/* ==========================================================================
   Mobile Navbar Menu Module - 3D Bento Box Style
   ========================================================================== */

/* Base CSS Variables - přizpůsobeno podle designu fotbalového klubu */
:root {
    --font-family-base: 'Roboto Condensed', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition-base: 0.3s ease;
    --border-radius-lg: 24px;
    
    /* Barvy podle aktuálního designu webu */
    --color-background: #000;
    --color-surface: rgba(41, 41, 41, 0.95);
    --color-glass-border: rgba(255, 255, 255, 0.1);
    --color-text-primary: #fff;
    --color-text-secondary: rgba(255, 255, 255, 0.75);
    --color-accent: #c41e3a;
    --color-accent-secondary: #8b1429;
    --shadow-soft: 0 30px 60px -30px rgba(196, 30, 58, 0.35), 0 18px 36px -18px rgba(196, 30, 58, 0.4);
}

/* ==========================================================================
   Navigation Toggle Button
   ========================================================================== */

.nav-toggle {
    display: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border: 1px solid var(--color-glass-border);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    cursor: pointer;
    flex-direction: column;
    gap: 4px;
    position: relative;
    z-index: 1001;
}

.nav-toggle:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-soft);
}

.nav-toggle__line {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text-primary);
    transition: transform 0.4s ease, opacity 0.4s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) {
    opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ==========================================================================
   Navigation List - Desktop
   ========================================================================== */

.nav-list {
    display: flex;
    align-items: center;
    gap: 24px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-list a {
    position: relative;
    font-weight: 500;
    letter-spacing: 0.04em;
    white-space: nowrap;
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color var(--transition-base);
}

.nav-list a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 2px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-secondary));
    opacity: 0;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.35s ease, opacity 0.35s ease;
}

.nav-list a:hover::after,
.nav-list a:focus-visible::after {
    opacity: 1;
    transform: scaleX(1);
    transform-origin: left;
}

/* ==========================================================================
   Navigation List - Mobile (3D Bento Box)
   ========================================================================== */

/* Mobile header - toggle + user btn */
.main-nav__header {
    display: flex;
    align-items: center;
    gap: 12px;
}

@media (max-width: 1024px) {
    .main-nav {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        width: 100%;
        z-index: 1001;
    }
    
    .main-nav__header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 12px;
        padding: 12px 16px;
        width: 100%;
        background: rgba(0, 0, 0, 0.92);
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        backdrop-filter: blur(14px) saturate(160%);
        -webkit-backdrop-filter: blur(14px) saturate(160%);
    }

    .main-nav__brand {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        text-decoration: none;
        min-width: 0;
        flex: 1 1 auto;
    }

    .main-nav__brand-logo {
        width: 32px;
        height: 32px;
        object-fit: contain;
        flex: 0 0 auto;
    }

    .main-nav__brand-text {
        color: var(--color-text-primary);
        font-weight: 700;
        letter-spacing: 0.04em;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .nav-toggle {
        display: inline-flex;
    }
    
    .nav-user-btn--mobile {
        width: 40px;
        height: 40px;
    }

    .nav-list {
        position: fixed;
        inset: 72px 16px auto;
        padding: 32px;
        background: var(--color-surface);
        border: 1px solid var(--color-glass-border);
        border-radius: var(--border-radius-lg);
        box-shadow: var(--shadow-soft);
        flex-direction: column;
        gap: 18px;
        transform: translateY(-24px);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.4s ease, transform 0.4s ease;
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        z-index: 1000;
        max-width: calc(100vw - 48px);
        width: auto;
    }

    .nav-list.is-open {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    .nav-list a {
        display: block;
        padding: 12px 16px;
        border-radius: 12px;
        transition: background-color 0.3s ease, transform 0.3s ease;
        font-size: 16px;
    }

    .nav-list a:hover,
    .nav-list a:focus-visible {
        background-color: rgba(255, 255, 255, 0.05);
        transform: translateX(4px);
    }

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

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}