/* layout/HEADER.CSS  */

/* Body Offset */
body {
    padding-top: 68px;
}

/* Header Container */
.header {
    display: flex;
    align-items: center;
    position: fixed;
    top: 20px;
    left: 50%;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(25px);
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-medium);
    transform: translateX(-50%);
    transition: var(--t-interact);
    animation: slideDown var(--dur-slow) var(--ease-ui);
    will-change: transform, background, box-shadow, opacity;
    z-index: var(--z-header);
}

.header::before {
    content: '';
    position: absolute;
    inset:         0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-pill);
    pointer-events: none;
    z-index: -1;
}

/* Header States */
.header.header-hidden {
    opacity: 0;
    transform: translateX(-50%) translateY(-150%);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(30px);
    box-shadow: var(--shadow-hover);
    transform: translateX(-50%) scale(0.95);
}

/* Navigation Container */
.nav-container {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    padding: 9px 13px;
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-pill);
    cursor: pointer;
    isolation: isolate;
    transition: background var(--dur-base) var(--ease-ui), transform var(--dur-base) var(--ease-ui);
    z-index: var(--z-header);
}

.mobile-menu-toggle:hover {
    background: rgba(255, 255, 255, 0.5);
    transform: scale(var(--hover-scale-sm));
}

.mobile-menu-toggle span {
    width: 22px;
    height: 3px;
    margin: 2px 0;
    background: var(--dynamo-red);
    border-radius: var(--radius-sm);
    transform-origin: center center;
    transition: transform var(--dur-fast) var(--ease-ui), opacity var(--dur-fast) var(--ease-ui);
    will-change: transform, opacity;
}

.mobile-menu-toggle.active span:nth-child(1) { transform: rotate(-45deg) translate(-6.5px, 6px); }
.mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.active span:nth-child(3) { transform: rotate(45deg) translate(-6.5px, -6px); }

/* Header Logo */
.header-logo-container {
    display: none;
    align-items: center;
    justify-content: center;
}

.header-logo-link {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.logo-container {
    position: relative;
    width: 40px;
    height: 40px;
}

.header-logo {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 1;
}

/* Navigation Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0;
    padding: 6px;
    list-style: none;
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(15px);
    border-radius: var(--radius-pill);
}

.nav-link {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    min-height: 44px;
    padding: 5px 13px;
    background: white;
    color: var(--dark-gray);
    font-weight: 600;
    font-size: var(--text-body);
    letter-spacing: 1px;
    text-decoration: none;
    border-radius: var(--radius-pill);
    overflow: hidden;
    cursor: pointer;
    transition: var(--t-interact);
    will-change: transform, color, background-color, border-color;
    z-index: 1;
}

.nav-link i {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 28px;
    font-size: 1.5em;
    line-height: 1;
}

.nav-link span.nav-text {
    margin-left: 8px;
}

.nav-link:hover,
.nav-link:focus,
.nav-link.active {
    background: var(--dynamo-red);
    color: var(--off-white);
    border-color: var(--dynamo-red);
}

.nav-link:focus {
    outline: none;
}

.nav-link.search-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 8px 12px;
}

/* Mobile Search */
.mobile-search-container {
    display: none;
}

.mobile-search-link {
    display: flex;
    align-items: center;
    padding: 8px 10px;
    background: rgba(255, 255, 255, 0.3);
    color: var(--dark-gray);
    text-decoration: none;
    backdrop-filter: blur(10px);
    border-radius: var(--radius-pill);
    transition: background var(--dur-base) var(--ease-ui), transform var(--dur-base) var(--ease-ui);
}

.mobile-search-link:hover {
    background: rgba(255, 255, 255, 0.5);
    transform: scale(var(--hover-scale-sm));
}

.mobile-search-link i {
    font-size: 1.5rem;
}

/* Scroll Progress Bar */
.scroll-progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 12px;
    background: rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(10px);
    z-index: var(--z-header);
}

.scroll-progress-bar {
    position: relative;
    width: 0;
    height: 100%;
    background: var(--dynamo-red);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    box-shadow: var(--shadow-medium);
    transition: width var(--dur-fast) var(--ease-out);
    will-change: width;
}

.scroll-progress-bar::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 0;
    width: 13px;
    height: 13px;
    background-image: url('../../img/icons/white-football-icon.png');
    background-size: contain;
    background-repeat: no-repeat;
    transform: translateY(-50%);
    z-index: 1;
}

/* Animations */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-100%);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* Desktop View (> 481px) */
@media (min-width: 481px) {
    .header-logo-container { display: none; }
    .nav-link i { display: inline-block; }
    .nav-link span.nav-text { display: none; }
    .nav-link.search-link { padding: 8px 12px; }
}

/* Responsive: Tablet */
@media (max-width: 1024px) {
    .header {
        top: 15px;
        width: 90%;
        padding: 7px 11px;
    }

    .nav-container {
        padding: 0;
    }

    .mobile-menu-toggle {
        display: flex;
        padding: 7px 11px;
    }

    .nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: calc(100% + 10px);
        left: 0;
        right: auto;
        min-width: 185px;
        max-height: 0;
        padding: 8px;
        gap: 8px;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(25px);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-hover);
        overflow: hidden;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: transform var(--dur-fast) var(--ease-ui), opacity var(--dur-fast) var(--ease-ui), visibility var(--dur-fast) var(--ease-ui), max-height var(--dur-fast) var(--ease-ui);
        transform: translateY(-20px);
    }

    .nav-links.active {
        opacity: 1;
        visibility: visible;
        max-height: 500px;
        pointer-events: auto;
        transform: translateY(0);
    }

    .nav-link {
        width: 100%;
        padding: 0 16px;
        justify-content: center;
    }

    .nav-link:hover,
    .nav-link:focus {
        background: transparent;
        color: var(--dark-gray);
    }

    .nav-link.active {
        background: var(--dynamo-red);
    }

    .nav-link.search-link,
    .nav-link i {
        display: none;
    }

    .nav-link span.nav-text {
        margin-left: 0;
    }
}

/* Responsive: Mobile */
@media (max-width: 480px) {
    body {
        padding-top: 60px;
    }

    .header {
        display: flex;
        align-items: center;
        top: 8px;
        width: 86%;
        padding: 6px 8px;
        background: rgba(255, 255, 255, 0.92);
        backdrop-filter: blur(20px);
        box-shadow: var(--shadow-hover);
    }

    .scroll-progress-container {
        display: none;
    }

    .nav-container {
        align-items: center;
        justify-content: space-between;
        width: 100%;
    }

    .mobile-menu-toggle {
        padding: 5px 8px;
        order: 1;
    }

    .mobile-menu-toggle span {
        height: 3px;
        margin: 3px 0;
    }

    .mobile-menu-toggle.active span:nth-child(1) { transform: rotate(-45deg) translate(-6.5px, 6.3px); }
    .mobile-menu-toggle.active span:nth-child(3) { transform: rotate(45deg) translate(-6.5px, -6.3px); }

    .header-logo-container {
        display: flex;
        position: absolute;
        left: 50%;
        order: 2;
        transform: translateX(-50%);
    }

    .mobile-search-container {
        display: flex;
        order: 3;
    }

    .mobile-search-link i {
        color: var(--dynamo-red);
    }

    .nav-links {
        top: calc(100% + 7px);
        left: -8px;
        right: auto;
        padding: 8px;
        gap: 4px;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(30px);
        border: 1px solid rgba(255, 255, 255, 0.5);
        order: 4;
    }

    .nav-link {
        justify-content: flex-start;
        padding: 0 12px;
        background: transparent;
        font-weight: 700;
    }

    .nav-link.active {
        background: var(--dynamo-red);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }

    .header,
    .nav-link,
    .scroll-progress-bar,
    .mobile-menu-toggle span,
    .nav-links {
        transition: none;
        animation: none;
    }
}