@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;500;700&family=Outfit:wght@300;400;600;800&display=swap');

:root {
    --bg-dark: #0a0c10;
    --bg-card: rgba(22, 28, 38, 0.7);
    --bg-card-border: rgba(102, 252, 241, 0.15);
    --bg-card-hover: rgba(22, 28, 38, 0.95);
    
    --primary: #66fcf1;
    --primary-glow: rgba(102, 252, 241, 0.4);
    --secondary: #45a29e;
    --accent: #c77dff;
    --accent-glow: rgba(199, 125, 255, 0.4);
    --danger: #ff5e62;
    --success: #2ec4b6;
    
    --text-main: #e2e8f0;
    --text-muted: #8a99ad;
    --text-bright: #ffffff;
    
    --font-sans: 'Outfit', -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --glow-shadow: 0 0 15px var(--primary-glow);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(at 0% 0%, rgba(102, 252, 241, 0.05) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(199, 125, 255, 0.05) 0px, transparent 50%);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-dark);
}
::-webkit-scrollbar-thumb {
    background: #1f2833;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Header / Branding */
header {
    margin-bottom: 50px;
    position: relative;
}

.brand-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 20px;
}

.logo {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-bright);
    text-decoration: none;
    letter-spacing: -1px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo span {
    color: var(--primary);
    text-shadow: 0 0 10px var(--primary-glow);
}

.system-status {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 6px 12px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-dot {
    width: 8px;
    height: 8px;
    background-color: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--success);
    display: inline-block;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(46, 196, 182, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(46, 196, 182, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(46, 196, 182, 0); }
}

/* Nav Links */
nav {
    display: flex;
    gap: 15px;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    padding: 8px 16px;
    border-radius: 6px;
    border: 1px solid transparent;
    transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
    color: var(--primary);
    background: rgba(102, 252, 241, 0.05);
    border-color: rgba(102, 252, 241, 0.1);
}

/* Cards & Layout Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--bg-card-border);
    border-radius: 16px;
    padding: 30px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(102, 252, 241, 0.4);
    box-shadow: 0 10px 30px rgba(102, 252, 241, 0.05);
    background: var(--bg-card-hover);
}

.card:hover::before {
    opacity: 1;
}

.card-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.card-title i {
    color: var(--primary);
}

.card-text {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

/* Cyber Dashboard Widget */
.dashboard-hero {
    background: linear-gradient(135deg, rgba(22, 28, 38, 0.8), rgba(11, 12, 16, 0.9));
    border: 1px solid rgba(102, 252, 241, 0.2);
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 50px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-tag {
    font-family: var(--font-mono);
    color: var(--accent);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 15px;
    display: block;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-bright);
    line-height: 1.1;
    margin-bottom: 20px;
}

.hero-title span {
    background: linear-gradient(120deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 30px;
}

/* Dashboard Stats Console */
.console-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 30px;
}

.console-stat {
    font-family: var(--font-mono);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
    margin-top: 5px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    padding: 10px 24px;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: var(--transition);
}

.btn:hover {
    background: var(--primary);
    color: var(--bg-dark);
    box-shadow: var(--glow-shadow);
}

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

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

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

.btn-accent:hover {
    background: var(--accent);
    color: var(--bg-dark);
    box-shadow: 0 0 15px var(--accent-glow);
}

/* Chat & Real-Time Components (for QR Code tool) */
.chat-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

@media(min-width: 900px) {
    .chat-layout {
        grid-template-columns: 350px 1fr;
    }
}

.chat-panel {
    background: var(--bg-card);
    border: 1px solid var(--bg-card-border);
    border-radius: 16px;
    padding: 24px;
    display: flex;
    flex-direction: column;
}

.qr-display-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    padding: 20px;
    border: 1px dashed rgba(102, 252, 241, 0.2);
    margin-bottom: 20px;
}

.qr-canvas-wrapper {
    background: white;
    padding: 10px;
    border-radius: 8px;
    display: inline-block;
}

.chat-window {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    height: 400px;
    overflow-y: auto;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.chat-message {
    max-width: 80%;
    padding: 10px 16px;
    border-radius: 12px;
    font-size: 0.95rem;
    position: relative;
    line-height: 1.4;
}

.message-system {
    align-self: center;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    border-radius: 6px;
    padding: 4px 10px;
    border: 1px solid rgba(255, 255, 255, 0.02);
}

.message-local {
    align-self: flex-end;
    background: rgba(102, 252, 241, 0.1);
    color: var(--text-bright);
    border: 1px solid rgba(102, 252, 241, 0.2);
    border-bottom-right-radius: 2px;
}

.message-remote {
    align-self: flex-start;
    background: rgba(199, 125, 255, 0.1);
    color: var(--text-bright);
    border: 1px solid rgba(199, 125, 255, 0.2);
    border-bottom-left-radius: 2px;
}

.message-meta {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 4px;
    text-align: right;
    font-family: var(--font-mono);
}

.chat-input-wrapper {
    display: flex;
    gap: 10px;
}

.chat-input {
    flex: 1;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-bright);
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 0.95rem;
    outline: none;
    transition: var(--transition);
}

.chat-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(102, 252, 241, 0.1);
}

/* File share preview */
.file-preview {
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(255, 255, 255, 0.02);
    padding: 10px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: 10px;
}

.file-icon {
    font-size: 1.5rem;
    color: var(--primary);
}

/* Alert Notification Banner */
.conn-banner {
    padding: 12px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.conn-p2p {
    background: rgba(46, 196, 182, 0.1);
    border-color: rgba(46, 196, 182, 0.3);
    color: var(--success);
}

.conn-relay {
    background: rgba(199, 125, 255, 0.1);
    border-color: rgba(199, 125, 255, 0.3);
    color: var(--accent);
}

.conn-failed {
    background: rgba(255, 94, 98, 0.1);
    border-color: rgba(255, 94, 98, 0.3);
    color: var(--danger);
}

/* Network Tool playground elements */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    text-transform: uppercase;
}

.console-output {
    background: #05070a;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: #39ff14; /* Matrix Green */
    padding: 20px;
    height: 350px;
    overflow-y: auto;
    white-space: pre-wrap;
    box-shadow: inset 0 0 10px rgba(0,0,0,0.8);
}

/* Footer styling */
footer {
    margin-top: 80px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 30px;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}