/* ==========================================
   PERSONA FINDER - OSINT TOOLKIT
   Cybersecurity Dark Theme
   ========================================== */

/* CSS Variables */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #16161f;
    --bg-elevated: #1a1a25;
    
    --accent-cyan: #00d4ff;
    --accent-green: #00ff88;
    --accent-purple: #8b5cf6;
    --accent-orange: #ff6b35;
    --accent-red: #ff4757;
    
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    
    --border-color: #27272a;
    --border-glow: rgba(0, 212, 255, 0.3);
    
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #00ff88 100%);
    --gradient-card: linear-gradient(180deg, rgba(0, 212, 255, 0.05) 0%, transparent 100%);
    
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.2);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);
    
    --font-main: 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

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

/* ==========================================
   NAVIGATION
   ========================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

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

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

/* ==========================================
   HERO SECTION
   ========================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 212, 255, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(0, 255, 136, 0.08), transparent);
    pointer-events: none;
}

.hero-content {
    position: relative;
    text-align: center;
    padding: 60px 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 100px;
    font-size: 0.875rem;
    color: var(--accent-cyan);
    margin-bottom: 24px;
}

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

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

.hero-title {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.title-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-weight: 500;
}

.hero-description {
    max-width: 600px;
    margin: 0 auto 40px;
    color: var(--text-muted);
    font-size: 1.125rem;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ==========================================
   BUTTONS
   ========================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

.btn-icon {
    font-size: 1.2rem;
}

.btn-loader {
    width: 18px;
    height: 18px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.btn-loader.hidden,
.hidden {
    display: none !important;
}

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

/* ==========================================
   TOOLS SECTION
   ========================================== */

.tools-section {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 1.125rem;
    margin-bottom: 60px;
}

.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 32px;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.tool-card:hover {
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: var(--shadow-glow);
}

.tool-header {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 28px 32px;
    background: var(--gradient-card);
    border-bottom: 1px solid var(--border-color);
}

.tool-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-md);
    font-size: 1.75rem;
}

.tool-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.tool-info p {
    color: var(--text-muted);
}

.tool-body {
    padding: 32px;
}

/* ==========================================
   INPUT FIELDS
   ========================================== */

.input-group {
    display: flex;
    gap: 12px;
}

.input-field {
    flex: 1;
    padding: 16px 20px;
    font-size: 1rem;
    font-family: inherit;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-field::placeholder {
    color: var(--text-muted);
}

.input-field:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

/* ==========================================
   RESULTS
   ========================================== */

.error-message {
    margin-top: 16px;
    padding: 14px 18px;
    background: rgba(255, 71, 87, 0.1);
    border: 1px solid rgba(255, 71, 87, 0.3);
    border-radius: var(--radius-sm);
    color: var(--accent-red);
    font-size: 0.95rem;
}

.results-container {
    margin-top: 32px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.results-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.results-count {
    font-size: 0.875rem;
    color: var(--text-muted);
    background: var(--bg-elevated);
    padding: 4px 12px;
    border-radius: 100px;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.result-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.result-card:hover {
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateX(4px);
}

.result-info {
    display: flex;
    align-items: center;
    gap: 14px;
}

.result-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-sm);
    font-size: 1.25rem;
}

.result-name {
    font-weight: 600;
}

.result-status {
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 100px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.result-status.found {
    background: rgba(0, 255, 136, 0.15);
    color: var(--accent-green);
}

.result-status.not-found {
    background: rgba(161, 161, 170, 0.15);
    color: var(--text-muted);
}

.result-link {
    color: var(--accent-cyan);
    text-decoration: none;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color var(--transition-fast);
}

.result-link:hover {
    color: var(--accent-green);
}

/* Social Links Grid */
.social-links-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.social-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.social-link-btn:hover {
    border-color: var(--accent-cyan);
    background: rgba(0, 212, 255, 0.05);
    transform: translateY(-2px);
}

.social-link-btn span {
    font-size: 1.25rem;
}

/* ==========================================
   ABOUT SECTION
   ========================================== */

.about-section {
    padding: 100px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-content .section-title {
    text-align: left;
    margin-bottom: 24px;
}

.about-text {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.about-features {
    display: flex;
    gap: 24px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.feature {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-weight: 500;
}

.feature-icon {
    font-size: 1.25rem;
}

/* Terminal Visual */
.terminal {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 18px;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border-color);
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-dot.red { background: #ff5f57; }
.terminal-dot.yellow { background: #febc2e; }
.terminal-dot.green { background: #28c840; }

.terminal-title {
    margin-left: 12px;
    font-size: 0.875rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.terminal-body {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.8;
}

.terminal-line {
    color: var(--text-secondary);
}

.terminal-line.output {
    padding-left: 20px;
}

.prompt {
    color: var(--accent-green);
    margin-right: 10px;
}

.cyan { color: var(--accent-cyan); }
.green { color: var(--accent-green); }

.cursor {
    animation: blink 1s infinite;
}

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

/* ==========================================
   DISCLAIMER SECTION
   ========================================== */

.disclaimer-section {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.disclaimer-card {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: 48px;
    background: rgba(255, 107, 53, 0.05);
    border: 1px solid rgba(255, 107, 53, 0.2);
    border-radius: var(--radius-lg);
}

.disclaimer-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.disclaimer-card h2 {
    font-size: 1.75rem;
    margin-bottom: 20px;
    color: var(--accent-orange);
}

.disclaimer-card p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
}

/* ==========================================
   FOOTER
   ========================================== */

.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1.125rem;
}

.footer-text {
    color: var(--text-muted);
}

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

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* ==========================================
   RESPONSIVE
   ========================================== */

@media (max-width: 900px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .about-visual {
        order: -1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        gap: 32px;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .tool-header {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .results-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        align-items: stretch;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .disclaimer-card {
        padding: 32px 24px;
    }
}