/* ===== CSS Variables & Design System ===== */
:root {
    /* Colors */
    --color-primary: hsl(250, 84%, 54%);
    --color-primary-light: hsl(250, 84%, 64%);
    --color-primary-dark: hsl(250, 84%, 44%);
    --color-secondary: hsl(280, 70%, 60%);
    --color-accent: hsl(320, 85%, 60%);

    --color-success: hsl(142, 76%, 36%);
    --color-success-light: hsl(142, 76%, 46%);
    --color-warning: hsl(38, 92%, 50%);
    --color-danger: hsl(0, 84%, 60%);
    --color-construction: hsl(30, 100%, 50%);

    --color-bg-primary: hsl(240, 21%, 8%);
    --color-bg-secondary: hsl(240, 15%, 12%);
    --color-bg-tertiary: hsl(240, 12%, 16%);
    --color-bg-card: hsla(240, 15%, 18%, 0.6);

    --color-text-primary: hsl(0, 0%, 98%);
    --color-text-secondary: hsl(0, 0%, 75%);
    --color-text-tertiary: hsl(0, 0%, 60%);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    --gradient-accent: linear-gradient(135deg, var(--color-accent) 0%, var(--color-primary) 100%);
    --gradient-bg: linear-gradient(180deg, hsl(240, 21%, 8%) 0%, hsl(250, 25%, 12%) 100%);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(124, 58, 237, 0.3);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--gradient-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== Container ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

/* ===== Header ===== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: var(--color-bg-card);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-lg);
}

.header-content {
    flex: 1;
}

.header-title {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.header-subtitle {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
    margin-left: 3.5rem;
}

.current-time {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
    padding: var(--spacing-md) var(--spacing-lg);
    background: rgba(124, 58, 237, 0.1);
    border-radius: var(--radius-md);
    border: 1px solid rgba(124, 58, 237, 0.3);
}

/* ===== Section Titles ===== */
.section-title {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
}

/* ===== Rooms Grid ===== */
.rooms-section {
    margin-bottom: var(--spacing-2xl);
}

.rooms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-xl);
}

/* ===== Room Card ===== */
.room-card {
    background: var(--color-bg-card);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.room-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.room-card:hover::before {
    opacity: 1;
}

.room-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border-color: rgba(124, 58, 237, 0.3);
}

.room-card.room-disabled {
    opacity: 0.7;
}

.room-card.room-disabled::before {
    background: var(--color-construction);
}

/* ===== Room Status Badge ===== */
.room-status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.room-status-badge.available {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success-light);
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.room-status-badge.booked {
    background: rgba(251, 146, 60, 0.15);
    color: var(--color-warning);
    border: 1px solid rgba(251, 146, 60, 0.3);
}

.room-status-badge.in-use {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.room-status-badge.construction {
    background: rgba(255, 153, 0, 0.15);
    color: var(--color-construction);
    border: 1px solid rgba(255, 153, 0, 0.3);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: currentColor;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.6;
        transform: scale(1.2);
    }
}

/* ===== Room Header ===== */
.room-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.room-name {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.room-capacity {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(124, 58, 237, 0.1);
    border-radius: var(--radius-md);
    font-weight: 500;
}

/* ===== Room Amenities ===== */
.room-amenities {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.amenity {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.amenity:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* ===== Room Schedule ===== */
.room-schedule {
    min-height: 80px;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.no-bookings {
    color: var(--color-text-tertiary);
    font-style: italic;
    text-align: center;
}

.booking-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    background: rgba(124, 58, 237, 0.1);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--color-primary);
}

.booking-time {
    font-weight: 600;
    color: var(--color-primary-light);
}

.booking-title {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* ===== Construction Notice ===== */
.construction-notice {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: rgba(255, 153, 0, 0.1);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 153, 0, 0.3);
    margin-bottom: var(--spacing-lg);
}

.construction-notice .icon {
    font-size: 2rem;
}

.construction-notice p {
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* ===== Buttons ===== */
.btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    width: 100%;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(124, 58, 237, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
}

.btn-disabled {
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-text-tertiary);
    cursor: not-allowed;
}

/* ===== Calendar ===== */
.booking-section {
    margin-bottom: var(--spacing-2xl);
}

.calendar-container {
    background: var(--color-bg-card);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-md);
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.calendar-date {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.calendar-nav {
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(124, 58, 237, 0.2);
    color: var(--color-primary-light);
    border-radius: var(--radius-md);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.calendar-nav:hover {
    background: rgba(124, 58, 237, 0.3);
    transform: scale(1.1);
}

/* ===== Timeline ===== */
.timeline {
    display: grid;
    gap: var(--spacing-sm);
}

.timeline-hour {
    display: grid;
    grid-template-columns: 80px 1fr 1fr;
    gap: var(--spacing-md);
    align-items: center;
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.timeline-hour:hover {
    background: rgba(0, 0, 0, 0.3);
}

.hour-label {
    font-weight: 600;
    color: var(--color-text-secondary);
}

.hour-slot {
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    text-align: center;
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-fast);
}

.hour-slot.available {
    background: rgba(34, 197, 94, 0.1);
    border-color: rgba(34, 197, 94, 0.3);
    color: var(--color-success-light);
}

.hour-slot.booked {
    background: rgba(124, 58, 237, 0.2);
    border-color: rgba(124, 58, 237, 0.4);
    color: var(--color-primary-light);
}

.hour-slot.in-use {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.4);
    color: var(--color-danger);
    animation: blink 2s ease-in-out infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.6;
    }
}

/* ===== Modal ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
}

.modal-content {
    position: relative;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    animation: modalSlideIn var(--transition-normal);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
}

.modal-title {
    font-size: 1.75rem;
    font-weight: 600;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal-close {
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text-primary);
    border-radius: var(--radius-md);
    font-size: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

/* ===== Form ===== */
.booking-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input {
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

/* ===== Availability Check ===== */
.availability-check {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 500;
    display: none;
}

.availability-check.available {
    display: block;
    background: rgba(34, 197, 94, 0.15);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: var(--color-success-light);
}

.availability-check.unavailable {
    display: block;
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--color-danger);
}

.availability-check.warning {
    display: block;
    background: rgba(251, 146, 60, 0.15);
    border: 1px solid rgba(251, 146, 60, 0.3);
    color: var(--color-warning);
}

/* ===== Form Actions ===== */
.form-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

/* ===== Toast ===== */
.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-weight: 600;
    transform: translateX(400px);
    transition: transform var(--transition-normal);
    z-index: 2000;
}

.toast.show {
    transform: translateX(0);
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }

    .header {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .header-title {
        font-size: 1.75rem;
        justify-content: center;
    }

    .header-subtitle {
        margin-left: 0;
    }

    .rooms-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .timeline-hour {
        grid-template-columns: 60px 1fr;
        font-size: 0.875rem;
    }

    .form-actions {
        grid-template-columns: 1fr;
    }
}

/* ===== Scrollbar Styling ===== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: var(--radius-md);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary-light);
}