignment .tree-item-icon.target-icon {
    opacity: 1;
}


.tree-item-name {
    flex-grow: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* NEW: Special styling for the rich project root node */
.tree-project-root {
    background-color: var(--bg-color-darkest);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.6rem 0.8rem;
    margin: 0.5rem 0;
    cursor: default;
    display: block; /* Allow block children to stack */
}
.prospector-tree li[data-type="project"]:hover > .tree-project-root {
    background-color: var(--bg-color-darkest); /* Override hover effect */
}
.tree-project-root .project-info-name {
    display: block;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--accent-color-hover);
    white-space: normal;
    overflow-wrap: break-word;
    line-height: 1.2;
}
.tree-project-root .project-info-crs {
    display: block;
    font-size: 0.75rem;
    color: var(--text-color-secondary);
    white-space: normal;
    overflow-wrap: break-word;
    line-height: 1.2;
    margin-top: 0.2rem;
}

.prospector-tree > ul {
    margin-top: 0.5rem;
}
.prospector-tree ul ul {
    margin-left: 0.8rem;
    padding-left: 0;
}

/* Styling for nested Özel Alan ranges */
.prospector-tree ul ul ul {
    margin-left: 1.2rem;
    padding-left: 0.8rem;
}
.prospector-tree ul ul ul .tree-item-content {
    padding-left: 0.5rem;
    gap: 0.2rem;
}
.prospector-tree ul ul ul li.selected > .tree-item-content {
    background-color: #555555;
    color: #fff;
}


.prospector-tree .tree-toggle {
    cursor: pointer;
    width: 16px;
    height: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-family: monospace;
    opacity: 0.7;
    transition: transform 0.2s, opacity 0.2s;
}
.prospector-tree .tree-toggle:hover {
    opacity: 1;
}
.prospector-tree .icon {
    width: 16px;
    height: 16px;
    opacity: 0.8;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.prospector-tree .icon svg {
    width: 100%;
    height: 100%;
}
.prospector-tree .icon.target-icon {
    width: 14px;
    height: 14px;
    color: var(--accent-color-primary);
    opacity: 0; /* Hidden by default */
}


.visibility-toggle {
    cursor: pointer;
    opacity: 0.85;
    transition: all 0.2s;
    font-size: 16px;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    border: none;
    background-color: transparent;
    padding: 0;
    color: inherit;
    margin: 0 0.2rem;
}

.visibility-toggle:hover {
    opacity: 1;
    transform: scale(1.1);
    background-color: transparent;
}

.visibility-toggle.hidden-state {
    opacity: 0.4;
    filter: grayscale(1);
}

.visibility-toggle.hidden-state:hover {
    opacity: 0.7; /* Override the default hover opacity */
    background-color: transparent;
}



/* --- RIGHT PANEL & RESIZERS --- */
.panel-resizer-vertical {
    background-color: var(--bg-color-darkest);
    cursor: col-resize;
    transition: background-color 0.2s ease;
}
.panel-resizer-vertical:hover {
    background-color: var(--accent-color-primary);
}


.right-panel {
    background-color: var(--bg-color-dark);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    width: 100%; /* Will be controlled by grid */
    transition: width 0.3s ease-in-out, background-color 0.2s ease, border 0.2s ease;
}

/* COLLAPSED STATE: Consolidated logic driven by the main container */
.main-container.collapsed-panel {
    /* The resizer column becomes 0px, and the resizer element itself is hidden */
    grid-template-columns: var(--left-panel-width) var(--resizer-width) 1fr 0px var(--right-panel-collapsed-width);
}
.main-container.collapsed-panel #right-panel-resizer {
    display: none;
}
.main-container.collapsed-panel .right-panel {
    border: none;
    border-left: 1px solid var(--border-color);
    background-color: var(--bg-color-darkest);
}
.main-container.collapsed-panel .right-panel .panel-content,
.main-container.collapsed-panel .right-panel #panel-placeholder,
.main-container.collapsed-panel .right-panel #panel-title,
.main-container.collapsed-panel .right-panel #panel-close-button {
    display: none;
}
.main-container.collapsed-panel .right-panel .panel-header {
    justify-content: center;
    height: 100%;
    padding: 0;
    background-color: transparent;
    border-bottom: none;
}
.main-container.collapsed-panel .right-panel .panel-header-controls {
    display: flex;
    align-items: center;
    height: 100%;
}


.panel-header {
    padding: 0.5rem 0.8rem; /* Compact header */
    font-weight: 500;
    font-size: 0.9rem; /* Smaller font */
    background-color: var(--bg-color-medium);
    border-bottom: 1px solid var(--border-color);
    user-select: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}
.panel-header-controls {
    display: flex;
    align-items: center;
}
.panel-control-button {
    background: none;
    border: none;
    color: var(--text-color-secondary);
    cursor: pointer;
    font-size: 1.2rem;
    line-height: 1;
    padding: 0.2rem;
    border-radius: 3px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.panel-control-button:hover {
    background-color: var(--bg-color-light);
    color: var(--text-color-primary);
}


#panel-content {
    padding: 0; /* Let cards manage their own padding */
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    overflow-y: auto;
}
.card {
    background: none;
    border: none;
    border-bottom: 1px solid var(--border-color);
    border-radius: 0;
    padding: 0;
}
.card:last-child {
    border-bottom: none;
}
.card h2 {
    font-size: 0.9rem; /* Smaller card headers */
    padding: 0.6rem 1rem; /* Compact card headers */
    background-color: var(--bg-color-medium);
    margin: 0;
}
.table-wrapper {
    overflow-x: auto;
    width: 100%;
}
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
}
th, td {
    padding: 0.5rem 0.8rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}
th {
    background-color: var(--bg-color-dark);
    font-weight: 500;
    color: var(--text-color-primary);
}
tbody tr:hover {
    background-color: var(--bg-color-light);
}


/* --- VIEWPORT & CANVAS --- */
.viewport-container {
    position: relative;
    overflow: hidden;
    padding: 0;
    background-color: var(--bg-color-darkest);
    /* NEW: Grid layout for split view */
    display: grid;
    grid-template-rows: 1fr; /* Default: only plan view */
    grid-template-columns: 1fr; /* Only one column */
}

/* NEW: Styles for the split view */
.viewport-container.split-view-active {
    grid-template-rows: var(--enkesit-viewport-height) var(--resizer-width) 1fr;
}

#enkesit-viewport-container {
    display: none; /* Hidden by default */
    background-color: var(--bg-color-dark);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    overflow: hidden;
    position: relative; /* for children */
}
#plan-viewport-container {
    position: relative; /* for children like follow-me button */
    overflow: hidden;
    display: flex; /* to make canvas-wrapper fill space */
    flex-direction: column;
    background-color: var(--bg-color-darkest);
    border: none;
    border-radius: 0;
}

.panel-resizer-horizontal {
    display: none; /* Hidden by default */
    background-color: var(--bg-color-darkest);
    cursor: row-resize;
    transition: background-color 0.2s ease;
    height: var(--resizer-width);
}
.panel-resizer-horizontal:hover {
    background-color: var(--accent-color-primary);
}

/* Show elements when split view is active */
.viewport-container.split-view-active #enkesit-viewport-container,
.viewport-container.split-view-active .panel-resizer-horizontal {
    display: block;
}

#enkesit-izleyici-controls {
    max-width: 500px;
    margin: auto; /* Center it */
    padding: 2rem !important; /* Give it more space */
}

.canvas-wrapper {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

#visualizer-canvas {
    display: block;
    cursor: crosshair;
    background-color: var(--bg-color-darkest);
}

/* --- UI CONTROLS (BUTTONS, INPUTS, ETC.) --- */
button {
    cursor: pointer;
    background-color: var(--accent-color-primary);
    color: #fff;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.9rem;
    transition: background-color 0.2s;
}
button:hover {
    background-color: var(--accent-color-hover);
}
button:disabled {
    background-color: var(--accent-color-secondary);
    cursor: not-allowed;
    opacity: 0.6;
}
button.secondary {
    background-color: var(--accent-color-secondary);
}
button.secondary:hover:not(:disabled) {
    background-color: var(--accent-color-secondary-hover);
}
/* Style for active toggle buttons */
button.secondary.active {
    background-color: var(--accent-color-primary);
    color: #fff;
}

button.danger {
    background-color: var(--error-color);
}
button.danger:hover:not(:disabled) {
    background-color: #d63030;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}
.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-color-secondary);
}
input[type="text"], input[type="email"], input[type="password"], input[type="number"], select, textarea {
    background-color: var(--bg-color-darkest);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.5rem;
    color: var(--text-color-primary);
    font-size: 0.9rem;
    width: 100%;
}
input[type="text"]:focus, input[type="email"]:focus, input[type="password"]:focus, input[type="number"]:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent-color-primary);
    box-shadow: 0 0 0 2px rgba(0, 122, 204, 0.3);
}
input:read-only, input:disabled, textarea:read-only, textarea:disabled {
    background-color: var(--bg-color-medium);
    cursor: not-allowed;
    opacity: 0.7;
}

.radio-group-horizontal {
    display: flex;
    gap: 1rem;
    align-items: center;
    font-size: 0.85rem;
}
.radio-group-horizontal label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-color-primary);
}
.form-hint {
    font-size: 0.75rem;
    color: var(--text-color-secondary);
    font-style: italic;
    margin-top: 0.2rem;
}


/* --- AUTH MODAL (NEW DESIGN) --- */
@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7); /* Slightly darker overlay */
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 10vh;
    z-index: 1000;
    overflow-y: auto;
}
#auth-modal.modal-overlay {
    animation: fadeInScale 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.modal-content {
    background-color: var(--bg-color-dark);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    width: 90%;
    max-width: 300px; /* Adjusted max-width, decreased by 25% */
    position: relative;
    overflow: hidden; /* Hide overflowing children */
}
.auth-modal-content {
    padding: 0; /* Let children handle padding */
    display: flex;
    flex-direction: column;
}
.auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}
.auth-tab {
    flex: 1;
    padding: 0.9rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent; /* Prepare for active border */
    color: var(--text-color-secondary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease;
    margin-bottom: -1px; /* Overlap border */
}
.auth-tab:hover {
    color: var(--text-color-primary);
}
.auth-tab.active {
    color: var(--text-color-primary);
    border-bottom-color: var(--accent-color-primary);
}
.auth-tab.active::after {
    content: none; /* Remove pseudo-element underline */
}
#auth-form-container, #signup-success-view {
    padding: 2rem;
}
#auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.google-login-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.7rem 1rem;
    background-color: var(--bg-color-medium); /* Darker button */
    color: var(--text-color-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-weight: 500;
    font-size: 0.9rem;
}
.google-login-button:hover {
    background-color: var(--bg-color-light); /* Lighter on hover */
}
.google-login-button svg {
    width: 20px;
    height: 20px;
}
.auth-separator {
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--text-color-secondary);
    font-size: 0.8rem;
    margin: 0.5rem 0; /* More vertical space */
}
.auth-separator::before, .auth-separator::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}
.auth-separator span {
    padding: 0 1rem;
    text-transform: lowercase;
}
.input-group {
    position: relative;
}
/* Override general input styles within the auth form */
#auth-form .input-group input {
    width: 100%;
    background-color: var(--bg-color-darkest);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.8rem;
    color: var(--text-color-primary);
    font-size: 0.95rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
#auth-form .input-group input::placeholder {
    color: var(--text-color-secondary);
    opacity: 1; /* For Firefox */
}
/* New focus style */
#auth-form .input-group input:focus {
    outline: none;
    border-color: var(--accent-color-primary);
    box-shadow: 0 0 0 2px rgba(0, 122, 204, 0.3);
}

.form-footer {
    display: flex;
    justify-content: flex-end;
    margin-top: -0.5rem; /* Pull up slightly */
}
.form-footer a {
    color: var(--accent-color-hover);
    text-decoration: none;
    font-size: 0.85rem;
}
.form-footer a:hover {
    text-decoration: underline;
}
#auth-action-button {
    padding: 0.8rem;
    font-size: 1rem;
    font-weight: 500;
    margin-top: 1.5rem; /* More space above */
}
.form-actions {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1rem;
}
.close-button {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--text-color-secondary);
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 24px;
    height: 24px;
    z-index: 10;
}
.close-button:hover {
    color: var(--text-color-primary);
}
#signup-success-view p {
    text-align: center;
    color: var(--text-color-primary);
    line-height: 1.6;
}
#signup-success-view strong {
    color: var(--accent-color-hover);
}

/* --- USER MENU --- */
body.app-authenticated #auth-button {
    display: none;
}
body:not(.app-authenticated) #user-menu {
    display: none !important; /* Use !important to override inline style */
}

.user-menu {
    position: relative;
}
.user-menu-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--bg-color-medium);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    min-width: 200px;
    z-index: 1001;
    box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    overflow: hidden;
}
.user-menu-dropdown.visible {
    display: block;
}
.user-menu-header {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: var(--text-color-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.user-menu-item {
    display: block;
    width: 100%;
    padding: 0.6rem 1rem;
    background: none;
    border: none;
    color: var(--text-color-primary);
    text-align: left;
    font-size: 0.9rem;
}
.user-menu-item:hover {
    background-color: var(--accent-color-primary);
    color: #fff;
}


/* --- PROJECT MODAL & CRS SELECTOR --- */
.project-modal-content {
    max-width: 500px;
    max-height: 80vh;
    padding: 1.25rem 1.5rem; /* Reduced padding for a more compact feel */
    gap: 1rem; /* Reduced gap between title and form */
}

/* Reduce space above the action buttons specifically in the project modal */
.project-modal-content .form-actions {
    margin-top: 0.5rem;
}

#define-crs-button {
    padding: 0.5rem 0.8rem; /* Make it a bit smaller */
}

/* --- PROJECT SELECTOR MODAL --- */
.project-selector-content {
    max-width: 800px;
    width: 95%;
    padding: 0;
    gap: 0;
    display: flex;
    flex-direction: column;
    max-height: 85vh;
}

.project-selector-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}
.project-selector-header h2 {
    margin: 0;
}

.project-selector-toolbar {
    padding: 0.75rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-color-darkest);
    flex-shrink: 0;
}
#project-search-input {
    width: 100%;
}

.project-selector-grid {
    flex-grow: 1;
    overflow-y: auto;
    padding: 1.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    background-color: var(--bg-color-darkest);
}

.project-card {
    background-color: var(--bg-color-dark);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-height: 100px;
    justify-content: space-between;
}
.project-card:hover {
    border-color: var(--accent-color-primary);
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}
.project-card-name {
    font-weight: 500;
    color: var(--text-color-primary);
    word-break: break-word; /* To wrap long project names */
}
.project-card-icon {
    width: 24px;
    height: 24px;
    color: var(--accent-color-primary);
    align-self: flex-end;
}

#project-selector-empty-state {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
    color: var(--text-color-secondary);
    background-color: var(--bg-color-darkest);
}
.empty-state-icon {
    width: 48px;
    height: 48px;
    opacity: 0.5;
    margin-bottom: 1rem;
}

.project-selector-footer {
    padding: 0.75rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-color-dark);
    display: flex;
    justify-content: flex-end;
    flex-shrink: 0;
}
#project-selector-new-project-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
#project-selector-new-project-button svg {
    width: 20px;
    height: 20px;
}

/* NEW: CRS Popover Styles */
.crs-popover {
    display: none; /* Hidden by default */
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--bg-color-medium);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    z-index: 1010; /* Above other modal content */
    margin-top: 4px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.4);
    flex-direction: column;
}
.crs-popover.visible {
    display: flex;
}
.crs-popover-search {
    padding: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}
.crs-popover-search input {
    width: 100%;
}
.crs-popover-list {
    max-height: 250px; /* Control height */
    overflow-y: auto;
    padding: 0.3rem;
}

.crs-list-group-header {
    font-size: 0.75rem;
    font-weight: bold;
    text-transform: uppercase;
    color: var(--text-color-secondary);
    padding: 0.8rem 0.8rem 0.3rem;
    user-select: none;
}

#crs-system-list {
    border: none;
    padding: 0;
    background: none;
}
.crs-system-item {
    padding: 0.6rem 0.8rem;
    cursor: pointer;
    border-radius: 3px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.crs-system-item:hover {
    background-color: var(--accent-color-primary);
}
.crs-item-name {
    font-weight: 500;
    font-size: 0.85rem;
}
.crs-item-epsg {
    font-size: 0.75rem;
    color: var(--text-color-secondary);
}
.crs-no-results {
    text-align: center;
    padding: 2rem;
    color: var(--text-color-secondary);
}

/* Custom CRS Modal specific styles */
.crs-top-sections {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.crs-list-fieldset {
    border: 1px solid var(--border-color);
    padding: 0.8rem;
    border-radius: 4px;
    margin: 0;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-color-darkest);
}

.crs-list-fieldset legend {
    padding: 0 0.5rem;
    margin-left: -0.5rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-color-secondary);
}

.crs-selectable-list {
    border: 1px solid var(--bg-color-medium);
    border-radius: 3px;
    padding: 0.3rem;
    height: 150px;
    overflow-y: auto;
    background-color: var(--bg-color-dark);
}

/* Custom scrollbar for webkit browsers */
.crs-selectable-list::-webkit-scrollbar {
  width: 8px;
}
.crs-selectable-list::-webkit-scrollbar-track {
  background: var(--bg-color-dark);
}
.crs-selectable-list::-webkit-scrollbar-thumb {
  background-color: var(--bg-color-light);
  border-radius: 4px;
}
.crs-selectable-list::-webkit-scrollbar-thumb:hover {
  background-color: var(--accent-color-secondary);
}


.crs-list-item {
    padding: 0.5rem 0.8rem;
    border-radius: 3px;
    cursor: pointer;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    user-select: none;
    border: 1px solid transparent;
}

.crs-list-item:hover {
    background-color: var(--bg-color-light);
}

.crs-list-item.active {
    background-color: var(--accent-color-primary) !important;
    border-color: var(--accent-color-hover);
    color: #fff;
}
.crs-list-item input[type="radio"] {
    margin: 0;
    pointer-events: none; /* Let parent div handle click */
}

.crs-tabs {
    display: flex;
    border-bottom: 2px solid var(--border-color);
    margin-top: 0.5rem;
}
.crs-tab-button {
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    padding: 0.6rem 1rem;
    margin-bottom: -2px; /* Overlap border */
    color: var(--text-color-secondary);
    border-radius: 0;
    font-size: 0.9rem;
}
.crs-tab-button:hover {
    background-color: var(--bg-color-light);
    color: var(--text-color-primary);
}
.crs-tab-button.active {
    color: var(--accent-color-hover);
    border-bottom-color: var(--accent-color-hover);
    background: none;
}
.crs-tab-button:disabled {
    color: var(--text-color-secondary);
    opacity: 0.4;
    cursor: not-allowed;
    background: none;
}
.crs-tab-content {
    display: none;
    padding-top: 1rem;
}
.crs-tab-content.active {
    display: block;
}


#custom-crs-form .form-group label {
    font-size: 0.8rem;
}

.crs-params-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem 1.5rem; /* row-gap column-gap */
}

.dms-input-group {
    display: flex;
    gap: 0.5rem;
}
.dms-input-group input {
    text-align: right;
}

.crs-param-full-width {
    grid-column: 1 / -1; /* Span across all columns */
}


/* --- DROPDOWN MENUS (IMPORT & PROJECT) --- */
#project-menu-button {
    background-color: var(--accent-color-primary);
    color: white;
    font-weight: 500;
    padding: 0.6rem;
    justify-content: space-between;
    text-align: left;
    width: 100%;
}
#project-menu-button .project-name {
    flex-grow: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
#project-menu-button:hover {
    background-color: var(--accent-color-hover);
}

.import-dropdown-container {
    position: relative;
    width: 100%;
}
.import-dropdown-container button {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}
.import-dropdown-container button svg {
    width: 16px;
    height: 16px;
    transition: transform 0.2s;
    flex-shrink: 0;
}
.import-dropdown-container button.open svg {
    transform: rotate(180deg);
}

.import-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--bg-color-medium);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    z-index: 50;
    margin-top: 4px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
    overflow: hidden;
}
.import-dropdown-menu.visible {
    display: block;
}
.dropdown-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 0.6rem 1rem;
    background: none;
    border: none;
    color: var(--text-color-primary);
    text-align: left;
    font-size: 0.9rem;
    font-family: inherit;
    cursor: pointer;
    text-decoration: none;
}
.dropdown-item:not(.submenu-container) {
    justify-content: flex-start;
}
.dropdown-item:hover:not(.disabled):not(:disabled) {
    background-color: var(--accent-color-primary);
    color: #fff;
}
.dropdown-item.disabled, .dropdown-item:disabled {
    color: var(--text-color-secondary);
    cursor: not-allowed;
    background-color: transparent !important;
}

hr.prospector-separator {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 0.5rem 0; /* Vertical spacing */
}

/* Submenu for Recent Projects */
.submenu-container {
    position: relative;
}
.submenu-arrow {
    width: 16px;
    height: 16px;
}
.submenu-panel {
    display: none;
    position: absolute;
    left: 100%;
    top: 0;
    background-color: var(--bg-color-medium);
    border: 1px solid var(--border-color);
    min-width: 200px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
    border-radius: 4px;
}
.submenu-container:hover .submenu-panel {
    display: block;
}
.submenu-panel-header {
    padding: 0.5rem 0.8rem;
    font-size: 0.75rem;
    color: var(--text-color-secondary);
    border-bottom: 1px solid var(--border-color);
}
.submenu-item {
    display: block;
    padding: 0.6rem 1rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-decoration: none;
    color: var(--text-color-primary);
}
.submenu-item:hover {
    background-color: var(--accent-color-primary);
    color: #fff;
}


/* --- TOAST NOTIFICATIONS --- */
.toast-message {
    position: fixed;
    top: 20px; /* Positioned at the top */
    left: 50%;
    transform: translate(-50%, -150%); /* Start above the screen */
    padding: 1rem 1.5rem;
    border-radius: 6px;
    color: #fff;
    font-size: 0.9rem;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.toast-message.show {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0); /* Slide into view */
}
.toast-message.success {
    background-color: var(--success-color);
}
.toast-message.error {
    background-color: var(--error-color);
}


/* --- CONTEXT MENU --- */
#context-menu, #enkesit-context-menu {
    display: none;
    position: fixed;
    z-index: 1000;
    background-color: var(--bg-color-medium);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    min-width: 180px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    padding: 4px 0;
}
.context-menu-item {
    padding: 0.6rem 1rem;
    cursor: pointer;
    font-size: 0.85rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.context-menu-item:hover:not(.disabled) {
    background-color: var(--accent-color-primary);
    color: #fff;
}
.context-menu-item.disabled {
    color: var(--text-color-secondary);
    cursor: not-allowed;
    background-color: transparent !important;
}
.context-menu-separator {
    height: 1px;
    background-color: var(--border-color);
    margin: 4px 0;
}
/* Submenu styling for Context Menu */
#context-menu .submenu-container:hover .submenu-panel {
    top: -5px; /* Adjust vertical alignment */
    left: 98%; /* Overlap slightly */
}
#context-menu .submenu-item {
    font-size: 0.85rem;
}


/* --- TOOL PALETTE (IN TOOLBOX) --- */
.tool-palette {
    display: flex;
    flex-direction: column;
    height: 100%;
}
.tool-palette-tabs {
    display: flex;
    flex-wrap: wrap; /* Allow tabs to wrap on smaller screens */
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-color-darkest);
    flex-shrink: 0;
}
.tool-palette-tab {
    padding: 0.5rem 0.8rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-color-secondary);
    font-size: 0.8rem;
    border-radius: 0;
}
.tool-palette-tab:hover {
    background-color: var(--bg-color-light);
}
.tool-palette-tab.active,
.tool-palette-tab[data-tab="enkesit-izleyici"].active {
    color: var(--text-color-primary);
    border-bottom-color: var(--accent-color-primary);
    background-color: var(--bg-color-dark);
}
.tool-palette-content-wrapper {
    flex-grow: 1;
    overflow: hidden; /* Prevent this wrapper from ever showing a scrollbar */
}
.tool-palette-content {
    display: none;
    padding: 0.5rem;
    height: 100%; /* Make content fill the wrapper */
    overflow-y: auto; /* Allow individual tools to scroll if needed */
}
.tool-palette-content.active {
    display: block;
}
#tool-palette-enkesit-izleyici {
    display: none !important; /* This tool's content is now in the viewport */
}
#corridor-stations-textarea {
    font-family: 'Roboto Mono', monospace;
    font-size: 0.8rem;
}

/* --- NEW: COLOR PICKER COMPONENT --- */
.color-picker-component {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color-darkest);
    width: 100%;
}
.color-picker-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}
.color-picker-tab {
    flex-grow: 1;
    text-align: center;
    padding: 0.5rem;
    background: none;
    border: none;
    color: var(--text-color-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    margin-bottom: -1px;
}
.color-picker-tab:hover {
    background-color: var(--bg-color-light);
}
.color-picker-tab.active {
    background-color: var(--bg-color-dark);
    color: var(--text-color-primary);
    border-bottom-color: var(--accent-color-primary);
}
.color-picker-content {
    display: none;
    padding: 0.5rem;
}
.color-picker-content.active {
    display: block;
}
.color-palette-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(16px, 1fr));
    gap: 4px;
}
.color-swatch {
    width: 16px;
    height: 16px;
    border-radius: 3px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: transform 0.1s ease, border-color 0.2s ease;
}
.color-swatch:hover {
    transform: scale(1.1);
}
.color-swatch.selected {
    border-color: var(--accent-color-hover);
    box-shadow: 0 0 0 1px var(--accent-color-hover);
}
input[type="color"] {
    width: 100%;
    height: 38px;
    padding: 0.2rem;
    background: none;
    border: none;
}


/* --- LOCATION PANEL --- */
#mobile-location-bar {
    position: absolute;
    top: 10px;
    left: 10px;
    right: 10px;
    display: none; /* Hidden by default (for desktop) */
    align-items: flex-start;
    gap: 10px;
    z-index: 10;
    pointer-events: none; /* Let clicks pass through the bar itself */
}

#location-panel {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background-color: rgba(30, 30, 30, 0.85);
    backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 3px;
    pointer-events: all;
    font-family: 'Roboto Mono', monospace;
    width: 400px;
    min-width: 0; /* Allow panel to shrink below its content's intrinsic minimum size */
    flex-shrink: 0;
}
#location-panel.locked {
    border-color: var(--accent-color-hover);
    box-shadow: 0 0 8px rgba(0, 149, 255, 0.5);
}


.location-card, .location-status-card {
    background-color: rgba(0, 0, 0, 0.4);
    border: 1px solid #4ec9b0;
    border-radius: 4px;
    padding: 8px 12px;
}

#location-coords-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.location-value {
    color: var(--text-color-primary);
    font-size: 1rem;
    font-weight: 500;
    /* Allow long coordinate strings from overflowing their container */
    overflow-wrap: break-word;
}
.location-value-combined {
    font-size: 2.3125rem;
    font-weight: 700;
    color: #fff;
    text-align: center;
    line-height: 1.1;
}
.location-value-small {
    font-size: 0.864rem;
}
.coord-columns-wrapper {
    display: flex;
    gap: 0.5rem;
}
.coord-column {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.location-status-card {
    padding: 6px 10px;
    font-size: 0.8rem;
    text-align: center;
    color: var(--text-color-secondary);
    display: none; /* Hidden by default */
}
.location-status-card.warning {
    color: #f39c12; /* Orange for warnings */
}
.location-status-card.success {
    color: var(--success-color);
    font-weight: 500;
}


#location-accuracy-display {
    font-size: 1.25rem;
    white-space: nowrap;
    flex-shrink: 0;
}
.crs-accuracy {
    font-weight: 500;
    padding: 2px 6px;
    border-radius: 3px;
}
.crs-accuracy.good { color: #4ec9b0; }
.crs-accuracy.medium { color: #f39c12; }
.crs-accuracy.poor { color: #f44747; }


#mobile-zoom-controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: all;
}
#mobile-zoom-controls button {
    width: 44px;
    height: 44px;
    font-size: 1.5rem;
    line-height: 1;
    font-weight: 300;
    background-color: var(--bg-color-medium);
    border: 1px solid var(--border-color);
    color: var(--text-color-primary);
    border-radius: 6px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
#mobile-zoom-controls button:hover {
    background-color: var(--bg-color-light);
}
#mobile-zoom-controls button svg {
    width: 24px;
    height: 24px;
}


#follow-me-button {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    padding: 0;
    background-color: var(--bg-color-medium);
    color: var(--text-color-secondary);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 6px rgba(0,0,0,0.3);
    z-index: 10;
}
#follow-me-button.active {
    background-color: var(--accent-color-primary);
    color: #fff;
}
#follow-me-button svg {
    width: 24px;
    height: 24px;
}


/* --- PANEL PLACEHOLDER (RIGHT PANEL) --- */
#panel-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex-grow: 1; /* This is the key fix */
    padding: 2rem;
    text-align: center;
    color: var(--text-color-secondary);
}
.placeholder-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}
#panel-placeholder h3 {
    color: var(--text-color-primary);
    margin-bottom: 0.5rem;
}


/* --- LOADING OVERLAY --- */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color-darkest);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.3s ease-in-out;
}
.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}
.spinner {
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--accent-color-primary);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* --- AI CHAT INTERFACE --- */
#ai-chat-content {
    padding: 0;
    gap: 0;
    overflow: hidden;
}

#chat-messages-container {
    flex-grow: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.chat-message {
    padding: 0.75rem 1rem;
    border-radius: 12px;
    max-width: 80%;
    word-wrap: break-word;
    line-height: 1.4;
    font-size: 0.9rem;
}

.chat-message.user {
    background-color: var(--accent-color-primary);
    color: #fff;
    align-self: flex-end;
    border-bottom-right-radius: 2px;
}

.chat-message.model {
    background-color: var(--bg-color-medium);
    align-self: flex-start;
    border-bottom-left-radius: 2px;
}
.chat-message.model pre {
    background-color: var(--bg-color-darkest);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.8rem;
    margin: 0.5rem 0;
    font-family: 'Roboto Mono', monospace;
    font-size: 0.8rem;
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-x: auto;
}

.chat-thinking-indicator {
    align-self: flex-start;
    display: flex;
    align-items: center;
    gap: 5px;
}
.chat-thinking-indicator .dot {
    width: 8px;
    height: 8px;
    background-color: var(--text-color-secondary);
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out both;
}
.chat-thinking-indicator .dot:nth-child(1) { animation-delay: 0s; }
.chat-thinking-indicator .dot:nth-child(2) { animation-delay: 0.2s; }
.chat-thinking-indicator .dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1.0); }
}

#chat-input-form {
    display: flex;
    padding: 0.5rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-color-darkest);
    flex-shrink: 0;
    gap: 0.5rem;
}

#chat-textarea {
    flex-grow: 1;
    resize: none;
    max-height: 150px;
    scrollbar-width: thin;
}

#chat-send-button {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
#chat-send-button svg {
    width: 20px;
    height: 20px;
}

/* --- NEW: Properties Panel Accordion --- */
.properties-group {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color-dark);
}
.properties-group summary {
    cursor: pointer;
    padding: 0.6rem 1rem;
    font-weight: 500;
    font-size: 0.9rem;
    background-color: var(--bg-color-medium);
    list-style: none; /* Remove default triangle */
    user-select: none;
}
.properties-group summary::-webkit-details-marker {
    display: none; /* Remove default triangle for Webkit */
}
.properties-group summary::before {
    content: '▶';
    margin-right: 0.5rem;
    font-size: 0.7em;
    display: inline-block;
    transition: transform 0.2s;
}
.properties-group[open] > summary::before {
    transform: rotate(90deg);
}
.properties-group-content {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* --- NEW: Report Generator Styles --- */
#report-generator-output {
    flex-grow: 1;
    overflow-y: auto;
    background-color: var(--bg-color-darkest);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.8rem;
    min-height: 150px;
    font-family: 'Roboto', sans-serif;
    font-size: 0.9rem;
    line-height: 1.5;
    white-space: pre-wrap;
    word-wrap: break-word;
}
#report-generator-output .spinner {
    margin: 2rem auto;
    width: 30px;
    height: 30px;
}
#report-generator-output .placeholder-text {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-color-secondary);
    font-style: italic;
}
#report-generator-output pre {
    background-color: var(--bg-color-dark);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.8rem;
    margin: 0.5rem 0;
    font-family: 'Roboto Mono', monospace;
    font-size: 0.8rem;
    overflow-x: auto;
}
#report-generator-output table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}
#report-generator-output th,
#report-generator-output td {
    border: 1px solid var(--border-color);
    padding: 0.5rem;
    text-align: left;
}
#report-generator-output th {
    background-color: var(--bg-color-medium);
}
#report-generator-output ul,
#report-generator-output ol {
    padding-left: 1.5rem;
    margin: 0.5rem 0;
}
#report-generator-output p {
    margin-bottom: 0.5rem;
}


/* --- NEW: LandXML Import Modal Tree --- */
.landxml-import-tree, .landxml-import-tree ul {
    list-style: none;
    padding-left: 0;
    user-select: none;
}
.landxml-import-tree {
    font-size: 0.9rem;
}
.landxml-import-tree li {
    padding: 0.3rem 0.5rem;
    border-radius: 3px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.landxml-import-tree .landxml-tree-item-name {
    flex-grow: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.landxml-import-tree .landxml-tree-item-count {
    color: var(--text-color-secondary);
    font-size: 0.8rem;
    flex-shrink: 0;
}
.landxml-import-tree input[type="checkbox"] {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}
.landxml-import-tree .tree-toggle {
    cursor: pointer;
    width: 16px;
    height: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.landxml-import-tree ul {
    margin-left: 1rem;
    padding-left: 1rem;
    border-left: 1px solid var(--border-color);
}


/* --- NEW: Enkesit İzleyici Stilleri --- */
.generate-button-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.generate-button-container button {
    flex-grow: 1;
}

.stale-indicator {
    color: #f39c12; /* amber */
    animation: pulse-glow 2s infinite ease-in-out;
    flex-shrink: 0;
}
.stale-indicator svg {
    width: 20px;
    height: 20px;
    display: block;
}

@keyframes pulse-glow {
    0% { opacity: 0.7; }
    50% { opacity: 1; }
    100% { opacity: 0.7; }
}

#enkesit-surface-list {
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none;  /* IE and Edge */
}
#enkesit-surface-list::-webkit-scrollbar {
    display: none; /* WebKit */
}
#enkesit-surface-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.2rem;
    font-size: 0.85rem;
}
#enkesit-surface-list label {
    flex-grow: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
#enkesit-surface-list .color-swatch {
    width: 14px;
    height: 14px;
    border: 1px solid var(--border-color);
    flex-shrink: 0;
}
#enkesit-canvas {
    background-color: var(--bg-color-darkest);
    display: block;
    width: 100%;
    height: 100%;
}

.enkesit-viewer-content-area {
    display: flex;
    flex-grow: 1;
    gap: 0.5rem;
    min-height: 0;
}

#enkesit-list-container {
    flex: 0 0 120px;
    overflow-y: auto;
    background-color: var(--bg-color-darkest);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.3rem;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none;  /* Internet Explorer 10+ */
}
#enkesit-list-container::-webkit-scrollbar {
    display: none; /* WebKit */
}

.enkesit-list-item {
    padding: 0.4rem 0.6rem;
    font-size: 0.8rem;
    cursor: pointer;
    border-radius: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-family: 'Roboto Mono', monospace;
}

.enkesit-list-item:hover {
    background-color: var(--bg-color-light);
}

.enkesit-list-item.active {
    background-color: var(--accent-color-primary);
    color: #fff;
    font-weight: 500;
}

.enkesit-canvas-area {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    min-height: 0;
}


/* --- NEW: Point Style Editor --- */
.point-style-editor-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-color-darkest);
}
.point-style-editor-tab {
    padding: 0.8rem 1.2rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-color-secondary);
    font-size: 0.9rem;
    border-radius: 0;
}
.point-style-editor-tab:hover {
    background-color: var(--bg-color-light);
}
.point-style-editor-tab.active {
    color: var(--text-color-primary);
    border-bottom-color: var(--accent-color-primary);
    background-color: var(--bg-color-dark);
}
.point-style-editor-tab-content {
    display: none;
    padding: 1.5rem;
}
.point-style-editor-tab-content.active {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}


/* --- MOBILE & RESPONSIVE DESIGN --- */
#mobile-nav, #mobile-backdrop, .panel-close-mobile {
    display: none;
}


@media (max-width: 768px) {
    body {
        /* On mobile, use flex to manage the layout with the fixed bottom nav */
        display: flex;
        flex-direction: column;
    }

    .app-header {
        flex-shrink: 0;
    }

    .main-container, .main-container.collapsed-panel {
        flex-grow: 1; /* Let it fill the space between header and nav */
        display: grid; /* Use a simple grid to ensure viewport fills the space */
        grid-template-columns: 1fr;
        position: relative;
        padding: 0;
        overflow: hidden; /* Prevent content from spilling */
    }

    /* On mobile, the split view is disabled; only the plan view is shown. */
    .viewport-container.split-view-active {
        grid-template-rows: 1fr;
    }
    .viewport-container.split-view-active #enkesit-viewport-container,
    .viewport-container.split-view-active .panel-resizer-horizontal {
        display: none;
    }


    .left-panel, .right-panel {
        position: fixed;
        top: 0;
        height: 100%;
        width: 300px;
        z-index: 1010;
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
        border-radius: 0;
        border: none;
        box-shadow: 0 0 15px rgba(0,0,0,0.5);
    }
    .right-panel {
        left: auto;
        right: 0;
        transform: translateX(100%);
    }
    .left-panel.visible, .right-panel.visible {
        transform: translateX(0);
    }

    .panel-close-mobile {
        display: block;
        position: absolute;
        top: 5px;
        right: 5px;
        font-size: 2rem;
        background: none;
        border: none;
        color: var(--text-color-secondary);
        z-index: 1011;
        width: 30px;
        height: 30px;
        line-height: 1;
        padding: 0;
    }
    
    .panel-resizer-vertical {
        display: none;
    }

    /* Main content area should be full size */
    .viewport-container, #plan-viewport-container {
        width: 100%;
        height: 100%;
        border: none;
        border-radius: 0;
    }

    .app-footer, .quick-commands-bar {
        display: none; /* Replaced by mobile nav */
    }

    #mobile-backdrop {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.5);
        z-index: 1005;
    }
    
    #mobile-nav {
        display: flex;
        justify-content: space-around;
        align-items: center;
        background-color: var(--bg-color-dark);
        border-top: 1px solid var(--border-color);
        height: 55px;
        width: 100%;
        z-index: 1015; /* Ensures nav is above backdrop and panels */
        flex-shrink: 0;
    }
    #mobile-nav button {
        background: none;
        border: none;
        color: var(--text-color-secondary);
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2px;
        padding: 4px;
        font-size: 0.6rem;
    }
    #mobile-nav button.active {
        color: var(--accent-color-hover);
    }
    #mobile-nav button svg {
        width: 24px;
        height: 24px;
    }

    /* Mobile-specific location panel styling */
    #mobile-location-bar {
        display: flex; /* Make it visible on mobile */
        justify-content: space-between;
    }

    #location-panel {
        width: auto; /* Let it shrink */
        padding: 2px 3px;
        flex-grow: 1;
    }

    #location-panel .location-card {
        padding: 4px 6px; /* Reduced padding */
    }
    
    #location-station-offset-card {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .location-value-combined {
        font-size: 2.3125rem;
    }

    .location-value-small {
        font-size: 0.864rem;
    }


    /* Adjust zoom buttons for smaller screens */
    #mobile-zoom-controls button {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    #mobile-zoom-controls button svg {
        width: 20px;
        height: 20px;
    }

    #follow-me-button {
        bottom: 70px; /* Position above mobile nav */
        right: 15px;
        width: 44px;
        height: 44px;
    }
    
}