/* ═══════════════════════════════════════
   SEO Article Generator — Web Design System
   ═══════════════════════════════════════ */

:root {
    --primary: #6C5CE7;
    --primary-dark: #5A4BD1;
    --primary-light: #A29BFE;
    --accent: #00D2D3;
    --success: #00B894;
    --warning: #FDCB6E;
    --danger: #E17055;
    --dark: #0F0F23;
    --dark-2: #1A1A2E;
    --dark-3: #16213E;
    --gray-50: #F8F9FA;
    --gray-100: #F1F3F5;
    --gray-200: #E9ECEF;
    --gray-300: #DEE2E6;
    --gray-400: #ADB5BD;
    --gray-500: #6C757D;
    --gray-700: #495057;
    --gray-900: #212529;
    --white: #ffffff;
    --radius: 12px;
    --radius-lg: 16px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --transition: all 0.25s ease;
    --font: 'Inter', -apple-system, sans-serif;
}

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

body {
    font-family: var(--font);
    color: var(--gray-900);
    line-height: 1.6;
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-sm {
    max-width: 800px;
}

/* ── Nav ─────────────────────────────── */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(15, 15, 35, 0.75);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: var(--transition);
}

.nav-scrolled {
    background: rgba(15, 15, 35, 0.95);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--white);
    font-weight: 700;
    font-size: 18px;
}

.nav-logo-img {
    height: 56px;
    width: 56px;
    display: inline-block;
    vertical-align: middle;
}

.lang-toggle {
    cursor: pointer;
    font-weight: 700;
    letter-spacing: 1px;
    font-size: 12px;
    padding: 6px 12px;
    border-radius: 6px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: rgba(255, 255, 255, 0.8);
    transition: all 0.2s;
}

.lang-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
}

.auth-logo {
    display: block;
    width: 96px;
    height: 96px;
    margin: 0 auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.75);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--white);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--white);
    font-size: 24px;
    cursor: pointer;
}

/* ── Buttons ─────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 15px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font);
    text-decoration: none;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
    border-radius: 8px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 17px;
}

.btn-full {
    width: 100%;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--gray-300);
    color: var(--gray-700);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-outline-white {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: var(--white);
}

.btn-outline-white:hover {
    background: rgba(255, 255, 255, 0.1);
}

.btn-ghost {
    background: transparent;
    color: var(--gray-500);
}

.btn-ghost:hover {
    color: var(--primary);
}

.btn-success {
    background: var(--success);
    color: var(--white);
}

.btn-danger {
    background: var(--danger);
    color: var(--white);
}

/* ── Hero ────────────────────────────── */
.hero {
    position: relative;
    padding: 140px 0 100px;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 50%, #0A3D62 100%);
    color: var(--white);
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.3) 0%, transparent 70%);
    top: -100px;
    right: -100px;
    pointer-events: none;
}

.hero-content {
    max-width: 680px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    padding: 6px 16px;
    border-radius: 50px;
    background: rgba(108, 92, 231, 0.2);
    border: 1px solid rgba(108, 92, 231, 0.3);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--primary-light);
}

.hero h1 {
    font-size: clamp(36px, 5vw, 56px);
    line-height: 1.1;
    font-weight: 800;
    margin-bottom: 20px;
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 32px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 12px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 40px;
}

.hero-stat {
    display: flex;
    flex-direction: column;
}

.hero-stat strong {
    font-size: 15px;
}

.hero-stat span {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

/* ── Sections ────────────────────────── */
.section {
    padding: 100px 0;
}

.section-dark {
    background: var(--gray-50);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: clamp(28px, 3vw, 40px);
    font-weight: 800;
    margin-bottom: 12px;
}

.section-header p {
    font-size: 17px;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
}

.section-badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 50px;
    background: rgba(108, 92, 231, 0.1);
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

/* ── Features Grid ───────────────────── */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    background: var(--white);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.feature-icon {
    font-size: 36px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--gray-500);
    font-size: 15px;
}

/* ── Steps Grid ──────────────────────── */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.step-card {
    text-align: center;
    padding: 40px 24px;
}

.step-number {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    margin: 0 auto 20px;
    background: var(--primary);
    color: var(--white);
    font-size: 24px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.step-card p {
    color: var(--gray-500);
    font-size: 15px;
}

/* ── Pricing ─────────────────────────── */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    align-items: start;
}

.pricing-card {
    padding: 32px;
    border-radius: var(--radius-lg);
    background: var(--white);
    border: 2px solid var(--gray-200);
    transition: var(--transition);
    position: relative;
}

.pricing-card-popular {
    border-color: var(--primary);
    transform: scale(1.03);
}

.pricing-badge {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: var(--white);
    padding: 4px 16px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.pricing-header {
    text-align: center;
    margin-bottom: 24px;
}

.pricing-header h3 {
    font-size: 22px;
    font-weight: 800;
}

.pricing-price {
    margin: 12px 0 8px;
}

.price-amount {
    font-size: 48px;
    font-weight: 800;
}

.price-period {
    font-size: 16px;
    color: var(--gray-500);
}

.pricing-header p {
    color: var(--gray-500);
    font-size: 14px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 24px;
}

.pricing-features li {
    padding: 8px 0;
    font-size: 15px;
    border-bottom: 1px solid var(--gray-100);
}

/* ── FAQ ─────────────────────────────── */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.faq-item {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
}

.faq-q {
    width: 100%;
    padding: 18px 20px;
    background: var(--white);
    border: none;
    font-size: 16px;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font);
}

.faq-arrow {
    transition: var(--transition);
}

.faq-item.active .faq-arrow {
    transform: rotate(180deg);
}

.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-a {
    max-height: 200px;
}

.faq-a p {
    padding: 0 20px 18px;
    color: var(--gray-500);
    font-size: 15px;
}

/* ── CTA ─────────────────────────────── */
.section-cta {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 100%);
    color: var(--white);
    text-align: center;
}

.section-cta h2 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 12px;
}

.section-cta p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 17px;
    margin-bottom: 32px;
}

/* ── Footer ──────────────────────────── */
.footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.6);
    padding: 60px 0 24px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 40px;
}

.footer-brand span {
    color: var(--white);
    font-weight: 700;
    font-size: 18px;
}

.footer-brand p {
    margin-top: 8px;
    font-size: 14px;
}

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

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.footer-links a:hover {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    font-size: 13px;
}

/* ── Auth Pages ──────────────────────── */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 50%, #0A3D62 100%);
    padding: 24px;
}

.auth-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 48px;
    width: 100%;
    max-width: 440px;
    box-shadow: var(--shadow-lg);
}

.auth-card h1 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 8px;
    text-align: center;
}

.auth-card .auth-sub {
    color: var(--gray-500);
    text-align: center;
    margin-bottom: 32px;
    font-size: 15px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--gray-700);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-200);
    border-radius: 10px;
    font-size: 15px;
    font-family: var(--font);
    transition: var(--transition);
    outline: none;
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.15);
}

.auth-switch {
    text-align: center;
    margin-top: 24px;
    font-size: 14px;
    color: var(--gray-500);
}

.auth-switch a {
    font-weight: 600;
}

.auth-error {
    background: #FFF5F5;
    border: 1px solid var(--danger);
    color: var(--danger);
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 16px;
    display: none;
}

/* ── Dashboard ───────────────────────── */
.dashboard {
    min-height: 100vh;
    background: var(--gray-50);
    padding-top: 80px;
}

.dash-header {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 100%);
    color: var(--white);
    padding: 40px 0;
    margin-top: -80px;
    padding-top: 120px;
}

.dash-header h1 {
    font-size: 28px;
    font-weight: 800;
}

.dash-header p {
    color: rgba(255, 255, 255, 0.6);
}

.dash-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    padding: 32px 0;
}

.dash-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 32px;
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow);
}

.dash-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--gray-700);
    display: flex;
    align-items: center;
    gap: 8px;
}

.dash-stat {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
}

.dash-stat-label {
    font-size: 14px;
    color: var(--gray-500);
}

.license-box {
    background: var(--gray-50);
    padding: 14px 18px;
    border-radius: 10px;
    font-family: monospace;
    font-size: 14px;
    word-break: break-all;
    border: 1px dashed var(--gray-300);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

.license-box button {
    background: var(--primary);
    color: var(--white);
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    white-space: nowrap;
}

.plan-badge {
    display: inline-flex;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.plan-free {
    background: var(--gray-100);
    color: var(--gray-700);
}

.plan-starter {
    background: #E3F2FD;
    color: #1565C0;
}

.plan-pro {
    background: #F3E5F5;
    color: #7B1FA2;
}

.plan-agency {
    background: #FFF3E0;
    color: #E65100;
}

/* ── Admin ───────────────────────────── */
.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.admin-stat-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--gray-200);
    text-align: center;
}

.admin-stat-card .stat-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
}

.admin-stat-card .stat-label {
    font-size: 13px;
    color: var(--gray-500);
    margin-top: 4px;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--gray-200);
}

.data-table th {
    background: var(--gray-50);
    padding: 12px 16px;
    font-size: 13px;
    font-weight: 700;
    color: var(--gray-500);
    text-align: left;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.data-table td {
    padding: 12px 16px;
    font-size: 14px;
    border-top: 1px solid var(--gray-100);
}

.data-table tr:hover {
    background: var(--gray-50);
}

/* ── Utilities ───────────────────────── */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-2 {
    margin-top: 16px;
}

.mt-4 {
    margin-top: 32px;
}

.mb-2 {
    margin-bottom: 16px;
}

/* ── Spinner ─────────────────────────── */
.spinner {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--white);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ── Responsive ──────────────────────── */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--dark);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-toggle {
        display: block;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

    .steps-grid {
        grid-template-columns: 1fr;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    .pricing-card-popular {
        transform: none;
    }

    .footer-inner {
        flex-direction: column;
        gap: 24px;
    }

    .auth-card {
        padding: 32px 24px;
    }

    .dash-grid {
        grid-template-columns: 1fr;
    }
}