/* ============================================
   FreeTools - Main Stylesheet
   Modern, Premium, Clean Design
   ============================================ */

/* Design Tokens */
:root {
    --bg-main: #f8fafc;
    --card-bg: #ffffff;
    --border-subtle: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --brand-primary: #4f46e5;
    --brand-glow: rgba(99, 102, 241, 0.15);
    --shadow-card: 0 1px 3px 0 rgba(0,0,0,.04), 0 1px 2px -1px rgba(0,0,0,.04);
    --shadow-card-hover: 0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -4px rgba(0,0,0,.08);
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
}

[data-theme="dark"] {
    --bg-main: #090d16;
    --card-bg: #111827;
    --border-subtle: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --brand-primary: #6366f1;
    --brand-glow: rgba(99, 102, 241, 0.25);
    --shadow-card: 0 1px 3px 0 rgba(0,0,0,.2), 0 1px 2px -1px rgba(0,0,0,.2);
    --shadow-card-hover: 0 10px 15px -3px rgba(0,0,0,.3), 0 4px 6px -4px rgba(0,0,0,.3);
}

/* Base Reset */
*, *::before, *::after { box-sizing: border-box; }

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

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', sans-serif;
    font-size: 14px;
    line-height: 1.6;
    background-color: var(--bg-main);
    color: var(--text-primary);
    transition: background-color 0.2s, color 0.2s;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main { flex: 1; }

a { color: inherit; text-decoration: none; }
a:hover { color: var(--brand-primary); }

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 9999px; }
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: #334155; }
::-webkit-scrollbar-thumb:hover { background: #94a3b8; }

/* ============================================
   HEADER
   ============================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226,232,240,0.8);
    transition: background 0.2s, border-color 0.2s;
}

[data-theme="dark"] .site-header {
    background: rgba(15,23,42,0.9);
    border-bottom-color: rgba(30,41,59,0.8);
}

.header-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.25rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 1.25rem;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    text-decoration: none;
}

.logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, #4338ca 0%, #6366f1 50%, #8b5cf6 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.2s, box-shadow 0.2s;
    flex-shrink: 0;
}

.logo-link:hover .logo-icon {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.logo-img {
    width: 36px;
    height: 36px;
    object-fit: contain;
    border-radius: 8px;
    flex-shrink: 0;
    transition: transform 0.2s;
}

.footer-logo-img {
    width: 32px;
    height: 32px;
    object-fit: contain;
    border-radius: 6px;
    flex-shrink: 0;
    transition: transform 0.2s;
}

[data-theme="dark"] .logo-img,
[data-theme="dark"] .footer-logo-img {
    filter: brightness(1.1);
}

.logo-link:hover .logo-img,
.logo-link:hover .footer-logo-img {
    transform: scale(1.05);
}

.logo-text { display: flex; flex-direction: column; line-height: 1.1; }

.logo-name {
    font-weight: 800;
    font-size: 21px;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    display: flex;
    align-items: baseline;
}

.logo-name-accent {
    background: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 900;
}

[data-theme="dark"] .logo-name-accent {
    background: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #f472b6 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-name .dot {
    color: #ec4899;
    font-weight: 900;
    margin-left: 1px;
}

.logo-sub {
    font-size: 9.5px;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #6366f1;
    margin-top: 1px;
}

[data-theme="dark"] .logo-sub {
    color: #a5b4fc;
}

.header-search-btn {
    display: none;
    align-items: center;
    gap: 0.75rem;
    padding: 6px 12px;
    border-radius: 10px;
    background: rgba(241,245,249,0.8);
    border: 1px solid rgba(226,232,240,0.8);
    color: var(--text-muted);
    font-size: 12px;
    cursor: pointer;
    transition: border-color 0.2s;
    width: 200px;
}

[data-theme="dark"] .header-search-btn {
    background: rgba(30,41,59,0.8);
    border-color: rgba(51,65,85,0.8);
}

.header-search-btn:hover { border-color: var(--brand-primary); }
.header-search-btn kbd {
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 2px 6px;
    border-radius: 4px;
    background: white;
    border: 1px solid var(--border-subtle);
    font-size: 10px;
    font-family: monospace;
    color: var(--text-muted);
    margin-left: auto;
}

[data-theme="dark"] .header-search-btn kbd {
    background: #1e293b;
}

@media (min-width: 640px) { .header-search-btn { display: flex; } }

.header-nav { display: none; align-items: center; gap: 1.25rem; }
@media (min-width: 1024px) { .header-nav { display: flex; } }

.header-nav a {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.15s;
    white-space: nowrap;
}

.header-nav a:hover { color: var(--brand-primary); }

.header-actions { display: flex; align-items: center; gap: 0.5rem; }

.theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1px solid var(--border-subtle);
    background: var(--card-bg);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.theme-toggle:hover {
    background: #f1f5f9;
    color: var(--brand-primary);
}

[data-theme="dark"] .theme-toggle:hover {
    background: #1e293b;
}

.mobile-menu-btn {
    display: flex;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s;
}

.mobile-menu-btn:hover { background: #f1f5f9; }
[data-theme="dark"] .mobile-menu-btn:hover { background: #1e293b; }
@media (min-width: 1024px) { .mobile-menu-btn { display: none; } }

.mobile-menu {
    display: none;
    border-top: 1px solid var(--border-subtle);
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    padding: 12px 16px 20px;
}

[data-theme="dark"] .mobile-menu {
    background: rgba(15,23,42,0.95);
}

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

.mobile-menu-label {
    padding: 4px 8px;
    font-size: 10px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.15s;
}

.mobile-nav-link:hover {
    background: rgba(99,102,241,0.05);
    color: var(--brand-primary);
}

.mobile-nav-link svg { color: var(--text-muted); }

.mobile-footer-links {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 12px 0;
    margin-top: 8px;
    border-top: 1px solid var(--border-subtle);
    font-size: 12px;
    color: var(--text-muted);
}

.mobile-footer-links a:hover { color: var(--brand-primary); }

/* ============================================
   COMMAND PALETTE / SEARCH MODAL
   ============================================ */
.palette-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    z-index: 50;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 10vh;
    animation: fadeIn 0.15s ease;
}

.palette-box {
    background: var(--card-bg);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25);
    width: 100%;
    max-width: 600px;
    margin: 0 16px;
    overflow: hidden;
    animation: slideDown 0.15s ease;
}

.palette-search {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border-bottom: 1px solid var(--border-subtle);
}

.palette-search input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 16px;
    color: var(--text-primary);
    font-weight: 500;
}

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

.palette-results {
    max-height: 400px;
    overflow-y: auto;
    padding: 8px;
}

.palette-result-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 10px;
    cursor: pointer;
    text-decoration: none;
    color: var(--text-primary);
    transition: background 0.1s;
}

.palette-result-item:hover, .palette-result-item.active {
    background: rgba(99,102,241,0.06);
    color: var(--brand-primary);
}

.palette-result-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: rgba(99,102,241,0.08);
    color: var(--brand-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.palette-result-name { font-size: 14px; font-weight: 500; }
.palette-result-category { font-size: 11px; color: var(--text-muted); }

.palette-empty {
    padding: 32px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero-section {
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, rgba(238,242,255,0.7) 0%, rgba(255,255,255,1) 60%, var(--bg-main) 100%);
    padding: 48px 16px 64px;
    text-align: center;
}

[data-theme="dark"] .hero-section {
    background: linear-gradient(180deg, rgba(30,27,75,0.3) 0%, rgba(9,13,22,0.8) 60%, var(--bg-main) 100%);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 12px;
    border-radius: 9999px;
    background: rgba(238,242,255,0.9);
    border: 1px solid rgba(199,210,254,0.6);
    font-size: 11px;
    font-weight: 700;
    color: #4338ca;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    margin-bottom: 24px;
}

[data-theme="dark"] .hero-badge {
    background: rgba(30,27,75,0.7);
    border-color: rgba(67,56,202,0.4);
    color: #a5b4fc;
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #10b981;
    animation: pulse 2s infinite;
}

.hero-title {
    font-size: clamp(28px, 5vw, 56px);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    margin: 0 0 16px;
}

.hero-title .gradient-text {
    background: linear-gradient(135deg, #4f46e5, #7c3aed, #4f46e5);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-sub {
    font-size: clamp(14px, 2vw, 18px);
    color: var(--text-muted);
    max-width: 560px;
    margin: 0 auto 32px;
    line-height: 1.7;
}

.hero-search {
    max-width: 560px;
    margin: 0 auto;
    position: relative;
}

.hero-search-input {
    width: 100%;
    padding: 14px 20px 14px 48px;
    border-radius: 14px;
    border: 1.5px solid var(--border-subtle);
    background: var(--card-bg);
    font-size: 15px;
    color: var(--text-primary);
    outline: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.hero-search-input:focus {
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.12), 0 4px 12px rgba(0,0,0,0.05);
}

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

.hero-search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

/* ============================================
   CATEGORY FILTERS
   ============================================ */
.category-filters {
    display: flex;
    align-items: center;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 8px;
    margin-bottom: 32px;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.category-filters::-webkit-scrollbar { display: none; }

.filter-pill {
    padding: 8px 16px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    cursor: pointer;
    border: 1px solid var(--border-subtle);
    background: var(--card-bg);
    color: var(--text-secondary);
    transition: all 0.2s;
    text-decoration: none;
}

.filter-pill:hover {
    border-color: var(--brand-primary);
    color: var(--brand-primary);
}

.filter-pill.active {
    background: var(--brand-primary);
    color: white;
    border-color: var(--brand-primary);
    box-shadow: 0 4px 12px rgba(99,102,241,0.25);
}

/* ============================================
   TOOL CARDS GRID
   ============================================ */
.tools-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

@media (min-width: 640px) { .tools-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .tools-grid { grid-template-columns: repeat(3, 1fr); } }

.tool-card {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 24px;
    background: var(--card-bg);
    border: 1px solid rgba(226,232,240,0.9);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    text-decoration: none;
    color: inherit;
    overflow: hidden;
    transition: all 0.3s;
}

[data-theme="dark"] .tool-card {
    border-color: rgba(30,41,59,0.9);
    background: rgba(15,23,42,0.9);
}

.tool-card:hover {
    border-color: rgba(99,102,241,0.5);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
}

.tool-card-glow {
    position: absolute;
    top: -3rem;
    right: -3rem;
    width: 8rem;
    height: 8rem;
    border-radius: 50%;
    background: rgba(99,102,241,0.05);
    filter: blur(24px);
    pointer-events: none;
    transition: transform 0.5s;
}

.tool-card:hover .tool-card-glow { transform: scale(1.5); }

.tool-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 16px;
}

.tool-card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(238,242,255,0.8), rgba(224,231,255,0.6));
    border: 1px solid rgba(199,210,254,0.4);
    color: var(--brand-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    flex-shrink: 0;
}

[data-theme="dark"] .tool-card-icon {
    background: linear-gradient(135deg, rgba(30,27,75,0.6), rgba(49,46,129,0.4));
    border-color: rgba(67,56,202,0.4);
    color: #a5b4fc;
}

.tool-card:hover .tool-card-icon {
    transform: scale(1.05);
    border-color: rgba(99,102,241,0.6);
}

.tool-card-badges { display: flex; align-items: center; gap: 6px; }

.tool-badge {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 3px 10px;
    border-radius: 9999px;
    background: rgba(238,242,255,0.9);
    color: var(--brand-primary);
    border: 1px solid rgba(199,210,254,0.5);
}

[data-theme="dark"] .tool-badge {
    background: rgba(30,27,75,0.6);
    border-color: rgba(67,56,202,0.5);
    color: #a5b4fc;
}

.tool-card-arrow {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: all 0.2s;
}

.tool-card:hover .tool-card-arrow {
    color: var(--brand-primary);
    transform: translate(2px, -2px);
}

.tool-card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 6px;
    letter-spacing: -0.01em;
    transition: color 0.2s;
}

.tool-card:hover .tool-card-title { color: var(--brand-primary); }

.tool-card-desc {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.tool-card-footer {
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid rgba(241,245,249,0.9);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
}

[data-theme="dark"] .tool-card-footer { border-top-color: rgba(30,41,59,0.6); }

.tool-card-footer .open-label {
    color: var(--brand-primary);
    opacity: 0;
    transition: opacity 0.2s;
}

.tool-card:hover .tool-card-footer .open-label { opacity: 1; }

/* ============================================
   TRUST / BENTO SECTION
   ============================================ */
.trust-section { margin-top: 80px; }

.section-heading { text-align: center; margin-bottom: 40px; }

.section-heading h2 {
    font-size: clamp(20px, 3vw, 28px);
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: -0.025em;
    margin: 0 0 8px;
}

.section-heading p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 0;
}

.trust-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 640px) { .trust-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .trust-grid { grid-template-columns: repeat(4, 1fr); } }

.trust-card {
    padding: 20px;
    background: var(--card-bg);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
}

.trust-card h3 { font-size: 14px; font-weight: 700; color: var(--text-primary); margin: 0 0 6px; }
.trust-card p { font-size: 12px; color: var(--text-muted); margin: 0; line-height: 1.6; }

/* ============================================
   FAQ SECTION
   ============================================ */
.faq-section { margin-top: 64px; }

.faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 720px; margin: 0 auto; }

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    overflow: hidden;
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    gap: 12px;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.faq-question:hover { color: var(--brand-primary); }

.faq-answer {
    padding: 0 20px;
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.7;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer.open {
    max-height: 300px;
    padding: 0 20px 16px;
}

/* ============================================
   EMPTY STATE
   ============================================ */
.empty-state {
    text-align: center;
    padding: 64px 32px;
    background: var(--card-bg);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
}

.empty-state h3 { font-size: 16px; font-weight: 600; color: var(--text-primary); margin: 0 0 8px; }
.empty-state p { font-size: 13px; color: var(--text-muted); margin: 0; }

/* ============================================
   CONTAINER
   ============================================ */
.container-main {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 16px;
}

@media (min-width: 640px) { .container-main { padding: 0 24px; } }
@media (min-width: 1024px) { .container-main { padding: 0 32px; } }

/* ============================================
   TOOL PAGE LAYOUT
   ============================================ */
.tool-page {
    max-width: 1280px;
    margin: 0 auto;
    padding: 24px 16px 48px;
}

@media (min-width: 640px) { .tool-page { padding: 32px 24px 64px; } }
@media (min-width: 1024px) { .tool-page { padding: 40px 32px 80px; } }

.tool-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 24px;
}

.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
}

.breadcrumb-nav a { text-decoration: none; color: inherit; transition: color 0.15s; }
.breadcrumb-nav a:hover { color: var(--brand-primary); }
.breadcrumb-nav .sep { color: var(--border-subtle); }

.breadcrumb-badges { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }

.trust-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 500;
    color: #4338ca;
    background: rgba(238,242,255,0.9);
    padding: 5px 12px;
    border-radius: 9999px;
    border: 1px solid rgba(199,210,254,0.5);
}

[data-theme="dark"] .trust-badge {
    color: #a5b4fc;
    background: rgba(30,27,75,0.6);
    border-color: rgba(67,56,202,0.4);
}

.tool-header { margin-bottom: 32px; }

.tool-header h1 {
    font-size: clamp(22px, 3vw, 32px);
    font-weight: 900;
    color: var(--text-primary);
    margin: 0 0 8px;
    letter-spacing: -0.02em;
}

.tool-header p {
    font-size: 14px;
    color: var(--text-muted);
    margin: 0;
    max-width: 600px;
    line-height: 1.7;
}

.tool-content-wrapper { display: flex; flex-direction: column; gap: 32px; }
@media (min-width: 1024px) { .tool-content-wrapper { flex-direction: row; align-items: flex-start; } }

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

.tool-sidebar {
    width: 100%;
    flex-shrink: 0;
}

@media (min-width: 1024px) {
    .tool-sidebar {
        width: 288px;
        position: sticky;
        top: 90px;
    }
}

/* ============================================
   FORM CONTROLS
   ============================================ */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
}

.card-pad { padding: 24px; }
.card-pad-sm { padding: 16px; }

.form-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: none;
}

.form-input {
    width: 100%;
    padding: 10px 16px;
    border-radius: 10px;
    border: 1.5px solid var(--border-subtle);
    background: rgba(248,250,252,0.5);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

[data-theme="dark"] .form-input {
    background: rgba(30,41,59,0.5);
    border-color: #334155;
}

.form-input:focus {
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.12);
}

.form-input-lg {
    padding: 12px 16px;
    font-size: 16px;
}

.form-textarea {
    width: 100%;
    padding: 14px 16px;
    border-radius: 10px;
    border: 1.5px solid var(--border-subtle);
    background: rgba(248,250,252,0.5);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.6;
    outline: none;
    resize: vertical;
    transition: border-color 0.2s, box-shadow 0.2s;
    font-family: inherit;
}

[data-theme="dark"] .form-textarea {
    background: rgba(9,13,22,0.8);
    border-color: #334155;
}

.form-textarea:focus {
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.12);
}

.form-select {
    width: 100%;
    padding: 10px 16px;
    border-radius: 10px;
    border: 1.5px solid var(--border-subtle);
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    cursor: pointer;
    transition: border-color 0.2s;
}

.form-select:focus { border-color: var(--brand-primary); }

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--brand-primary);
    color: white;
    box-shadow: 0 4px 12px rgba(99,102,241,0.25);
}

.btn-primary:hover {
    background: #4338ca;
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(99,102,241,0.3);
}

.btn-secondary {
    background: rgba(241,245,249,0.9);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
}

[data-theme="dark"] .btn-secondary {
    background: rgba(30,41,59,0.9);
    color: #cbd5e1;
    border-color: #334155;
}

.btn-secondary:hover { background: #e2e8f0; }
[data-theme="dark"] .btn-secondary:hover { background: #1e293b; }

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent;
}

.btn-ghost:hover {
    background: rgba(241,245,249,0.9);
    border-color: var(--border-subtle);
}

[data-theme="dark"] .btn-ghost:hover { background: rgba(30,41,59,0.9); }

.btn-danger { background: #ef4444; color: white; }
.btn-danger:hover { background: #dc2626; }

.btn-sm { padding: 6px 12px; font-size: 12px; border-radius: 8px; }
.btn-lg { padding: 14px 28px; font-size: 16px; border-radius: 12px; }
.btn-full { width: 100%; }
.btn-icon { padding: 8px; width: 36px; height: 36px; }

/* Segmented Control */
.segmented {
    display: flex;
    padding: 4px;
    background: rgba(241,245,249,0.9);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    gap: 4px;
}

[data-theme="dark"] .segmented {
    background: rgba(15,23,42,0.9);
    border-color: #1e293b;
}

.seg-btn {
    flex: 1;
    padding: 7px 16px;
    border-radius: 9px;
    font-size: 12px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    background: transparent;
    color: var(--text-muted);
    transition: all 0.2s;
    white-space: nowrap;
}

.seg-btn.active {
    background: white;
    color: var(--brand-primary);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

[data-theme="dark"] .seg-btn.active {
    background: var(--brand-primary);
    color: white;
}

.seg-btn:hover:not(.active) { color: var(--text-primary); }

/* ============================================
   RESULT / OUTPUT AREAS
   ============================================ */
.result-card {
    background: var(--card-bg);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    padding: 24px;
}

.result-label {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    display: block;
    margin-bottom: 4px;
}

.result-value {
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 900;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    color: var(--text-primary);
    letter-spacing: -0.03em;
}

.result-tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 9999px;
    font-size: 13px;
    font-weight: 700;
    background: rgba(241,245,249,0.9);
    color: var(--text-secondary);
}

[data-theme="dark"] .result-tag { background: #1e293b; }

.stat-grid {
    display: grid;
    gap: 12px;
}

.stat-grid-2 { grid-template-columns: repeat(2, 1fr); }
.stat-grid-3 { grid-template-columns: repeat(3, 1fr); }
.stat-grid-4 { grid-template-columns: repeat(2, 1fr); }

@media (min-width: 640px) { .stat-grid-4 { grid-template-columns: repeat(4, 1fr); } }

.stat-box {
    padding: 12px 16px;
    background: rgba(248,250,252,0.8);
    border: 1px solid rgba(226,232,240,0.6);
    border-radius: 12px;
    text-align: center;
}

[data-theme="dark"] .stat-box {
    background: rgba(30,41,59,0.5);
    border-color: rgba(51,65,85,0.6);
}

.stat-box .label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    display: block;
    margin-bottom: 4px;
}

.stat-box .value {
    font-size: 20px;
    font-weight: 800;
    font-family: monospace;
    color: var(--text-primary);
}

/* BMI Spectrum Bar */
.bmi-bar {
    height: 12px;
    border-radius: 9999px;
    background: linear-gradient(to right, #38bdf8, #34d399, #fbbf24, #f87171);
    position: relative;
    overflow: visible;
    margin: 8px 0;
}

.bmi-indicator {
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: white;
    border: 2.5px solid var(--brand-primary);
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    transition: left 0.4s;
}

[data-theme="dark"] .bmi-indicator { background: #1e293b; }

.bmi-labels {
    display: flex;
    justify-content: space-between;
    font-size: 10px;
    color: var(--text-muted);
    font-weight: 500;
    padding-top: 8px;
}

/* ============================================
   CODE EDITOR
   ============================================ */
.code-editor {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    overflow: hidden;
    min-height: 360px;
}

.code-editor-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    background: rgba(241,245,249,0.8);
    border-bottom: 1px solid var(--border-subtle);
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
}

[data-theme="dark"] .code-editor-header {
    background: rgba(30,41,59,0.8);
    border-bottom-color: #334155;
}

.code-editor-body {
    display: flex;
    flex: 1;
    background: white;
}

[data-theme="dark"] .code-editor-body { background: #030712; }

.line-numbers {
    padding: 12px 8px;
    background: rgba(248,250,252,0.6);
    border-right: 1px solid rgba(226,232,240,0.6);
    font-family: monospace;
    font-size: 11px;
    line-height: 1.5rem;
    color: var(--text-muted);
    text-align: right;
    user-select: none;
    min-width: 40px;
    display: none;
}

@media (min-width: 640px) { .line-numbers { display: block; } }

[data-theme="dark"] .line-numbers {
    background: rgba(15,23,42,0.6);
    border-right-color: #334155;
}

.code-textarea {
    flex: 1;
    padding: 12px;
    background: transparent;
    border: none;
    outline: none;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 12px;
    line-height: 1.5rem;
    color: var(--text-primary);
    resize: none;
    min-height: 360px;
}

.code-pre {
    flex: 1;
    padding: 12px;
    background: transparent;
    border: none;
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 12px;
    line-height: 1.5rem;
    color: var(--text-primary);
    overflow: auto;
    white-space: pre;
    margin: 0;
    min-height: 360px;
}

/* ============================================
   DROPZONE (for file tools)
   ============================================ */
.dropzone {
    border: 2px dashed var(--border-subtle);
    border-radius: 16px;
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--card-bg);
}

.dropzone:hover, .dropzone.dragover {
    border-color: var(--brand-primary);
    background: rgba(238,242,255,0.3);
}

[data-theme="dark"] .dropzone:hover,
[data-theme="dark"] .dropzone.dragover {
    background: rgba(30,27,75,0.3);
}

.dropzone-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(238,242,255,0.8), rgba(224,231,255,0.6));
    color: var(--brand-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    border: 1px solid rgba(199,210,254,0.4);
}

[data-theme="dark"] .dropzone-icon {
    background: rgba(30,27,75,0.6);
    border-color: rgba(67,56,202,0.4);
    color: #a5b4fc;
}

.dropzone-title { font-size: 16px; font-weight: 700; color: var(--text-primary); margin: 0 0 6px; }
.dropzone-sub { font-size: 13px; color: var(--text-muted); margin: 0; }

/* ============================================
   FILE LIST ITEMS
   ============================================ */
.file-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--card-bg);
    border: 1px solid var(--border-subtle);
    border-radius: 10px;
}

.file-item-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: rgba(238,242,255,0.8);
    color: var(--brand-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

[data-theme="dark"] .file-item-icon {
    background: rgba(30,27,75,0.6);
    color: #a5b4fc;
}

.file-item-info { flex: 1; min-width: 0; }
.file-item-name { font-size: 13px; font-weight: 500; color: var(--text-primary); truncate; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-item-size { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.file-item-actions { display: flex; align-items: center; gap: 4px; flex-shrink: 0; }

/* Progress bar */
.progress-bar {
    height: 6px;
    background: rgba(226,232,240,0.8);
    border-radius: 9999px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    border-radius: 9999px;
    background: var(--brand-primary);
    transition: width 0.3s;
}

/* ============================================
   COPY / DOWNLOAD BUTTONS
   ============================================ */
.copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    background: rgba(238,242,255,0.9);
    color: var(--brand-primary);
    border: 1px solid rgba(199,210,254,0.5);
    cursor: pointer;
    transition: all 0.2s;
}

.copy-btn:hover { background: rgba(224,231,255,0.9); }
.copy-btn.copied { color: #059669; background: rgba(209,250,229,0.9); border-color: rgba(167,243,208,0.5); }

[data-theme="dark"] .copy-btn {
    background: rgba(30,27,75,0.6);
    border-color: rgba(67,56,202,0.4);
    color: #a5b4fc;
}

/* ============================================
   RELATED TOOLS SIDEBAR
   ============================================ */
.related-tools { background: var(--card-bg); border: 1px solid var(--border-subtle); border-radius: 16px; padding: 20px; box-shadow: var(--shadow-card); }
.related-tools h3 { font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-muted); margin: 0 0 16px; }

.related-tool-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    transition: all 0.15s;
}

.related-tool-link:hover { background: rgba(238,242,255,0.5); color: var(--brand-primary); }
[data-theme="dark"] .related-tool-link:hover { background: rgba(30,27,75,0.3); }

.related-tool-link .icon-sm {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: rgba(238,242,255,0.8);
    border: 1px solid rgba(199,210,254,0.4);
    color: var(--brand-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

[data-theme="dark"] .related-tool-link .icon-sm {
    background: rgba(30,27,75,0.6);
    border-color: rgba(67,56,202,0.4);
    color: #a5b4fc;
}

/* ============================================
   PASSWORD STRENGTH METER
   ============================================ */
.strength-bar {
    height: 8px;
    background: rgba(226,232,240,0.8);
    border-radius: 9999px;
    overflow: hidden;
}

.strength-fill {
    height: 100%;
    border-radius: 9999px;
    transition: width 0.4s, background 0.4s;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-subtle);
    margin-top: 80px;
    transition: background 0.2s;
}

.footer-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 48px 16px 32px;
}

@media (min-width: 640px) { .footer-inner { padding: 64px 24px 32px; } }

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: 48px;
}

@media (min-width: 640px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; } }

.footer-brand p {
    font-size: 13px;
    color: var(--text-muted);
    margin: 12px 0 0;
    max-width: 320px;
    line-height: 1.7;
}

.footer-guarantee {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 600;
    color: #4338ca;
    background: rgba(238,242,255,0.9);
    padding: 6px 12px;
    border-radius: 8px;
    margin-top: 16px;
    border: 1px solid rgba(199,210,254,0.4);
}

[data-theme="dark"] .footer-guarantee {
    color: #a5b4fc;
    background: rgba(30,27,75,0.6);
    border-color: rgba(67,56,202,0.4);
}

.footer-col h4 {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-primary);
    margin: 0 0 12px;
}

.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.footer-col li a { font-size: 13px; color: var(--text-muted); text-decoration: none; transition: color 0.15s; }
.footer-col li a:hover { color: var(--brand-primary); }

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding-top: 24px;
    border-top: 1px solid var(--border-subtle);
    font-size: 12px;
    color: var(--text-muted);
    text-align: center;
}

@media (min-width: 640px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

/* ============================================
   ALERTS / MESSAGES
   ============================================ */
.alert {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 13px;
}

.alert-error {
    background: rgba(254,242,242,0.9);
    border: 1px solid rgba(252,165,165,0.5);
    color: #b91c1c;
}

[data-theme="dark"] .alert-error {
    background: rgba(69,10,10,0.5);
    border-color: rgba(153,27,27,0.5);
    color: #fca5a5;
}

.alert-success {
    background: rgba(240,253,244,0.9);
    border: 1px solid rgba(167,243,208,0.5);
    color: #065f46;
}

[data-theme="dark"] .alert-success {
    background: rgba(6,78,59,0.3);
    border-color: rgba(52,211,153,0.3);
    color: #6ee7b7;
}

.alert-info {
    background: rgba(238,242,255,0.9);
    border: 1px solid rgba(199,210,254,0.5);
    color: #4338ca;
}

[data-theme="dark"] .alert-info {
    background: rgba(30,27,75,0.3);
    border-color: rgba(67,56,202,0.4);
    color: #a5b4fc;
}

/* ============================================
   VALID / INVALID BADGES
   ============================================ */
.badge-valid {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 9999px;
    font-size: 11px;
    font-weight: 700;
    background: rgba(240,253,244,0.9);
    color: #065f46;
    border: 1px solid rgba(167,243,208,0.5);
}

[data-theme="dark"] .badge-valid {
    background: rgba(6,78,59,0.3);
    border-color: rgba(52,211,153,0.3);
    color: #6ee7b7;
}

.badge-invalid {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 9999px;
    font-size: 11px;
    font-weight: 700;
    background: rgba(254,242,242,0.9);
    color: #b91c1c;
    border: 1px solid rgba(252,165,165,0.5);
}

[data-theme="dark"] .badge-invalid {
    background: rgba(69,10,10,0.5);
    border-color: rgba(153,27,27,0.5);
    color: #fca5a5;
}

/* ============================================
   LOADING SPINNER
   ============================================ */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(99,102,241,0.2);
    border-top-color: var(--brand-primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.animate-fade-in { animation: fadeIn 0.3s ease; }

/* ============================================
   UTILITIES
   ============================================ */
.hidden { display: none !important; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.gap-5 { gap: 20px; }
.gap-6 { gap: 24px; }
.flex-1 { flex: 1; }
.flex-wrap { flex-wrap: wrap; }
.font-mono { font-family: 'SF Mono', 'Fira Code', monospace; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.text-sm { font-size: 13px; }
.text-xs { font-size: 11px; }
.text-lg { font-size: 18px; }
.text-xl { font-size: 20px; }
.text-2xl { font-size: 24px; }
.text-brand { color: var(--brand-primary); }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--text-primary); }
.w-full { width: 100%; }
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mt-8 { margin-top: 32px; }
.mb-1 { margin-bottom: 4px; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.mb-8 { margin-bottom: 32px; }
.space-y-4 > * + * { margin-top: 16px; }
.space-y-6 > * + * { margin-top: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid-2-mobile { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 640px) { .grid-2-mobile { grid-template-columns: repeat(2, 1fr); } }
.capitalize { text-transform: capitalize; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.border-top { border-top: 1px solid var(--border-subtle); padding-top: 16px; }

/* ============================================
   CATEGORY PAGE
   ============================================ */
.category-page-hero {
    padding: 40px 16px;
    text-align: center;
    background: linear-gradient(180deg, rgba(238,242,255,0.5) 0%, transparent 100%);
    margin-bottom: 40px;
    border-radius: 20px;
}

[data-theme="dark"] .category-page-hero {
    background: linear-gradient(180deg, rgba(30,27,75,0.3) 0%, transparent 100%);
}

/* ============================================
   RESPONSIVE HELPERS
   ============================================ */
@media (max-width: 639px) {
    .hide-mobile { display: none !important; }
    .grid-2 { grid-template-columns: 1fr; }
    .stat-grid-3 { grid-template-columns: repeat(3, 1fr); }
    .stat-grid-3 .stat-box { padding: 10px 8px; }
    .stat-box .value { font-size: 16px; }
}

@media (min-width: 640px) {
    .show-mobile-only { display: none !important; }
}

/* ============================================
   CATEGORY HUB CARDS (HOME PAGE 1/2 ROW GRID)
   ============================================ */
.category-cards-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

@media (max-width: 1100px) {
    .category-cards-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .category-cards-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
}

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

.category-hub-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 18px;
    background: var(--card-bg);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-card);
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.category-hub-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--brand-primary);
}

.cat-hub-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
    transition: transform 0.2s;
}

.category-hub-card:hover .cat-hub-icon {
    transform: scale(1.08);
}

.cat-hub-icon.pdf-icon {
    background: rgba(239, 68, 68, 0.12);
    color: #ef4444;
}

.cat-hub-icon.img-icon {
    background: rgba(16, 185, 129, 0.12);
    color: #10b981;
}

.cat-hub-icon.dev-icon {
    background: rgba(99, 102, 241, 0.12);
    color: #6366f1;
}

.cat-hub-icon.calc-icon {
    background: rgba(245, 158, 11, 0.12);
    color: #f59e0b;
}

.cat-hub-icon.seo-icon {
    background: rgba(168, 85, 247, 0.12);
    color: #a855f7;
}

.category-hub-card h3 {
    margin: 0 0 6px 0;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
}

.category-hub-card p {
    margin: 0;
    font-size: 12px;
    line-height: 1.45;
    color: var(--text-muted);
}