/* ============================================
   Minimalist Design System
   ============================================ */

:root {
    --primary: #000000;
    --primary-hover: #333333;
    --text-primary: #000000;
    --text-secondary: #666666;
    --text-light: #999999;
    --bg-primary: #FFFFFF;
    --bg-secondary: #FAFAFA;
    --border: #E5E5E5;
    --error: #000000;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --radius: 4px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Navigation Bar
   ============================================ */

.navbar {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    width: 100%;
}

.navbar-minimal {
    border-bottom: 1px solid var(--border);
    background: var(--bg-primary);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

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

.nav-brand-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: center;
    transition: opacity 0.2s ease;
}

.nav-brand-link:hover {
    opacity: 0.7;
}

.nav-brand h2 {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 400;
    letter-spacing: -0.5px;
    margin: 0;
    line-height: 1;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-shrink: 0;
}

.nav-brand {
    flex-shrink: 0;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color 0.2s ease;
    white-space: nowrap;
}

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

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-name {
    font-weight: 400;
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.stat-badge {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.8125rem;
    font-weight: 400;
}

/* ============================================
   Home Page
   ============================================ */

.home-page {
    background: var(--bg-primary);
    min-height: 100vh;
}

.hero-wrapper {
    position: relative;
    min-height: 100vh;
}

.home-hero {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
    position: relative;
}

.hero-with-bg {
    background-image: url('/static/images/photo_5.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 100vh;
    position: relative;
    padding-top: 80px;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.6));
    z-index: 1;
}

.hero-content {
    max-width: 600px;
    position: relative;
    z-index: 2;
}

.hero-content-overlay {
    color: white;
}

.hero-title {
    font-size: 4rem;
    font-weight: 300;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
    line-height: 1.1;
}

.hero-content-overlay .hero-title {
    color: white;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8), 0 4px 20px rgba(0, 0, 0, 0.6);
    font-weight: 400;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-weight: 400;
}

.hero-content-overlay .hero-subtitle {
    color: white;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8), 0 1px 4px rgba(0, 0, 0, 0.6);
    font-weight: 500;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 3rem;
}

.hero-note {
    margin-top: 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
    text-align: center;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

.btn-enhance {
    background: white;
    color: var(--text-primary);
    border-color: white;
    font-weight: 600;
    font-size: 1.125rem;
    padding: 1.5rem 3rem;
    box-shadow: 0 4px 20px rgba(20, 184, 166, 0.6), 0 0 30px rgba(20, 184, 166, 0.4), 0 2px 8px rgba(0, 0, 0, 0.2);
    min-width: 220px;
}

.btn-enhance:hover {
    background: #f8f9fa;
    border-color: #f8f9fa;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(20, 184, 166, 0.7), 0 0 40px rgba(20, 184, 166, 0.5), 0 4px 12px rgba(0, 0, 0, 0.3);
}


.enhance-icon {
    font-size: 1.25rem;
    display: inline-block;
}

.btn-outline-white {
    background: transparent;
    color: white;
    border-color: white;
    font-weight: 400;
}

.btn-outline-white:hover {
    background: white;
    color: var(--text-primary);
    border-color: white;
    transform: translateY(-1px);
}

.navbar-overlay {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.navbar-overlay .nav-brand h2 {
    color: var(--text-primary);
}

.navbar-overlay .nav-link {
    color: var(--text-primary);
}

.navbar-overlay .btn-primary {
    background: var(--text-primary);
    color: white;
    border-color: var(--text-primary);
}

.upload-section-home {
    padding: 6rem 2rem;
    background: var(--bg-primary);
}

.info-banner {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    margin-bottom: 2rem;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.info-banner p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin: 0;
    line-height: 1.6;
}

.info-banner strong {
    color: var(--text-primary);
    font-weight: 500;
}

.enhancement-settings {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.setting-label {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.radio-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-primary);
    transition: all 0.2s ease;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.radio-option:hover {
    border-color: var(--text-primary);
    background: var(--bg-secondary);
}

.radio-option input[type="radio"] {
    margin: 0;
    cursor: pointer;
}

.radio-option input[type="radio"]:checked + span {
    color: var(--text-primary);
    font-weight: 500;
}

.radio-option:has(input[type="radio"]:checked) {
    border-color: var(--text-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.results-note {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    font-style: italic;
}

.results-note .btn {
    margin-top: 1rem;
    font-style: normal;
}

.signup-prompt {
    margin-top: 2rem;
    padding: 1.75rem 2rem;
    background: var(--bg-primary);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.signup-prompt-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.signup-prompt-content h3 {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.3px;
}

.signup-prompt-content p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
}

.signup-prompt-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

.signup-prompt-actions .btn-primary {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
    padding: 0.75rem 1.75rem;
    font-weight: 500;
}

.signup-prompt-actions .btn-primary:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
}

.signup-prompt-actions .btn-outline {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--text-primary);
    padding: 0.75rem 1.75rem;
    font-weight: 500;
}

.signup-prompt-actions .btn-outline:hover {
    background: var(--text-primary);
    color: var(--bg-primary);
    transform: translateY(-1px);
}

.stats-section {
    padding: 4rem 2rem;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    text-align: center;
}

.stat-item {
    padding: 1.5rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 300;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.features-section {
    padding: 6rem 2rem;
    background: var(--bg-secondary);
}

.container-narrow {
    max-width: 1000px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
}

.feature-item {
    text-align: center;
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    line-height: 1;
    filter: grayscale(0%);
}

.feature-item h3 {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    letter-spacing: -0.5px;
}

.feature-item p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.how-it-works-section {
    padding: 6rem 2rem;
    background: var(--bg-primary);
}

.section-title {
    font-size: 2rem;
    font-weight: 300;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 3rem;
    letter-spacing: -1px;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.step-item {
    text-align: center;
    padding: 2rem 1rem;
}

.step-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--text-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 400;
    margin: 0 auto 1.5rem;
}

.step-item h3 {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    letter-spacing: -0.5px;
}

.step-item p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.faq-section {
    padding: 6rem 2rem;
    background: var(--bg-secondary);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    padding: 2rem 0;
    border-bottom: 1px solid var(--border);
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.faq-answer {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.cta-section {
    padding: 6rem 2rem;
    background: var(--bg-primary);
    text-align: center;
}

.cta-title {
    font-size: 2rem;
    font-weight: 300;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.cta-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.pricing-section {
    padding: 6rem 2rem;
    background: var(--bg-primary);
    min-height: calc(100vh - 80px);
}

.pricing-title {
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

.pricing-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 4rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    align-items: stretch;
}

.pricing-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem 2rem;
    position: relative;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.pricing-card:hover {
    border-color: var(--text-primary);
    box-shadow: var(--shadow);
}

.pricing-card-featured {
    border: 2px solid var(--text-primary);
}

@media (min-width: 769px) {
    .pricing-card-featured {
        transform: scale(1.02);
    }
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-primary);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.8125rem;
    font-weight: 500;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.pricing-plan-name {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.pricing-price {
    margin-bottom: 0.5rem;
}

.price-amount {
    font-size: 3rem;
    font-weight: 300;
    color: var(--text-primary);
    letter-spacing: -2px;
}

.pricing-photos {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.pricing-per-photo {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.pricing-features {
    margin-bottom: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-list li {
    padding: 0.75rem 0;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    border-bottom: 1px solid var(--bg-secondary);
    line-height: 1.5;
}

.feature-list li:last-child {
    border-bottom: none;
}

.pricing-action .btn {
    width: 100%;
    padding: 0.875rem 1.5rem;
    text-align: center;
}

.pricing-action {
    margin-top: auto;
    flex-shrink: 0;
    padding-top: 1rem;
}

.pricing-note {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.home-footer {
    padding: 4rem 2rem 2rem;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.footer-section h3 {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.footer-section p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
    margin: 0;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-light);
    font-size: 0.875rem;
}

.auth-page .home-footer {
    margin-top: 0;
    padding: 3rem 2rem 2rem;
}

/* ============================================
   Authentication Pages
   ============================================ */

.auth-page {
    background: var(--bg-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 0;
}

.auth-page > .auth-container {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    width: 100%;
    box-sizing: border-box;
}

.auth-page .auth-card {
    max-width: 400px;
    width: 100%;
}

.auth-card {
    background: var(--bg-primary);
    border-radius: var(--radius);
    padding: 3rem 2.5rem;
    border: 1px solid var(--border);
}

.auth-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.auth-header h1 {
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 300;
    letter-spacing: -0.5px;
}

.auth-header p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 400;
}

.auth-subnote {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.auth-subnote a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
}

.auth-subnote a:hover {
    text-decoration: underline;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 400;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-group input {
    padding: 0.75rem 0;
    border: none;
    border-bottom: 1px solid var(--border);
    font-size: 0.9375rem;
    transition: all 0.2s ease;
    background: var(--bg-primary);
    color: var(--text-primary);
}

.form-group input:focus {
    outline: none;
    border-bottom-color: var(--text-primary);
}

.form-hint {
    color: var(--text-light);
    font-size: 0.75rem;
    margin-top: -0.25rem;
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.auth-footer a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 400;
    transition: color 0.2s ease;
}

.auth-footer a:hover {
    color: var(--text-secondary);
}

.error-message {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 1rem;
    border-radius: var(--radius);
    margin-top: 1rem;
    font-size: 0.875rem;
    text-align: center;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--text-primary);
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
    background: transparent;
    color: var(--text-primary);
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

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

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

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

.btn-block {
    width: 100%;
}

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-google {
    background: white;
    color: #3c4043;
    border: 1px solid #dadce0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-google:hover {
    background: #f8f9fa;
    border-color: #dadce0;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.auth-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 1.5rem 0;
    color: var(--text-light);
    font-size: 0.875rem;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border);
}

.auth-divider span {
    padding: 0 1rem;
    background: var(--bg-primary);
}

/* ============================================
   Dashboard
   ============================================ */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.dashboard-header {
    margin-bottom: 4rem;
}

.welcome-section {
    margin-bottom: 3rem;
}

.welcome-section h1 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 300;
    letter-spacing: -1px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 400;
}

.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat-card {
    background: var(--bg-primary);
    border-radius: var(--radius);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border: 1px solid var(--border);
}

.stat-icon {
    font-size: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    letter-spacing: -0.5px;
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* ============================================
   Upload Section
   ============================================ */

.upload-section {
    margin-bottom: 4rem;
}

.upload-section .enhancement-settings {
    margin-bottom: 2rem;
}

.tips-section {
    margin-bottom: 3rem;
}

.tip-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    max-width: 600px;
    margin: 0 auto;
}

.tip-card h3 {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: -0.5px;
}

.tips-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tips-list li {
    padding: 0.75rem 0;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    border-bottom: 1px solid var(--border);
    padding-left: 1.5rem;
    position: relative;
}

.tips-list li:last-child {
    border-bottom: none;
}

.tips-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--text-primary);
    font-weight: bold;
}

.upload-area {
    border: 1px dashed var(--border);
    border-radius: var(--radius);
    padding: 4rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--bg-primary);
}

.upload-area:hover {
    border-color: var(--text-primary);
    background: var(--bg-secondary);
}

.upload-area.dragover {
    border-color: var(--text-primary);
    background: var(--bg-secondary);
}

.upload-icon {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    opacity: 0.5;
}

.upload-text {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 400;
}

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

/* ============================================
   Progress Section
   ============================================ */

.progress-section {
    margin-bottom: 4rem;
}

.progress-section h2 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
    font-weight: 300;
    letter-spacing: -0.5px;
}

.progress-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.progress-item {
    background: var(--bg-primary);
    border-radius: var(--radius);
    padding: 1.25rem;
    border-left: 2px solid var(--text-primary);
    border: 1px solid var(--border);
}

.progress-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.progress-item-name {
    font-weight: 400;
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.progress-item-status {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.progress-bar-container {
    width: 100%;
    height: 2px;
    background: var(--border);
    border-radius: 1px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--text-primary);
    width: 0%;
    transition: width 0.3s ease;
}

.progress-item.completed .progress-bar {
    background: var(--text-primary);
}

/* ============================================
   Results Section
   ============================================ */

/* Results Section Selection Controls */
.results-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.selection-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.selection-count {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.results-section {
    margin-top: 4rem;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.results-header h2 {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 300;
    letter-spacing: -0.5px;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(950px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.result-item {
    background: var(--bg-primary);
    border-radius: var(--radius);
    overflow: visible;
    border: 1px solid var(--border);
    transition: all 0.2s ease;
    position: relative;
}

.result-item-checkbox {
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 10;
    background: rgba(255, 255, 255, 0.9);
    padding: 0.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.photo-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary);
}

.checkbox-label {
    display: none;
}

.result-item {
    cursor: pointer;
}

.result-item:hover {
    border-color: var(--text-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.result-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.comparison-side {
    position: relative;
    border-right: 1px solid var(--border);
}

.comparison-side:last-child {
    border-right: none;
}

.comparison-label-small {
    position: absolute;
    top: 0.75rem;
    left: 0.75rem;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    z-index: 2;
    backdrop-filter: blur(4px);
}

.result-image-container {
    position: relative;
    width: 100%;
    padding-top: 60%;
    overflow: hidden;
    background: var(--bg-secondary);
}

.result-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: var(--bg-secondary);
}

.result-info {
    padding: 1.25rem;
}

.result-name {
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 0.9375rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.result-actions {
    display: flex;
    gap: 0.75rem;
}

.btn-download {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
    flex: 1;
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
}

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

.btn-compare {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--text-primary);
    flex: 1;
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
}

.btn-compare:hover {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.download-all-btn {
    padding: 0.875rem 1.5rem;
    background: var(--text-primary);
    color: var(--bg-primary);
    border: 1px solid var(--text-primary);
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.2s ease;
}

.download-all-btn:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
}

/* ============================================
   Comparison Modal
   ============================================ */

.comparison-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.98);
    z-index: 1000;
    padding: 2rem;
    align-items: center;
    justify-content: center;
}

.comparison-modal.active {
    display: flex;
}

.comparison-content {
    max-width: 90%;
    max-height: 90%;
    display: flex;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
}

.comparison-image-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.comparison-image {
    max-width: 45vw;
    max-height: 85vh;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    object-fit: contain;
}

.comparison-label {
    color: var(--text-primary);
    text-align: center;
    font-weight: 400;
    font-size: 0.9375rem;
}

.close-modal {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: transparent;
    border: 1px solid var(--border);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    color: var(--text-primary);
    font-weight: 300;
}

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

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    .container {
        padding: 2rem 1rem;
    }

    .nav-container {
        padding: 0 1rem;
        flex-wrap: wrap;
    }

    .nav-menu {
        gap: 0.75rem;
        flex-wrap: wrap;
    }
    
    .nav-link {
        font-size: 0.875rem;
    }
    
    .btn-sm {
        padding: 0.5rem 0.875rem;
        font-size: 0.8125rem;
    }

    .user-info {
        flex-direction: column;
        align-items: flex-end;
        gap: 0.5rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-with-bg {
        padding-top: 70px;
        min-height: 100vh;
    }

    .hero-content {
        padding: 2rem 1rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
        max-width: 300px;
    }

    .auth-card {
        padding: 2rem 1.5rem;
    }

    .stats-cards {
        grid-template-columns: 1fr;
    }

    .results-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .results-header {
        flex-direction: column;
        align-items: stretch;
    }

    .download-all-btn {
        width: 100%;
    }

    .comparison-content {
        flex-direction: column;
        gap: 1rem;
    }

    .comparison-image {
        max-width: 100%;
    }

    .upload-area {
        padding: 3rem 1.5rem;
    }

    .features-grid {
        gap: 3rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .steps-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .faq-item {
        padding: 1.5rem 0;
    }

    .faq-question {
        font-size: 1rem;
    }

    .cta-title {
        font-size: 1.75rem;
    }

    .cta-subtitle {
        font-size: 1rem;
    }

    .footer-content {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 2rem;
    }

    .footer-section {
        text-align: center;
    }

    .upload-section-home {
        padding: 4rem 1rem;
    }

    .enhancement-settings {
        grid-template-columns: 1fr;
        padding: 1.5rem;
        gap: 1.5rem;
    }

    .radio-group {
        flex-direction: column;
        gap: 0.75rem;
    }

    .radio-option {
        width: 100%;
    }

    .signup-prompt {
        padding: 1.5rem 1.25rem;
        margin-top: 1.5rem;
    }

    .signup-prompt-content h3 {
        font-size: 1.125rem;
    }

    .signup-prompt-content p {
        font-size: 0.8125rem;
        margin-bottom: 1rem;
    }

    .signup-prompt-actions {
        flex-direction: column;
        gap: 0.625rem;
    }

    .signup-prompt-actions .btn {
        width: 100%;
        max-width: 300px;
        padding: 0.625rem 1.5rem;
    }

    .result-comparison {
        grid-template-columns: 1fr;
    }

    .comparison-side {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .comparison-side:last-child {
        border-bottom: none;
    }

    .pricing-title {
        font-size: 2rem;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .pricing-card-featured {
        transform: scale(1);
        border-width: 1px;
    }
}

/* ============================================
   Legal Pages
   ============================================ */

.legal-page {
    max-width: 900px;
    margin: 4rem auto;
    padding: 2rem;
    line-height: 1.8;
}

.legal-page h1 {
    font-size: 2.5rem;
    font-weight: 300;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.last-updated {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 3rem;
    font-style: italic;
}

.legal-page section {
    margin-bottom: 3rem;
}

.legal-page h2 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.legal-page h3 {
    font-size: 1.25rem;
    font-weight: 400;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.legal-page p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.legal-page ul,
.legal-page ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.legal-page li {
    margin-bottom: 0.5rem;
}

.legal-page a {
    color: var(--text-primary);
    text-decoration: underline;
    transition: color 0.2s ease;
}

.legal-page a:hover {
    color: var(--text-secondary);
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin-top: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 400;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: border-color 0.2s ease;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

@media (max-width: 768px) {
    .legal-page {
        padding: 1rem;
        margin: 2rem auto;
    }
    
    .legal-page h1 {
        font-size: 2rem;
    }
    
    .legal-page h2 {
        font-size: 1.25rem;
    }
    
    .legal-page h3 {
        font-size: 1.125rem;
    }
}

    .pricing-card {
        padding: 2rem 1.5rem;
    }
    
    .pricing-header {
        padding-bottom: 1.5rem;
        margin-bottom: 1.5rem;
    }
    
    .pricing-features {
        margin-bottom: 1.5rem;
    }

    .price-amount {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .auth-card {
        padding: 1.5rem;
    }

    .welcome-section h1 {
        font-size: 1.75rem;
    }

    .stat-card {
        flex-direction: column;
        text-align: center;
    }
}

/* ============================================
   Features Page Styles
   ============================================ */

.features-hero-section {
    padding: 8rem 2rem 6rem;
    background: var(--bg-primary);
    text-align: center;
}

.features-hero-title {
    font-size: 3.5rem;
    font-weight: 300;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
    line-height: 1.1;
}

.features-hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-weight: 400;
}

.features-hero-actions {
    margin-bottom: 1.5rem;
}

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

.features-stats-section {
    padding: 4rem 2rem;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.features-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    text-align: center;
}

.features-stat-item {
    padding: 1.5rem;
}

.features-stat-number {
    font-size: 3.5rem;
    font-weight: 300;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.features-stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.features-showcase-section {
    padding: 6rem 2rem;
    background: var(--bg-primary);
}

.features-detail-section {
    padding: 6rem 2rem;
    background: var(--bg-secondary);
}

.features-detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-detail-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    transition: all 0.2s ease;
}

.feature-detail-card:hover {
    border-color: var(--text-primary);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.feature-detail-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: inline-block;
    line-height: 1;
}

.feature-detail-card h3 {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    letter-spacing: -0.5px;
}

.feature-detail-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.features-comparison-section {
    padding: 6rem 2rem;
    background: var(--bg-primary);
}

.comparison-showcase {
    max-width: 1000px;
    margin: 3rem auto 0;
    display: grid;
    gap: 3rem;
}

.comparison-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
}

.comparison-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.comparison-initials {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--text-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 500;
    flex-shrink: 0;
}

.comparison-info h4 {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    letter-spacing: -0.5px;
}

.comparison-info p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.comparison-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.comparison-image-wrapper {
    position: relative;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.comparison-label {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--text-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-weight: 500;
}

.comparison-placeholder {
    color: var(--text-light);
    font-size: 0.875rem;
    text-align: center;
}

@media (max-width: 768px) {
    .features-hero-title {
        font-size: 2.5rem;
    }

    .features-hero-subtitle {
        font-size: 1.125rem;
    }

    .features-stats-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .features-detail-grid {
        grid-template-columns: 1fr;
    }

    .comparison-images {
        grid-template-columns: 1fr;
    }

    .comparison-item {
        padding: 1.5rem;
    }
}