/**
 * Planet AI - mac.com Inspired Design
 */

:root {
    --primary: #00d4ff;
    --primary-dark: #0099cc;
    --accent: #7c3aed;
    --bg: #000000;
    --bg-secondary: #0a0a0a;
    --bg-card: #111111;
    --bg-elevated: #1a1a1a;
    --text: #ffffff;
    --text-secondary: #86868b;
    --text-tertiary: #6e6e73;
    --border: #2a2a2a;
    --border-light: #3a3a3a;
    --gradient-start: #00d4ff;
    --gradient-end: #7c3aed;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Inter, -apple-system, BlinkMacSystemFont, SF Pro Display, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Messages */
#message-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.message {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 16px 24px;
    border-radius: 12px;
    margin-bottom: 10px;
    animation: slideIn 0.3s ease;
    max-width: 400px;
    backdrop-filter: blur(20px);
}

.message.success {
    border-color: #10b981;
    background: rgba(16, 185, 129, 0.15);
}

.message.error {
    border-color: #ef4444;
    background: rgba(239, 68, 68, 0.15);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Navigation */
.nav-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

.nav-logo img {
    height: 32px;
    width: auto;
    filter: brightness(1.2) contrast(1.1);
    
    
}

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

.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.nav-links a:hover {
    opacity: 1;
}

/* Hero Section - mac.com Style */
.hero-mac {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    overflow: hidden;
    padding-top: 52px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.hero-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        180deg,
        rgba(0, 0, 0, 0.3) 0%,
        rgba(0, 0, 0, 0.5) 50%,
        rgba(0, 0, 0, 0.9) 100%
    );
}

.hero-content-mac {
    position: relative;
    z-index: 1;
    max-width: 900px;
    padding: 0 24px;
    margin-top: -5vh;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 32px;
}

.pulse-dot {
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.9); }
}

.hero-title {
    font-size: clamp(48px, 8vw, 96px);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: clamp(18px, 2.5vw, 24px);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    font-weight: 400;
    line-height: 1.5;
}

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

.cta-primary {
    background: var(--primary);
    color: #000;
    padding: 16px 32px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.cta-primary:hover {
    transform: scale(1.02);
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.4);
}

.cta-primary.full {
    width: 100%;
}

.cta-secondary {
    background: transparent;
    color: var(--text);
    padding: 16px 32px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.cta-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-secondary);
    animation: bounce 2s infinite;
    cursor: pointer;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(10px); }
}

/* Stats Bar */
.stats-bar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 48px 0;
}

.stats-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 120px;
    text-align: center;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.stat-number {
    font-size: 40px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Section Styles */
.section-header {
    margin-bottom: 48px;
}

.section-header.center {
    text-align: center;
}

.section-eyebrow {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
}

.section-header h2 {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 500px;
}

.section-header.center .section-subtitle {
    margin: 0 auto;
}

/* Feed Section */
.feed-section {
    padding: 100px 0;
    background: var(--bg);
}

.feed-controls {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

.search-input {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 16px 20px;
    border-radius: 12px;
    color: var(--text);
    font-size: 16px;
    width: 100%;
    max-width: 400px;
    transition: border-color 0.2s;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary);
}

.search-input::placeholder {
    color: var(--text-tertiary);
}

.category-filters {
.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
    display: flex;
.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
    flex-wrap: wrap;
.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
    gap: 8px;
.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
}
.category-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.category-btn {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 10px 20px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.category-btn:hover,
.category-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #000;
}

/* Articles Grid */
.articles-grid {
    display: grid;
    gap: 16px;
}

.article-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 28px;
    transition: all 0.3s ease;
}

.article-card:hover {
    border-color: var(--border-light);
    transform: translateY(-2px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.category {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.category.engineering { background: rgba(139, 92, 246, 0.1); color: #a78bfa; }
.category.research { background: rgba(236, 72, 153, 0.1); color: #f472b6; }
.category.opinion { background: rgba(245, 158, 11, 0.1); color: #fbbf24; }
.category.news { background: rgba(16, 185, 129, 0.1); color: #34d399; }

.badge {
    background: var(--bg-elevated);
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 12px;
    color: var(--text-secondary);
}

.badge.code {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
}

.source {
    color: var(--text-tertiary);
    font-size: 13px;
}

.article-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.4;
    letter-spacing: -0.01em;
}

.article-title a {
    color: var(--text);
    text-decoration: none;
    transition: color 0.2s;
}

.article-title a:hover {
    color: var(--primary);
}

.article-summary {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.article-footer {
    display: flex;
    gap: 16px;
    font-size: 14px;
    color: var(--text-tertiary);
}

.author {
    color: var(--primary);
    font-weight: 500;
}

/* Loading & Empty States */
.loading,
.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-secondary);
}

.empty-state h3 {
    color: var(--text);
    margin-bottom: 8px;
    font-size: 20px;
}

.btn-load-more {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 16px 40px;
    border-radius: 100px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    display: block;
    margin: 48px auto 0;
    transition: all 0.3s;
}

.btn-load-more:hover {
    border-color: var(--primary);
    background: var(--bg-elevated);
}

/* Sources Section */
.sources-section {
    padding: 100px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.sources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 16px;
}

.source-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s;
}

.source-item:hover {
    border-color: var(--border-light);
    transform: translateY(-2px);
}

.source-item a {
    color: var(--text);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
}

.source-item a:hover {
    color: var(--primary);
}

.article-count {
    color: var(--text-tertiary);
    font-size: 14px;
    font-weight: 500;
}

/* Submit Hero Section */
.submit-hero {
    padding: 120px 0;
    background: var(--bg);
}

.submit-card-mac {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 64px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.submit-content {
    max-width: 400px;
}

.submit-content h2 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.submit-content > p {
    color: var(--text-secondary);
    font-size: 18px;
    margin-bottom: 32px;
}

.submit-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 15px;
}

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

/* Submit Form */
.submit-form-mac {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 14px 18px;
    border-radius: 12px;
    color: var(--text);
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.2s;
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-tertiary);
}

/* Footer */
.footer-mac {
    padding: 48px 0;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.footer-logo {
    height: 28px;
    width: auto;
    margin-bottom: 8px;
    filter: brightness(1.2) contrast(1.1);
    
    
}

.footer-brand p {
    color: var(--text-tertiary);
    font-size: 14px;
}

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

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

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

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    color: var(--text-tertiary);
    font-size: 13px;
}

/* Responsive */
@media (max-width: 968px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .hero-description {
        font-size: 18px;
    }
    
    .stats-grid {
        flex-direction: column;
        gap: 32px;
    }
    
    .stat-number {
        font-size: 32px;
    }
    
    .submit-card-mac {
        grid-template-columns: 1fr;
        padding: 40px;
        gap: 40px;
    }
    
    .submit-content {
        max-width: 100%;
        text-align: center;
    }
    
    .submit-features {
        align-items: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 32px;
    }
    
    .hero-cta {
        flex-direction: column;
        width: 100%;
    }
    
    .cta-primary,
    .cta-secondary {
        width: 100%;
    }
    
    .stats-bar {
        padding: 32px 0;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    
    .stat-number {
        font-size: 24px;
    }
    
    .feed-section,
    .sources-section {
        padding: 60px 0;
    }
    
    .submit-hero {
        padding: 60px 0;
    }
    
    .submit-card-mac {
        padding: 24px;
    }
    
    .article-card {
        padding: 20px;
    }
    
    .article-title {
        font-size: 18px;
    }
}

/* Authors Section */
.authors-section {
    padding: 100px 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
}

.authors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.author-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.3s ease;
}

.author-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
}

.author-avatar {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: white;
    flex-shrink: 0;
}

.author-info {
    flex: 1;
    min-width: 0;
}

.author-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.author-source {
    font-size: 13px;
    color: var(--text-tertiary);
    margin-bottom: 8px;
}

.author-stats {
    display: flex;
    gap: 16px;
    font-size: 14px;
}

.author-stat {
    color: var(--text-secondary);
}

.author-stat strong {
    color: var(--primary);
    font-weight: 600;
}

/* Vendors Section */
.vendors-section {
    padding: 100px 0;
    background: var(--bg);
}

.vendor-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.vendor-category {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 28px;
}

.vendor-category h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.vendor-icon {
    font-size: 24px;
}

.vendor-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.vendor-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg);
    border-radius: 10px;
    border: 1px solid var(--border);
    transition: all 0.2s;
}

.vendor-item:hover {
    border-color: var(--primary);
}

.vendor-name {
    font-weight: 500;
    color: var(--text);
}

.vendor-count {
    background: rgba(0, 212, 255, 0.1);
    color: var(--primary);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

/* RSS Feed Link Animation */
.nav-links a[href="/rss.xml"]:hover {
    color: #ff8800;
}

.nav-links a[href="/rss.xml"] svg {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

@media (max-width: 968px) {
    .vendor-categories {
        grid-template-columns: 1fr;
    }
    
    .authors-grid {
        grid-template-columns: 1fr;
    }
}

/* Translate button */
.translate-btn {
    background: transparent;
    border: 1px solid rgba(0, 212, 255, 0.3);
    color: #00d4ff;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    margin-left: auto;
    transition: all 0.2s;
}

.translate-btn:hover {
    background: rgba(0, 212, 255, 0.1);
    border-color: #00d4ff;
}

.translate-btn:disabled {
    opacity: 0.5;
    cursor: wait;
}

/* Star Rating Styles */
.badge.rating {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #1e293b;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.85rem;
    margin-right: 0.5rem;
}

/* Article Card Rating Container */
.article-rating-container {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid rgba(148, 163, 184, 0.1);
}

/* Inline Rating Widget */
.article-rating-container {
    margin: 10px 0;
    padding: 8px 0;
    border-top: 1px solid var(--border);
}

.inline-rating {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.inline-rating .avg-rating {
    font-weight: 600;
    color: #f59e0b;
}

.inline-rating .rating-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.inline-rating .star-input {
    display: flex;
    gap: 4px;
}

.inline-rating .star-btn {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: #cbd5e1;
    cursor: pointer;
    padding: 2px 4px;
    transition: color 0.2s;
}

.inline-rating .star-btn:hover,
.inline-rating .star-btn.active {
    color: #f59e0b;
}

.inline-rating .star-btn:hover {
    transform: scale(1.1);
}