/* ============================================================
   SecureLink Design System v2.0
   Shared CSS variables, navbar, footer, and utility classes
   ============================================================ */

/* ===== CSS Variables ===== */
:root {
    --primary-color: #0ea5e9;
    --primary-dark: #0284c7;
    --primary-light: #38bdf8;
    --accent-color: #8b5cf6;
    --accent-light: #a78bfa;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --bg-surface: #0f172a;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: rgba(148, 163, 184, 0.12);
    --border-light: rgba(148, 163, 184, 0.2);
    --glow-primary: rgba(14, 165, 233, 0.15);
    --glow-accent: rgba(139, 92, 246, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-family);
}

body {
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Dark Reader Compatibility ===== */
html[data-darkreader-mode] body,
html[data-darkreader-scheme="dark"] body {
    background: var(--bg-dark) !important;
    color: var(--text-primary) !important;
}
html[data-darkreader-mode] .card,
html[data-darkreader-scheme="dark"] .card,
html[data-darkreader-mode] .sl-card,
html[data-darkreader-scheme="dark"] .sl-card {
    background: var(--bg-card) !important;
    color: var(--text-primary) !important;
}
html[data-darkreader-mode] * {
    --darkreader-text--text-primary: #f1f5f9 !important;
    --darkreader-bg--bg-dark: #0f172a !important;
}

/* ===== Unified Navbar ===== */
.sl-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(20px) saturate(1.8);
    border-bottom: 1px solid var(--border-color);
    height: 68px;
    display: flex;
    align-items: center;
    padding: 0 24px;
    transition: background 0.3s;
}

.sl-navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
}

.sl-navbar-inner {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.sl-brand-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
}

.sl-brand-icon i {
    font-size: 18px;
    color: #fff;
}

.sl-brand-text {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.sl-nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.sl-nav-link {
    padding: 8px 16px;
    border-radius: 10px;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    color: var(--text-secondary);
    transition: all 0.25s;
    white-space: nowrap;
}

.sl-nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.06);
}

.sl-nav-link.active {
    color: var(--primary-color);
    background: rgba(14, 165, 233, 0.1);
}

.sl-nav-cta {
    padding: 8px 20px;
    border-radius: 10px;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    color: #fff;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    transition: all 0.3s;
    white-space: nowrap;
}

.sl-nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.3);
    color: #fff;
}

/* User badge in navbar */
.sl-user-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-color);
    transition: all 0.25s;
}

.sl-user-badge:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.sl-user-badge .tier-badge {
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 2px 8px;
    border-radius: 6px;
}

.tier-free { background: rgba(100, 116, 139, 0.2); color: #94a3b8; }
.tier-pro { background: rgba(14, 165, 233, 0.2); color: var(--primary-light); }
.tier-enterprise { background: rgba(139, 92, 246, 0.2); color: var(--accent-light); }

/* Mobile nav toggle */
.sl-nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border-light);
    color: var(--text-primary);
    padding: 7px 10px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 1.2rem;
}

@media (max-width: 768px) {
    .sl-nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .sl-nav-links {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 12px;
        gap: 4px;
        border-bottom: 1px solid var(--border-color);
    }
    .sl-nav-links.show {
        display: flex;
    }
    .sl-nav-link, .sl-nav-cta, .sl-user-badge {
        width: 100%;
        text-align: center;
        justify-content: center;
    }
    .sl-navbar-inner {
        position: relative;
    }
}

/* ===== Unified Footer ===== */
.sl-footer {
    border-top: 1px solid var(--border-color);
    padding: 48px 24px 32px;
    margin-top: 60px;
}

.sl-footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
}

.sl-footer-brand .sl-brand {
    margin-bottom: 12px;
}

.sl-footer-brand p {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.6;
}

.sl-footer-col h4 {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    margin-bottom: 18px;
}

.sl-footer-col a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    padding: 4px 0;
    transition: color 0.25s;
}

.sl-footer-col a:hover {
    color: var(--primary-color);
}

.sl-footer-bottom {
    max-width: 1100px;
    margin: 32px auto 0;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sl-footer-bottom p {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.sl-footer-bottom-links {
    display: flex;
    gap: 24px;
}

.sl-footer-bottom-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    transition: color 0.25s;
}

.sl-footer-bottom-links a:hover {
    color: var(--primary-color);
}

@media (max-width: 1024px) {
    .sl-footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .sl-footer-inner { grid-template-columns: 1fr; gap: 32px; }
    .sl-footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}

/* ===== Cards ===== */
.sl-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 32px;
    transition: all 0.3s ease;
}

.sl-card:hover {
    border-color: rgba(14, 165, 233, 0.2);
}

.sl-card-elevated {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 60px rgba(14, 165, 233, 0.04);
}

/* ===== Buttons ===== */
.sl-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.sl-btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: #fff;
}

.sl-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(14, 165, 233, 0.35);
    color: #fff;
}

.sl-btn-outline {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-light);
    color: var(--text-primary);
}

.sl-btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.sl-btn-lg {
    padding: 16px 36px;
    font-size: 1rem;
    border-radius: var(--radius-lg);
}

/* ===== Section Headers ===== */
.sl-section-header {
    text-align: center;
    margin-bottom: 56px;
}

.sl-section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--primary-color);
    margin-bottom: 14px;
}

.sl-section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    margin-bottom: 14px;
}

.sl-section-header p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto;
}

/* ===== Page wrapper (accounts for navbar) ===== */
.sl-page {
    padding-top: 68px;
    min-height: 100vh;
}

.sl-page-centered {
    max-width: 1200px;
    margin: 0 auto;
    padding: 48px 24px;
}

/* ===== Background effects ===== */
.sl-bg-gradient {
    background-image:
        radial-gradient(ellipse at top left, var(--glow-primary) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, var(--glow-accent) 0%, transparent 50%);
}

/* ===== Scroll animations ===== */
.sl-fade-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.sl-fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Badges ===== */
.sl-badge {
    display: inline-flex;
    align-items: center;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 3px 10px;
    border-radius: 6px;
}

.sl-badge-new { background: rgba(16, 185, 129, 0.15); color: var(--success-color); }
.sl-badge-pro { background: rgba(14, 165, 233, 0.15); color: var(--primary-color); }
.sl-badge-enterprise { background: rgba(139, 92, 246, 0.15); color: var(--accent-color); }
.sl-badge-free { background: rgba(100, 116, 139, 0.15); color: var(--text-secondary); }

/* ===== Form Controls (dark theme) ===== */
.sl-input {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    padding: 12px 16px;
    font-size: 0.95rem;
    width: 100%;
    transition: all 0.3s ease;
}

.sl-input:focus {
    outline: none;
    background: rgba(15, 23, 42, 0.95);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.12);
}

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

/* ===== Utility Classes ===== */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.text-muted-sl { color: var(--text-muted) !important; }
.text-secondary-sl { color: var(--text-secondary) !important; }

/* ===== Animated Background ===== */
.bg-grid {
    position: fixed;
    inset: 0;
    z-index: 0;
    background-image:
        linear-gradient(rgba(148, 163, 184, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148, 163, 184, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.bg-glow {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse 80% 50% at 20% 10%, var(--glow-primary) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 80% 80%, var(--glow-accent) 0%, transparent 60%);
}

/* ===== Scroll Animations ===== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Scroll reveal init ===== */
</content>
</invoke>