/**
 * Sport-Club.eu - Modern & Dynamic Stylesheet
 * Moderní design s animacemi, gradienty a interaktivními prvky
 */

/* ========================================
   CSS Variables
   ======================================== */
:root {
    /* Modern Color Palette */
    --primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --primary-solid: #667eea;
    --primary-dark: #5568d3;
    --accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-solid: #f5576c;
    --success: #10b981;
    --info: #3b82f6;

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(255, 255, 255, 0.18);

    /* Neutral Colors */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #0f172a;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.5);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Poppins', var(--font-sans);

    /* Transitions */
    --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background: var(--bg-secondary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    background: var(--primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradient-shift 3s ease infinite;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--text-primary);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* ========================================
   Header & Navigation - Glassmorphism
   ======================================== */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    animation: slideDown 0.5s ease-out;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: var(--space-md);
    padding-right: var(--space-md);
}

.navbar-brand {
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    transition: var(--transition-base);
    letter-spacing: -0.05em;
}

.navbar-brand:hover {
    transform: scale(1.05);
    filter: brightness(1.2);
}

.navbar-menu {
    display: flex;
    list-style: none;
    gap: var(--space-xs);
    align-items: center;
}

.navbar-menu a {
    position: relative;
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--space-xs) var(--space-md);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    overflow: hidden;
}

.navbar-menu a::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--primary);
    opacity: 0;
    transition: var(--transition-base);
    z-index: -1;
}

.navbar-menu a:hover::before,
.navbar-menu a.active::before {
    opacity: 0.1;
}

.navbar-menu a:hover,
.navbar-menu a.active {
    color: var(--primary-solid);
    transform: translateY(-2px);
}

/* Language Switcher */
.language-switcher {
    display: flex;
    gap: var(--space-xs);
    margin-left: var(--space-md);
}

.language-switcher a {
    padding: var(--space-xs) var(--space-sm) !important;
    font-size: 0.875rem;
    font-weight: 600;
    border: 2px solid transparent;
    transition: var(--transition-base);
}

.language-switcher a:hover {
    border-color: var(--primary-solid);
}

.language-switcher a.active {
    background: var(--primary);
    color: white !important;
    -webkit-text-fill-color: white;
    box-shadow: var(--shadow-glow);
}

/* ========================================
   Hero Section - Animated Gradient
   ======================================== */
.hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-xl) var(--space-md);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 200% 200%;
    animation: gradient-animation 15s ease infinite;
    overflow: hidden;
}

@keyframes gradient-animation {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    animation: pattern-move 20s linear infinite;
}

@keyframes pattern-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(60px, 60px); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero h1 {
    color: white;
    -webkit-text-fill-color: white;
    margin-bottom: var(--space-md);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease-out 0.2s backwards;
}

.hero p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: var(--space-lg);
    line-height: 1.8;
    animation: fadeInUp 1s ease-out 0.4s backwards;
}

/* ========================================
   Buttons - Modern & Interactive
   ======================================== */
.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md) var(--space-lg);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-smooth);
    overflow: hidden;
    white-space: nowrap;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.btn:hover::before {
    transform: translateX(100%);
}

.btn-primary {
    background: white;
    color: var(--primary-solid);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.btn-secondary {
    background: var(--primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.btn-outline {
    background: transparent;
    color: var(--primary-solid);
    border: 2px solid var(--primary-solid);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
}

/* ========================================
   Sections
   ======================================== */
.section {
    padding: var(--space-xl) var(--space-md);
    position: relative;
}

.section-light {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, white 100%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.8s ease-out;
}

.section-title h2 {
    margin-bottom: var(--space-sm);
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
}

/* ========================================
   Cards - Glassmorphism & Hover Effects
   ======================================== */
.card {
    position: relative;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: var(--transition-smooth);
    height: 100%;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--primary);
    opacity: 0;
    transition: var(--transition-base);
    z-index: 0;
}

.card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.card:hover::before {
    opacity: 0.05;
}

.card-img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: var(--transition-base);
}

.card:hover .card-img {
    transform: scale(1.1);
}

.card-body {
    position: relative;
    padding: var(--space-lg);
    z-index: 1;
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.card-text {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========================================
   Grid System
   ======================================== */
.row {
    display: grid;
    gap: var(--space-lg);
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.col-md-3 { grid-column: span 1; }
.col-md-4 { grid-column: span 1; }
.col-md-6 { grid-column: span 2; }
.col-md-8 { grid-column: span 2; }

/* ========================================
   Forms - Modern Input Design
   ======================================== */
.form-group {
    margin-bottom: var(--space-md);
}

.form-label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: 600;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: var(--space-md);
    font-size: 1rem;
    color: var(--text-primary);
    background: var(--bg-primary);
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-solid);
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--space-xl) 0 var(--space-md);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.5), transparent);
}

.footer a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-base);
}

.footer a:hover {
    color: white;
    transform: translateX(4px);
}

/* ========================================
   Cookie Consent - Glassmorphism
   ======================================== */
.cookie-consent-banner {
    position: fixed;
    bottom: var(--space-md);
    left: var(--space-md);
    right: var(--space-md);
    max-width: 500px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-xl);
    z-index: 9999;
    animation: slideInUp 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes slideInUp {
    from {
        transform: translateY(100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ========================================
   Animations & Utilities
   ======================================== */
.fade-in {
    animation: fadeIn 0.8s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-in-left {
    animation: slideInLeft 0.8s ease-out;
}

@keyframes slideInLeft {
    from {
        transform: translateX(-50px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Scroll Reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Utility Classes */
.text-center { text-align: center; }
.text-light { color: var(--text-light); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .navbar-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--glass-bg);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--space-md);
        gap: var(--space-sm);
    }

    .navbar-menu.active {
        display: flex;
    }

    .hero {
        min-height: 60vh;
        padding: var(--space-lg) var(--space-md);
    }

    h1 {
        font-size: 2.5rem;
    }

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

    .col-md-3,
    .col-md-4,
    .col-md-6,
    .col-md-8 {
        grid-column: span 1;
    }
}

/* Loading Animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}