/* ScreenShield - CSS */

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

:root {
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-600: #4B5563;
    --gray-800: #1F2937;
    --gray-900: #111827;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--gray-50);
}

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

/* Navbar */
.navbar {
    background: white;
    border-bottom: 1px solid var(--gray-200);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-links a {
    color: var(--gray-600);
    text-decoration: none;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

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

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

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-800);
}

.btn-secondary:hover {
    background: var(--gray-300);
}

.btn-large {
    padding: 15px 30px;
    font-size: 1.1rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, #7C3AED 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero .subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Features */
.features {
    padding: 80px 0;
    background: white;
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 50px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    padding: 30px;
    border-radius: 12px;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.feature-card h3 {
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--gray-600);
}

/* Use Cases */
.use-cases {
    padding: 80px 0;
    background: var(--gray-50);
}

.use-cases h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 50px;
}

.use-case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.use-case {
    text-align: center;
    padding: 30px;
}

.use-case h3 {
    margin-bottom: 10px;
}

.use-case p {
    color: var(--gray-600);
}

/* Pricing */
.pricing {
    padding: 80px 0;
    background: white;
}

.pricing h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 50px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    padding: 40px 30px;
    border-radius: 12px;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    text-align: center;
}

.pricing-card.featured {
    background: var(--gray-900);
    color: white;
    transform: scale(1.05);
}

.pricing-card h3 {
    margin-bottom: 15px;
}

.pricing-card .price {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.pricing-card .price span {
    font-size: 1rem;
    font-weight: 400;
    opacity: 0.7;
}

.pricing-card ul {
    list-style: none;
    margin-bottom: 30px;
}

.pricing-card li {
    padding: 10px 0;
    border-bottom: 1px solid var(--gray-200);
}

.pricing-card.featured li {
    border-color: var(--gray-700);
}

/* CTA */
.cta {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary) 0%, #7C3AED 100%);
    color: white;
    text-align: center;
}

.cta h2 {
    font-size: 2rem;
    margin-bottom: 15px;
}

.cta p {
    margin-bottom: 30px;
    opacity: 0.9;
}

/* Footer */
footer {
    padding: 30px 0;
    background: var(--gray-900);
    color: var(--gray-300);
    text-align: center;
}

/* Analyze Page */
.analyze-page {
    padding: 50px 0;
    min-height: calc(100vh - 70px);
}

.analyze-page h1 {
    text-align: center;
    margin-bottom: 10px;
}

.analyze-page .subtitle {
    text-align: center;
    color: var(--gray-600);
    margin-bottom: 40px;
}

.upload-area {
    background: white;
    border: 2px dashed var(--gray-300);
    border-radius: 12px;
    padding: 60px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    max-width: 600px;
    margin: 0 auto 30px;
}

.upload-area:hover, .upload-area.dragover {
    border-color: var(--primary);
    background: var(--gray-50);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.upload-area .link {
    color: var(--primary);
    text-decoration: underline;
}

.upload-hint {
    color: var(--gray-600);
    font-size: 0.9rem;
    margin-top: 10px;
}

.preview-area {
    max-width: 600px;
    margin: 0 auto 30px;
    text-align: center;
}

.preview-area img {
    max-width: 100%;
    max-height: 400px;
    border-radius: 8px;
    margin-bottom: 15px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

#analyzeBtn {
    display: block;
    margin: 0 auto 30px;
}

/* Loading */
.loading {
    text-align: center;
    padding: 40px;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

/* Results */
.results {
    max-width: 800px;
    margin: 0 auto;
}

.results h2 {
    text-align: center;
    margin-bottom: 30px;
}

.verdict-card {
    background: white;
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    margin-bottom: 20px;
    border: 2px solid var(--gray-200);
}

.verdict-score {
    font-size: 4rem;
    font-weight: 700;
}

.verdict-label {
    font-size: 1.5rem;
    margin-top: 10px;
}

.verdict-authentic {
    border-color: var(--success);
    background: #ECFDF5;
}

.verdict-authentic .verdict-score { color: var(--success); }

.verdict-suspicious {
    border-color: var(--warning);
    background: #FFFBEB;
}

.verdict-suspicious .verdict-score { color: var(--warning); }

.verdict-manipulated {
    border-color: var(--danger);
    background: #FEF2F2;
}

.verdict-manipulated .verdict-score { color: var(--danger); }

.summary-card, .flags-card, .details-card, .metadata-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 20px;
    border: 1px solid var(--gray-200);
}

.summary-card h3, .flags-card h3, .details-card h3, .metadata-card h3 {
    margin-bottom: 15px;
    color: var(--gray-900);
}

.flag-item {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.flag-low { background: #FEF3C7; }
.flag-medium { background: #FED7AA; }
.flag-high { background: #FECACA; }

.flag-severity {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 3px 8px;
    border-radius: 4px;
    background: rgba(0,0,0,0.1);
}

.flag-issue {
    flex: 1;
}

.flag-location {
    font-size: 0.9rem;
    color: var(--gray-600);
}

.no-flags {
    color: var(--success);
    padding: 15px;
    background: #ECFDF5;
    border-radius: 8px;
}

.metadata-card pre {
    background: var(--gray-100);
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .pricing-card.featured { transform: none; }
}