/* ==========================================================================
   Toolsenin - Master Design System
   Modern, Clean, High-Conversion UI for Web Utility Tools
   ========================================================================== */

/* --- CSS Variables & Design Tokens --- */
:root {
    /* Color Palette (Light Mode) */
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #eff6ff;
    --primary-glow: rgba(37, 99, 235, 0.15);

    --accent-emerald: #10b981;
    --accent-indigo: #6366f1;
    --accent-amber: #f59e0b;
    --accent-rose: #f43f5e;
    --accent-purple: #8b5cf6;

    --bg-page: #f8fafc;
    --bg-card: #ffffff;
    --bg-card-hover: #fcfdfe;
    --bg-elevated: #ffffff;
    --bg-input: #ffffff;
    --bg-input-focus: #ffffff;
    --bg-subtle: #f1f5f9;
    --bg-badge: #f1f5f9;

    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-inverse: #ffffff;

    --border-color: #e2e8f0;
    --border-focus: #3b82f6;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.03);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    --header-height: 72px;
    --transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Dark Mode Tokens */
[data-theme="dark"] {
    --primary: #3b82f6;
    --primary-hover: #60a5fa;
    --primary-light: rgba(59, 130, 246, 0.12);
    --primary-glow: rgba(59, 130, 246, 0.25);

    --bg-page: #0b0f19;
    --bg-card: #111827;
    --bg-card-hover: #172033;
    --bg-elevated: #1f2937;
    --bg-input: #151d2f;
    --bg-input-focus: #182238;
    --bg-subtle: #192237;
    --bg-badge: #1f293d;

    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --text-inverse: #0f172a;

    --border-color: #232f48;
    --border-focus: #60a5fa;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-page);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

img, svg {
    display: block;
    max-width: 100%;
}

button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 20px;
    padding-right: 20px;
}

.site-main {
    flex: 1 0 auto;
    padding-bottom: 60px;
}

/* --- Header & Navigation --- */
.site-header {
    height: var(--header-height);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    transition: var(--transition);
}

.header-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

/* Brand Logo */
.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, #2563eb, #8b5cf6);
    color: #ffffff;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
    transition: var(--transition);
}

.brand-logo:hover .logo-icon {
    transform: rotate(-6deg) scale(1.05);
}

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

.logo-main {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.logo-main .highlight {
    background: linear-gradient(135deg, #2563eb, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-sub {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* Global Search Bar */
.header-search {
    flex: 1;
    max-width: 440px;
    position: relative;
}

.header-search input {
    width: 100%;
    padding: 10px 42px 10px 38px;
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    outline: none;
    font-size: 14px;
    transition: var(--transition);
}

.header-search input:focus {
    background: var(--bg-input-focus);
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.header-search .search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 14px;
}

.header-search .search-shortcut {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 11px;
    font-family: var(--font-mono);
    color: var(--text-muted);
}

/* Search Dropdown Results */
.search-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    max-height: 380px;
    overflow-y: auto;
    display: none;
    z-index: 200;
}

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

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

.search-dropdown-item:last-child {
    border-bottom: none;
}

.search-dropdown-item:hover, .search-dropdown-item.selected {
    background: var(--primary-light);
}

.search-item-icon {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-subtle);
    color: var(--primary);
    font-size: 14px;
    flex-shrink: 0;
}

.search-item-info {
    flex: 1;
    min-width: 0;
}

.search-item-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-item-desc {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-empty {
    padding: 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

/* Main Nav */
.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 8px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}

.nav-link:hover {
    color: var(--primary);
    background: var(--bg-subtle);
}

.nav-arrow {
    font-size: 10px;
    transition: transform 0.2s ease;
}

/* Dropdown Menu */
.nav-item.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 290px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 150;
}

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

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.dropdown-item:hover {
    background: var(--bg-subtle);
}

.cat-icon-badge {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.dropdown-item strong {
    display: block;
    font-size: 13px;
    color: var(--text-primary);
}

.dropdown-item small {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
}

/* Header Action Buttons */
.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.btn-icon:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

/* Theme Toggle Icons */
[data-theme="light"] .light-icon {
    display: none;
}
[data-theme="dark"] .dark-icon {
    display: none;
}
[data-theme="dark"] .light-icon {
    color: #f59e0b;
}

.mobile-menu-toggle {
    display: none;
}

/* --- Mobile Drawer --- */
.mobile-drawer {
    position: fixed;
    top: 0;
    right: -320px;
    width: 300px;
    height: 100vh;
    background: var(--bg-card);
    z-index: 1000;
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    transition: right 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-drawer.active {
    right: 0;
}

.drawer-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    border-bottom: 1px solid var(--border-color);
}

.drawer-title {
    font-size: 16px;
    font-weight: 700;
}

.drawer-content {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.drawer-search input {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.drawer-section-title {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    margin: 16px 0 8px;
}

.drawer-list {
    list-style: none;
}

.drawer-list li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.drawer-list li a:hover {
    background: var(--bg-subtle);
    color: var(--primary);
}

.drawer-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.drawer-backdrop.active {
    opacity: 1;
    visibility: visible;
}

/* ==========================================================================
   Hero Section (Homepage)
   ========================================================================== */
.hero-section {
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-page) 100%);
    border-bottom: 1px solid var(--border-color);
    padding: 56px 0 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 20px;
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.hero-title {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -1px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.hero-title .highlight {
    background: linear-gradient(135deg, #2563eb, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 17px;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto 32px;
    line-height: 1.6;
}

/* Hero Quick Filter Pills */
.hero-category-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 24px;
}

.cat-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.cat-pill:hover, .cat-pill.active {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--primary-glow);
}

.cat-pill:hover i, .cat-pill.active i {
    color: #ffffff !important;
}

/* ==========================================================================
   Catalog & Tool Grid Cards
   ========================================================================== */
.tools-section {
    padding: 48px 0;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 16px;
}

.section-title-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-icon-box {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.section-title {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.section-desc {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 2px;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
    gap: 20px;
}

/* Tool Card */
.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 22px;
    display: flex;
    flex-direction: column;
    position: relative;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-focus);
    background: var(--bg-card-hover);
}

.tool-card-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 14px;
}

.tool-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
    transition: var(--transition);
}

.tool-card:hover .tool-card-icon {
    transform: scale(1.08);
}

.tool-card-badge {
    font-size: 11px;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: var(--radius-full);
    background: var(--bg-badge);
    color: var(--text-muted);
}

.tool-card-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.35;
}

.tool-card-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 18px;
    flex: 1;
}

.tool-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--border-color);
    padding-top: 14px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
}

.tool-card:hover .tool-card-footer i {
    transform: translateX(4px);
}

.tool-card-footer i {
    transition: transform 0.2s ease;
}

/* ==========================================================================
   Tool Page Layout (Interactive Calculator + Rich Article)
   ========================================================================== */
.tool-page-header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 32px 0 28px;
}

.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 14px;
    flex-wrap: wrap;
}

.breadcrumbs a:hover {
    color: var(--primary);
}

.breadcrumbs i {
    font-size: 10px;
}

.breadcrumbs .current {
    color: var(--text-primary);
    font-weight: 600;
}

.tool-header-title-row {
    display: flex;
    align-items: center;
    gap: 16px;
}

.tool-header-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: #ffffff;
    box-shadow: var(--shadow-md);
    flex-shrink: 0;
}

.tool-page-title {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

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

/* Tool Main Content Grid */
.tool-content-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 36px;
    padding: 36px 0;
}

/* Widget Card (Interactive Calculator/Tool) */
.tool-widget-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 32px;
    position: relative;
}

.widget-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 16px;
}

/* Form Styles */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.form-label .label-hint {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 400;
}

.input-with-affix {
    position: relative;
    display: flex;
    align-items: center;
}

.input-affix-prefix, .input-affix-suffix {
    position: absolute;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    pointer-events: none;
}

.input-affix-prefix {
    left: 14px;
}

.input-affix-suffix {
    right: 14px;
}

.form-control {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg-input);
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 15px;
    color: var(--text-primary);
    outline: none;
    transition: var(--transition);
}

.input-with-affix .form-control.has-prefix {
    padding-left: 42px;
}

.input-with-affix .form-control.has-suffix {
    padding-right: 48px;
}

.form-control:focus {
    border-color: var(--border-focus);
    background: var(--bg-input-focus);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
    font-family: inherit;
    line-height: 1.5;
}

/* Range Slider */
.slider-group {
    display: flex;
    align-items: center;
    gap: 16px;
}

.range-slider {
    flex: 1;
    height: 6px;
    background: var(--bg-subtle);
    border-radius: var(--radius-full);
    outline: none;
    accent-color: var(--primary);
    cursor: pointer;
}

/* Button & Action Bar */
.form-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 12px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

.btn-primary {
    background: var(--primary);
    color: #ffffff;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px var(--primary-glow);
}

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

.btn-secondary:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.btn-copy {
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 14px;
    font-size: 13px;
    border-radius: var(--radius-sm);
}

.btn-copy:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
}

/* Results Display Box */
.tool-result-box {
    margin-top: 28px;
    background: var(--bg-subtle);
    border: 1.5px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
}

.tool-result-box.has-result {
    border-style: solid;
    border-color: var(--primary);
    background: var(--primary-light);
}

.result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.result-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.result-big-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.5px;
    margin-bottom: 8px;
    word-break: break-all;
}

.result-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-top: 16px;
}

.result-stat-card {
    background: var(--bg-card);
    padding: 14px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.result-stat-card .stat-label {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 4px;
}

.result-stat-card .stat-val {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

/* Responsive Table */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    margin-top: 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.table-custom {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    text-align: left;
}

.table-custom th {
    background: var(--bg-card);
    padding: 12px 16px;
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
}

.table-custom td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.table-custom tr:nth-child(even) {
    background: var(--bg-subtle);
}

/* ==========================================================================
   Editorial Content Section (Anti-Reject AdSense Engine)
   ========================================================================== */
.editorial-article {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-sm);
    line-height: 1.8;
}

.editorial-article h2 {
    font-size: 24px;
    font-weight: 800;
    color: var(--text-primary);
    margin: 32px 0 16px;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.editorial-article h2:first-child {
    margin-top: 0;
}

.editorial-article h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 24px 0 12px;
}

.editorial-article p {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.editorial-article ul, .editorial-article ol {
    margin: 16px 0 20px 24px;
    color: var(--text-secondary);
    font-size: 15px;
}

.editorial-article li {
    margin-bottom: 8px;
}

/* Callout Box */
.callout-box {
    background: var(--bg-subtle);
    border-left: 4px solid var(--primary);
    padding: 18px 20px;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin: 24px 0;
}

.callout-box p {
    margin-bottom: 0;
    font-size: 14px;
}

/* Formula Block */
.formula-block {
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    font-family: var(--font-mono);
    font-size: 14px;
    color: var(--primary);
    margin: 20px 0;
    overflow-x: auto;
}

/* FAQ Accordion */
.faq-section {
    margin-top: 36px;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    overflow: hidden;
    background: var(--bg-card);
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--border-focus);
}

.faq-question {
    padding: 16px 20px;
    font-weight: 700;
    font-size: 15px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    user-select: none;
}

.faq-question i {
    font-size: 12px;
    color: var(--text-muted);
    transition: transform 0.25s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
    color: var(--primary);
}

.faq-answer {
    padding: 0 20px 18px;
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

/* --- Variasi Layout Widget & Elemen Human Touch --- */
.tool-split-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 992px) {
    .tool-split-layout {
        grid-template-columns: 1.15fr 0.85fr;
        gap: 28px;
        align-items: start;
    }
    .tool-sticky-panel {
        position: sticky;
        top: calc(var(--header-height) + 20px);
    }
}

.preset-chips {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin: 12px 0 18px;
}

.preset-chips-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
}

.preset-chip {
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
}

.preset-chip:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
    transform: translateY(-1px);
}

.preset-chip.active {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
}

.tip-box {
    background: rgba(16, 185, 129, 0.08);
    border: 1px solid rgba(16, 185, 129, 0.25);
    border-left: 4px solid var(--accent-emerald);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    font-size: 13.5px;
    color: var(--text-secondary);
    margin: 16px 0;
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.tip-box i {
    color: var(--accent-emerald);
    font-size: 16px;
    margin-top: 2px;
}

.qa-simple-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 20px;
}

.qa-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px 22px;
    transition: var(--transition);
}

.qa-card:hover {
    border-color: var(--border-focus);
    box-shadow: var(--shadow-sm);
}

.qa-card h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.qa-card h4 i {
    color: var(--primary);
    font-size: 13px;
}

.qa-card p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}


/* ==========================================================================
   Google AdSense Slot Component Styling
   ========================================================================== */
.ad-container {
    margin: 28px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.ad-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 6px;
    text-transform: uppercase;
}

.ad-content-box {
    width: 100%;
    max-width: 970px;
    background: var(--bg-subtle);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Placeholder Styling for AdSense Approval Stage */
.ad-placeholder-inner {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    width: 100%;
    justify-content: center;
    color: var(--text-secondary);
}

.ad-icon {
    width: 36px;
    height: 36px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 14px;
    flex-shrink: 0;
}

.ad-text-group {
    display: flex;
    flex-direction: column;
}

.ad-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
}

.ad-sub {
    font-size: 11px;
    color: var(--text-muted);
}

.ad-badge {
    margin-left: auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
}

/* ==========================================================================
   Footer Styling
   ========================================================================== */
.site-footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.footer-top {
    padding: 60px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
    gap: 40px;
}

.footer-logo {
    margin-bottom: 16px;
}

.footer-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.privacy-badge {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    background: var(--bg-subtle);
    border: 1px solid var(--border-color);
    padding: 12px 14px;
    border-radius: var(--radius-md);
    font-size: 12px;
    color: var(--text-secondary);
}

.privacy-badge i {
    color: var(--accent-emerald);
    font-size: 14px;
    margin-top: 2px;
}

.footer-heading {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 18px;
    letter-spacing: -0.3px;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links li a {
    font-size: 13px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links li a:hover {
    color: var(--primary);
    transform: translateX(3px);
}

.footer-bottom {
    background: var(--bg-subtle);
    border-top: 1px solid var(--border-color);
    padding: 24px 0;
}

.footer-bottom-inner {
    display: flex;
    flex-direction: column;
    gap: 12px;
    text-align: center;
}

.footer-disclaimer-text {
    color: var(--text-muted);
    font-size: 12px;
    line-height: 1.5;
    max-width: 900px;
    margin: 0 auto;
}

.footer-copyright {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Floating Back To Top Button */
.back-to-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    background: var(--primary);
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 14px var(--primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: var(--transition);
    z-index: 90;
}

.back-to-top.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

/* Toast Notification (Copy Feedback) */
.toast-notice {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: #0f172a;
    color: #ffffff;
    padding: 10px 20px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 2000;
}

.toast-notice.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 992px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .col-brand {
        grid-column: 1 / -1;
    }
    .hero-title {
        font-size: 34px;
    }
    .header-search {
        display: none;
    }
    .main-nav {
        display: none;
    }
    .mobile-menu-toggle {
        display: flex;
    }
}

@media (max-width: 640px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .hero-title {
        font-size: 28px;
    }
    .tool-page-title {
        font-size: 22px;
    }
    .tool-widget-card {
        padding: 20px;
    }
    .editorial-article {
        padding: 24px;
    }
    .result-big-value {
        font-size: 24px;
    }
    .ad-placeholder-inner {
        flex-direction: column;
        text-align: center;
    }
    .ad-badge {
        margin-left: 0;
    }
}