/* ========================================
   Swietnik - Premium Holiday Calendar
   ======================================== */

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

/* CSS Variables */
:root {
    --color-bg-primary: #0a0a0f;
    --color-bg-secondary: #12121a;
    --color-bg-tertiary: #1a1a24;
    --color-bg-card: linear-gradient(135deg, rgba(26, 26, 36, 0.9) 0%, rgba(18, 18, 26, 0.95) 100%);
    --color-text-primary: #ffffff;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;
    --color-accent-primary: #8b5cf6;
    --color-accent-secondary: #a78bfa;
    --color-accent-glow: rgba(139, 92, 246, 0.4);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --gradient-button: linear-gradient(135deg, #8b5cf6 0%, #6366f1 100%);
    --gradient-card-border: linear-gradient(135deg, rgba(139, 92, 246, 0.3) 0%, rgba(99, 102, 241, 0.1) 100%);
    --shadow-glow: 0 0 60px var(--color-accent-glow);
    --shadow-card: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 5rem;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

.app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Animated Background */
.background-decoration {
    position: fixed;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
    z-index: 0;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    will-change: transform;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #8b5cf6 0%, transparent 70%);
    top: -15%;
    right: -10%;
    animation: orb-float-1 25s ease-in-out infinite;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #06b6d4 0%, transparent 70%);
    bottom: -10%;
    left: -10%;
    animation: orb-float-2 30s ease-in-out infinite;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #f472b6 0%, transparent 70%);
    top: 40%;
    left: 30%;
    animation: orb-float-3 20s ease-in-out infinite;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(139, 92, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(139, 92, 246, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

@keyframes orb-float-1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(20px, -20px) scale(0.95); }
}

@keyframes orb-float-2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-30px, 20px) scale(0.9); }
}

@keyframes orb-float-3 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(50px, 30px); }
}

/* Header */
.header {
    text-align: center;
    padding: var(--space-xl) var(--space-md) var(--space-lg);
    position: relative;
    z-index: 1;
}

.logo {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 700;
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.03em;
    line-height: 1.1;
    animation: logo-glow 3s ease-in-out infinite alternate;
}

@keyframes logo-glow {
    from { filter: drop-shadow(0 0 20px rgba(139, 92, 246, 0.3)); }
    to { filter: drop-shadow(0 0 40px rgba(139, 92, 246, 0.6)); }
}

.tagline {
    color: var(--color-text-secondary);
    font-size: 1rem;
    font-weight: 300;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-top: var(--space-xs);
}

/* Main Content */
.main-content {
    flex: 1;
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--space-md) var(--space-xl);
    position: relative;
    z-index: 1;
}

/* Date Display */
.date-display {
    text-align: center;
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    margin-bottom: var(--space-xl);
}

.day-name {
    display: block;
    font-size: 0.875rem;
    color: var(--color-accent-secondary);
    text-transform: uppercase;
    letter-spacing: 0.25em;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.date-full {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    font-weight: 600;
    color: var(--color-text-primary);
}

.today-badge {
    display: inline-block;
    margin-top: var(--space-sm);
    padding: 6px 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    background: var(--gradient-button);
    border-radius: var(--radius-full);
    color: white;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
    animation: badge-pulse 2s ease-in-out infinite;
}

@keyframes badge-pulse {
    0%, 100% { box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4); }
    50% { box-shadow: 0 4px 25px rgba(139, 92, 246, 0.7); }
}

/* Holidays Section */
.holidays-section {
    animation: content-fade-in 0.6s ease-out;
    min-height: 200px;
}

@keyframes content-fade-in {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.holidays-grid {
    display: grid;
    gap: var(--space-lg);
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

/* Holiday Card */
.holiday-card {
    position: relative;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.holiday-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-card);
    border-color: rgba(139, 92, 246, 0.2);
}

.card-accent {
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: var(--category-color, var(--color-accent-primary));
    box-shadow: 0 0 20px var(--category-color, var(--color-accent-primary));
}

/* Card Icon */
.card-icon {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--category-color, var(--color-accent-primary)) 15%, transparent);
    border-radius: var(--radius-md);
    color: var(--category-color, var(--color-accent-primary));
    border: 1px solid color-mix(in srgb, var(--category-color, var(--color-accent-primary)) 30%, transparent);
}

.card-icon svg {
    width: 24px;
    height: 24px;
}

.card-content {
    padding: var(--space-lg);
    padding-left: calc(var(--space-lg) + 12px);
    padding-right: calc(var(--space-lg) + 60px);
}

.category-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background: color-mix(in srgb, var(--category-color, var(--color-accent-primary)) 15%, transparent);
    color: var(--category-color, var(--color-accent-primary));
    border-radius: var(--radius-full);
    margin-bottom: var(--space-sm);
    border: 1px solid color-mix(in srgb, var(--category-color, var(--color-accent-primary)) 30%, transparent);
}

.subcategory {
    opacity: 0.8;
    font-weight: 500;
}

.subcategory::before {
    content: '/';
    margin-right: 8px;
    opacity: 0.5;
}

.holiday-name {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
    line-height: 1.3;
}

.holiday-description {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.learn-more {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--color-accent-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.learn-more:hover {
    color: var(--color-text-primary);
    gap: 14px;
}

.learn-more svg {
    transition: transform var(--transition-fast);
}

.learn-more:hover svg {
    transform: translate(3px, -3px);
}

.card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    align-items: center;
    margin-top: var(--space-sm);
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.share-btn:hover {
    background: var(--gradient-button);
    border-color: transparent;
    color: var(--color-text-primary);
}

.share-btn svg {
    width: 16px;
    height: 16px;
}

/* No Holidays State */
.no-holidays {
    text-align: center;
    padding: var(--space-2xl);
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
}

.no-holidays-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.no-holidays-icon svg {
    width: 48px;
    height: 48px;
    opacity: 0.5;
}

.no-holidays-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.no-holidays-hint {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* Bottom Navigation */
.bottom-navigation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
    padding: var(--space-md);
}

.bottom-navigation .nav-button {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    border: none;
    border-radius: var(--radius-full);
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.bottom-navigation .nav-button:hover:not(:disabled) {
    background: var(--gradient-button);
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
    border-color: transparent;
}

.bottom-navigation .nav-button:active:not(:disabled) {
    transform: scale(0.98);
}

.bottom-navigation .nav-button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.bottom-navigation .nav-button svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.nav-label {
    white-space: nowrap;
}

.nav-today {
    background: var(--gradient-button);
    border-color: transparent;
    box-shadow: 0 0 20px var(--color-accent-glow);
}

.nav-today:hover:not(:disabled) {
    box-shadow: var(--shadow-glow), 0 0 30px var(--color-accent-glow);
}


/* Footer */
.footer {
    text-align: center;
    padding: var(--space-xl) var(--space-md);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    position: relative;
    z-index: 1;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Loading State */
.loading .holidays-section {
    opacity: 0.4;
    filter: blur(2px);
}

.loading .nav-button {
    opacity: 0.4;
    pointer-events: none;
}

/* Slide Animations */
.slide-out-left {
    animation: slide-out-left 0.35s ease-in forwards;
}

.slide-out-right {
    animation: slide-out-right 0.35s ease-in forwards;
}

.slide-in-left {
    animation: slide-in-left 0.35s ease-out forwards;
}

.slide-in-right {
    animation: slide-in-right 0.35s ease-out forwards;
}

@keyframes slide-out-left {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(-60px); }
}

@keyframes slide-out-right {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(60px); }
}

@keyframes slide-in-left {
    from { opacity: 0; transform: translateX(60px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slide-in-right {
    from { opacity: 0; transform: translateX(-60px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .bottom-navigation {
        flex-wrap: wrap;
        gap: var(--space-sm);
    }

    .bottom-navigation .nav-button {
        padding: var(--space-sm) var(--space-md);
        font-size: 0.875rem;
    }


    .holidays-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .card-content {
        padding: var(--space-md);
        padding-left: calc(var(--space-md) + 12px);
        padding-right: var(--space-md);
    }

    .card-icon {
        position: static;
        margin-bottom: var(--space-sm);
        width: 40px;
        height: 40px;
    }

    .card-icon svg {
        width: 20px;
        height: 20px;
    }

    .holiday-name {
        font-size: 1.25rem;
    }

    .orb-1 { width: 400px; height: 400px; }
    .orb-2 { width: 350px; height: 350px; }
    .orb-3 { width: 250px; height: 250px; }
}

@media (max-width: 480px) {
    .header {
        padding: var(--space-lg) var(--space-sm) var(--space-md);
    }

    .main-content {
        padding: 0 var(--space-sm) var(--space-lg);
    }

    .tagline {
        font-size: 0.75rem;
    }

    .date-display {
        padding: var(--space-sm) var(--space-md);
    }

    .bottom-navigation .nav-button {
        padding: var(--space-xs) var(--space-sm);
        font-size: 0.8rem;
    }

    .bottom-navigation .nav-button svg {
        width: 18px;
        height: 18px;
    }
}

/* Focus Styles */
.nav-button:focus-visible,
.learn-more:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 4px;
}

/* Selection */
::selection {
    background: var(--color-accent-primary);
    color: white;
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--color-bg-tertiary);
    border-radius: 5px;
    border: 2px solid var(--color-bg-primary);
}

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