:root {
    --bg-primary: #fafbfc;
    --bg-secondary: #ffffff;
    --bg-dark: #1a2332;
    --text-primary: #1a2332;
    --text-secondary: #5a6677;
    --text-light: #8a94a6;
    --accent: #2d7dd2;
    --accent-light: #e8f2fc;
    --accent-hover: #1b5fa8;
    --status-normal: #4ade80;
    --status-warning: #fbbf24;
    --status-urgent: #f87171;
    --status-overdue: #a855f7;
    --border: #e5e8ed;
    --shadow: 0 4px 24px rgba(26, 35, 50, 0.08);
    --shadow-lg: 0 12px 48px rgba(26, 35, 50, 0.12);
    --radius: 16px;
    --radius-sm: 8px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3 {
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 700;
    line-height: 1.2;
}

/* Announcement Banner */
.announcement-banner {
    background: var(--accent-light);
    border-bottom: 1px solid #d0e3f5;
    padding: 10px 24px;
    text-align: center;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 101;
}

.announcement-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.announcement-dot {
    width: 8px;
    height: 8px;
    background: var(--status-normal);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

#typing-text {
    font-weight: 600;
    color: var(--text-primary);
}

.typing-cursor {
    font-weight: 400;
    color: var(--accent);
    animation: blink 0.7s infinite;
    margin-left: 1px;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

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

/* Navigation */
nav {
    position: fixed;
    top: 40px; /* height of announcement banner */
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(250, 251, 252, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Fraunces', serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(45, 125, 210, 0.3);
}

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

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.05rem;
    border-radius: var(--radius);
}

/* Hero Section */
.hero {
    padding: 200px 24px 100px; /* extra 40px for announcement banner */
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 150%;
    background: radial-gradient(ellipse, var(--accent-light) 0%, transparent 60%);
    pointer-events: none;
    opacity: 0.7;
}

.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    position: relative;
}

.hero-content {
    animation: fadeInUp 0.8s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.hero h1 span {
    color: var(--accent);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 520px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-trust {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-light);
    font-size: 0.9rem;
}

.hero-trust svg {
    color: var(--status-normal);
}

/* App Preview */
.app-preview {
    position: relative;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.app-preview img {
    width: 100%;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}

/* Placeholder Images */
.placeholder-image {
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e1 100%);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 40px;
    min-height: 400px;
    border: 2px dashed #94a3b8;
    text-align: center;
}

.placeholder-image.dark {
    background: linear-gradient(135deg, #334155 0%, #1e293b 100%);
    border-color: #475569;
}

.placeholder-image.dark .placeholder-label {
    color: #94a3b8;
}

.placeholder-image.dark .placeholder-filename {
    color: #e2e8f0;
}

.placeholder-icon {
    width: 64px;
    height: 64px;
    background: rgba(255,255,255,0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
}

.placeholder-label {
    color: #64748b;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.placeholder-filename {
    color: #334155;
    font-size: 1rem;
    font-weight: 500;
    background: rgba(255,255,255,0.5);
    padding: 8px 16px;
    border-radius: 6px;
}

.placeholder-description {
    color: #64748b;
    font-size: 0.9rem;
    max-width: 280px;
    line-height: 1.5;
}

.placeholder-image.dark .placeholder-description {
    color: #94a3b8;
}

.placeholder-image.small {
    min-height: 320px;
    padding: 32px;
}

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

.section-inner {
    max-width: 1000px;
    margin: 0 auto;
}

.section-label {
    display: inline-block;
    color: var(--accent);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.problem h2 {
    font-size: 2.5rem;
    margin-bottom: 24px;
    max-width: 700px;
}

.problem-description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 640px;
    margin-bottom: 48px;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.problem-card {
    background: var(--bg-primary);
    padding: 32px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.problem-icon {
    width: 48px;
    height: 48px;
    background: #fee2e2;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.problem-card h3 {
    font-family: 'DM Sans', sans-serif;
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.problem-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

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

.features-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.features-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 64px;
}

.features h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.features-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.feature-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    margin-bottom: 80px;
}

.feature-showcase:nth-child(odd) {
    direction: rtl;
}

.feature-showcase:nth-child(odd) > * {
    direction: ltr;
}

.feature-content h3 {
    font-size: 1.75rem;
    margin-bottom: 16px;
}

.feature-content p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 24px;
}

.feature-list {
    list-style: none;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.feature-list svg {
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 2px;
}

.feature-visual {
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Pricing Section */
.pricing {
    padding: 100px 24px;
    background: var(--bg-dark);
    color: white;
}

.pricing-inner {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.pricing .section-label {
    color: #7dd3fc;
}

.pricing h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.pricing-description {
    color: rgba(255,255,255,0.7);
    font-size: 1.1rem;
    max-width: 500px;
    margin: 0 auto 48px;
}

.pricing-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    padding: 48px;
    max-width: 480px;
    margin: 0 auto;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    margin-bottom: 8px;
}

.price-currency {
    font-size: 1.5rem;
    color: rgba(255,255,255,0.7);
}

.price-amount {
    font-family: 'Fraunces', serif;
    font-size: 4rem;
    font-weight: 700;
}

.price-period {
    color: rgba(255,255,255,0.5);
    margin-bottom: 24px;
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin-bottom: 32px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.8);
}

.pricing-features svg {
    color: var(--status-normal);
}

.pricing-card .btn-primary {
    width: 100%;
    justify-content: center;
}

/* CTA Section */
.cta {
    padding: 100px 24px;
    text-align: center;
}

.cta-inner {
    max-width: 600px;
    margin: 0 auto;
}

.cta h2 {
    font-size: 2.25rem;
    margin-bottom: 16px;
}

.cta p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Footer */
footer {
    padding: 48px 24px;
    border-top: 1px solid var(--border);
}

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

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

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
}

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

.footer-copy {
    color: var(--text-light);
    font-size: 0.85rem;
}

/* Page Styles */
.page {
    padding: 180px 24px 100px; /* extra 40px for announcement banner */
    min-height: 80vh;
}

.page-inner {
    max-width: 800px;
    margin: 0 auto;
}

.page h1 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.page-description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: 48px;
}

.page-content h2 {
    font-size: 1.5rem;
    margin: 40px 0 16px;
}

.page-content p {
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.page-content ul, .page-content ol {
    margin-bottom: 16px;
    padding-left: 24px;
    color: var(--text-secondary);
}

.page-content li {
    margin-bottom: 8px;
}

/* Forms */
.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s;
}

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

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-group .required {
    color: var(--status-urgent);
}

/* Contact Info */
.contact-info {
    margin-top: 48px;
    padding-top: 48px;
    border-top: 1px solid var(--border);
}

.contact-info h3 {
    font-family: 'DM Sans', sans-serif;
    font-size: 1.1rem;
    margin-bottom: 16px;
}

.contact-info p {
    color: var(--text-secondary);
}

.contact-info a {
    color: var(--accent);
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* System Requirements */
.system-requirements {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    margin-top: 48px;
}

.system-requirements h3 {
    font-family: 'DM Sans', sans-serif;
    font-size: 1.1rem;
    margin-bottom: 16px;
}

.system-requirements ul {
    list-style: none;
    padding: 0;
}

.system-requirements li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    color: var(--text-secondary);
}

/* FAQ */
.faq {
    margin-top: 64px;
}

.faq h2 {
    text-align: center;
    margin-bottom: 40px;
}

.faq-item {
    border-bottom: 1px solid var(--border);
    padding: 24px 0;
}

.faq-item h3 {
    font-family: 'DM Sans', sans-serif;
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.faq-item p {
    color: var(--text-secondary);
    margin: 0;
}

/* Responsive */
@media (max-width: 900px) {
    .announcement-banner {
        padding: 8px 16px;
    }

    .announcement-inner {
        font-size: 0.8rem;
    }

    nav {
        top: 35px; /* smaller banner on mobile */
    }

    .mobile-menu-btn {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 16px 24px;
        gap: 0;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        padding: 12px 0;
        border-bottom: 1px solid var(--border);
    }

    .nav-links a:last-child {
        border-bottom: none;
        margin-top: 8px;
    }

    .nav-links .btn-primary {
        text-align: center;
        justify-content: center;
    }

    .hero {
        padding-top: 160px;
    }

    .page {
        padding-top: 140px;
    }

    .hero-inner,
    .feature-showcase {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .feature-showcase:nth-child(odd) {
        direction: ltr;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

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

    .footer-inner {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }

    .cta-buttons {
        flex-direction: column;
    }

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