/* ==========================================================================
   Prism Notes — Landing Page Styles
   A modern, minimal aesthetic with subtle depth and motion
   ========================================================================== */

:root {
    /* Colors - Dark sophisticated palette */
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-tertiary: #18181b;
    --bg-elevated: #1f1f23;
    
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    
    /* Prism colors - matching mobile app */
    --prism-primary: #00D9FF;
    --prism-primary-dark: #00B8D9;
    --prism-primary-light: #33E0FF;
    --prism-cyan: #00D9FF;
    --prism-teal: #00B8D9;
    --prism-emerald: #10b981;
    
    /* Functional */
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-light: rgba(255, 255, 255, 0.1);
    
    /* Typography */
    --font-serif: 'Instrument Serif', Georgia, serif;
    --font-sans: 'Manrope', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
}

/* Ambient Background */
.ambient-bg {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.4;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--prism-primary), transparent 70%);
    top: -200px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--prism-cyan), transparent 70%);
    bottom: -150px;
    left: -100px;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--prism-emerald), transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
    opacity: 0.2;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -30px) scale(1.05); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(-30px, -20px) scale(1.02); }
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--space-md) var(--space-xl);
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.125rem;
}

.logo-icon {
    width: 28px;
    height: 28px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.25rem;
    border-radius: 10px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.3s var(--ease-out);
}

.btn-login {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.btn-login:hover {
    background: var(--bg-tertiary);
    border-color: var(--prism-primary);
}

.btn-primary {
    background: linear-gradient(135deg, var(--prism-primary), var(--prism-primary-dark));
    color: white;
    box-shadow: 0 4px 20px rgba(0, 217, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 217, 255, 0.4);
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.btn-outline:hover {
    background: var(--bg-elevated);
    border-color: var(--prism-cyan);
}

.btn-google {
    background: white;
    color: #1f1f1f;
    width: 100%;
    padding: 0.875rem 1.25rem;
}

.btn-google:hover {
    background: #f5f5f5;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.full-width {
    width: 100%;
}

/* Hero Section */
.hero {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding: 8rem var(--space-xl) var(--space-4xl);
}

.hero-content {
    max-width: 560px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.5rem 1rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: 100px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.8s var(--ease-out) forwards;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--prism-emerald);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.9); }
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(3rem, 6vw, 4.5rem);
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    animation: fadeInUp 0.8s var(--ease-out) 0.1s forwards;
    opacity: 0;
}

.title-line {
    display: block;
}

.title-italic {
    font-style: italic;
    background: linear-gradient(135deg, var(--prism-primary-light), var(--prism-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-2xl);
    animation: fadeInUp 0.8s var(--ease-out) 0.2s forwards;
    opacity: 0;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    animation: fadeInUp 0.8s var(--ease-out) 0.3s forwards;
    opacity: 0;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hero Visual - Phone Mockup */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 1s var(--ease-out) 0.4s forwards;
    opacity: 0;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.phone-mockup {
    perspective: 1000px;
}

.phone-frame {
    width: 280px;
    height: 580px;
    background: linear-gradient(145deg, #2a2a30, #1a1a1f);
    border-radius: 40px;
    padding: 12px;
    box-shadow: 
        0 50px 100px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transform: rotateY(-5deg) rotateX(5deg);
    transition: transform 0.5s var(--ease-out);
}

.phone-frame:hover {
    transform: rotateY(0deg) rotateX(0deg);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--bg-secondary);
    border-radius: 30px;
    overflow: hidden;
}

.app-preview {
    padding: var(--space-lg);
    height: 100%;
}

.preview-header {
    margin-bottom: var(--space-xl);
    padding-top: var(--space-xl);
}

.preview-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.preview-count {
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

.preview-notes {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.preview-note {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border-radius: 12px;
    animation: noteSlide 0.5s var(--ease-out) forwards;
    opacity: 0;
}

.preview-note:nth-child(1) { animation-delay: 0.6s; }
.preview-note:nth-child(2) { animation-delay: 0.7s; }
.preview-note:nth-child(3) { animation-delay: 0.8s; }

@keyframes noteSlide {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.note-color {
    width: 4px;
    border-radius: 4px;
    flex-shrink: 0;
}

.note-content {
    flex: 1;
    min-width: 0;
}

.note-title {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 4px;
}

.note-text {
    color: var(--text-tertiary);
    font-size: 0.8rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Features Section */
.features {
    position: relative;
    z-index: 1;
    padding: var(--space-4xl) var(--space-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--prism-cyan);
    margin-bottom: var(--space-md);
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    line-height: 1.2;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-top: var(--space-md);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.feature-card {
    padding: var(--space-xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    transition: all 0.3s var(--ease-out);
}

.feature-card:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
    transform: translateY(-4px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.15), rgba(0, 184, 217, 0.15));
    border-radius: 12px;
    margin-bottom: var(--space-lg);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--prism-cyan);
}

.feature-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Pricing Section */
.pricing {
    position: relative;
    z-index: 1;
    padding: var(--space-4xl) var(--space-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    margin-top: var(--space-3xl);
}

.pricing-card {
    position: relative;
    padding: var(--space-2xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    transition: all 0.3s var(--ease-out);
}

.pricing-card:hover {
    border-color: var(--border-light);
}

.pricing-card.featured {
    background: linear-gradient(var(--bg-secondary), var(--bg-secondary)) padding-box,
                linear-gradient(135deg, var(--prism-primary), var(--prism-primary-dark)) border-box;
    border: 1px solid transparent;
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, var(--prism-primary), var(--prism-primary-dark));
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #0a0a0b;
}

.pricing-header {
    margin-bottom: var(--space-xl);
}

.pricing-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.price {
    display: flex;
    align-items: baseline;
    gap: var(--space-xs);
}

.price .amount {
    font-size: 3rem;
    font-weight: 700;
    font-family: var(--font-serif);
}

.price .period {
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.pricing-features svg {
    width: 18px;
    height: 18px;
    stroke: var(--prism-emerald);
    flex-shrink: 0;
}

.pricing-note {
    text-align: center;
    margin-top: var(--space-xl);
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

/* CTA Section */
.cta {
    position: relative;
    z-index: 1;
    padding: var(--space-4xl) var(--space-xl);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--space-3xl);
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(0, 184, 217, 0.1));
    border: 1px solid var(--border-subtle);
    border-radius: 24px;
}

.cta h2 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: var(--space-md);
}

.cta p {
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.cta-buttons {
    display: flex;
    justify-content: center;
}

/* Footer */
.footer {
    position: relative;
    z-index: 1;
    padding: var(--space-4xl) var(--space-xl) var(--space-xl);
    border-top: 1px solid var(--border-subtle);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--space-4xl);
}

.footer-brand .logo {
    margin-bottom: var(--space-md);
}

.footer-brand p {
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: var(--space-4xl);
}

.footer-column h4 {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--text-secondary);
}

.footer-column a {
    display: block;
    color: var(--text-tertiary);
    text-decoration: none;
    font-size: 0.9rem;
    padding: var(--space-xs) 0;
    transition: color 0.2s ease;
}

.footer-column a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    max-width: 1200px;
    margin: var(--space-3xl) auto 0;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-subtle);
}

.footer-bottom p {
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s var(--ease-out);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: relative;
    width: 100%;
    max-width: 420px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    transform: scale(0.95) translateY(20px);
    transition: transform 0.3s var(--ease-out);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-tertiary);
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-close svg {
    width: 20px;
    height: 20px;
}

.modal-content {
    padding: var(--space-2xl);
}

.modal-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.modal-logo {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-md);
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

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

.modal-body {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.divider {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--text-tertiary);
    font-size: 0.8rem;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-subtle);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input {
    padding: 0.875rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-subtle);
    border-radius: 10px;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--prism-primary);
    box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.1);
}

.form-group input::placeholder {
    color: var(--text-tertiary);
}

.signup-link {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.signup-link a {
    color: var(--prism-cyan);
    text-decoration: none;
}

.signup-link a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 10rem;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-actions {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .phone-frame {
        transform: none;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links a:not(.btn) {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-cards {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: var(--space-2xl);
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .phone-frame {
        width: 240px;
        height: 500px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
}