/* =========================================================================
   GLOBAL DESIGN SYSTEM — CLEAN WHITE SAAS
   FinanceClean AI
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg: #ffffff;
    --bg-light: #f8f9fa;
    --surface: #ffffff;
    --border: #e5e7eb;
    --border-light: #f0f0f0;
    --primary: #111827;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --text: #1f2937;
    --text-muted: #6b7280;
    --text-light: #9ca3af;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 20px 40px -12px rgba(0,0,0,0.1);
    --container: 1200px;
    --section-padding: 80px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; height: auto; display: block; }

/* --- TYPOGRAPHY --- */
h1, h2, h3, h4, h5, h6 {
    color: var(--primary);
    line-height: 1.2;
    font-weight: 700;
}

.page-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, #1f2937 0%, #6b7280 50%, #1f2937 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.page-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    font-weight: 400;
    max-width: 600px;
}

/* --- LAYOUT --- */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: var(--section-padding) 24px;
}

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
}

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

/* --- NAVIGATION --- */
.nav {
    max-width: var(--container);
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.nav-wrap {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
}

.logo {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo img { height: 22px; }

.nav-items {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-items a {
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.2s;
}

.nav-items a:hover, .nav-items a.active {
    color: var(--primary);
}

/* --- BUTTONS --- */
.btn-primary {
    display: inline-block;
    background: var(--primary);
    color: #fff !important;
    padding: 10px 20px;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.btn-primary:hover {
    background: #374151;
    transform: translateY(-1px);
    color: #fff !important;
}

.btn-large {
    padding: 14px 32px;
    font-size: 1rem;
}

.btn-outline {
    display: inline-block;
    background: transparent;
    color: var(--primary) !important;
    padding: 10px 20px;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 600;
    border: 1px solid var(--border);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-outline:hover {
    background: var(--bg-light);
    border-color: var(--text-light);
}

.btn-full {
    display: block;
    width: 100%;
    text-align: center;
    padding: 12px;
}

/* --- PAGE HEADER (used by secondary pages) --- */
.page-header {
    text-align: center;
    padding: 120px 24px 40px;
    max-width: var(--container);
    margin: 0 auto;
}

.page-header .page-subtitle,
.page-header p {
    margin: 0 auto;
}

.last-updated {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 0.5rem;
}

/* --- HERO (homepage) --- */
.hero {
    text-align: center;
    padding: 140px 24px 0;
    max-width: var(--container);
    margin: 0 auto;
}

.hero .page-title {
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    margin-bottom: 1.25rem;
}

.hero .page-subtitle {
    margin: 0 auto 2.5rem;
}

.hero-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 4rem;
}

.hero-image {
    max-width: 1000px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}

.hero-image img {
    width: 100%;
    display: block;
}

/* --- FEATURE GRID --- */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.feature-card {
    padding: 2rem 0;
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.925rem;
    line-height: 1.65;
}

/* --- SECTION DIVIDER --- */
.section-label {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--accent);
    margin-bottom: 1rem;
    display: block;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--primary);
    margin-bottom: 1rem;
}

.section-description {
    color: var(--text-muted);
    font-size: 1.05rem;
    max-width: 600px;
}

/* --- PRODUCT CARD (wide image + text) --- */
.product-card {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-light);
}

.product-card img {
    width: 100%;
    display: block;
}

.product-card-body {
    padding: 2.5rem;
}

.product-card-body h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.product-card-body p {
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 550px;
    line-height: 1.65;
}

/* --- PRICING --- */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.pricing-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    position: relative;
    transition: box-shadow 0.2s;
}

.pricing-card:hover { box-shadow: var(--shadow); }

.pricing-card.popular {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 16px;
    border-radius: 99px;
}

.plan-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.plan-price {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 0.5rem;
}

.plan-price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-muted);
}

.plan-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.plan-features {
    list-style: none;
    padding: 0;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    color: var(--text);
    line-height: 2;
}

.plan-features svg {
    width: 16px;
    height: 16px;
    vertical-align: middle;
    margin-right: 8px;
    color: #10b981;
}

/* --- LEGAL PAGES --- */
.legal-content h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 2.5rem 0 0.75rem;
    color: var(--primary);
}

.legal-content h2:first-child { margin-top: 0; }

.legal-content p {
    color: var(--text-muted);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.legal-content ul {
    color: var(--text-muted);
    padding-left: 1.5rem;
    margin-bottom: 1rem;
    line-height: 1.8;
}

/* --- CONTENT BLOCKS (about page) --- */
.content-block {
    margin-bottom: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid var(--border-light);
}

.content-block:last-child { border-bottom: none; }

.content-block h2 {
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary);
}

.content-block h2 svg { color: var(--accent); flex-shrink: 0; }

.content-block p {
    color: var(--text-muted);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.highlight-quote {
    background: var(--bg-light);
    border-left: 3px solid var(--accent);
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
    font-style: italic;
    color: var(--text);
    border-radius: 0 var(--radius) var(--radius) 0;
}

/* --- CONTACT PAGE --- */
.contact-info {
    margin-bottom: 3rem;
}

.contact-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.contact-info > p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.info-item svg { color: var(--accent); flex-shrink: 0; }

.social-links { margin-top: 1.5rem; }

.social-links a {
    color: var(--text-muted);
    transition: color 0.2s;
}

.social-links a:hover { color: var(--accent); }

/* --- FORMS --- */
.form-group { margin-bottom: 1.25rem; }

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.1);
}

textarea.form-control { min-height: 120px; resize: vertical; }

/* --- TOOL PAGE --- */
.tool-header {
    text-align: center;
    padding: 120px 24px 40px;
}

.tool-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.tool-header p {
    color: var(--text-muted);
    font-size: 1rem;
}

.iframe-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

.iframe-container iframe {
    width: 100%;
    height: 700px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.instructions-section {
    max-width: var(--container);
    margin: 0 auto;
    padding: var(--section-padding) 24px;
}

.instructions-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.instruction-step {
    display: flex;
    gap: 1.25rem;
    margin-bottom: 1.75rem;
    align-items: flex-start;
}

.step-icon {
    width: 36px;
    height: 36px;
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    flex-shrink: 0;
    color: var(--accent);
}

.step-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
}

.step-content p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* --- FOOTER --- */
footer {
    border-top: 1px solid var(--border-light);
    padding: 2.5rem 24px;
    max-width: var(--container);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-light);
}

.f-links { display: flex; gap: 1.5rem; }

.f-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* --- RESPONSIVE --- */
@media (max-width: 768px) {
    :root { --section-padding: 48px; }
    .nav-items { display: none; }
    .feature-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .hero { padding-top: 100px; }
    .page-header { padding-top: 100px; }
    .tool-header { padding-top: 100px; }
    footer { flex-direction: column; gap: 1rem; text-align: center; }
    .hero-actions { flex-direction: column; align-items: center; }
}