/* ===================================
   AlbumScan Landing Page Styles
   =================================== */

/* CSS Custom Properties */
:root {
    --color-black: #000000;
    --color-dark: #111111;
    --color-green: #00DD51;
    --color-green-glow: rgba(0, 221, 81, 0.3);
    --color-white: #FFFFFF;
    --color-gray: #888888;
    --color-gray-light: #CCCCCC;

    --font-body: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-accent: 'Bungee', sans-serif;

    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 80px;
    --spacing-xxl: 120px;

    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.6;
    color: var(--color-white);
    background-color: var(--color-black);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding-top: 60px;
}

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

h1 {
    font-size: clamp(36px, 6vw, 64px);
}

h2 {
    font-size: clamp(28px, 4vw, 48px);
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: 24px;
    margin-bottom: var(--spacing-sm);
}

p {
    margin-bottom: var(--spacing-sm);
}

p:last-child {
    margin-bottom: 0;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid #222;
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-accent);
    font-size: 20px;
    color: var(--color-white);
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--color-gray-light);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    border-bottom: 2px solid transparent;
    transition: all 0.2s ease;
}

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

.nav-link.active {
    color: var(--color-green);
    border-bottom-color: var(--color-green);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
}

/* Layout */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

section {
    padding: var(--spacing-xl) 0;
}

/* Section Labels */
.section-label {
    font-family: var(--font-accent);
    font-size: 17px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
}

.eyebrow {
    font-family: var(--font-accent);
    font-size: 17px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-green);
    margin-bottom: var(--spacing-md);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
}

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

.btn-primary:hover {
    box-shadow: 0 0 20px var(--color-green-glow);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--color-white);
    color: var(--color-black);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 20px;
}

.btn-text {
    color: var(--color-gray-light);
    text-decoration: none;
    font-size: 16px;
    transition: color 0.2s ease;
}

.btn-text:hover {
    color: var(--color-green);
}

.apple-icon {
    width: 20px;
    height: 20px;
}

/* ===================================
   SECTION 1: Hero
   =================================== */
.hero {
    display: flex;
    align-items: center;
    margin: 5% 0;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-content {
    text-align: left;
}

.hero h1 {
    margin-bottom: var(--spacing-md);
}

.hero .subheadline {
    font-size: 20px;
    color: var(--color-gray-light);
    margin-bottom: var(--spacing-lg);
}

.cta-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-md);
}

.hero-mockup {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Three-phone stack layout */
.phone-stack {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 580px;
}

.phone-stack img {
    border-radius: 24px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.phone-front {
    position: relative;
    z-index: 3;
}

.phone-front img {
    width: 260px;
    height: auto;
}

.phone-back {
    position: absolute;
    z-index: 1;
    opacity: 0.7;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.phone-back:hover {
    opacity: 0.9;
}

.phone-back img {
    width: 220px;
    height: auto;
}

.phone-left {
    left: 0;
    transform: translateX(-10%) scale(0.85);
}

.phone-right {
    right: 0;
    transform: translateX(10%) scale(0.85);
}

/* Hero responsive: stack on tablet and below */
@media (max-width: 900px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        text-align: center;
        order: 2;
    }

    .hero-mockup {
        order: 1;
        margin-bottom: var(--spacing-md);
    }

    .cta-group {
        justify-content: center;
    }

    /* Shrink three-phone stack for tablet */
    .phone-stack {
        height: 320px;
    }

    .phone-front img {
        width: 140px;
    }

    .phone-back img {
        width: 130px;
    }

    .phone-left {
        left: 50%;
        transform: translateX(-115%) scale(0.85);
    }

    .phone-right {
        right: 50%;
        transform: translateX(115%) scale(0.85);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .phone-stack {
        height: 220px;
    }

    .hero-mockup {
        margin-bottom: 0;
    }

    .phone-front img {
        width: 120px;
    }

    .phone-back img {
        width: 110px;
    }

    .phone-left {
        left: 50%;
        transform: translateX(-115%) scale(0.85);
    }

    .phone-right {
        right: 50%;
        transform: translateX(115%) scale(0.85);
    }
}

/* ===================================
   SECTION 2: Problem
   =================================== */
.problem {
    background-color: var(--color-dark);
}

.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.column-left h2 {
    font-size: clamp(28px, 4vw, 42px);
    margin-bottom: 0;
}

.column-right p {
    color: var(--color-gray-light);
}

.highlight {
    color: var(--color-white);
    font-weight: 700;
    font-size: 20px;
}

.problem-list-horizontal {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin: var(--spacing-lg) 0;
}

.problem-list-horizontal li {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.problem-list-horizontal h3 {
    color: var(--color-white);
    font-size: 24px;
    margin-bottom: 0;
}

.problem-list-horizontal p {
    color: var(--color-gray-light);
    margin-bottom: 0;
}

.problem-icon {
    width: 56px;
    height: 56px;
    color: var(--color-green);
    margin-bottom: var(--spacing-sm);
}

@media (max-width: 900px) {
    .problem-list-horizontal {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .two-column {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

/* ===================================
   SECTION 3: How It Works
   =================================== */
.how-it-works {
    background-color: var(--color-black);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.step-card {
    background-color: var(--color-dark);
    border-radius: 12px;
    overflow: hidden;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.step-image {
    position: relative;
    background-color: var(--color-black);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-image img {
    width: 100%;
    height: auto;
    object-fit: contain;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray);
    font-size: 14px;
    border: 2px dashed var(--color-gray);
}

.step-content {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.step-number {
    font-family: var(--font-accent);
    font-size: 36px;
    color: var(--color-green);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.step-card h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
}

.step-card p {
    color: var(--color-gray-light);
    margin-bottom: 0;
}

@media (max-width: 900px) {
    .steps-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }

    .step-card {
        grid-template-columns: 1fr;
    }

    .step-image {
        aspect-ratio: 9 / 14;
    }
}

/* ===================================
   SECTION 4: Features
   =================================== */
.features {
    background-color: var(--color-dark);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.feature-card {
    background-color: var(--color-black);
    padding: var(--spacing-md);
    border-radius: 12px;
    border: 1px solid #222;
}

.feature-card h3 {
    color: var(--color-green);
    font-size: 18px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.feature-table-section {
    margin-bottom: var(--spacing-xl);
}

.feature-table-section:last-child {
    margin-bottom: 0;
}

.tier-label {
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-gray-light);
    margin-bottom: var(--spacing-md);
}

.tier-label.tier-ultra {
    color: var(--color-green);
}

.tier-subtitle {
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
    margin-top: calc(-1 * var(--spacing-sm));
}

.feature-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 var(--spacing-sm);
}

.feature-table tr {
    background-color: var(--color-black);
    border-radius: 8px;
}

.feature-table td {
    padding: var(--spacing-md);
    vertical-align: middle;
}

.feature-table td:first-child {
    border-left: 3px solid var(--color-green);
    border-radius: 8px 0 0 8px;
}

.feature-table td:last-child {
    border-radius: 0 8px 8px 0;
}

.feature-name {
    font-weight: 600;
    font-size: 18px;
    color: var(--color-white);
    width: 220px;
    padding-right: var(--spacing-md);
}

.feature-desc {
    color: var(--color-gray-light);
}

.feature-row-ultra {
    background-color: rgba(0, 221, 81, 0.05);
}

.feature-row-ultra .feature-name {
    color: var(--color-green);
}

.ultra-label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-green);
    margin-bottom: 4px;
}

@media (max-width: 600px) {
    .feature-table {
        border-spacing: 0 var(--spacing-sm);
    }

    .feature-table tr {
        display: flex;
        flex-direction: column;
    }

    .feature-table td {
        padding: var(--spacing-md);
    }

    .feature-table td:first-child {
        border-radius: 8px 8px 0 0;
        border-left: none;
        border-top: 3px solid var(--color-green);
        padding-bottom: var(--spacing-xs);
    }

    .feature-table td:last-child {
        border-radius: 0 0 8px 8px;
        padding-top: 0;
    }

    .feature-name {
        width: 100%;
        padding-right: 0;
    }
}

/* ===================================
   SECTION 5: Philosophy
   =================================== */
.philosophy {
    background-color: var(--color-black);
    text-align: center;
}

.philosophy h2 {
    font-size: clamp(36px, 5vw, 56px);
}

.philosophy-content {
    max-width: 700px;
    margin: var(--spacing-lg) auto 0;
}

.philosophy-content p {
    color: var(--color-gray-light);
    font-size: 20px;
}

.philosophy-content .highlight {
    font-size: 24px;
    margin: var(--spacing-md) 0;
}

/* ===================================
   SECTION 6: Pricing
   =================================== */
.pricing {
    background-color: var(--color-dark);
}

.pricing h2 {
    text-align: center;
}

.pricing .section-label {
    text-align: center;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.pricing-card {
    background-color: var(--color-black);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid #222;
    text-align: center;
}

.pricing-card.featured {
    border-color: var(--color-green);
    position: relative;
}

.pricing-card h3 {
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-gray-light);
}

.price {
    margin: var(--spacing-md) 0;
}

.price .amount {
    font-family: var(--font-accent);
    font-size: 48px;
    color: var(--color-green);
}

.price .period {
    color: var(--color-gray);
    font-size: 18px;
}

.pricing-card ul {
    list-style: none;
    text-align: left;
    margin: var(--spacing-md) 0;
}

.pricing-card li {
    padding: var(--spacing-xs) 0;
    color: var(--color-gray-light);
    border-bottom: 1px solid #222;
}

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

.pricing-card li::before {
    content: "✓ ";
    color: var(--color-green);
}

.pricing-card .btn {
    width: 100%;
    justify-content: center;
    margin-top: var(--spacing-md);
}

.pricing-note {
    font-size: 14px;
    color: var(--color-gray);
    margin-top: var(--spacing-sm);
}

.pricing-footer {
    text-align: center;
    color: var(--color-gray);
    margin-top: var(--spacing-lg);
    font-size: 16px;
}

@media (max-width: 1024px) {
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
}

/* ===================================
   SECTION 7: Testimonials
   =================================== */
.testimonials {
    background-color: var(--color-black);
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.testimonial {
    background-color: var(--color-dark);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border-left: 4px solid var(--color-green);
}

.testimonial p {
    font-size: 18px;
    font-style: italic;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.testimonial cite {
    color: var(--color-gray);
    font-style: normal;
}

@media (max-width: 900px) {
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   SECTION 8: FAQ
   =================================== */
.faq {
    background-color: var(--color-dark);
}

.faq-list {
    max-width: 800px;
    margin: var(--spacing-lg) auto 0;
}

.faq-item {
    border-bottom: 1px solid #333;
}

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

.faq-item summary::after {
    content: "+";
    font-size: 24px;
    color: var(--color-green);
    transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item p {
    padding-bottom: var(--spacing-md);
    color: var(--color-gray-light);
}

/* ===================================
   SECTION 9: Final CTA
   =================================== */
.final-cta {
    background-color: var(--color-black);
    text-align: center;
    padding: var(--spacing-xxl) 0;
}

.final-cta h2 {
    font-size: clamp(36px, 5vw, 56px);
    margin-bottom: var(--spacing-sm);
}

.final-cta > .container > p {
    font-size: 20px;
    color: var(--color-gray-light);
    margin-bottom: var(--spacing-lg);
}

.micro-copy {
    font-size: 14px;
    color: var(--color-gray);
    margin-top: var(--spacing-md);
}

/* ===================================
   SECTION 10: Footer
   =================================== */
.footer {
    background-color: var(--color-dark);
    padding: var(--spacing-lg) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.footer-logo {
    height: 20px;
    width: auto;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer-links a {
    color: var(--color-gray-light);
    text-decoration: none;
    font-size: 16px;
    transition: color 0.2s ease;
}

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

.copyright {
    text-align: center;
    color: var(--color-gray);
    font-size: 14px;
    padding-top: var(--spacing-md);
    border-top: 1px solid #333;
}

@media (max-width: 600px) {
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .footer-links {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
}