:root {
    --bg-color: #f5f5f5;
    --container-bg: white;
    --text-color: #333;
    --header-bg: #f8f9fa;
    --header-border: #dee2e6;
    --section-bg: white;
    --section-border: #e9ecef;
    --section-hover: #f8f9fa;
    --current-section-bg: #e9ecef;
    --current-time-bg: #f8f9fa;
    --current-time-border: #dee2e6;
    --button-bg: #f8f9fa;
    --button-border: #dee2e6;
    --button-hover: #e2e6ea;
    --button-text: #212529;
    --timeline-connector: #dee2e6;
    --timeline-dot: #6c757d;
    --timeline-dot-border: #f8f9fa;
    
    /* Alert and status colors */
    --success-bg: rgba(40, 167, 69, 0.15);
    --success-color: #155724;
    --success-border: rgba(40, 167, 69, 0.3);
    
    --warning-bg: rgba(255, 193, 7, 0.15);
    --warning-color: #856404;
    --warning-border: rgba(255, 193, 7, 0.3);
    
    --danger-bg: rgba(220, 53, 69, 0.15);
    --danger-color: #721c24;
    --danger-border: rgba(220, 53, 69, 0.3);
    
    --info-bg: rgba(23, 162, 184, 0.15);
    --info-color: #0c5460;
    --info-border: rgba(23, 162, 184, 0.3);
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --container-bg: #2d2d2d;
    --text-color: #e0e0e0;
    --header-bg: #333333;
    --header-border: #444;
    --section-bg: #3a3a3a;
    --section-border: #444;
    --section-hover: #444;
    --current-section-bg: #4a4a4a;
    --current-time-bg: #333333;
    --current-time-border: #444;
    --button-bg: #444;
    --button-border: #555;
    --button-hover: #555;
    --button-text: #f8f9fa;
    --timeline-connector: #555;
    --timeline-dot: #888;
    --timeline-dot-border: #2d2d2d;
    
    /* Dark mode alert and status colors */
    --success-bg: rgba(72, 180, 97, 0.2);
    --success-color: #75b798;
    --success-border: rgba(72, 180, 97, 0.3);
    
    --warning-bg: rgba(255, 193, 7, 0.2);
    --warning-color: #ffd351;
    --warning-border: rgba(255, 193, 7, 0.3);
    
    --danger-bg: rgba(220, 53, 69, 0.2);
    --danger-color: #ea868f;
    --danger-border: rgba(220, 53, 69, 0.3);
    
    --info-bg: rgba(23, 162, 184, 0.2);
    --info-color: #6edff6;
    --info-border: rgba(23, 162, 184, 0.3);
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    height: 100vh;
    overflow: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    margin: 0 auto;
    background-color: var(--container-bg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--header-border);
    gap: 10px;
    flex-wrap: wrap;
}

.header-section {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

/* Title section - takes available space */
.header-section:first-child {
    flex: 1;
    min-width: 150px; /* Ensure title has minimum width */
    justify-content: flex-start;
}

/* Middle sections (Start Time) */
.header-section:nth-child(3) {
    flex: 2;
    min-width: 250px; /* Give more space to time controls */
    justify-content: center;
}

/* Theme toggle and time sections */
.header-section:nth-child(2),
.header-section:last-child {
    width: auto;
    justify-content: flex-end;
}

#title {
    margin: 0;
    font-size: 24px;
    font-weight: bold;
    text-align: left;
    color: var(--text-color);
}

.header-controls {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.start-time-container {
    display: flex;
    gap: 8px;
    align-items: center;
    justify-content: center;
    flex-wrap: nowrap;
    width: 100%;
    max-width: 100%;
    padding: 0 10px;
}

.current-time-container {
    text-align: right;
    min-width: 80px; /* Ensure time has enough space */
    padding: 0 5px;
}

#current-time {
    font-weight: bold;
    font-size: 16px;
    white-space: nowrap;
    color: var(--text-color);
}

.start-time-container {
    flex: 1;
    text-align: center;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.start-time-container label {
    font-size: 14px;
    color: #666;
    font-weight: bold;
    white-space: nowrap;
}

#start-time-input {
    font-size: 16px;
    padding: 8px 32px 8px 12px; /* Adjust padding to make room for icon */
    border: 2px solid var(--button-border);
    border-radius: 6px;
    text-align: left; /* Align text to left to prevent overlap */
    font-weight: bold;
    color: var(--text-color);
    background-color: var(--button-bg);
    transition: all 0.2s ease;
    width: 180px;
    max-width: 100%;
    box-sizing: border-box;
    /* Style the clock icon */
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236c757d' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cpolyline points='12 6 12 12 16 14'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-size: 16px;
    /* Hide default clock icon */
    -webkit-appearance: none;
    -moz-appearance: textfield;
}

/* Dark mode specific styles for the time input */
[data-theme="dark"] #start-time-input {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23adb5bd' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'%3E%3C/circle%3E%3Cpolyline points='12 6 12 12 16 14'%3E%3C/polyline%3E%3C/svg%3E");
}

#start-time-input:focus {
    outline: none;
    border-color: #2196F3;
    background-color: var(--section-bg);
}

/* Hide the default calendar picker indicator */
input[type="time"]::-webkit-calendar-picker-indicator {
    display: none;
}

/* Firefox */
input[type="time"]::-moz-calendar-picker-indicator {
    display: none;
}

/* Hide the clear button in Edge */
input[type="time"]::-ms-clear {
    display: none;
}

.current-time-container {
    flex: 1;
    text-align: right;
}

#current-time {
    font-size: 24px;
    font-weight: bold;
    color: inherit;
}

.timeline-container {
    flex: 1;
    overflow-y: auto;
    padding: 0 20px 20px 20px;
    margin-bottom: 0;
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    padding: 10px;
    background-color: #f8f9fa;
    border-radius: 4px;
    margin-bottom: 10px;
}

.section-name {
    font-weight: bold;
    color: #333;
    flex: 2;
    text-align: left;
    font-size: 27px;
}

.time-range {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.timeline-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 10px;
    margin-bottom: 5px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
    gap: 15px;
    border: 2px solid transparent;
}

.timeline-item:hover {
    background-color: var(--section-hover);
}

.timeline-item.current-section {
    background-color: var(--current-section-bg);
    border-left: 4px solid #0d6efd;
    padding-left: 8px;
    position: relative;
    z-index: 1;
}

/* Add a subtle shadow to make the current section stand out */
.timeline-item.current-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    box-shadow: 0 0 10px rgba(13, 110, 253, 0.3);
    border-radius: 4px;
    z-index: -1;
}

.duration-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    flex: 1;
}

.duration-input {
    width: 75px;
    padding: 6px 10px;
    border: 1px solid var(--button-border);
    border-radius: 3px;
    font-size: 27px;
    text-align: center;
    background-color: var(--button-bg);
    color: var(--text-color);
    transition: border-color 0.2s, background-color 0.2s;
}

.duration-input:focus {
    outline: none;
    border-color: #2196F3;
    background-color: var(--section-bg);
}

.duration-input:hover {
    border-color: #bbb;
}

.duration-label {
    font-size: 27px;
    color: #666;
    font-weight: normal;
}

.time-box {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px 20px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 30px;
    min-width: 180px;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    border: 1px solid transparent;
}

.time-box.green,
.alert-success,
.alert-time-ok {
    background-color: var(--success-bg);
    color: var(--success-color);
    border-color: var(--success-border);
}

.time-box.yellow,
.alert-warning,
.alert-time-warning {
    background-color: var(--warning-bg);
    color: var(--warning-color);
    border-color: var(--warning-border);
}

.time-box.red,
.alert-danger {
    background-color: var(--danger-bg);
    color: var(--danger-color);
    border-color: var(--danger-border);
}

.time-box.upcoming,
.alert-info {
    background-color: var(--info-bg);
    color: var(--info-color);
    border-color: var(--info-border);
}

.time-box.current {
    background-color: var(--warning-bg);
    color: var(--warning-color);
    border-color: var(--warning-border);
    box-shadow: 0 2px 6px rgba(255, 152, 0, 0.2);
}

.time-box.completed {
    background-color: var(--success-bg);
    color: var(--success-color);
    border-color: var(--success-border);
}

/* Alert styles */
.alert {
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid transparent;
    border-radius: 4px;
    font-size: 14px;
    line-height: 1.4;
    color: var(--text-color);
}

.time-display-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    width: 100%;
}

.current-section-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.section-info-display {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    flex: 1;
}

#current-section-name {
    font-size: clamp(28px, 3vw, 48px);
    color: var(--text-color);
    font-weight: bold;
}

#current-section-duration {
    font-size: clamp(18px, 2vw, 28px);
    color: var(--text-color);
    opacity: 0.8;
    margin-top: 2px;
    font-style: italic;
}

#current-section-name.presentation-complete {
    color: #f44336 !important; /* Red for presentation complete */
}

#current-section-name.time-until-start {
    color: #2196F3 !important; /* Blue for time until start */
}

#time-remaining, #time-remaining.portrait-mode {
    font-size: clamp(96px, 15vw, 360px) !important; /* Restore !important for portrait mode */
    font-weight: bold !important;
    text-align: center;
    padding: 8px 15px;
    border-radius: 6px;
    min-width: min(200px, 20vw);
    background-color: var(--container-bg);
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    flex-shrink: 0;
    line-height: 1;
    color: var(--text-color) !important;
}

#time-remaining.green {
    color: #4CAF50 !important;
    border: 3px solid #4CAF50;
}

#time-remaining.yellow {
    color: #FF9800 !important;
    border: 3px solid #FF9800;
}

#time-remaining.red {
    color: #F44336 !important;
    border: 3px solid #F44336;
}

#time-remaining.blue {
    color: #2196F3 !important;
    border: 3px solid #2196F3;
}

.time-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    margin: 0;
    width: fit-content;
}

h1 {
    color: var(--text-color) !important;
    font-size: 1.5em;
    margin: 0;
}

.time-adjustment-buttons {
    display: flex;
    gap: 12px;
    flex: 1;
    justify-content: flex-end;
}

.time-adjustment-buttons button {
    padding: 12px 18px;
    font-size: 20px;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    background: linear-gradient(145deg, #6c757d, #5a6268);
    color: white;
    min-width: 50px;
    box-shadow: 
        0 4px 8px rgba(0, 0, 0, 0.1),
        0 2px 4px rgba(0, 0, 0, 0.06);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.time-adjustment-buttons button:hover {
    background: linear-gradient(145deg, #5a6268, #495057);
    box-shadow: 
        0 6px 12px rgba(0, 0, 0, 0.15),
        0 3px 6px rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
}

.time-adjustment-buttons button:active {
    transform: translateY(0px) scale(0.98);
    box-shadow: 
        0 2px 4px rgba(0, 0, 0, 0.1),
        0 1px 2px rgba(0, 0, 0, 0.06);
}

.time-adjustment-buttons button:focus {
    outline: none;
    box-shadow: 
        0 4px 8px rgba(0, 0, 0, 0.1),
        0 2px 4px rgba(0, 0, 0, 0.06),
        0 0 0 3px rgba(108, 117, 125, 0.3);
}

.presentation-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 3px 8px;
    margin-bottom: 2px;
    border-radius: 4px;
}

.section-name {
    flex: 1;
    padding-right: 20px;
    font-weight: bold;
}

.current-info-container {
    margin-bottom: 20px;
    padding: 20px;
    background-color: var(--section-bg);
    border-radius: 8px;
    border: 2px solid var(--section-border);
    margin: 0 20px 20px 20px;
    position: sticky;
    top: 80px;
    z-index: 99;
    color: var(--text-color);
}

.time-info {
    font-size: 24px;
    font-weight: bold;
    color: var(--text-color);
}

.time-adjustment-buttons {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.time-adjustment-buttons button {
    padding: 10px 20px;
    font-size: 18px;
    font-weight: bold;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    background-color: #6c757d;
    color: white;
    min-width: 50px;
    transition: background-color 0.2s ease;
}

.time-adjustment-buttons button:hover {
    background-color: #5a6268;
}

.time-adjustment-buttons button:active {
    transform: translateY(1px);
    background-color: #495057;
}

.section-info {
    display: flex;
    flex-direction: column;
    gap: 5px;
    flex: 1;
}

.section-name {
    font-weight: bold;
    color: var(--text-color);
}

#import-button, input[type="file"] + label {
    padding: 8px 16px;
    font-size: 16px;
    font-weight: 600;
    border: 2px solid var(--button-border);
    border-radius: 4px;
    background-color: var(--button-bg);
    color: var(--button-text);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    box-sizing: border-box;
}

#import-button:hover {
    background-color: var(--button-hover);
    border-color: var(--button-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#import-button:active {
    background-color: #dee2e6;
    transform: translateY(0);
    box-shadow: none;
}

#now-button {
    padding: 8px 16px;
    font-size: 16px;
    font-weight: 600;
    border: 2px solid var(--button-border);
    border-radius: 4px;
    background-color: var(--button-bg);
    color: var(--button-text);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    box-sizing: border-box;
}

#now-button:hover {
    background-color: var(--button-hover);
    border-color: var(--button-hover);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#now-button:active {
    background-color: #dee2e6;
    transform: translateY(0);
    box-shadow: none;
}

.timeline-connector {
    position: absolute;
    left: 50%;
    width: 2px;
    background-color: var(--timeline-connector);
    height: 100%;
    z-index: 0;
}

.timeline-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--timeline-dot);
    border: 2px solid var(--timeline-dot-border);
    position: relative;
    z-index: 1;
    flex-shrink: 0;
    margin-top: 4px;
}

.no-sections {
    text-align: center;
    padding: 2rem;
    color: var(--text-color);
    line-height: 1.6;
    font-size: 1.2em;
    background-color: var(--section-bg);
    border: 2px dashed var(--section-border);
    border-radius: 8px;
    margin: 20px 0;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.no-sections p {
    margin: 0.5rem 0;
}

.no-sections .download-link {
    color: var(--info-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.no-sections .download-link:hover {
    color: var(--info-color);
    opacity: 0.8;
    text-decoration: underline;
}

.no-sections:before {
    content: '📋';
    display: block;
    font-size: 3em;
    margin-bottom: 15px;
}

/* Menu button that appears in responsive mode */
.menu-button {
    position: fixed;
    top: 0; /* Position at top of screen */
    left: 0;
    z-index: 1000;
    width: 12px; /* Slightly wider */
    height: 50px; /* Shorter height */
    border-radius: 0 0 4px 0; /* Only round bottom-right corner */
    background-color: var(--button-bg);
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    display: none; /* Hidden by default, shown in responsive mode */
    border: 1px solid var(--button-border);
    border-left: none; /* Remove left border for seamless edge attachment */
    border-top: none; /* Remove top border for seamless attachment */
    transition: background-color 0.3s ease;
}

.menu-button:hover {
    background-color: var(--button-hover);
}

.menu-icon {
    width: 6px;
    height: 30px;
    position: relative;
    transform: rotate(0deg);
    transition: .5s ease-in-out;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
}

.menu-icon span {
    display: block;
    height: 4px;
    width: 4px;
    background: var(--text-color);
    border-radius: 50%;
    opacity: 1;
    transform: rotate(0deg);
    transition: .25s ease-in-out;
    position: static;
}

/* No need for absolute positioning with the new layout */
.menu-icon span:nth-child(1) {
    margin-top: 3px;
}

.menu-icon span:nth-child(2) {
    margin: 2px 0;
}

.menu-icon span:nth-child(3) {
    margin-bottom: 3px;
}

/* Animation when menu is open - dots move closer together */
.menu-button.open .menu-icon span:nth-child(1) {
    transform: scale(1.2);
    background-color: var(--button-hover);
}

.menu-button.open .menu-icon span:nth-child(2) {
    transform: scale(1.2);
    background-color: var(--button-hover);
}

.menu-button.open .menu-icon span:nth-child(3) {
    transform: scale(1.2);
    background-color: var(--button-hover);
}

/* Popup menu styling */
.popup-menu {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999;
    background-color: var(--container-bg);
    border-radius: 0 0 8px 0;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.2);
    padding: 15px;
    padding-left: 20px;
    width: auto;
    min-width: 250px;
    max-width: 80%;
    display: none; /* Hidden by default */
    flex-direction: column;
    gap: 15px;
    border: 1px solid var(--section-border);
    border-left: none; /* Remove left border for seamless edge attachment */
    border-top: none; /* Remove top border for seamless edge attachment */
}

.popup-menu.open {
    display: flex;
}

/* Popup menu row layout */
.popup-menu-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 15px;
}

/* General popup menu section styling */
.popup-menu .header-section {
    width: auto;
    margin: 0;
}

/* Import section - left aligned */
.popup-import-section {
    justify-content: flex-start !important;
    margin-right: auto;
}

/* Theme section - right aligned */
.popup-theme-section {
    justify-content: flex-end !important;
    margin-left: auto;
}

/* Start time section - full width and centered */
.popup-starttime-section {
    width: 100% !important;
    justify-content: center !important;
    padding: 5px 0;
}

.popup-starttime-section .start-time-container {
    width: 100%;
    justify-content: center;
}

/* Next section display for landscape mode */
.next-section-display {
    display: none; /* Hidden by default */
    background-color: var(--section-bg);
    padding: 10px 15px;
    margin: 10px 0;
    border-radius: 6px;
    border-left: 4px solid var(--timeline-dot);
    font-size: 18px;
}

.next-section-display .next-section-label {
    font-weight: bold;
    color: var(--text-color);
}

.next-section-display .next-section-name {
    color: var(--text-color);
}

/* Responsive layout for small screens and mobile landscape */
@media (max-width: 900px), (max-height: 600px) and (orientation: landscape) {
    /* CSS for all responsive modes */

        /* Show menu button in responsive mode */
    .menu-button {
        display: flex;
    }
    
        /* Hide header in responsive mode and remove its space */
    .header {
        display: none;
        height: 0;
        margin: 0;
        padding: 0;
        overflow: hidden;
        visibility: hidden;
        position: absolute;
    }
    
    /* Adjust container to account for removed header */
    .container {
        padding-top: 0;
    }
    
    /* Adjust current-info-container to go to the top */
    .current-info-container {
        margin: 0;
        padding: 25px 15px 15px;
        top: 0;
        border: none;
        border-radius: 0;
        background-color: var(--container-bg);
    }
    
    .current-section-display {
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .section-info-display {
        text-align: center;
        margin-bottom: 10px;
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    
    #current-section-name {
        text-align: center;
        width: 100%;
        justify-content: center;
        display: flex;
    }
    
    #current-section-duration {
        display: none; /* Hide the duration display on small screens */
    }

    /* Stronger selector to override JavaScript styling */
    html body .container .current-info-container #time-remaining,
    #time-remaining.narrow-screen,
    #time-remaining.portrait-mode.narrow-screen {
        font-size: clamp(120px, 20vw, 400px) !important;
        margin: 10px 0 !important;
        padding: 8px 5px !important;
        width: 100% !important;
        box-sizing: border-box !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        text-align: center !important;
        line-height: 0.85 !important;
        max-height: none !important;
    }
    
    /* Hide time adjustment buttons at same breakpoint */
    .time-adjustment-buttons {
        display: none;
    }
    
    /* Timeline modifications for small screens */
    .timeline-item {
        padding: 6px 10px;
        margin-bottom: 3px;
    }
    
    /* Hide time box and duration input on narrow screens */
    .timeline-item .time-box,
    .timeline-item .duration-container {
        display: none;
    }
    
    /* Make section name take full width */
    .timeline-item .section-name {
        flex: 1;
        font-size: 18px;
        padding-right: 0;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    /* Simplify timeline items */
    .timeline-item {
        border-left: 3px solid var(--timeline-dot);
        padding-left: 10px;
        gap: 8px;
    }
}

/* Next section display for landscape mode */
.next-section-display {
    display: none; /* Hidden by default */
    background-color: var(--section-bg);
    padding: 12px 15px;
    margin: 15px 20px;
    border-radius: 6px;
    border-left: 4px solid var(--timeline-dot);
    font-size: 18px;
    line-height: 1.4;
}

.next-section-display .next-section-label {
    font-weight: bold;
    color: var(--text-color);
    margin-right: 5px;
}

.next-section-display .next-section-name {
    color: var(--text-color);
}

/* Specific rules for landscape orientation on mobile */
@media (max-height: 600px) and (orientation: landscape) {
    /* Full page layout with flexbox */
    body {
        display: flex;
        flex-direction: column;
        min-height: 100vh;
        max-height: 100vh;
        overflow: hidden;
        padding: 0;
        margin: 0;
    }
    
    .container {
        flex: 1;
        display: flex;
        flex-direction: column;
        min-height: 100vh;
        max-height: 100vh;
        justify-content: space-between;
        padding: 0;
        margin: 0;
    }
    
    /* Hide timeline container in landscape mode */
    .timeline-container, 
    #presentation-timeline {
        display: none;
    }
    
    /* Adjust current info container to take minimal space */
    .current-info-container {
        padding: 10px 15px 5px;
        margin: 0;
        flex: 0 0 auto;
    }
    
    /* Make section info more compact */
    .section-info-display {
        margin-bottom: 0;
    }
    
    #current-section-name {
        font-size: clamp(36px, 6vh, 56px);
        margin-bottom: 0;
    }
    
    /* Create a spacer element to push content to top and bottom */
    .current-section-display {
        display: flex;
        flex-direction: column;
        flex: 1;
        align-items: center;
        justify-content: center;
    }
    
    /* Landscape mode layout - fully fixed approach */
    .container {
        display: flex;
        flex-direction: column;
        height: 100vh;
        max-height: 100vh;
        padding: 0;
    }

    .current-info-container {
        flex: 1;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        height: auto;
    }
    
    /* Ensure section-info-display stays small with appropriate spacing */
    .section-info-display {
        flex: 0 0 auto;
        margin: 0;
        padding-bottom: 5px; /* 5px of space below section info */
    }
    
    /* Make current-section-display take all available space with tighter spacing */
    .current-section-display {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: flex-start; /* Change to flex-start to reduce space */
        width: 100%;
        height: 100%;
        flex: 1;
        gap: 0; /* Remove any gap between elements */
    }
    
    /* Timer with dynamic sizing via JavaScript */
    #time-remaining {
        /* In landscape, font size is ONLY controlled by JavaScript */
        font-size: initial; /* Remove default without !important, let JS take over completely */
        margin: 0;
        margin-top: 0; /* Remove negative margin to maintain spacing */
        padding: 0;
        line-height: 0.85;
        display: flex;
        align-items: center;
        justify-content: center;
        flex: 1;
        box-shadow: none;
        background: transparent;
        text-overflow: ellipsis;
        border-width: 5px !important; /* Thicker border in landscape mode */
        text-align: center;
        width: 100%;
    }
    
    /* Position next section display at the very bottom */
    .next-section-display {
        display: block;
        margin: 0;
        padding: 10px 15px;
        border-radius: 0;
        border: none;
        border-top: 1px solid var(--section-border);
        width: 100%;
        box-sizing: border-box;
        background-color: var(--container-bg);
        flex: 0 0 auto;
        position: sticky;
        bottom: 0;
    }
    
    /* Landscape mode color-specific styles with thicker borders */
    #time-remaining.green {
        border-width: 10px !important;
    }
    
    #time-remaining.yellow {
        border-width: 10px !important;
    }
    
    #time-remaining.red {
        border-width: 10px !important;
    }
    
    #time-remaining.blue {
        border-width: 10px !important;
    }
}

/* Theme Toggle Button */
.theme-toggle-btn {
    background-color: var(--button-bg);
    border: 2px solid var(--button-border);
    border-radius: 6px;
    color: var(--button-text);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    padding: 6px 12px;
    transition: all 0.2s ease;
    white-space: nowrap;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 70px;
    height: 36px;
}

.theme-toggle-btn:hover {
    background-color: var(--button-hover);
    border-color: var(--button-hover);
}

.theme-text {
    display: inline-block;
    text-align: center;
}