/**
 * CardMaker Landing Page Styles
 */

/* ========================================
   Variables
   ======================================== */
:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: #e0e7ff;
    
    --text: #1f2937;
    --text-muted: #6b7280;
    --text-light: #9ca3af;
    
    --bg: #ffffff;
    --bg-alt: #f9fafb;
    --bg-dark: #111827;
    
    --border: #e5e7eb;
    
    --radius: 12px;
    --radius-sm: 8px;
    
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* ========================================
   Reset & Base
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}

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

/* ========================================
   Header
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    font-size: 1.5rem;
}

.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background: white;
    color: var(--text);
    border: 2px solid var(--border);
}

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

.btn-lg {
    padding: 16px 32px;
    font-size: 1.125rem;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--text) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.hero-note {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* Preview Card */
.hero-preview {
    display: flex;
    justify-content: center;
    perspective: 1000px;
}

.preview-card {
    width: 340px;
    height: 200px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 24px;
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform 0.3s;
    animation: float 6s ease-in-out infinite;
}

.preview-card:hover {
    transform: rotateY(0) rotateX(0);
}

@keyframes float {
    0%, 100% { transform: rotateY(-5deg) rotateX(5deg) translateY(0); }
    50% { transform: rotateY(-5deg) rotateX(5deg) translateY(-10px); }
}

.preview-card-content {
    color: white;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.preview-name {
    font-size: 1.5rem;
    font-weight: 700;
}

.preview-title {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-bottom: 4px;
}

.preview-company {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: auto;
}

.preview-contact {
    display: flex;
    gap: 16px;
    font-size: 0.8125rem;
    opacity: 0.9;
}

.preview-qr {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ========================================
   Features Section
   ======================================== */
.features {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all 0.3s;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

/* ========================================
   How It Works
   ======================================== */
.how-it-works {
    padding: 100px 0;
    background: var(--bg-alt);
}

.steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 24px;
}

.step {
    flex: 1;
    max-width: 280px;
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.step p {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.step-arrow {
    font-size: 2rem;
    color: var(--text-light);
    padding-top: 15px;
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--primary) 0%, #764ba2 100%);
    color: white;
}

.cta h2 {
    font-size: 2.25rem;
    margin-bottom: 16px;
}

.cta p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 32px;
}

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

.cta .btn-primary:hover {
    background: var(--bg-alt);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: 60px 0 30px;
    background: var(--bg-dark);
    color: white;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .logo-text {
    color: white;
}

.footer-brand p {
    color: var(--text-light);
    margin-top: 8px;
}

.footer-links {
    display: flex;
    gap: 32px;
}

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

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

.footer-bottom {
    padding-top: 30px;
    text-align: center;
    color: var(--text-light);
    font-size: 0.875rem;
}

.privacy-note {
    margin-top: 8px;
    font-size: 0.8125rem;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 900px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero h1 {
        font-size: 2.25rem;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-actions {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-preview {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .steps {
        flex-direction: column;
        align-items: center;
    }
    
    .step-arrow {
        transform: rotate(90deg);
        padding: 0;
    }
}

@media (max-width: 600px) {
    .nav-link {
        display: none;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn-lg {
        width: 100%;
        justify-content: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 24px;
    }
}