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

:root {
    /* Dark Theme Colors - Based on ShopCalc Design */
    --bg-primary: #1a1d29;
    --bg-secondary: #242736;
    --bg-card: #2c2f3e;
    --text-primary: #ffffff;
    --text-secondary: #b4b8c8;
    --accent-primary: #5eb3e4;
    --accent-hover: #4a9fd4;
    --accent-glow: rgba(94, 179, 228, 0.2);
    --border-color: #3a3d4e;
    --success: #4caf50;
    --error: #f44336;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.nav {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo img {
    width: 48px;
    height: 48px;
    border-radius: 12px;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    text-align: center;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.375rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.6;
}

.cta-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.cta-button {
    background: var(--accent-primary);
    color: var(--text-primary);
    border: none;
    padding: 18px 48px;
    font-size: 1.125rem;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 24px var(--accent-glow);
}

.cta-button:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px var(--accent-glow);
}

.cta-note {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Features Section */
.features {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 4rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.375rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

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

/* App Preview Section */
.app-preview {
    padding: 80px 0;
    background: var(--bg-primary);
}

.preview-container {
    display: flex;
    justify-content: center;
    margin-bottom: 3rem;
}

.screenshot-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.screenshot-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.preview-image {
    max-width: 100%;
    width: 100%;
    max-width: 320px;
    height: auto;
    border-radius: 24px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.preview-image:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.6);
}

.screenshot-caption {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    text-align: center;
    margin-top: 0.5rem;
}

.preview-features {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 3rem;
}

.preview-feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.125rem;
}

.check-icon {
    width: 28px;
    height: 28px;
    background: var(--accent-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

/* Waitlist Section */
.waitlist {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

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

.waitlist-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.6;
}

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

.form-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.email-input {
    flex: 1;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 16px 20px;
    font-size: 1rem;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.email-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px var(--accent-glow);
}

.email-input::placeholder {
    color: var(--text-secondary);
}

.submit-button {
    background: var(--accent-primary);
    color: var(--text-primary);
    border: none;
    padding: 16px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    min-width: 180px;
}

.submit-button:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

.submit-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.loader {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--text-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: inline-block;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.form-message {
    padding: 12px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
    margin-top: 1rem;
    display: none;
}

.form-message.success {
    background: rgba(76, 175, 80, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
    display: block;
}

.form-message.error {
    background: rgba(244, 67, 54, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
    display: block;
}

.privacy-note {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    padding: 60px 0 40px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

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

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-logo img {
    width: 40px;
    height: 40px;
    border-radius: 10px;
}

.footer-text {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.3s ease;
}

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

.footer-copyright {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Privacy Policy Page */
.privacy-policy {
    padding: 80px 0;
    background: var(--bg-primary);
    min-height: calc(100vh - 200px);
}

.privacy-content {
    max-width: 800px;
    margin: 0 auto;
    color: var(--text-primary);
}

.privacy-content h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

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

.privacy-section h2 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
    padding-top: 1rem;
}

.privacy-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.privacy-section p {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.privacy-section ul {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.privacy-section li {
    margin-bottom: 0.75rem;
}

.privacy-section strong {
    color: var(--text-primary);
    font-weight: 600;
}

.privacy-section a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.privacy-section a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

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

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

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

    .form-group {
        flex-direction: column;
    }

    .submit-button {
        width: 100%;
    }

    .preview-features {
        flex-direction: column;
        align-items: center;
    }

    .screenshot-gallery {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

    .privacy-content h1 {
        font-size: 2rem;
    }

    .privacy-section h2 {
        font-size: 1.5rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 80px 0 60px;
    }

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

    .logo {
        font-size: 1.25rem;
    }

    .logo img {
        width: 40px;
        height: 40px;
    }

    .screenshot-gallery {
        gap: 2rem;
    }

    .preview-image {
        max-width: 280px;
    }

    .privacy-content h1 {
        font-size: 1.75rem;
    }

    .privacy-section h2 {
        font-size: 1.25rem;
    }

    .privacy-section h3 {
        font-size: 1.125rem;
    }
}