/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--white);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--content-padding);
    max-width: var(--max-width);
    margin: 0 auto;
}
.header-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}
.header-logo img { height: 32px; }
.header-logo span {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--text-lg);
    color: var(--primary-red);
}
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}
.header-icon {
    position: relative;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    color: var(--gray-600);
    transition: background var(--transition-fast);
}
.header-icon:hover { background: var(--gray-100); }
.header-icon svg { width: 22px; height: 22px; }
.header-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 18px;
    height: 18px;
    background: var(--primary-red);
    color: var(--white);
    font-size: 10px;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--white);
}

/* Top bar */
.top-bar {
    background: var(--primary-blue);
    color: var(--white);
    font-size: var(--text-xs);
    padding: 4px var(--content-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1001;
    height: 28px;
}
.top-bar a { color: var(--white); opacity: 0.9; }
.top-bar a:hover { opacity: 1; }
.top-bar [data-lang] {
    background: rgba(255,255,255,0.15);
    padding: 3px 7px;
    border-radius: 12px;
    font-size: 10px;
    font-weight: 600;
    opacity: 1;
    transition: all 0.15s ease;
    white-space: nowrap;
}
.top-bar [data-lang]:hover { background: rgba(255,255,255,0.3); }
.top-bar [data-lang].active,
.top-bar [data-lang][style*="font-weight:700"] {
    background: var(--white);
    color: var(--primary-blue);
    opacity: 1;
}
@media (max-width: 480px) {
    .top-bar .flex:first-child { display: none; }
    .top-bar { justify-content: center; }
    .top-bar .flex:last-child { gap: 4px !important; }
}

/* ===== Bottom Navigation (Mobile) ===== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-around;
    z-index: 1000;
    padding-bottom: env(safe-area-inset-bottom, 0);
}
.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px 12px;
    font-size: 10px;
    font-weight: 500;
    color: var(--gray-400);
    text-decoration: none;
    transition: color var(--transition-fast);
    position: relative;
}
.bottom-nav-item svg { width: 24px; height: 24px; }
.bottom-nav-item.active { color: var(--primary-red); }
.bottom-nav-item .nav-badge {
    position: absolute;
    top: 0;
    right: 4px;
    width: 16px;
    height: 16px;
    background: var(--primary-red);
    color: var(--white);
    font-size: 9px;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===== Main Content ===== */
.main {
    margin-top: var(--header-height);
    min-height: calc(100vh - var(--header-height) - var(--bottom-nav-height));
}

/* ===== Page Header ===== */
.page-header {
    background: var(--white);
    padding: var(--space-lg) var(--content-padding);
    border-bottom: 1px solid var(--gray-200);
}
.page-header h1 {
    font-size: var(--text-2xl);
}
.page-header .subtitle {
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* ===== Grid System ===== */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

/* ===== Horizontal Scroll ===== */
.h-scroll {
    display: flex;
    gap: var(--space-md);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding: var(--space-xs) 0;
}
.h-scroll::-webkit-scrollbar { display: none; }
.h-scroll > * { scroll-snap-align: start; flex-shrink: 0; }

/* ===== Tabs ===== */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--gray-200);
    overflow-x: auto;
    scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
    padding: 12px 20px;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-muted);
    white-space: nowrap;
    position: relative;
    cursor: pointer;
    transition: color var(--transition-fast);
}
.tab:hover { color: var(--text-dark); }
.tab.active {
    color: var(--primary-red);
    font-weight: 600;
}
.tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-red);
}

/* ===== Desktop Sidebar ===== */
.sidebar {
    display: none;
}

/* ===== Desktop Layout ===== */
@media (min-width: 768px) {
    :root {
        --content-padding: 24px;
    }

    .bottom-nav { display: none; }
    body { padding-bottom: 0; }

    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }

    .desktop-nav {
        display: flex;
        align-items: center;
        gap: var(--space-lg);
    }
    .desktop-nav a {
        font-size: var(--text-sm);
        font-weight: 500;
        color: var(--gray-600);
        transition: color var(--transition-fast);
    }
    .desktop-nav a:hover { color: var(--primary-red); }
}

@media (min-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(3, 1fr); }

    /* Dashboard layout with sidebar */
    .dashboard-layout {
        display: flex;
        min-height: calc(100vh - var(--header-height));
    }
    .sidebar {
        display: flex;
        flex-direction: column;
        width: var(--sidebar-width);
        background: var(--white);
        border-right: 1px solid var(--gray-200);
        padding: var(--space-lg) 0;
        position: sticky;
        top: var(--header-height);
        height: calc(100vh - var(--header-height));
        overflow-y: auto;
    }
    .sidebar-item {
        display: flex;
        align-items: center;
        gap: var(--space-sm);
        padding: 10px var(--space-lg);
        font-size: var(--text-sm);
        font-weight: 500;
        color: var(--gray-600);
        transition: all var(--transition-fast);
        cursor: pointer;
    }
    .sidebar-item:hover { background: var(--gray-50); color: var(--text-dark); }
    .sidebar-item.active {
        background: var(--primary-red-light);
        color: var(--primary-red);
        font-weight: 600;
        border-right: 3px solid var(--primary-red);
    }
    .sidebar-item svg { width: 20px; height: 20px; }
    .dashboard-content {
        flex: 1;
        padding: var(--space-lg);
        overflow-y: auto;
    }
}

/* ===== Stat Cards (Dashboard) ===== */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}
@media (min-width: 768px) {
    .stat-grid { grid-template-columns: repeat(4, 1fr); }
}
.stat-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    box-shadow: var(--shadow-card);
}
.stat-label {
    font-size: var(--text-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-xs);
}
.stat-value {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-dark);
}
.stat-change {
    font-size: var(--text-xs);
    font-weight: 600;
    margin-top: var(--space-xs);
}
.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--error); }