/* InventoryPro - Vyapar-style Landing Page Styles */
:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-accent: #0ea5e9;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-bg: #f8fafc;
    --color-bg-alt: #f1f5f9;
    --color-white: #ffffff;
    --color-border: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --radius: 12px;
    --radius-lg: 16px;
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    line-height: 1.6;
    background: var(--color-bg);
}

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

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    padding: 16px 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--color-text);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.35rem;
}

.logo-icon {
    font-size: 1.75rem;
}

.main-nav {
    display: flex;
    gap: 28px;
}

.main-nav a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

.header-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--color-white) !important;
}

.btn-outline-light {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

.btn-outline-light:hover {
    background: rgba(255,255,255,0.2);
}

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

.btn-text:hover {
    color: var(--color-primary) !important;
}

/* Hero */
.hero {
    padding: 80px 0 100px;
    text-align: center;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    color: var(--color-white);
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    max-width: 800px;
    margin: 0 auto 24px;
}

.hero-subtitle {
    font-size: 1.15rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 40px;
    color: #cbd5e1;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Feature Sections */
.feature-section {
    padding: 80px 0;
}

.feature-section.alt-bg {
    background: var(--color-bg-alt);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    color: var(--color-text);
}

.section-intro {
    text-align: center;
    color: var(--color-text-muted);
    max-width: 700px;
    margin: 0 auto 48px;
    font-size: 1.05rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--color-white);
    padding: 28px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.feature-section.alt-bg .feature-card {
    background: var(--color-white);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    display: block;
}

.feature-card h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--color-text);
}

.feature-card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* CTA Section */
.cta-section {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
}

.cta-section h2 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.cta-section p {
    opacity: 0.95;
    margin-bottom: 32px;
    font-size: 1.1rem;
}

/* Footer */
.site-footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 60px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo-text {
    color: var(--color-white);
    font-family: var(--font-heading);
    font-weight: 700;
}

.footer-brand p {
    margin-top: 12px;
    font-size: 0.95rem;
}

.footer-links h4 {
    color: var(--color-white);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-links a {
    display: block;
    color: #94a3b8;
    text-decoration: none;
    margin-bottom: 10px;
    font-size: 0.95rem;
}

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid #334155;
    text-align: center;
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .main-nav {
        display: none;
    }

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

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