/* ============================================
   iAIFeed Tech Theme - Main Stylesheet
   Tech-inspired dark-glass UI with blue accents
   ============================================ */

/* CSS Variables */
:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #0f1420;
    --bg-card: rgba(20, 27, 45, 0.6);
    --bg-card-hover: rgba(30, 40, 65, 0.8);
    --bg-glass: rgba(15, 20, 35, 0.7);
    --border-color: rgba(56, 97, 156, 0.2);
    --border-hover: rgba(0, 195, 255, 0.4);
    --text-primary: #e8ecf4;
    --text-secondary: #8b95a8;
    --text-muted: #5a6478;
    --accent: #00c3ff;
    --accent-2: #6c5ce7;
    --accent-3: #00d9a6;
    --gradient-primary: linear-gradient(135deg, #00c3ff 0%, #6c5ce7 100%);
    --gradient-hot: linear-gradient(135deg, #ff6b6b 0%, #ee0a3f 100%);
    --gradient-hero: linear-gradient(135deg, #0a0e1a 0%, #0d1525 50%, #0a1020 100%);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(0, 195, 255, 0.15);
    --radius: 12px;
    --radius-lg: 16px;
    --radius-sm: 8px;
    --header-height: 64px;
    --container-max: 1280px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Background ambient effects */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -20%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(0, 195, 255, 0.06) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

body::after {
    content: '';
    position: fixed;
    bottom: -30%;
    right: -10%;
    width: 50%;
    height: 50%;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.05) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

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

a:hover {
    color: var(--accent-3);
}

img {
    max-width: 100%;
    height: auto;
}

/* ==================== Header ==================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.site-header.scrolled {
    background: rgba(10, 14, 26, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.header__inner {
    max-width: var(--container-max);
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header__left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.main-nav {
    flex: 1;
    display: flex;
    justify-content: center;
    overflow: hidden;
}

.main-nav .nav-list {
    display: flex;
    align-items: center;
    gap: 2px;
    list-style: none;
    overflow-x: auto;
    white-space: nowrap;
    padding: 0;
    margin: 0;
    scrollbar-width: none;
}

.main-nav .nav-list::-webkit-scrollbar {
    display: none;
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.site-logo .logo-link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 18px;
}

.site-logo img {
    max-height: 36px;
    max-width: 160px;
    width: auto;
    height: auto;
}

.logo-domain {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
    margin-left: 4px;
    opacity: 0.9;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background: var(--gradient-primary);
    border-radius: 6px;
    color: #fff;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: -0.5px;
    box-shadow: 0 0 8px rgba(0, 195, 255, 0.2);
}

.logo-text {
    background: linear-gradient(135deg, #e8ecf4 0%, #8b95a8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.main-nav .nav-list a {
    display: block;
    padding: 8px 14px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.main-nav .nav-list a:hover,
.main-nav .nav-list .current-menu-item > a,
.main-nav .nav-list .current_page_item > a {
    color: var(--text-primary);
    background: rgba(0, 195, 255, 0.08);
}

.main-nav .nav-list li.has-children {
    position: relative;
}

.main-nav .nav-list li.has-children > a::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 4px;
    vertical-align: middle;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid var(--text-secondary);
    transition: var(--transition);
}

.main-nav .nav-list li.has-children:hover > a::after {
    border-top-color: var(--text-primary);
    transform: rotate(180deg);
}

.main-nav .nav-list .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    display: none;
    min-width: 180px;
    padding: 8px;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    list-style: none;
    z-index: 1001;
}

.main-nav .nav-list li.has-children:hover > .sub-menu {
    display: block;
}

.main-nav .nav-list .sub-menu li {
    margin: 2px 0;
}

.main-nav .nav-list .sub-menu a {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.main-nav .nav-list .sub-menu a:hover {
    background: rgba(0, 195, 255, 0.08);
}

/* Search */
.header__right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.search-wrap {
    position: relative;
}

.search-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.search-toggle:hover {
    background: rgba(0, 195, 255, 0.1);
    border-color: var(--border-hover);
    color: var(--accent);
}

.search-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    display: none;
    align-items: center;
    gap: 8px;
    padding: 12px;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
    width: 360px;
}

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

.search-dropdown input {
    flex: 1;
    padding: 10px 14px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: var(--transition);
}

.search-dropdown input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 195, 255, 0.1);
}

.search-dropdown input::placeholder {
    color: var(--text-muted);
}

.search-submit {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-sm);
    color: #fff;
    cursor: pointer;
    transition: var(--transition);
}

.search-submit:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* Mobile toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}
.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu overlay */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s;
}

.mobile-menu-overlay.active {
    display: block;
    opacity: 1;
}

/* ==================== Layout ==================== */
.site-content {
    position: relative;
    z-index: 1;
    padding-top: var(--header-height);
}

.home-container,
.page-container,
.tool-detail-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 24px;
}

/* ==================== Hero ==================== */
.hero {
    position: relative;
    padding: 80px 24px 60px;
    text-align: center;
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.hero__glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
}

.hero__glow--1 {
    top: 10%;
    left: 15%;
    width: 400px;
    height: 400px;
    background: rgba(0, 195, 255, 0.12);
}

.hero__glow--2 {
    bottom: 0;
    right: 15%;
    width: 350px;
    height: 350px;
    background: rgba(108, 92, 231, 0.1);
}

.hero__grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(56, 97, 156, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(56, 97, 156, 0.05) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 1) 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 1) 0%, transparent 70%);
}

.hero__content {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 0 auto;
}

.hero__title {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 36px;
}

.hero__search {
    display: flex;
    gap: 0;
    max-width: 600px;
    margin: 0 auto 28px;
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.hero__search:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(0, 195, 255, 0.1);
}

.hero__search input {
    flex: 1;
    padding: 16px 20px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
}

.hero__search input::placeholder {
    color: var(--text-muted);
}

.hero__search button {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 28px;
    background: var(--gradient-primary);
    border: none;
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.hero__search button:hover {
    opacity: 0.9;
}

.hero__stats {
    display: flex;
    justify-content: center;
    gap: 32px;
}

.hero__stats span {
    color: var(--text-secondary);
    font-size: 14px;
}

.hero__stats strong {
    color: var(--text-primary);
    font-weight: 700;
}

/* ==================== Sections ==================== */
.section {
    margin-bottom: 48px;
    padding: 0 24px;
}

.section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

.section-icon {
    font-size: 20px;
}

.cat-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(0, 195, 255, 0.08);
    border: 1px solid rgba(0, 195, 255, 0.15);
    border-radius: var(--radius-sm);
    color: var(--accent);
}

.cat-count {
    font-size: 13px;
    font-weight: 400;
    color: var(--text-muted);
    margin-left: 4px;
}

.btn-text {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 14px;
    color: var(--accent);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.btn-text:hover {
    background: rgba(0, 195, 255, 0.08);
    color: var(--accent-3);
}

/* ==================== Tool Cards Grid ==================== */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.tool-card {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.tool-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow), var(--shadow-card);
    color: var(--text-primary);
}

.tool-card:hover::before {
    opacity: 1;
}

.tool-card__icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tool-card__icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.tool-card__default-icon {
    font-size: 20px;
    font-weight: 700;
    color: var(--accent);
}

.tool-card__body {
    flex: 1;
    min-width: 0;
}

.tool-card__title {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
    line-height: 1.4;
}

.tool-card__title a,
.tool-card__title {
    color: var(--text-primary);
}

.tool-card:hover .tool-card__title {
    color: var(--accent);
}

.tool-card__desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.tool-card__arrow {
    flex-shrink: 0;
    color: var(--text-muted);
    opacity: 0;
    transition: var(--transition);
    margin-top: 2px;
}

.tool-card:hover .tool-card__arrow {
    opacity: 1;
    color: var(--accent);
    transform: translate(2px, -2px);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 1px 8px;
    font-size: 11px;
    font-weight: 600;
    line-height: 18px;
    border-radius: 4px;
    background: rgba(0, 195, 255, 0.12);
    color: var(--accent);
    border: 1px solid rgba(0, 195, 255, 0.2);
}

.badge--hot {
    background: rgba(238, 10, 63, 0.12);
    color: #ff6b6b;
    border-color: rgba(238, 10, 63, 0.2);
}

.badge--free {
    background: rgba(0, 217, 166, 0.12);
    color: #00d9a6;
    border-color: rgba(0, 217, 166, 0.2);
}

.badge--freemium {
    background: rgba(255, 193, 7, 0.12);
    color: #ffc107;
    border-color: rgba(255, 193, 7, 0.2);
}

.badge--paid {
    background: rgba(108, 92, 231, 0.12);
    color: #6c5ce7;
    border-color: rgba(108, 92, 231, 0.2);
}

/* Load more */
.section-more {
    text-align: center;
    margin-top: 20px;
}

.btn-load-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-load-more:hover {
    background: rgba(0, 195, 255, 0.08);
    border-color: var(--border-hover);
    color: var(--accent);
}

/* ==================== News Cards ==================== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

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

.news-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.news-card__link {
    display: block;
    color: var(--text-primary);
}

.news-card__image {
    width: 100%;
    height: 160px;
    overflow: hidden;
    background: var(--bg-secondary);
}

.news-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s;
}

.news-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-card);
}

.news-card:hover .news-card__image img {
    transform: scale(1.05);
}

.news-card__body {
    padding: 16px;
}

.news-card__title {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    line-height: 1.4;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.news-card:hover .news-card__title {
    color: var(--accent);
}

.news-card__excerpt {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 10px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.news-card__meta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.news-date {
    font-size: 12px;
    color: var(--text-muted);
}

/* ==================== Page Header ==================== */
.page-container {
    padding-top: 40px;
    padding-bottom: 60px;
}

.page-header {
    margin-bottom: 32px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.page-title {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 8px;
}

.page-description {
    font-size: 15px;
    color: var(--text-secondary);
}

.category-page-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
}

.category-page-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: rgba(0, 195, 255, 0.08);
    border: 1px solid rgba(0, 195, 255, 0.15);
    border-radius: var(--radius);
    color: var(--accent);
}

/* Filter tabs */
.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.filter-tab {
    padding: 8px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-tab:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.filter-tab.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: #fff;
}

/* Subcategory tabs */
.subcategory-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}

.subcat-tab {
    padding: 6px 14px;
    background: rgba(0, 195, 255, 0.06);
    border: 1px solid rgba(0, 195, 255, 0.12);
    border-radius: 20px;
    color: var(--accent);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.subcat-tab:hover {
    background: rgba(0, 195, 255, 0.12);
    border-color: rgba(0, 195, 255, 0.25);
}

.subcat-tab.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: #fff;
}

.subcat-count {
    opacity: 0.7;
    margin-left: 4px;
}

/* ==================== Tool Detail ==================== */
.tool-detail-container {
    padding-top: 32px;
    padding-bottom: 60px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 28px;
}

.breadcrumb a {
    color: var(--text-secondary);
}

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

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

.breadcrumb .current {
    color: var(--text-primary);
}

.tool-detail__header {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: 32px;
}

.tool-detail__icon {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: var(--radius);
    overflow: hidden;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tool-detail__icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.tool-detail__default-icon {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
}

.tool-detail__info {
    flex: 1;
}

.tool-detail__title {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.tool-detail__desc {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.tool-detail__meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.category-tag {
    display: inline-flex;
    padding: 4px 12px;
    background: rgba(0, 195, 255, 0.08);
    border: 1px solid rgba(0, 195, 255, 0.15);
    border-radius: 20px;
    font-size: 12px;
    color: var(--accent);
}

.tool-detail__action {
    flex-shrink: 0;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 28px;
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-sm);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(0, 195, 255, 0.3);
    color: #fff;
}

.tool-detail__content {
    padding: 28px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: 32px;
    line-height: 1.8;
    color: var(--text-secondary);
}

.tool-detail__content h2,
.tool-detail__content h3 {
    color: var(--text-primary);
    margin: 20px 0 12px;
}

.tool-detail__content p {
    margin-bottom: 16px;
}

.tool-detail__content a {
    color: var(--accent);
    text-decoration: underline;
}

.related-tools {
    margin-top: 40px;
}

.related-tools .section-title {
    font-size: 20px;
    margin-bottom: 16px;
}

.related-news {
    margin-top: 40px;
}

.related-news .section-title {
    font-size: 20px;
    margin-bottom: 16px;
}

/* ==================== Footer ==================== */
.site-footer {
    position: relative;
    z-index: 1;
    margin-top: 60px;
    padding: 48px 24px 24px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.footer__inner {
    max-width: var(--container-max);
    margin: 0 auto;
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 32px;
}

.footer__brand {
    max-width: 280px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.footer-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.footer__col h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.footer__col ul {
    list-style: none;
}

.footer__col ul li {
    margin-bottom: 8px;
}

.footer__col ul li a {
    font-size: 14px;
    color: var(--text-secondary);
}

.footer__col ul li a:hover {
    color: var(--accent);
}

.footer-contact {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.contact-link:hover {
    color: var(--accent);
}

.footer-social {
    display: flex;
    gap: 8px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-secondary);
}

.social-link:hover {
    background: rgba(0, 195, 255, 0.08);
    border-color: var(--border-hover);
    color: var(--accent);
}

.footer__bottom {
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer__bottom p {
    font-size: 13px;
    color: var(--text-muted);
}

/* ==================== Pagination ==================== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 4px;
    margin-top: 40px;
}

.pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 14px;
    transition: var(--transition);
}

.pagination .page-numbers:hover {
    border-color: var(--border-hover);
    color: var(--accent);
}

.pagination .page-numbers.current {
    background: var(--gradient-primary);
    border-color: transparent;
    color: #fff;
}

/* ==================== Utility ==================== */
.no-tools,
.no-tools-small,
.no-results {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-muted);
    padding: 32px;
    font-size: 14px;
}

.no-results {
    padding: 48px;
}

.search-results-section {
    padding: 24px;
    margin-bottom: 48px;
}

/* ==================== Animations ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tool-card,
.news-card {
    animation: fadeInUp 0.4s ease-out;
}

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
    .tools-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .news-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .news-grid--full {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 280px;
        height: calc(100vh - var(--header-height));
        background: var(--bg-secondary);
        border-right: 1px solid var(--border-color);
        padding: 24px 16px;
        transform: translateX(-100%);
        transition: transform 0.3s;
        overflow-y: auto;
        z-index: 1000;
    }

    .main-nav.active {
        transform: translateX(0);
    }

    .main-nav .nav-list {
        flex-direction: column;
        align-items: stretch;
        gap: 2px;
    }

    .main-nav .nav-list a {
        padding: 12px 16px;
        border-radius: var(--radius-sm);
    }

    .mobile-toggle {
        display: flex;
    }

    .hero {
        padding: 48px 24px 40px;
    }

    .hero__title {
        font-size: 32px;
    }

    .hero__subtitle {
        font-size: 15px;
    }

    .hero__search {
        flex-direction: column;
        border-radius: var(--radius);
    }

    .hero__search input {
        padding: 14px 16px;
    }

    .hero__search button {
        justify-content: center;
        padding: 14px;
    }

    .hero__stats {
        flex-wrap: wrap;
        gap: 16px;
    }

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

    .news-grid,
    .news-grid--full {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 18px;
    }

    .tool-detail__header {
        flex-direction: column;
        gap: 16px;
        padding: 20px;
    }

    .tool-detail__title {
        font-size: 22px;
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .search-dropdown {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        width: 100%;
        border-radius: 0;
    }

    .page-title {
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .tools-grid {
        grid-template-columns: 1fr;
    }

    .hero__title {
        font-size: 26px;
    }

    .section-head {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}