/* iLoveTool4 Core Stylesheet - Obsidian & Crimson Luxury Dark Theme */
:root {
    --bg-primary: #090a0f;
    --bg-surface: #11141c;
    --bg-card: #161a25;
    --bg-card-hover: #1c2230;
    --border-subtle: #232838;
    --border-focus: #ff1e42;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --crimson: #ff1e42;
    --crimson-hover: #e01234;
    --crimson-glow: rgba(255, 30, 66, 0.22);
    --crimson-soft: rgba(255, 30, 66, 0.1);
    --emerald: #10b981;
    --emerald-glow: rgba(16, 185, 129, 0.2);
    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", -apple-system, sans-serif;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-crimson: 0 4px 24px var(--crimson-glow);
    --transition-fast: 0.15s ease;
    --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-stack);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body.site-body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: radial-gradient(circle at 50% 0%, rgba(255, 30, 66, 0.05) 0%, transparent 60%), var(--bg-primary);
    overflow-x: hidden;
}

.site-container {
    width: 100%;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 1.25rem;
}

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

a:hover {
    color: var(--crimson);
}

.text-crimson {
    color: var(--crimson);
}

/* Header & Navigation */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(9, 10, 15, 0.85);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    line-height: 0;
    flex-shrink: 0;
}

/* Fluid image logo - scales with viewport, never fixed, never overflows */
.brand-logo-img {
    display: block;
    height: clamp(26px, 2.2vw + 18px, 40px);
    width: auto;
    max-width: min(60vw, 260px);
    object-fit: contain;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.brand-logo:hover .brand-logo-img {
    opacity: 0.85;
    transform: translateY(-1px);
}

.footer-logo-img {
    height: clamp(24px, 1.8vw + 16px, 36px);
    max-width: min(70vw, 240px);
}

.logo-icon-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: linear-gradient(135deg, var(--crimson), #99001b);
    color: #fff;
    box-shadow: 0 0 15px var(--crimson-glow);
}

.desktop-nav .nav-list {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    list-style: none;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 0.5rem 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.nav-link:hover, .nav-link.active {
    color: #fff;
}

.nav-dropdown-item {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 220px;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 0.5rem;
    box-shadow: var(--shadow-card);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-smooth);
    z-index: 105;
}

.nav-dropdown-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0.8rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.dropdown-link:hover {
    background: var(--bg-card);
    color: #fff;
}

.cat-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--crimson);
    margin-right: 0.5rem;
}

.cat-badge {
    font-size: 0.75rem;
    padding: 2px 7px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.search-trigger-btn {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    padding: 0.45rem 0.85rem;
    border-radius: 24px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.search-trigger-btn:hover {
    border-color: var(--crimson);
    color: var(--text-secondary);
}

.search-kbd {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 0.7rem;
    color: var(--text-muted);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.ham-bar {
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: transform var(--transition-fast);
}

/* Mobile Drawer */
.mobile-drawer {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    padding: 1.25rem;
    z-index: 99;
}

.mobile-drawer.open {
    display: block;
}

.mobile-search-box input {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    color: #fff;
    margin-bottom: 1rem;
}

.drawer-heading {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--crimson);
    margin: 1rem 0 0.5rem;
    font-weight: 700;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.65rem 0;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

/* Search Modal */
.search-modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding-top: 10vh;
}

.search-modal.active {
    display: flex;
}

.search-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
}

.search-modal-panel {
    position: relative;
    width: 100%;
    max-width: 620px;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8), var(--shadow-crimson);
    overflow: hidden;
    z-index: 201;
}

.search-input-wrap {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-subtle);
}

.search-input-wrap input {
    flex: 1;
    background: transparent;
    border: none;
    color: #fff;
    font-size: 1.1rem;
    outline: none;
}

.search-close-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
}

.search-results-list {
    max-height: 380px;
    overflow-y: auto;
    padding: 0.5rem;
}

.search-result-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    transition: background var(--transition-fast);
}

.search-result-item:hover, .search-result-item.highlighted {
    background: var(--bg-card);
}

.search-item-cat {
    font-size: 0.75rem;
    color: var(--crimson);
    text-transform: uppercase;
    font-weight: 600;
}

.search-modal-footer {
    display: flex;
    gap: 1.25rem;
    padding: 0.6rem 1.25rem;
    background: var(--bg-primary);
    border-top: 1px solid var(--border-subtle);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Breadcrumbs */
.breadcrumb-nav {
    padding: 1rem 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
}

.breadcrumb-item a {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--text-secondary);
}

.breadcrumb-item a:hover {
    color: var(--crimson);
}

.breadcrumb-item.active {
    color: var(--text-muted);
}

.breadcrumb-separator {
    display: flex;
    align-items: center;
    color: var(--text-muted);
    opacity: 0.5;
}

/* Main Site Content */
.site-main {
    flex: 1;
}

/* AdSense Slot Wrappers (0 CLS Guaranteed) */
.ad-container-outer {
    width: 100%;
    margin: 2rem 0;
    background: rgba(255, 255, 255, 0.015);
    border: 1px dashed rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.ad-label-bar {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    text-align: center;
    padding: 4px;
    background: rgba(0, 0, 0, 0.3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.ad-slot-box {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.ad-placeholder-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Footer */
.site-footer {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-subtle);
    margin-top: 5rem;
    padding: 4.5rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 3rem;
    margin-bottom: 3.5rem;
}

.footer-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 1rem 0 1.5rem;
    max-width: 380px;
}

.author-attribution {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.author-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    padding: 0.3rem 0.75rem;
    border-radius: 20px;
    color: #fff;
    font-weight: 500;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--emerald);
    box-shadow: 0 0 8px var(--emerald-glow);
}

.footer-heading {
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer-nav {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-nav a {
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--border-subtle);
    padding-top: 2rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-tech-meta {
    display: flex;
    gap: 0.5rem;
}

.badge-tech {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.back-to-top {
    position: fixed;
    bottom: 25px;
    right: 25px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-card);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-smooth);
    z-index: 90;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--crimson);
    border-color: var(--crimson);
    color: #fff;
    transform: translateY(-3px);
}

/* Responsive Media Queries */
@media (max-width: 992px) {
    .desktop-nav { display: none; }
    .mobile-menu-toggle { display: flex; }
    .search-btn-label, .search-kbd { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 640px) {
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
    .header-inner { height: 60px; }
}

/* Very small phones - keep the logo legible without crowding the hamburger */
@media (max-width: 380px) {
    .brand-logo-img { height: 24px; max-width: 52vw; }
}

/* Respect reduced-motion preferences on the logo hover */
@media (prefers-reduced-motion: reduce) {
    .brand-logo-img, .brand-logo:hover .brand-logo-img { transition: none; transform: none; }
}