/* NoteDrop Website Styles */

:root {
    --color-primary: #0071e3;
    --color-primary-dark: #0058b0;
    --color-text: #1d1d1f;
    --color-text-secondary: #6e6e73;
    --color-background: #ffffff;
    --color-background-alt: #f5f5f7;
    --color-border: #d2d2d7;
    --color-success: #34c759;
    --color-accent: #5856d6;
    --font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', SFMono-Regular, ui-monospace, monospace;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 18px;
    color: var(--color-text);
    text-decoration: none;
}

.nav-icon {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--color-text);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
}

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

.nav-github {
    padding: 6px 14px;
    background: var(--color-text);
    color: white !important;
    border-radius: 20px;
    font-weight: 500;
}

.nav-github:hover {
    background: var(--color-primary) !important;
}

/* Hero Section */
.hero {
    padding: 140px 24px 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 80px;
    max-width: 1400px;
    margin: 0 auto;
    min-height: 90vh;
}

.hero-content {
    flex: 1;
    max-width: 560px;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

.hero-title .highlight {
    color: var(--color-primary);
}

.hero-subtitle {
    font-size: 21px;
    color: var(--color-text-secondary);
    margin-bottom: 40px;
    line-height: 1.5;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    padding: 14px 28px;
    border-radius: 12px;
    font-size: 17px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--color-background-alt);
    color: var(--color-text);
}

.btn-secondary:hover {
    background: #e8e8ed;
}

.hero-note {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.hero-mockup {
    flex: 1;
    max-width: 480px;
}

/* Mockup Window - Liquid Glass Style */
.mockup-window {
    background: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(250,250,252,0.9) 100%);
    border-radius: 12px;
    box-shadow:
        0 24px 48px rgba(0,0,0,0.12),
        0 0 0 1px rgba(0,0,0,0.06),
        inset 0 1px 0 rgba(255,255,255,0.8);
    overflow: hidden;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.mockup-titlebar {
    background: transparent;
    padding: 14px 20px;
    display: flex;
    align-items: center;
}

.mockup-buttons {
    display: flex;
    gap: 8px;
}

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

.mockup-btn.red { background: #ff5f57; }
.mockup-btn.yellow { background: #febc2e; }
.mockup-btn.green { background: #28c840; }

.mockup-title {
    flex: 1;
    text-align: center;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.mockup-content {
    padding: 0 20px 20px;
}

.mockup-header {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid transparent;
    background: linear-gradient(90deg, transparent 0%, rgba(0,0,0,0.06) 50%, transparent 100%) bottom no-repeat;
    background-size: 100% 1px;
}

.mockup-header::before {
    content: '';
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, #0058b0 100%);
    box-shadow: 0 4px 12px rgba(0,113,227,0.25);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mockup-matter {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: -0.2px;
}

.mockup-number {
    font-size: 11px;
    font-family: var(--font-mono);
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-top: 4px;
    background: rgba(0,0,0,0.04);
    padding: 2px 8px;
    border-radius: 10px;
    display: inline-block;
}

.mockup-divider {
    display: none;
}

.mockup-field {
    margin-bottom: 16px;
}

.mockup-field label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.mockup-select {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: rgba(0,0,0,0.03);
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: 8px;
    font-size: 13px;
    max-width: 180px;
}

.mockup-select span {
    color: var(--color-text-secondary);
    font-size: 10px;
}

.mockup-textarea {
    background: rgba(255,255,255,0.8);
    border: 2px solid rgba(0,113,227,0.3);
    border-radius: 10px;
    padding: 14px;
    font-size: 13px;
    line-height: 1.6;
    min-height: 100px;
    color: var(--color-text);
}

.mockup-cursor {
    color: var(--color-primary);
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.mockup-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
    padding: 14px;
    background: rgba(255,255,255,0.5);
    border-radius: 0 0 12px 12px;
    margin: 16px -20px -20px;
    border-top: 1px solid rgba(0,0,0,0.04);
}

.mockup-hints {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 10px;
    color: var(--color-text-secondary);
}

.mockup-key {
    background: rgba(0,0,0,0.04);
    padding: 3px 6px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 500;
    color: var(--color-text-secondary);
    border: 1px solid rgba(0,0,0,0.06);
}

.mockup-hint-label {
    font-size: 10px;
    color: #aeaeb2;
    margin-left: 2px;
    margin-right: 10px;
}

.mockup-actions {
    display: flex;
    gap: 8px;
}

.mockup-btn-cancel, .mockup-btn-save {
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all 0.15s ease;
}

.mockup-btn-cancel {
    background: rgba(0,0,0,0.04);
    border: 1px solid rgba(0,0,0,0.08);
    color: var(--color-text);
}

.mockup-btn-save {
    background: linear-gradient(135deg, var(--color-primary) 0%, #0058b0 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(0,113,227,0.3);
    border: 1px solid rgba(255,255,255,0.2);
}

.mockup-btn-save:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(0,113,227,0.35);
}

/* Problem Section */
.problem {
    padding: 100px 24px;
    background: var(--color-background-alt);
}

.problem h2 {
    font-size: 40px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.problem-card {
    background: var(--color-background);
    padding: 32px 24px;
    border-radius: var(--radius-md);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.problem-icon {
    width: 64px;
    height: 64px;
    min-width: 64px;
    min-height: 64px;
    max-width: 64px;
    max-height: 64px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a5a 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.problem-icon svg {
    width: 32px !important;
    height: 32px !important;
    min-width: 32px;
    min-height: 32px;
    max-width: 32px;
    max-height: 32px;
    color: white;
    stroke: white !important;
    flex-shrink: 0;
}

.problem-card h3 {
    font-size: 17px;
    margin-bottom: 8px;
}

.problem-card p {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.problem-result {
    text-align: center;
    font-size: 18px;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* Features Section */
.features {
    padding: 100px 24px;
}

.features h2, .how-it-works h2, .pdf-output h2, .privacy h2, .download h2 {
    font-size: 40px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
}

.section-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--color-text-secondary);
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    text-align: center;
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    background: var(--color-background-alt);
    transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: var(--color-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

.feature-card h3 {
    font-size: 21px;
    margin-bottom: 12px;
}

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

.feature-card kbd {
    display: inline-block;
    padding: 2px 8px;
    background: white;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 13px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.feature-tip {
    margin-top: 12px;
    font-size: 13px;
    color: var(--color-text-secondary);
    font-style: italic;
}

.feature-tip a {
    color: var(--color-primary);
    text-decoration: none;
}

.feature-tip a:hover {
    text-decoration: underline;
}

/* How It Works Section */
.how-it-works {
    padding: 100px 24px;
    background: var(--color-background-alt);
}

.folder-demo {
    display: flex;
    gap: 60px;
    align-items: center;
    max-width: 900px;
    margin: 0 auto;
}

.folder-tree {
    flex: 1;
    background: var(--color-background);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.folder-item {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-family: var(--font-mono);
}

.folder-icon {
    font-size: 16px;
}

.folder-root {
    font-weight: 600;
}

.folder-matter {
    padding-left: 24px;
    color: var(--color-primary);
    font-weight: 500;
}

.folder-sub {
    padding-left: 48px;
    color: var(--color-text-secondary);
}

.highlight-folder {
    color: var(--color-primary) !important;
    font-weight: 500;
}

.folder-badge {
    background: var(--color-primary);
    color: white;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: 8px;
    font-family: var(--font-sans);
}

.folder-explanation {
    flex: 1;
}

.folder-explanation h3 {
    font-size: 24px;
    margin-bottom: 20px;
}

.folder-explanation ul {
    list-style: none;
}

.folder-explanation li {
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 15px;
}

.folder-explanation li:last-child {
    border-bottom: none;
}

/* PDF Output Section */
.pdf-output {
    padding: 100px 24px;
}

.pdf-demo {
    display: flex;
    gap: 60px;
    align-items: flex-start;
    max-width: 1000px;
    margin: 0 auto;
}

.pdf-mockup {
    flex: 1;
    max-width: 400px;
}

.pdf-page {
    background: white;
    border-radius: 4px;
    box-shadow: var(--shadow-lg);
    padding: 40px;
    font-size: 13px;
}

.pdf-firm {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.pdf-meta {
    margin-bottom: 20px;
}

.pdf-row {
    display: flex;
    padding: 4px 0;
}

.pdf-label {
    width: 80px;
    color: var(--color-text-secondary);
    font-size: 11px;
}

.pdf-value {
    font-size: 12px;
}

.pdf-divider {
    height: 1px;
    background: var(--color-border);
    margin: 20px 0;
}

.pdf-type {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 16px;
}

.pdf-body {
    font-size: 12px;
    line-height: 1.6;
    color: var(--color-text);
}

.pdf-footer {
    text-align: center;
    font-size: 10px;
    color: var(--color-text-secondary);
    margin-top: 40px;
}

.pdf-features {
    flex: 1;
}

.pdf-features h3 {
    font-size: 18px;
    margin-bottom: 12px;
    margin-top: 32px;
}

.pdf-features h3:first-child {
    margin-top: 0;
}

.pdf-features code {
    display: block;
    background: var(--color-background-alt);
    padding: 12px 16px;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 13px;
    word-break: break-all;
}

.note-types {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.note-types li {
    padding: 8px 12px;
    background: var(--color-background-alt);
    border-radius: 6px;
    font-size: 14px;
}

/* Privacy Section */
.privacy {
    padding: 100px 24px;
    background: var(--color-text);
    color: white;
}

.privacy h2 {
    color: white;
}

.privacy-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-top: 60px;
}

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

.privacy-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.privacy-icon svg {
    width: 40px;
    height: 40px;
    color: rgba(255,255,255,0.9);
}

.privacy-item h3 {
    font-size: 17px;
    margin-bottom: 8px;
}

.privacy-item p {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
}

/* Download Section */
.download {
    padding: 100px 24px;
    background: var(--color-background-alt);
}

.download-options {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
}

.download-card {
    display: flex;
    align-items: center;
    gap: 20px;
    background: var(--color-background);
    padding: 24px 40px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    text-decoration: none;
    color: var(--color-text);
    transition: transform 0.2s, box-shadow 0.2s;
}

.download-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.download-coming-soon {
    pointer-events: none;
    opacity: 0.8;
}

.download-coming-soon .download-icon svg {
    color: var(--color-primary);
}

.download-icon svg {
    width: 48px;
    height: 48px;
}

.download-info h3 {
    font-size: 18px;
    margin-bottom: 4px;
}

.download-info p {
    font-size: 14px;
    color: var(--color-text-secondary);
}

.download-note {
    text-align: center;
    font-size: 14px;
    color: var(--color-text-secondary);
}

/* Footer */
.footer {
    padding: 40px 24px;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--color-text);
}

.footer-icon {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 14px;
}

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

.footer-copyright {
    text-align: center;
    font-size: 13px;
    color: var(--color-text-secondary);
}

.footer-copyright a {
    color: var(--color-text-secondary);
    text-decoration: none;
}

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

/* Responsive */
@media (max-width: 1024px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 120px;
    }

    .hero-content {
        max-width: 100%;
    }

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

    .hero-mockup {
        max-width: 100%;
    }

    .problem-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    .folder-demo {
        flex-direction: column;
    }

    .pdf-demo {
        flex-direction: column;
    }

    .privacy-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .problem-grid {
        grid-template-columns: 1fr;
    }

    .privacy-grid {
        grid-template-columns: 1fr;
    }

    .nav-links {
        display: none;
    }

    .footer-content {
        flex-direction: column;
        gap: 16px;
    }
}