/* LinkGuard Landing Page Styles */

/* ===== CSS VARIABLES ===== */
:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --success: #10b981;
    --warning: #fbbf24;
    --danger: #ef4444;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-900: #111827;
    --white: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--gray-900);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ===== HEADER ===== */
.header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.9);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--gray-900);
    text-decoration: none;
}

.nav {
    display: flex;
    gap: 24px;
}

.nav-link {
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 500;
    font-size: 15px;
    transition: color 0.2s;
}

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

/* ===== HERO SECTION ===== */
.hero {
    padding: 80px 0 100px;
    text-align: center;
    background: linear-gradient(to bottom, var(--white), var(--gray-50));
}

.hero-badge {
    display: inline-block;
    background: var(--success);
    color: var(--white);
    padding: 6px 16px;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--gray-900);
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--gray-600);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.hero-notice {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--gray-100);
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 14px;
    color: var(--gray-700);
}

.hero-notice svg {
    flex-shrink: 0;
    color: var(--primary);
}

/* ===== BUTTONS ===== */
.button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

.button-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: var(--shadow);
}

.button-primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.button-secondary {
    background: var(--white);
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.button-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

/* ===== SECTIONS ===== */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 48px;
    color: var(--gray-900);
}

/* ===== FEATURES SECTION ===== */
.features {
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    max-width: 1000px;
    margin: 0 auto;
}

.feature-card {
    text-align: center;
    padding: 32px 24px;
}

.feature-icon {
    width: 56px;
    height: 56px;
    background: var(--primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--white);
}

.feature-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--gray-900);
}

.feature-description {
    font-size: 16px;
    color: var(--gray-600);
    line-height: 1.6;
}

/* ===== STATUS SECTION ===== */
.status {
    background: var(--gray-50);
    padding: 60px 0;
}

.status .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.status-card {
    background: var(--white);
    border: 2px solid var(--success);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
}

.status-card.warning {
    border-color: var(--warning);
}

.status-card.danger {
    border-color: var(--danger);
}

.status-badge {
    display: inline-block;
    background: var(--success);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 600;
    margin-bottom: 12px;
    font-size: 14px;
}

.status-card.warning .status-badge {
    background: var(--warning);
    color: var(--gray-900);
}

.status-card.danger .status-badge {
    background: var(--danger);
}

.status-text {
    font-size: 14px;
    color: var(--gray-600);
}

/* ===== CHECKS SECTION ===== */
.checks {
    background: var(--white);
}

.checks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto 48px;
}

.check-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.check-icon {
    flex-shrink: 0;
    color: var(--success);
}

.check-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--gray-900);
}

.check-description {
    font-size: 15px;
    color: var(--gray-600);
}

.coming-soon {
    background: var(--gray-50);
    border-radius: 12px;
    padding: 32px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.coming-soon-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--gray-900);
}

.coming-soon-list {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.coming-soon-item {
    display: inline-block;
    background: var(--white);
    color: var(--gray-700);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--gray-300);
}

/* ===== PRIVACY SECTION ===== */
.privacy-section {
    background: var(--gray-900);
    color: var(--white);
}

.privacy-section .section-title {
    color: var(--white);
}

.privacy-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.privacy-text {
    font-size: 18px;
    color: var(--gray-300);
    margin-bottom: 32px;
    line-height: 1.7;
}

.privacy-features {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 32px;
}

.privacy-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--white);
    font-weight: 500;
}

.privacy-feature svg {
    color: var(--success);
}

/* ===== CTA SECTION ===== */
.cta {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    text-align: center;
}

.cta-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta-text {
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto 32px;
    opacity: 0.95;
    line-height: 1.7;
}

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

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

.cta .button-primary:hover {
    background: var(--gray-100);
}

.cta .button-secondary {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--white);
}

.cta .button-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 12px;
}

.footer-brand .logo svg path:first-child {
    fill: var(--primary);
}

.footer-tagline {
    color: var(--gray-400);
    font-size: 15px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-heading {
    font-size: 14px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-link {
    display: block;
    color: var(--gray-400);
    text-decoration: none;
    font-size: 15px;
    margin-bottom: 12px;
    transition: color 0.2s;
}

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--gray-700);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-copyright,
.footer-credit {
    font-size: 14px;
    color: var(--gray-500);
}

.footer-credit a {
    color: var(--primary);
    text-decoration: none;
}

.footer-credit a:hover {
    text-decoration: underline;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .nav {
        gap: 16px;
    }
    
    .nav-link {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 48px 0 60px;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .button {
        width: 100%;
        justify-content: center;
    }
    
    section {
        padding: 48px 0;
    }
    
    .cta-title {
        font-size: 32px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}