/* ==========================================================================
   FK Ener Nové Dvory - Premium Stylesheet
   Colors: Blue #004aad, Gold #c4ac57 / #d1b96e, Dark #111b1e
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700;800;900&display=swap');

:root {
    --primary: #004aad;
    --primary-dark: #003580;
    --primary-light: #0066cc;
    --gold: #c4ac57;
    --gold-light: #d4be6a;
    --gold-dark: #a89245;
    --dark: #111b1e;
    --dark-light: #1a2730;
    --white: #ffffff;
    --off-white: #fafbfc;
    --gray-light: #f0f2f5;
    --gray: #e1e5ea;
    --gray-dark: #9ca3af;
    --text: #1f2937;
    --text-light: #6b7280;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --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-gold: 0 4px 14px rgba(196, 172, 87, 0.4);

    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.7;
    color: var(--text);
    background-color: var(--off-white);
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: var(--gold);
}

img {
    max-width: 100%;
    height: auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 36px;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    text-align: center;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
    opacity: 0;
    transition: var(--transition);
}

.btn:hover::before {
    opacity: 1;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dark) 100%);
    color: var(--dark);
    box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(196, 172, 87, 0.5);
    color: var(--dark);
}

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

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    z-index: 1000;
    transition: var(--transition);
}

.header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gold), var(--gold-light), var(--gold));
}

.header.scrolled {
    box-shadow: var(--shadow-lg);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 14px;
    color: var(--white);
    font-weight: 800;
    font-size: 1.1rem;
    letter-spacing: -0.5px;
}

.logo:hover {
    color: var(--gold);
}

.logo-img {
    width: 54px;
    height: 54px;
    object-fit: contain;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
    transition: var(--transition);
}

.logo:hover .logo-img {
    transform: rotate(-5deg) scale(1.05);
}

.logo-text {
    display: none;
}

@media (min-width: 768px) {
    .logo-text {
        display: inline;
    }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 4px;
}

.nav-menu a {
    display: block;
    padding: 10px 20px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 50px;
    transition: var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gold);
    transition: var(--transition);
    transform: translateX(-50%);
    border-radius: 1px;
}

.nav-menu a:hover {
    color: var(--white);
}

.nav-menu a:hover::after {
    width: calc(100% - 40px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: var(--transition);
}

.nav-toggle:hover {
    background: rgba(255,255,255,0.1);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

@media (max-width: 767px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 83px;
        left: 16px;
        right: 16px;
        flex-direction: column;
        background: var(--white);
        padding: 16px;
        gap: 4px;
        display: none;
        border-radius: 16px;
        box-shadow: var(--shadow-xl);
    }

    .nav-menu.active {
        display: flex;
        animation: slideDown 0.3s ease;
    }

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

    .nav-menu a {
        color: var(--text);
        padding: 14px 20px;
        border-radius: 12px;
    }

    .nav-menu a:hover {
        background: var(--gray-light);
        color: var(--primary);
    }

    .nav-menu a::after {
        display: none;
    }
}

/* Hero Section - Compact */
.hero {
    position: relative;
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(160deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
    padding: 120px 0 60px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 80%, rgba(196, 172, 87, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 40%);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M50 50m-40 0a40,40 0 1,0 80,0a40,40 0 1,0 -80,0' fill='none' stroke='%23ffffff' stroke-width='0.5' opacity='0.03'/%3E%3C/svg%3E");
    background-size: 100px 100px;
}

.hero-content {
    position: relative;
    text-align: center;
    color: var(--white);
    z-index: 1;
}

.hero-logo {
    width: 140px;
    height: 140px;
    margin-bottom: 20px;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-8px) rotate(1deg); }
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 6px;
    letter-spacing: -1px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1rem;
    margin-bottom: 28px;
    color: var(--gold-light);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
}

@media (max-width: 767px) {
    .hero {
        min-height: 45vh;
        padding: 100px 0 50px;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .hero-logo {
        width: 110px;
        height: 110px;
    }

    .hero-subtitle {
        font-size: 0.85rem;
        letter-spacing: 2px;
    }
}

/* Section Styles */
section {
    position: relative;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
    color: var(--dark);
    letter-spacing: -0.5px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.05rem;
    margin-bottom: 48px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.section-header {
    margin-bottom: 56px;
}

.section-header .section-title::after {
    content: '';
    display: block;
    width: 50px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--gold));
    margin: 20px auto 0;
    border-radius: 2px;
}

/* Events Section */
.events {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--off-white) 0%, var(--white) 100%);
}

.events::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray), transparent);
}

.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 28px;
}

.event-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray);
    display: flex;
    flex-direction: column;
}

.event-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.event-date {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 24px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.event-date::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
}

.event-date-day {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.event-date-month {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-top: 6px;
    opacity: 0.9;
    font-weight: 600;
}

.event-content {
    padding: 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.event-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
    line-height: 1.4;
}

.event-meta {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 16px;
    font-size: 0.9rem;
    color: var(--text-light);
}

.event-meta span {
    display: flex;
    align-items: center;
    gap: 10px;
}

.event-meta svg {
    width: 18px;
    height: 18px;
    fill: var(--gold);
    flex-shrink: 0;
}

.event-description {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-top: auto;
}

/* Sponsors Section */
.sponsors {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--white) 0%, var(--gray-light) 100%);
    position: relative;
}

.sponsors::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray), transparent);
}

.sponsors-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 20px;
}

.sponsor-item {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 200px;
    height: 120px;
    padding: 24px;
    background: var(--white);
    border-radius: 16px;
    transition: var(--transition);
    border: 1px solid var(--gray);
}

.sponsor-item:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-lg);
    border-color: var(--gold);
}

.sponsor-item img {
    max-width: 140px;
    max-height: 70px;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: var(--transition);
}

.sponsor-item:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

/* Footer */
.footer {
    background: linear-gradient(160deg, var(--dark) 0%, var(--dark-light) 100%);
    color: var(--white);
    padding: 80px 0 0;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--gold), var(--primary));
}

.footer::after {
    content: '';
    position: absolute;
    bottom: -50%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(196, 172, 87, 0.05) 0%, transparent 70%);
    pointer-events: none;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 60px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    position: relative;
    z-index: 1;
}

@media (max-width: 767px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .footer-brand {
        align-items: center;
    }
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-logo {
    width: 90px;
    height: 90px;
    margin-bottom: 16px;
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3));
}

.footer-club-name {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--white);
    margin-bottom: 8px;
}

.footer-tagline {
    color: var(--gold);
    font-size: 0.9rem;
    font-weight: 500;
}

.footer h3 {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--gold);
    margin-bottom: 24px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.footer-list {
    list-style: none;
}

.footer-list li {
    margin-bottom: 16px;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-list strong {
    display: block;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
    font-weight: 600;
}

.footer-list a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-list a:hover {
    color: var(--gold);
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.85rem;
    position: relative;
    z-index: 1;
}

/* Loading state */
.loading {
    text-align: center;
    padding: 60px 40px;
    color: var(--text-light);
    font-weight: 500;
}

.loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: 12px;
    vertical-align: middle;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 60px 40px;
    color: var(--text-light);
    font-weight: 500;
    background: var(--gray-light);
    border-radius: 16px;
    border: 2px dashed var(--gray);
}

/* Smooth reveal animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.event-card {
    animation: fadeInUp 0.5s ease backwards;
}

.event-card:nth-child(1) { animation-delay: 0.1s; }
.event-card:nth-child(2) { animation-delay: 0.2s; }
.event-card:nth-child(3) { animation-delay: 0.3s; }
.event-card:nth-child(4) { animation-delay: 0.4s; }
.event-card:nth-child(5) { animation-delay: 0.5s; }
.event-card:nth-child(6) { animation-delay: 0.6s; }

.sponsor-item {
    animation: fadeInUp 0.5s ease backwards;
}

.sponsor-item:nth-child(1) { animation-delay: 0.1s; }
.sponsor-item:nth-child(2) { animation-delay: 0.15s; }
.sponsor-item:nth-child(3) { animation-delay: 0.2s; }
.sponsor-item:nth-child(4) { animation-delay: 0.25s; }
.sponsor-item:nth-child(5) { animation-delay: 0.3s; }

/* Responsive adjustments */
@media (max-width: 400px) {
    .events-grid {
        grid-template-columns: 1fr;
    }

    .event-card {
        border-radius: 16px;
    }

    .btn {
        padding: 12px 28px;
        font-size: 0.8rem;
    }
}