/**
 * Theme: Cloud Play
 * Architecture: Header & Navigation
 */

.cloud-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--cp-bg-floating);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    box-shadow: var(--cp-shadow-sm);
}

.header-container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--cp-spacing-sm) var(--cp-spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--cp-spacing-lg);
    height: 70px;
    position: relative;
    z-index: 10;
}

/* Brand Logo */
.brand-logo {
    display: flex;
    align-items: center;
    gap: var(--cp-spacing-sm);
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--cp-accent-primary), var(--cp-accent-tertiary));
    border-radius: var(--cp-radius-sm);
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 1.2rem;
    box-shadow: 0 4px 10px var(--cp-accent-primary-glow);
    transform: rotate(-5deg);
    transition: transform var(--cp-transition-bounce);
}

.brand-logo:hover .logo-icon {
    transform: rotate(5deg) scale(1.1);
}

.logo-text {
    font-family: var(--cp-font-display);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--cp-text-main);
    letter-spacing: -0.02em;
}

/* Search Intelligence */
.search-bar {
    flex: 1;
    max-width: 500px;
    position: relative;
    display: flex;
    align-items: center;
    background: var(--cp-bg-base);
    border-radius: var(--cp-radius-pill);
    padding: 0 var(--cp-spacing-md);
    border: 2px solid transparent;
    transition: border-color var(--cp-transition-fast), background var(--cp-transition-fast), box-shadow var(--cp-transition-fast);
}

.search-bar:focus-within {
    border-color: var(--cp-accent-tertiary);
    background: var(--cp-bg-surface);
    box-shadow: 0 0 0 4px rgba(84, 160, 255, 0.15);
}

.search-bar i {
    color: var(--cp-text-muted);
    font-size: 1.1rem;
}

.search-bar input {
    width: 100%;
    background: transparent;
    border: none;
    color: var(--cp-text-main);
    padding: var(--cp-spacing-sm) var(--cp-spacing-md);
    font-family: var(--cp-font-sans);
    font-size: 1rem;
    font-weight: 600;
    outline: none;
}

.search-bar input::placeholder {
    color: var(--cp-text-muted);
    font-weight: 400;
}

/* User Hub */
.user-hub {
    display: flex;
    align-items: center;
    gap: var(--cp-spacing-md);
}

.streak-flame {
    display: flex;
    align-items: center;
    gap: 4px;
    background: rgba(254, 202, 87, 0.15);
    color: #e1b12c;
    padding: 4px 12px;
    border-radius: var(--cp-radius-pill);
    font-weight: 800;
    font-size: 0.9rem;
    cursor: pointer;
    transition: transform var(--cp-transition-bounce);
}

.streak-flame:hover {
    transform: scale(1.05) translateY(-2px);
}

.profile-widget {
    cursor: pointer;
    transition: transform var(--cp-transition-bounce);
}

.profile-widget:hover {
    transform: scale(1.1);
}

.profile-widget .avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--cp-bg-surface);
    box-shadow: var(--cp-shadow-sm);
}

/* Category Navigation (Horizontal Scroll) */
.category-nav-scroll {
    width: 100%;
    background: var(--cp-bg-surface);
    border-top: 1px solid rgba(0, 0, 0, 0.03);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Firefox */
}

.category-nav-scroll::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

.nav-container {
    display: flex;
    gap: var(--cp-spacing-sm);
    padding: var(--cp-spacing-sm) var(--cp-spacing-md);
    max-width: 1400px;
    margin: 0 auto;
    width: max-content;
}

.nav-pill {
    display: flex;
    align-items: center;
    gap: var(--cp-spacing-xs);
    padding: 8px 16px;
    background: var(--cp-bg-base);
    border-radius: var(--cp-radius-pill);
    color: var(--cp-text-muted);
    font-size: 0.95rem;
    font-weight: 700;
    white-space: nowrap;
    transition: background var(--cp-transition-fast), color var(--cp-transition-fast), transform var(--cp-transition-bounce);
}

.nav-pill:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--cp-text-main);
    transform: translateY(-2px);
}

.nav-pill.active {
    background: var(--cp-accent-primary);
    color: white;
    box-shadow: 0 4px 10px var(--cp-accent-primary-glow);
}

/* Mobile Bottom Nav */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 70px;
    background: var(--cp-bg-floating);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    justify-content: space-around;
    align-items: center;
    padding-bottom: env(safe-area-inset-bottom);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.05);
}

.mobile-bottom-nav .nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--cp-text-muted);
    font-size: 0.75rem;
    font-weight: 700;
    transition: color var(--cp-transition-fast), transform var(--cp-transition-bounce);
}

.mobile-bottom-nav .nav-item.active {
    color: var(--cp-accent-primary);
    transform: translateY(-4px);
}

.mobile-bottom-nav .nav-item i {
    font-size: 1.4rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .search-bar { max-width: 300px; }
}

@media (max-width: 768px) {
    .search-bar { display: none; }
    .streak-flame { display: none; }
    .mobile-bottom-nav { display: flex; }
    .cloud-play-main { padding-bottom: 90px; }
    .header-container { height: 60px; }
}