/**
 * StyleNexus Landing Page Styles
 * Mobile-first responsive design
 */

/* CSS Variables */
:root {
    --primary: #8B5CF6;
    --primary-dark: #7C3AED;
    --primary-light: #A78BFA;
    --secondary: #EC4899;
    --dark: #1F2937;
    --gray-900: #111827;
    --gray-800: #1F2937;
    --gray-700: #374151;
    --gray-600: #4B5563;
    --gray-500: #6B7280;
    --gray-400: #9CA3AF;
    --gray-300: #D1D5DB;
    --gray-200: #E5E7EB;
    --gray-100: #F3F4F6;
    --gray-50: #F9FAFB;
    --white: #FFFFFF;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --radius: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

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

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

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

.btn-ghost {
    background: transparent;
    color: var(--gray-700);
}

.btn-ghost:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

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

.btn-block {
    width: 100%;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 16px 20px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 20px;
    color: var(--gray-900);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 700;
}

.nav-links {
    display: none;
    gap: 32px;
}

.nav-links a {
    color: var(--gray-600);
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--gray-900);
}

.nav-actions {
    display: none;
    gap: 12px;
}

.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    border-radius: 1px;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
    .nav-actions {
        display: flex;
    }
    .nav-toggle {
        display: none;
    }
}

/* Hero Section */
.hero {
    padding: 120px 20px 60px;
    background: linear-gradient(180deg, var(--gray-50) 0%, var(--white) 100%);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    gap: 40px;
    align-items: center;
}

.hero-badge {
    display: inline-block;
    padding: 6px 14px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    font-size: 13px;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 16px;
}

.hero-title {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: 20px;
}

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

.hero-subtitle {
    font-size: 18px;
    color: var(--gray-600);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 16px;
}

.hero-note {
    font-size: 14px;
    color: var(--gray-500);
}

.hero-mockup {
    display: none;
}

@media (min-width: 768px) {
    .hero {
        padding: 140px 20px 80px;
    }
    .hero-container {
        grid-template-columns: 1fr 1fr;
    }
    .hero-title {
        font-size: 48px;
    }
    .hero-mockup {
        display: block;
    }
    .mockup-phone {
        width: 280px;
        height: 560px;
        background: var(--gray-900);
        border-radius: 40px;
        padding: 12px;
        margin: 0 auto;
        box-shadow: var(--shadow-xl);
    }
    .mockup-screen {
        width: 100%;
        height: 100%;
        background: var(--white);
        border-radius: 32px;
        overflow: hidden;
        display: flex;
        flex-direction: column;
    }
    .mockup-header {
        height: 80px;
        background: linear-gradient(135deg, var(--primary), var(--secondary));
    }
    .mockup-gallery {
        flex: 1;
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 4px;
        padding: 8px;
    }
    .mockup-gallery::before,
    .mockup-gallery::after {
        content: '';
        background: var(--gray-200);
        border-radius: 4px;
    }
    .mockup-cta {
        height: 60px;
        background: var(--primary);
        margin: 8px;
        border-radius: 12px;
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 56px;
    }
}

/* Sections */
section {
    padding: 60px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-header h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.section-header p {
    font-size: 18px;
    color: var(--gray-600);
}

@media (min-width: 768px) {
    section {
        padding: 80px 0;
    }
    .section-header h2 {
        font-size: 40px;
    }
}

/* Features */
.features {
    background: var(--white);
}

.features-grid {
    display: grid;
    gap: 24px;
}

.feature-card {
    background: var(--gray-50);
    padding: 32px;
    border-radius: var(--radius-lg);
    transition: all 0.2s;
}

.feature-card:hover {
    background: var(--white);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--white);
}

.feature-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--gray-600);
}

.features-more {
    text-align: center;
    margin-top: 40px;
    padding: 24px;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
}

.features-more p {
    color: var(--gray-600);
    font-weight: 500;
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Pricing */
.pricing {
    background: var(--gray-50);
}

.pricing-grid {
    display: grid;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

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

.pricing-card.featured {
    border-color: var(--primary);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: var(--white);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.pricing-header {
    text-align: center;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--gray-200);
}

.pricing-header h3 {
    font-size: 24px;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.pricing-price .price {
    font-size: 48px;
    font-weight: 700;
    color: var(--gray-900);
}

.pricing-price .period {
    color: var(--gray-500);
}

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

.pricing-features li {
    padding: 8px 0;
    color: var(--gray-600);
    position: relative;
    padding-left: 28px;
}

.pricing-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 600;
}

.pricing-features li strong {
    color: var(--gray-900);
}

@media (min-width: 768px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Beta Section */
.beta {
    background: var(--white);
}

.beta-card {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: 48px 32px;
    border-radius: var(--radius-xl);
    text-align: center;
    color: var(--white);
}

.beta-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
}

.beta-card h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 12px;
}

.beta-card p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 24px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.beta-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 400px;
    margin: 0 auto;
}

.beta-form input {
    padding: 14px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: 16px;
    width: 100%;
}

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

.beta-form .btn:hover {
    background: var(--gray-100);
}

@media (min-width: 768px) {
    .beta-card {
        padding: 64px;
    }
    .beta-form {
        flex-direction: row;
    }
    .beta-form input {
        flex: 1;
    }
}

/* Testimonials */
.testimonials {
    background: var(--gray-50);
}

.testimonials-grid {
    display: grid;
    gap: 24px;
}

.testimonial-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.testimonial-stars {
    color: var(--warning);
    margin-bottom: 16px;
    letter-spacing: 2px;
}

.testimonial-card p {
    font-size: 17px;
    color: var(--gray-700);
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.author-info strong {
    display: block;
    color: var(--gray-900);
}

.author-info span {
    font-size: 14px;
    color: var(--gray-500);
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* FAQ */
.faq {
    background: var(--white);
}

.faq-list {
    max-width: 700px;
    margin: 0 auto;
}

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

.faq-item summary {
    padding: 20px 0;
    font-size: 17px;
    font-weight: 600;
    color: var(--gray-900);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::after {
    content: '+';
    font-size: 24px;
    color: var(--gray-400);
}

.faq-item[open] summary::after {
    content: '−';
}

.faq-item p {
    padding-bottom: 20px;
    color: var(--gray-600);
}

/* CTA Section */
.cta {
    background: var(--gray-900);
    text-align: center;
    padding: 80px 20px;
}

.cta h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}

.cta p {
    font-size: 18px;
    color: var(--gray-400);
    margin-bottom: 32px;
}

/* Footer */
.footer {
    background: var(--gray-900);
    padding: 60px 0 30px;
    color: var(--gray-400);
}

.footer-grid {
    display: grid;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand p {
    margin-top: 16px;
    font-size: 14px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--white);
}

.footer-logo .logo-text {
    font-weight: 700;
    font-size: 18px;
}

.footer-links h4 {
    color: var(--white);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--gray-400);
    font-size: 14px;
}

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

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: 30px;
    text-align: center;
    font-size: 14px;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

/* Mobile Nav */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    padding: 12px 20px;
    z-index: 1000;
}

@media (max-width: 767px) {
    .mobile-nav {
        display: flex;
        align-items: center;
        justify-content: space-around;
        gap: 8px;
    }
    .mobile-nav a {
        font-size: 13px;
        color: var(--gray-600);
    }
    .mobile-nav .btn {
        padding: 10px 16px;
        font-size: 13px;
    }
    body {
        padding-bottom: 70px;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mb-4 {
    margin-bottom: 16px;
}

.mt-4 {
    margin-top: 16px;
}

/* Auth Page Logo Image */
.auth-logo-img {
    height: 48px;
    width: auto;
}