/* ==============================================================
   bast4u - Frontend SaaS Stylesheet
   Modern, Ultra-clean, High Performance, Responsive, Light/Dark
   ============================================================== */

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

:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-subtle: rgba(79, 70, 229, 0.08);
    --secondary: #06b6d4;
    --accent: #f59e0b;
    --success: #10b981;
    --danger: #ef4444;
    --bg-light: #f8fafc;
    --bg-dark: #0f172a;
    --card-light: #ffffff;
    --card-dark: #1e293b;
    --border-light: #e2e8f0;
    --border-dark: #334155;
    --text-light: #0f172a;
    --text-dark: #f8fafc;
    --text-muted-light: #64748b;
    --text-muted-dark: #94a3b8;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    --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, 0.04);
    --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, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Theme Variables */
html[data-theme="light"],
html:not([data-theme="dark"]) {
    --bg-page: var(--bg-light);
    --bg-card: var(--card-light);
    --border-color: var(--border-light);
    --text-main: var(--text-light);
    --text-muted: var(--text-muted-light);
    --header-bg: rgba(255, 255, 255, 0.85);
    --card-hover-border: #cbd5e1;
}

/* Dark Theme Variables */
html[data-theme="dark"] {
    --bg-page: var(--bg-dark);
    --bg-card: var(--card-dark);
    --border-color: var(--border-dark);
    --text-main: var(--text-dark);
    --text-muted: var(--text-muted-dark);
    --header-bg: rgba(15, 23, 42, 0.85);
    --card-hover-border: #475569;
}

/* Base Styles */
body {
    font-family: var(--font-family);
    background-color: var(--bg-page);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    transition: background-color 0.25s ease, color 0.25s ease;
}

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

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

.container {
    width: 100%;
    max-width: 1240px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-main);
    font-weight: 700;
    line-height: 1.25;
}
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-danger { color: var(--danger); }
.text-success { color: var(--success); }
.font-semibold { font-weight: 600; }
.font-mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    gap: 0.35rem;
}
.btn-primary {
    background-color: var(--primary);
    color: #ffffff;
}
.btn-primary:hover {
    background-color: var(--primary-hover);
    color: #ffffff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
}
.btn-outline-primary {
    background-color: transparent;
    border-color: var(--primary);
    color: var(--primary);
}
.btn-outline-primary:hover {
    background-color: var(--primary);
    color: #ffffff;
}
.btn-outline-secondary {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-main);
}
.btn-outline-secondary:hover {
    background-color: var(--border-color);
}
.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
}
.btn-lg {
    padding: 0.85rem 1.75rem;
    font-size: 1.05rem;
    border-radius: var(--radius-md);
}
.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    cursor: pointer;
    transition: var(--transition);
}
.btn-icon:hover {
    background-color: var(--border-color);
}

/* Form Controls */
.form-group {
    margin-bottom: 1.25rem;
}
.form-label {
    display: block;
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
}
.form-control {
    width: 100%;
    padding: 0.65rem 0.95rem;
    font-size: 0.95rem;
    font-family: inherit;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-main);
    transition: var(--transition);
}
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-subtle);
}

/* ==============================================================
   Site Header & Navigation
   ============================================================== */
.site-header {
    width: 100%;
    background-color: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    transition: var(--transition);
}
.site-header.is-sticky {
    position: sticky;
    top: 0;
}
.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
}
.logo-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.3);
}
.logo-brand {
    font-size: 1.45rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-main);
}
.brand-accent {
    color: var(--primary);
}
.logo-image {
    max-height: 40px;
    width: auto;
}

/* Nav Menu */
.header-nav {
    display: flex;
    align-items: center;
}
.nav-list {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 0.5rem;
}
.nav-link {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 0.85rem;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-main);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: var(--transition);
}
.nav-link:hover {
    color: var(--primary);
    background-color: var(--primary-subtle);
}

/* Dropdown */
.has-dropdown {
    position: relative;
}
.dropdown-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
}
.dropdown-panel {
    position: absolute;
    top: 100%;
    left: 0;
    width: 480px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: 1rem;
    margin-top: 0.5rem;
    display: none;
    z-index: 105;
    animation: fadeInDropdown 0.15s ease-out;
}
@keyframes fadeInDropdown {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}
.has-dropdown:hover .dropdown-panel,
.has-dropdown:focus-within .dropdown-panel {
    display: block;
}
.dropdown-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}
.dropdown-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.65rem 0.75rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-main);
    transition: var(--transition);
}
.dropdown-item:hover {
    background-color: var(--primary-subtle);
}
.dropdown-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background-color: var(--border-color);
    color: var(--primary);
    flex-shrink: 0;
}
.dropdown-title {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-main);
}
.dropdown-desc {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}
.theme-icon-light { display: none; }
.theme-icon-dark { display: block; }
html[data-theme="dark"] .theme-icon-light { display: block; }
html[data-theme="dark"] .theme-icon-dark { display: none; }

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 32px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}
.mobile-menu-toggle .bar {
    height: 3px;
    width: 100%;
    background-color: var(--text-main);
    border-radius: var(--radius-full);
    transition: var(--transition);
}

/* ==============================================================
   Hero Section
   ============================================================== */
.hero-section {
    position: relative;
    padding: 4.5rem 0 3.5rem 0;
    text-align: center;
    overflow: hidden;
    background: radial-gradient(circle at 50% 0%, var(--primary-subtle) 0%, transparent 70%);
}
.hero-glow {
    position: absolute;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.15;
    pointer-events: none;
}
.hero-glow-1 {
    top: -50px;
    left: 20%;
    background-color: var(--primary);
}
.hero-glow-2 {
    top: 50px;
    right: 20%;
    background-color: var(--secondary);
}
.hero-container {
    position: relative;
    z-index: 2;
    max-width: 820px;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-full);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 1.5rem;
}
.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--success);
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2);
}
.hero-title {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.035em;
    line-height: 1.15;
    margin-bottom: 1.25rem;
}
.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 680px;
    margin: 0 auto 2.25rem auto;
}

/* Hero Search Bar */
.hero-search-wrapper {
    position: relative;
    max-width: 650px;
    margin: 0 auto 2rem auto;
}
.hero-search-form {
    display: flex;
    align-items: center;
    background-color: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    padding: 0.4rem 0.5rem 0.4rem 1.25rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}
.hero-search-form:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-subtle), var(--shadow-lg);
}
.search-form-icon {
    color: var(--text-muted);
    margin-right: 0.75rem;
    display: flex;
    align-items: center;
}
.hero-search-input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-main);
    outline: none;
}
.hero-search-submit {
    background-color: var(--primary);
    color: #ffffff;
    border: none;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.65rem 1.5rem;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition);
}
.hero-search-submit:hover {
    background-color: var(--primary-hover);
}

/* Hero Live Floating Dropdown */
.hero-live-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    margin-top: 0.65rem;
    padding: 0.5rem;
    z-index: 110;
    text-align: left;
    max-height: 380px;
    overflow-y: auto;
}
.live-search-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-main);
    transition: var(--transition);
}
.live-search-item:hover {
    background-color: var(--primary-subtle);
}
.live-item-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background-color: var(--border-color);
    color: var(--primary);
    flex-shrink: 0;
}
.live-item-info {
    flex: 1;
}
.live-item-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-main);
}
.live-item-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
}
.live-item-cat {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-full);
    background-color: var(--border-color);
    color: var(--text-muted);
}

/* Quick Category Filter Pills */
.hero-quick-categories {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.quick-cat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}
.quick-cat-pills {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.4rem;
}
.quick-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    text-decoration: none;
    transition: var(--transition);
}
.quick-pill:hover,
.quick-pill.active {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
}

/* ==============================================================
   Homepage Sections & Tool Cards
   ============================================================== */
.site-content-container {
    padding-top: 2rem;
    padding-bottom: 4rem;
    flex: 1;
}
.home-section {
    margin-bottom: 4.5rem;
}
.section-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 2rem;
}
.section-badge {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary);
    margin-bottom: 0.35rem;
}
.section-title {
    font-size: 1.85rem;
    letter-spacing: -0.025em;
}
.section-subtitle {
    font-size: 1rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}
.section-view-all {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--primary);
    text-decoration: none;
    white-space: nowrap;
}
.section-view-all:hover {
    text-decoration: underline;
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

/* Tool Card */
.tool-card {
    display: flex;
    flex-direction: column;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.4rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
}
.tool-card:hover {
    transform: translateY(-4px);
    border-color: var(--card-hover-border);
    box-shadow: var(--shadow-lg);
}
.tool-card.is-featured {
    border-top: 3px solid var(--primary);
}
.tool-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 1rem;
}
.tool-icon-box {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--primary-subtle);
    color: var(--primary);
    flex-shrink: 0;
}
.tool-custom-icon {
    width: 32px;
    height: 32px;
    object-fit: contain;
}
.tool-card-badges {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.3rem;
}
.badge {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-full);
}
.badge-popular {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}
.badge-featured {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--accent);
}
.tool-category-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 0.4rem;
}
.tool-card-title {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}
.tool-card-title a {
    color: var(--text-main);
    text-decoration: none;
}
.tool-card-title a:hover {
    color: var(--primary);
}
.tool-card-desc {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 1.25rem;
    flex: 1;
}
.tool-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 0.85rem;
    border-top: 1px solid var(--border-color);
}
.tool-usage-count {
    display: inline-flex;
    align-items: center;
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
}
.tool-card-btn {
    display: inline-flex;
    align-items: center;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    text-decoration: none;
}
.tool-card-btn:hover {
    gap: 0.25rem;
}

/* ==============================================================
   Categories Grid
   ============================================================== */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}
.category-card {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-decoration: none;
    color: var(--text-main);
    transition: var(--transition);
}
.category-card:hover {
    transform: translateY(-3px);
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}
.category-icon-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 54px;
    height: 54px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary-subtle), rgba(6, 182, 212, 0.1));
    color: var(--primary);
    flex-shrink: 0;
}
.category-name {
    font-size: 1.2rem;
    margin-bottom: 0.35rem;
}
.category-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}
.category-count {
    display: inline-block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--primary);
}

/* Trust Banner */
.trust-card {
    background: linear-gradient(135deg, var(--bg-card), var(--primary-subtle));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem 2.5rem;
}
.trust-header {
    text-align: center;
    max-width: 650px;
    margin: 0 auto 2.5rem auto;
}
.trust-header h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}
.trust-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}
.trust-feature-item {
    text-align: center;
}
.trust-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: var(--radius-full);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--success);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
}
.trust-feature-item h4 {
    font-size: 1.15rem;
    margin-bottom: 0.35rem;
}
.trust-feature-item p {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ==============================================================
   Tool Directory Page
   ============================================================== */
.page-header-bar {
    background: radial-gradient(circle at 50% 0%, var(--primary-subtle) 0%, transparent 60%);
    border-bottom: 1px solid var(--border-color);
    padding: 2.5rem 0 2rem 0;
}
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.4rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.85rem;
}
.breadcrumb a {
    color: var(--text-muted);
    text-decoration: none;
}
.breadcrumb a:hover {
    color: var(--primary);
}
.breadcrumb-separator {
    color: var(--border-color);
}
.breadcrumb-current {
    color: var(--text-main);
    font-weight: 600;
}
.page-title {
    font-size: 2.25rem;
    margin-bottom: 0.5rem;
}
.page-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 720px;
}

/* Directory Toolbar */
.directory-toolbar {
    margin-bottom: 2rem;
}
.directory-search-box {
    position: relative;
    max-width: 480px;
    margin-bottom: 1.25rem;
}
.directory-search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-family: inherit;
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
    outline: none;
    transition: var(--transition);
}
.directory-search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-subtle);
}
.directory-search-box .search-icon {
    position: absolute;
    left: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}
.clear-search-btn {
    position: absolute;
    right: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    color: var(--text-muted);
    text-decoration: none;
}
.category-tabs-scroll {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
}
.cat-tab {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.88rem;
    font-weight: 600;
    white-space: nowrap;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    text-decoration: none;
    transition: var(--transition);
}
.cat-tab:hover,
.cat-tab.active {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #ffffff;
}

/* ==============================================================
   Single Tool Detail Page
   ============================================================== */
.tool-detail-header-bar {
    background: radial-gradient(circle at 50% 0%, var(--primary-subtle) 0%, transparent 60%);
    border-bottom: 1px solid var(--border-color);
    padding: 2rem 0;
}
.tool-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    margin-top: 0.5rem;
}
.tool-header-left {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}
.tool-header-icon-box {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
    flex-shrink: 0;
}
.tool-large-icon {
    width: 42px;
    height: 42px;
    object-fit: contain;
}
.tool-meta-tags {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.35rem;
}
.badge-cat {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--primary);
}
.badge-phase {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.15rem 0.55rem;
    border-radius: var(--radius-full);
    background-color: var(--primary-subtle);
    color: var(--primary);
    border: 1px solid rgba(79, 70, 229, 0.2);
}
.tool-page-title {
    font-size: 2.2rem;
    margin-bottom: 0.25rem;
}
.tool-page-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
}
.tool-header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.tool-stats-chip {
    text-align: right;
}
.stat-number {
    display: block;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1;
}
.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

/* Tool Main Layout */
.tool-main-layout {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 2rem;
    margin-top: 1.5rem;
}

/* Phase 1 Prototype Notice */
.tool-phase-alert {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background-color: rgba(79, 70, 229, 0.06);
    border: 1px solid rgba(79, 70, 229, 0.2);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
}
.alert-icon-box {
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 2px;
}
.alert-content-box h4 {
    font-size: 0.95rem;
    margin-bottom: 0.2rem;
    color: var(--primary);
}
.alert-content-box p {
    font-size: 0.85rem;
    color: var(--text-main);
    margin: 0;
}

/* Tool Workspace Card */
.tool-workspace-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}
.workspace-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(0, 0, 0, 0.02);
}
.tab-btn {
    padding: 0.85rem 1.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
}
.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background-color: var(--bg-card);
}
.workspace-body {
    padding: 2rem;
}

/* Dropzone */
.tool-dropzone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    background-color: var(--bg-page);
    cursor: pointer;
    transition: var(--transition);
}
.tool-dropzone:hover {
    border-color: var(--primary);
    background-color: var(--primary-subtle);
}
.dropzone-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: var(--radius-full);
    background-color: var(--bg-card);
    color: var(--primary);
    margin-bottom: 1rem;
    box-shadow: var(--shadow-sm);
}
.dropzone-heading {
    font-size: 1.25rem;
    margin-bottom: 0.35rem;
}
.dropzone-sub {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.file-selection-info {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    background-color: var(--primary-subtle);
    border: 1px solid var(--primary);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    margin-top: 1rem;
}
.file-selection-info .file-icon {
    color: var(--primary);
}
.file-name {
    font-weight: 600;
    font-size: 0.9rem;
    display: block;
}
.file-size {
    font-size: 0.78rem;
    color: var(--text-muted);
}
.file-remove-btn {
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--text-muted);
    cursor: pointer;
    margin-left: auto;
}
.workspace-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-color);
}

/* Tool Instructions & Article Cards */
.tool-info-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}
.card-header-styled {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(0, 0, 0, 0.015);
}
.card-header-icon {
    color: var(--primary);
}
.card-title {
    font-size: 1.25rem;
}
.card-body-styled {
    padding: 1.5rem;
}
.instructions-content {
    line-height: 1.8;
    color: var(--text-main);
}
.article-content {
    line-height: 1.75;
}
.article-content h2, .article-content h3 {
    margin: 1.5rem 0 0.75rem 0;
}
.article-content p {
    margin-bottom: 1rem;
    color: var(--text-main);
}
.article-content ul, .article-content ol {
    margin: 0 0 1rem 1.5rem;
}
.article-content li {
    margin-bottom: 0.35rem;
}

/* Tool Sidebar */
.tool-sidebar-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}
.sidebar-card-title {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}
.sidebar-features-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}
.sidebar-features-list li {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 0.9rem;
    font-weight: 500;
}
.feature-icon {
    color: var(--success);
}
.related-tools-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.related-tool-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0.65rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-main);
    transition: var(--transition);
}
.related-tool-item:hover {
    background-color: var(--primary-subtle);
}
.rel-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
    background-color: var(--border-color);
    color: var(--primary);
    flex-shrink: 0;
}
.rel-name {
    font-weight: 600;
    font-size: 0.88rem;
    display: block;
}
.rel-runs {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ==============================================================
   Static Pages, FAQ, Contact & 404
   ============================================================== */
.static-page-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-sm);
    max-width: 900px;
    margin: 0 auto;
}
.page-meta-footer {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Contact Page Layout */
.contact-page-layout {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 2.5rem;
    max-width: 1080px;
    margin: 0 auto;
}
.contact-form-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
}
.contact-card-title {
    font-size: 1.6rem;
    margin-bottom: 0.35rem;
}
.contact-card-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 2rem;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.contact-info-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}
.info-icon {
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 2px;
}
.contact-info-item h4 {
    font-size: 0.95rem;
    margin-bottom: 0.15rem;
}
.contact-info-item p {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin: 0;
}
.contact-faq-callout {
    background-color: var(--primary-subtle);
    border: 1px solid rgba(79, 70, 229, 0.2);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-top: 1.5rem;
}
.contact-faq-callout h4 {
    font-size: 1.05rem;
    margin-bottom: 0.35rem;
}
.contact-faq-callout p {
    font-size: 0.88rem;
    color: var(--text-muted);
}

/* FAQ Accordion */
.faq-container {
    max-width: 820px;
    margin: 0 auto;
}
.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    margin-bottom: 3rem;
}
.faq-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}
.faq-item.active {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}
.faq-question {
    width: 100%;
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.05rem;
    font-weight: 600;
    font-family: inherit;
    color: var(--text-main);
    text-align: left;
}
.faq-icon {
    color: var(--text-muted);
    transition: transform 0.2s ease;
}
.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--primary);
}
.faq-answer {
    padding: 0 1.5rem 1.25rem 1.5rem;
    color: var(--text-muted);
    line-height: 1.7;
    font-size: 0.95rem;
}
.faq-help-box {
    text-align: center;
    background: linear-gradient(135deg, var(--bg-card), var(--primary-subtle));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
}
.faq-help-box h3 {
    margin-bottom: 0.35rem;
}
.faq-help-box p {
    color: var(--text-muted);
    margin-bottom: 1.25rem;
}

/* 404 Page */
.error-page-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 4rem 2rem;
    text-align: center;
    max-width: 650px;
    margin: 2rem auto;
    box-shadow: var(--shadow-md);
}
.error-badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    border-radius: var(--radius-full);
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}
.error-title {
    font-size: 2.25rem;
    margin-bottom: 0.75rem;
}
.error-description {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 2rem;
}
.error-search-box {
    max-width: 450px;
    margin: 0 auto 2rem auto;
}
.error-search-form {
    display: flex;
    gap: 0.5rem;
}
.error-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

/* ==============================================================
   Flash Alerts & Advertisements
   ============================================================== */
.flash-messages-container {
    position: fixed;
    top: 85px;
    right: 1.5rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 420px;
}
.flash-alert {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.85rem 1.25rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    font-size: 0.9rem;
    font-weight: 500;
    animation: slideInFlash 0.25s ease-out;
}
@keyframes slideInFlash {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}
.flash-success {
    background-color: #ecfdf5;
    border: 1px solid #6ee7b7;
    color: #065f46;
}
.flash-error {
    background-color: #fef2f2;
    border: 1px solid #fca5a5;
    color: #991b1b;
}
.flash-warning {
    background-color: #fffbeb;
    border: 1px solid #fde68a;
    color: #92400e;
}
.flash-info {
    background-color: #eff6ff;
    border: 1px solid #93c5fd;
    color: #1e40af;
}
.flash-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    margin-left: auto;
    color: inherit;
    line-height: 1;
}

/* Advertisement Units */
.ad-container {
    width: 100%;
    margin: 1.5rem 0;
    text-align: center;
}
.ad-placeholder-box {
    background-color: var(--bg-card);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: center;
}

/* ==============================================================
   Footer
   ============================================================== */
.site-footer {
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 4.5rem 0 2rem 0;
    margin-top: auto;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    margin-bottom: 1rem;
}
.footer-tagline {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 1.25rem;
    max-width: 320px;
}
.footer-social-links {
    display: flex;
    gap: 0.75rem;
}
.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background-color: var(--bg-page);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    transition: var(--transition);
}
.social-link:hover {
    color: var(--primary);
    border-color: var(--primary);
}
.footer-heading {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: var(--text-main);
}
.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}
.footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-decoration: none;
    transition: var(--transition);
}
.footer-links a:hover {
    color: var(--primary);
}
.footer-view-all {
    font-weight: 600;
    color: var(--primary) !important;
}
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}
.copyright-text {
    font-size: 0.85rem;
    color: var(--text-muted);
}
.footer-bottom-badges {
    display: flex;
    gap: 0.75rem;
}
.badge-pill {
    font-size: 0.75rem;
    padding: 0.25rem 0.65rem;
    border-radius: var(--radius-full);
    background-color: var(--bg-page);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}

/* Quick Search Modal */
.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 99999;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 12vh;
}
.search-modal-backdrop {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
}
.search-modal-box {
    position: relative;
    width: 100%;
    max-width: 640px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    animation: fadeInModal 0.2s ease-out;
}
@keyframes fadeInModal {
    from { opacity: 0; transform: scale(0.96); }
    to { opacity: 1; transform: scale(1); }
}
.search-modal-input-wrap {
    display: flex;
    align-items: center;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
}
.search-input-icon {
    color: var(--text-muted);
    margin-right: 0.75rem;
}
.search-modal-input-wrap input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 1.15rem;
    font-family: inherit;
    color: var(--text-main);
    outline: none;
}
.search-modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    line-height: 1;
}
.search-modal-results {
    max-height: 380px;
    overflow-y: auto;
    padding: 0.5rem;
}
.search-hint {
    padding: 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}
.search-modal-footer {
    padding: 0.65rem 1.25rem;
    background-color: var(--bg-page);
    border-top: 1px solid var(--border-color);
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
}
.search-modal-footer code {
    background-color: var(--border-color);
    padding: 0.1rem 0.35rem;
    border-radius: 4px;
}

/* ==============================================================
   Responsive Styles
   ============================================================== */
@media (max-width: 1024px) {
    .tools-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    .tool-main-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.25rem;
    }
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .categories-grid {
        grid-template-columns: 1fr;
    }
    .trust-features-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .contact-page-layout {
        grid-template-columns: 1fr;
    }
    .header-nav {
        display: none;
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--bg-card);
        padding: 1.5rem;
        flex-direction: column;
        align-items: flex-start;
        overflow-y: auto;
    }
    .header-nav.is-open {
        display: flex;
    }
    .nav-list {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }
    .nav-item {
        width: 100%;
    }
    .nav-link {
        width: 100%;
        padding: 0.75rem 0;
        font-size: 1.1rem;
    }
    .dropdown-panel {
        position: static;
        width: 100%;
        box-shadow: none;
        padding: 0.5rem 0;
        border: none;
    }
    .dropdown-grid {
        grid-template-columns: 1fr;
    }
    .mobile-menu-toggle {
        display: flex;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 520px) {
    .tools-grid {
        grid-template-columns: 1fr;
    }
    .tool-title-row {
        flex-direction: column;
        align-items: flex-start;
    }
    .tool-header-left {
        flex-direction: column;
        align-items: flex-start;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
}