/* ==========================================================================
   SPOKO Theme - Main Stylesheet
   Společná Kouřim - Pro spokojenou budoucnost
   ========================================================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
    --color-primary: #0a74b9;
    --color-primary-dark: #065a91;
    --color-primary-light: #3d9fd8;
    --color-accent: #4ecdc4;
    --color-gradient-start: #5cc8c0;
    --color-gradient-mid: #2a98c4;
    --color-gradient-end: #0a5a8a;
    --color-white: #ffffff;
    --color-text: #1a2a3a;
    --color-text-light: #5a6a7a;
    --color-bg: #f8fafb;
    --color-bg-alt: #eef3f7;
    --color-border: #dde5ec;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;

    --header-height: 72px;
    --container-width: 1200px;
    --section-padding: 100px;
    --border-radius: 12px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
    color: var(--color-primary-dark);
}

ul {
    list-style: none;
}

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

/* ---------- Header ---------- */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    background: rgba(10, 116, 185, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: background var(--transition), box-shadow var(--transition);
}

.site-header.scrolled {
    background: rgba(6, 70, 112, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

.header-inner {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--color-white);
}

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

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-subtitle {
    font-size: var(--font-size-xs);
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    opacity: 0.85;
}

.logo-title {
    font-size: var(--font-size-2xl);
    font-weight: 900;
    letter-spacing: 0.05em;
}

/* Navigation */
.main-navigation {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-link {
    display: inline-block;
    padding: 8px 16px;
    color: rgba(255, 255, 255, 0.85);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: 6px;
    transition: all var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.15);
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    position: relative;
    transition: background var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    left: 0;
    transition: transform var(--transition);
}

.hamburger::before {
    top: -7px;
}

.hamburger::after {
    bottom: -7px;
}

.menu-toggle[aria-expanded="true"] .hamburger {
    background: transparent;
}

.menu-toggle[aria-expanded="true"] .hamburger::before {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .hamburger::after {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero Section ---------- */
.section--hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(180deg, var(--color-gradient-start) 0%, var(--color-gradient-mid) 40%, var(--color-gradient-end) 100%);
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(10, 90, 138, 0.3) 0%,
        rgba(10, 90, 138, 0.1) 30%,
        rgba(10, 90, 138, 0.4) 70%,
        rgba(10, 90, 138, 0.8) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--color-white);
    padding: 0 24px;
    margin-top: 25vh;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 12px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: var(--font-size-sm);
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    opacity: 0.9;
    margin-bottom: 4px;
}

.hero-logo {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: 900;
    letter-spacing: 0.08em;
    margin-bottom: 32px;
}

.hero-cta {
    display: inline-block;
    padding: 14px 36px;
    background: var(--color-white);
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--font-size-base);
    border-radius: 50px;
    transition: all var(--transition);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.hero-cta:hover {
    background: var(--color-white);
    color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.2);
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-indicator span {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator span::after {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 2px;
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(12px); opacity: 0.3; }
}

/* ---------- Section Common ---------- */
.section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-text);
    margin-bottom: 16px;
}

.section-divider {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    border-radius: 2px;
    margin: 0 auto 16px;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ---------- About Section ---------- */
.section--about {
    background: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.about-text .lead {
    font-size: var(--font-size-xl);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 20px;
    line-height: 1.5;
}

.about-text p {
    color: var(--color-text-light);
    margin-bottom: 16px;
    line-height: 1.7;
}

.about-image img {
    border-radius: var(--border-radius);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.about-values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.value-card {
    text-align: center;
    padding: 40px 24px;
    border-radius: var(--border-radius);
    background: var(--color-bg);
    transition: transform var(--transition), box-shadow var(--transition);
}

.value-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.value-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: var(--color-white);
    margin-bottom: 20px;
}

.value-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.value-card p {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

/* ---------- Program Section ---------- */
.section--program {
    background: var(--color-bg);
}

.program-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.program-card {
    background: var(--color-white);
    padding: 40px 32px;
    border-radius: var(--border-radius);
    transition: transform var(--transition), box-shadow var(--transition);
    border: 1px solid var(--color-border);
}

.program-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    border-color: var(--color-primary-light);
}

.program-number {
    font-size: var(--font-size-4xl);
    font-weight: 900;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    line-height: 1;
}

.program-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text);
}

.program-card p {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

/* ---------- Team Section ---------- */
.section--team {
    background: var(--color-white);
}

.team-hero {
    margin-bottom: 40px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.team-hero img {
    width: 100%;
    height: auto;
}

.team-cta {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
}

.team-cta p {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    margin-bottom: 24px;
    line-height: 1.7;
}

/* ---------- CTA Section ---------- */
.section--cta {
    background: linear-gradient(135deg, var(--color-gradient-start) 0%, var(--color-gradient-mid) 50%, var(--color-gradient-end) 100%);
    color: var(--color-white);
    text-align: center;
    padding: 80px 0;
}

.cta-content h2 {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-content p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: 32px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: 50px;
    transition: all var(--transition);
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn--primary {
    background: var(--color-primary);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(10, 116, 185, 0.3);
}

.btn--primary:hover {
    background: var(--color-primary-dark);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(10, 116, 185, 0.4);
}

.btn--white {
    background: var(--color-white);
    color: var(--color-primary);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.btn--white:hover {
    color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

/* ---------- Footer ---------- */
.site-footer {
    background: var(--color-text);
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo-subtitle {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
}

.footer-logo-title {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 900;
    color: var(--color-white);
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.footer-slogan {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
}

.footer-contact h3,
.footer-nav h3 {
    color: var(--color-white);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}

.footer-contact li,
.footer-nav li {
    margin-bottom: 8px;
    font-size: var(--font-size-sm);
}

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

.footer-contact a:hover,
.footer-nav a:hover {
    color: var(--color-white);
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.4);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px;
    }

    .about-grid {
        gap: 40px;
    }

    .program-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
        --header-height: 64px;
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-logo {
        font-size: var(--font-size-3xl);
    }

    .hero-content {
        margin-top: 30vh;
    }

    /* Mobile menu */
    .menu-toggle {
        display: block;
    }

    .main-navigation {
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        background: rgba(6, 70, 112, 0.98);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        padding: 100px 32px 32px;
        transform: translateX(100%);
        transition: transform var(--transition);
        box-shadow: -4px 0 30px rgba(0, 0, 0, 0.2);
    }

    .main-navigation.is-open {
        transform: translateX(0);
    }

    .nav-menu {
        flex-direction: column;
        gap: 4px;
    }

    .nav-link {
        display: block;
        padding: 12px 16px;
        font-size: var(--font-size-base);
    }

    /* About */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .about-values {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .value-card {
        padding: 32px 24px;
    }

    /* Program */
    .program-grid {
        grid-template-columns: 1fr;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .hero-logo {
        font-size: var(--font-size-2xl);
    }

    .program-card {
        padding: 28px 20px;
    }
}