:root {
    --color-available: #4CAF50;
    --color-own-booking: #2196F3;
    --color-occupied: #9E9E9E;
    --color-maintenance: #F44336;
    --color-primary: #2196F3;
    --color-text: #333;
    --color-background: #fff;
}

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
    min-width: 320px;
    color: var(--color-text);
    background-color: var(--color-background);
}

nav {
    background-color: var(--color-primary);
    padding: 0.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: space-around;
}

nav ul li {
    flex: 1;
    min-width: auto;
    text-align: center;
}

nav ul li a {
    color: white;
    text-decoration: none;
    padding: 0.5rem;
    border-radius: 4px;
    transition: background-color 0.2s;
    display: block;
    font-size: 0.9rem;
    white-space: nowrap;
}

nav ul li a.active {
    background-color: rgba(255,255,255,0.2);
    font-weight: bold;
}

nav ul li a:hover {
    background-color: rgba(255,255,255,0.1);
}

main {
    padding: 0.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.calendar-container {
    max-width: 1200px;
    margin: 5px auto;
    padding: 5px;
    background-color: var(--color-background);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    -webkit-overflow-scrolling: touch;
    position: relative; /* For sticky header */
}



.feedback-container {
    margin-bottom: 15px;
    min-height: 40px;
}

.calendar-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    padding: 0.5rem;
    background-color: #f5f5f5;
    border-radius: 4px;
    flex-wrap: wrap;
}

.calendar-navigation button {
    background-color: var(--color-primary);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: opacity 0.2s;
    /* Remove conflicting flex property */
    flex: 0 1 auto;
    min-width: 120px;
}

.calendar-navigation button:hover {
    opacity: 0.9;
}

#currentWeekDisplay {
    width: 100%;
    order: -1;
    text-align: center;
    margin-bottom: 8px;
    font-size: 1rem;
    font-weight: bold;
    color: var(--color-text);
}

.calendar {
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow-x: auto;
    overflow-y: hidden;
    background-color: white;
    transform: translateZ(0);
    -webkit-transform: translate3d(0,0,0);
    -webkit-overflow-scrolling: touch;
    min-width: min-content; /* Ensures content doesn't shrink below natural width */
}

.calendar-header {
    display: grid;
    grid-template-columns: repeat(7, minmax(100px, 1fr));
    min-width: min-content;
    background-color: #f5f5f5;
    border-bottom: 1px solid #ddd;
    position: sticky;
    top: 0;
    z-index: 1;
    background-color: #f5f5f5;
    border-bottom: 1px solid #ddd;
}

.calendar-header-cell {
    padding: 4px 2px;
    text-align: center;
    font-weight: bold;
    color: var(--color-text);
    font-size: 0.75rem;
}

.calendar-header-cell .weekday {
    margin-bottom: 0;
}

.calendar-header-cell .date {
    font-size: 0.65rem;
    color: #666;
}

.calendar-grid {
    display: flex;
    flex-direction: column;
}

.calendar-row {
    display: grid;
    grid-template-columns: repeat(7, minmax(100px, 1fr));
    min-width: min-content;
    border-bottom: 1px solid #ddd;
}

/* Add scroll indicators */
.calendar::before,
.calendar::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 20px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s;
}

.calendar::before {
    left: 0;
    background: linear-gradient(to right, rgba(0,0,0,0.1), transparent);
}

.calendar::after {
    right: 0;
    background: linear-gradient(to left, rgba(0,0,0,0.1), transparent);
}

.calendar.scroll-left::before {
    opacity: 1;
}

.calendar.scroll-right::after {
    opacity: 1;
}

.time-slot {
    padding: 4px 2px;
    border-right: 1px solid #ddd;
    min-height: 45px;
    cursor: pointer;
    transition: background-color 0.2s, opacity 0.2s;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 1px;
    font-size: 0.8rem;
}

.time-slot .time-range {
    font-weight: bold;
    font-size: 0.65rem;
    margin: 0;
    white-space: nowrap;
}

.time-slot .booking-email {
    font-size: 0.6rem;
    margin-top: 1px;
    word-break: break-all;
    overflow-wrap: break-word;
    hyphens: auto;
    -webkit-hyphens: auto;
}

.time-slot.available {
    background-color: var(--color-available);
    color: white;
}

.time-slot.own-booking {
    background-color: var(--color-own-booking);
    color: white;
    cursor: pointer;
}

.time-slot.occupied {
    background-color: var(--color-occupied);
    color: white;
    cursor: not-allowed;
}

.time-slot:hover.available {
    opacity: 0.9;
}

.time-slot:hover.own-booking {
    opacity: 0.9;
}

.dialog-overlay {
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    color: white;
}

.loading-spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.dialog-content {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    max-width: 400px;
    width: 90%;
}

.dialog-buttons {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}

.dialog-buttons button {
    padding: 8px 16px;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-weight: bold;
    transition: opacity 0.2s;
}

.dialog-buttons .cancel-btn {
    background-color: #9e9e9e;
    color: white;
}

.dialog-buttons .confirm-btn {
    background-color: var(--color-maintenance);
    color: white;
}

.dialog-buttons button:hover {
    opacity: 0.9;
}

.login-container {
    max-width: 400px;
    margin: 2rem auto;
    padding: 2rem;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.login-container h1 {
    margin-bottom: 1rem;
    color: var(--color-text);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-control {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    font-size: max(16px, 1rem);
}

.form-control:focus {
    scroll-margin-top: 120px;
    scroll-margin-bottom: 200px;
}

.login-button {
    background-color: var(--color-primary);
    color: white;
    border: none;
    padding: 0.75rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: opacity 0.2s;
}

.login-button:hover {
    opacity: 0.9;
}

.alert {
    padding: 12px 20px;
    border-radius: 4px;
    margin-bottom: 10px;
    animation: fadeIn 0.3s ease-in;
}

.alert-success {
    background-color: var(--color-available);
    color: white;
}

.alert-error {
    background-color: var(--color-maintenance);
    color: white;
}

.alert-info {
    background-color: var(--color-own-booking);
    color: white;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.my-bookings-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 1rem;
}

.my-bookings-container h2 {
    color: var(--color-text);
    margin-bottom: 2rem;
    text-align: center;
}

.booking-cards {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.booking-card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
}

.booking-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.booking-header {
    background: var(--color-primary);
    color: white;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.booking-date {
    font-size: 1.2rem;
    font-weight: bold;
}

.booking-status {
    background: rgba(255,255,255,0.2);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.9rem;
}

.booking-details {
    padding: 1rem;
}

.booking-time {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.time-icon {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid currentColor;
    border-radius: 50%;
    position: relative;
}

.time-icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 8px;
    height: 2px;
    background: currentColor;
    transform-origin: 0 50%;
    transform: rotate(45deg);
}

.time-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 6px;
    height: 2px;
    background: currentColor;
    transform-origin: 0 50%;
    transform: rotate(-90deg);
}

.booking-actions {
    display: flex;
    justify-content: flex-end;
}

.cancel-form {
    margin: 0;
}

.cancel-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--color-maintenance);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: opacity 0.2s;
}

.cancel-button:hover {
    opacity: 0.9;
}

.cancel-icon {
    font-size: 1.1rem;
}

.no-bookings {
    text-align: center;
    padding: 3rem 1rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.book-now-button {
    display: inline-block;
    background: var(--color-available);
    color: white;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    margin-top: 1rem;
    font-weight: bold;
    transition: opacity 0.2s;
}

.book-now-button:hover {
    opacity: 0.9;
}

.admin-container {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 1rem;
}

.admin-container h2 {
    color: var(--color-text);
    margin-bottom: 2rem;
    text-align: center;
}

.admin-section {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.admin-section h3 {
    color: var(--color-text);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.stat-card {
    background: #f5f5f5;
    padding: 1rem;
    border-radius: 6px;
    text-align: center;
}

.stat-title {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--color-primary);
}

.maintenance-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    align-items: end;
}

.maintenance-form .form-group {
    margin-bottom: 0;
}

.admin-button {
    background-color: var(--color-primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: opacity 0.2s;
}

.admin-button:hover {
    opacity: 0.9;
}

.maintenance-list {
    display: grid;
    gap: 1rem;
}

.maintenance-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #f5f5f5;
    padding: 1rem;
    border-radius: 6px;
}

.maintenance-info {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.maintenance-date {
    font-weight: bold;
}

.maintenance-time {
    color: #666;
}

.maintenance-delete-form {
    margin: 0;
}

.delete-button {
    background-color: var(--color-maintenance);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: opacity 0.2s;
}

.delete-button:hover {
    opacity: 0.9;
}

.no-maintenance {
    text-align: center;
    color: #666;
    padding: 1rem;
}

.chart-container {
    height: 400px;
    margin: 20px 0;
    padding: 10px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.user-stats-table {
    overflow-x: auto;
    margin: 20px 0;
}

.user-stats-table table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 8px;
    overflow: hidden;
}

.user-stats-table th,
.user-stats-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #eee;
}

.user-stats-table th {
    background: var(--color-primary);
    color: white;
    font-weight: bold;
}

.user-stats-table tr:last-child td {
    border-bottom: none;
}

.user-stats-table tr:hover td {
    background: #f5f5f5;
}

/* Consolidate media queries */
@media (max-width: 768px) {
    .calendar {
        position: relative;
        scrollbar-width: none; /* Firefox */
        -ms-overflow-style: none; /* IE and Edge */
    }

    .calendar::-webkit-scrollbar {
        display: none; /* Chrome, Safari, Opera */
    }

    /* Ensure cells don't get too narrow */
    .calendar-header,
    .calendar-row {
        grid-template-columns: repeat(7, minmax(80px, 1fr));
    }
    
    .calendar-container {
        margin: 2px;
        padding: 2px;
    }

    .calendar-container h2 {
        color: var(--color-text);
        margin-bottom: 2rem;
        text-align: center;
    }

    .calendar-navigation {
        flex-direction: column;
        gap: 10px;
    }

    .calendar-navigation button {
        width: 100%;
        min-width: unset;
    }

    #currentWeekDisplay {
        font-size: 0.9rem;
        margin-bottom: 10px;
    }

    .calendar-header-cell {
        padding: 2px 1px;
    }

    .time-slot {
        min-height: 40px;
        padding: 4px 2px;
    }

    .time-slot .time-range {
        font-size: 0.6rem;
    }

    .time-slot .booking-email {
        font-size: 0.55rem;
    }
    
    .my-bookings-container {
        padding: 1rem 0.5rem;
    }
    
    .booking-cards {
        grid-template-columns: 1fr;
    }
    
    .booking-card {
        margin-bottom: 1rem;
    }

    .maintenance-form {
        grid-template-columns: 1fr;
    }
    
    .maintenance-card {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .maintenance-info {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .chart-container {
        height: 300px;
    }
    
    .user-stats-table {
        font-size: 0.9em;
    }
    
    .user-stats-table th,
    .user-stats-table td {
        padding: 8px;
    }
}

@media (max-width: 480px) {
    nav {
        padding: 0.25rem;
    }

    nav ul {
        gap: 0.25rem;
    }

    nav ul li a {
        padding: 0.4rem 0.25rem;
        font-size
        
    .calendar-header-cell {
        font-size: 0.8em;
    }
    
    .time-slot {
        font-size: 0.8em;
    }

    .booking-email {
        font-size: 0.6em;
    }
    
    .booking-header {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
    
    .booking-time {
        font-size: 0.9rem;
    }
    
    .cancel-button {
        width: 100%;
        justify-content: center;
    }
}
/* Move Safari fixes to single location */
@supports (-webkit-touch-callout: none) {
    .calendar-container {
        -webkit-text-size-adjust: 100%;
        -webkit-overflow-scrolling: touch;
    }

    .calendar {
        transform: translateZ(0);
        -webkit-transform: translate3d(0,0,0);
    }

    /* Consolidate user selection prevention */
    .calendar,
    .calendar * {
        -webkit-user-select: none;
        user-select: none;
        -webkit-tap-highlight-color: transparent;
    }

    /* iOS Safari keyboard and large text accessibility fixes */
    html, body {
        height: 100%;
        overflow-x: hidden;
    }

    .login-container {
        padding-bottom: env(safe-area-inset-bottom, 20px);
        padding-bottom: calc(env(safe-area-inset-bottom, 20px) + 150px);
    }

    .form-control:focus {
        position: relative;
        z-index: 10;
    }

    .login-form {
        padding-top: 20px;
    }
}

/* Smaller screens */
@media (max-width: 360px) {
    nav ul li a {
        font-size: 0.8rem;
        padding: 0.35rem 0.2rem;
    }
    
    .calendar-container {
        padding: 5px;
        margin: 5px;
    }

    .time-slot {
        padding: 4px 2px;
        min-height: 50px;
    }

    .time-slot .time-range {
        font-size: 0.65rem;
    }

    .time-slot .booking-email {
        font-size: 0.6rem;
    }

    .calendar-navigation button {
        padding: 6px;
        font-size: 0.8rem;
    }

    #currentWeekDisplay {
        font-size: 0.9rem;
    }
}

/* Loading overlay styles */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    border-radius: 8px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-overlay p {
    color: var(--color-text);
    text-align: center;
    margin: 0;
    padding: 0 1rem;
}
/* Status colors with improved tap states */
.time-slot.available:active {
    opacity: 0.8;
}

.time-slot.own-booking:active {
    opacity: 0.8;
}

.time-slot.occupied {
    cursor: not-allowed;
}

/* Prevent text selection during interactions */
.calendar * {
    -webkit-user-select: none;
    user-select: none;
}