/* ==========================================
   VaidyaAI Landing Page Styles
   ========================================== */

:root {
    --primary: #667eea;
    --primary-dark: #5a67d8;
    --secondary: #764ba2;
    --accent: #f093fb;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-tertiary: #edf2f7;
    --border-color: #e2e8f0;
    --success: #48bb78;
    --warning: #ed8936;
    --error: #f56565;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    background: var(--bg-primary);
    padding-top: 60px; /* Space for launch banner */
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background: var(--gradient);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
}

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

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

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 60px; /* Position below launch banner */
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 2rem;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 3px;
    transition: all 0.3s;
}

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

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

.hero-content h1 {
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: 15px;
    margin-bottom: 40px;
}

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

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

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Dashboard Preview */
.dashboard-preview {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: transform 0.3s ease;
}

.dashboard-preview:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.preview-header {
    background: var(--bg-tertiary);
    padding: 12px 15px;
    display: flex;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #28ca42; }

.preview-content {
    display: grid;
    grid-template-columns: 180px 1fr;
    min-height: 300px;
}

.preview-sidebar {
    background: var(--bg-secondary);
    padding: 15px;
}

.sidebar-item {
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.sidebar-item.active {
    background: var(--gradient);
    color: white;
}

.preview-main {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.preview-card {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: var(--radius-md);
}

.preview-card h4 {
    margin-bottom: 10px;
    font-size: 1rem;
}

.mini-stats {
    display: flex;
    gap: 20px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.ai-card {
    background: var(--gradient);
    color: white;
}

.ai-card p {
    opacity: 0.9;
    font-size: 0.9rem;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-top: 10px;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-secondary);
}

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

.steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.step {
    text-align: center;
    padding: 40px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    flex: 1;
    max-width: 300px;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    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 {
    margin-bottom: 10px;
}

.step p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.step-arrow {
    font-size: 2rem;
    color: var(--primary);
}

/* Pricing Section */
.pricing {
    padding: 100px 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.pricing-card {
    background: white;
    border-radius: var(--radius-lg);
    border: 2px solid var(--border-color);
    padding: 40px 30px;
    position: relative;
    transition: all 0.3s ease;
}

.pricing-card:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
    border-color: var(--primary);
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.featured-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 25px;
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.pricing-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.pricing-price {
    text-align: center;
    margin-bottom: 30px;
}

.currency {
    font-size: 1.5rem;
    font-weight: 600;
    vertical-align: top;
}

.amount {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1;
}

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

.pricing-features {
    list-style: none;
    margin-bottom: 30px;
}

.pricing-features li {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
}

.pricing-features li:last-child {
    border-bottom: none;
}

/* Testimonials */
.testimonials {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: white;
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.testimonial-content {
    margin-bottom: 25px;
}

.testimonial-content p {
    font-style: italic;
    color: var(--text-secondary);
    line-height: 1.8;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.author-info h4 {
    font-size: 1rem;
    margin-bottom: 2px;
}

.author-info p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Signup Section */
.signup-section {
    padding: 100px 0;
}

.signup-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    background: var(--bg-secondary);
    padding: 60px;
    border-radius: var(--radius-lg);
}

.signup-info h2 {
    margin-bottom: 15px;
}

.signup-info > p {
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.signup-benefits {
    list-style: none;
}

.signup-benefits li {
    padding: 10px 0;
    font-size: 1.1rem;
}

.signup-form-container {
    background: white;
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

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

.signup-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 0.95rem;
}

.signup-form input,
.signup-form select {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.signup-form input:focus,
.signup-form select:focus {
    outline: none;
    border-color: var(--primary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.checkbox-group label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-weight: 400;
    font-size: 0.9rem;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-top: 3px;
}

.checkbox-group a {
    color: var(--primary);
}

.form-note {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 15px;
}

/* FAQ Section */
.faq {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.faq-item {
    background: white;
    padding: 30px;
    border-radius: var(--radius-md);
}

.faq-item h3 {
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.faq-item p {
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 80px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 50px;
}

.footer-brand p {
    color: rgba(255,255,255,0.7);
    margin-top: 15px;
}

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

.footer-links h4 {
    margin-bottom: 20px;
    font-size: 1rem;
}

.footer-links a {
    display: block;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    padding: 8px 0;
    transition: color 0.3s;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    text-align: center;
    color: rgba(255,255,255,0.5);
}

/* Responsive Design */
@media (max-width: 1024px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    
    .features-grid,
    .pricing-grid,
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-card.featured {
        transform: scale(1);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero .container,
    .signup-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-image {
        display: none;
    }
    
    .features-grid,
    .pricing-grid,
    .testimonials-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .steps {
        flex-direction: column;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .signup-container {
        padding: 30px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .signup-form-container {
        padding: 25px;
    }
}