/* =========================================
   CyberSec Lab - IIB Darmajaya
   Workshop Cyber Security untuk SMA
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700&family=Fira+Code:wght@400;500;600&display=swap');

:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.8);
    --bg-card-hover: rgba(17, 24, 39, 0.95);
    --accent-green: #00ff41;
    --accent-cyan: #00d4ff;
    --accent-magenta: #ff006e;
    --accent-yellow: #ffd600;
    --accent-orange: #ff6b35;
    --accent-purple: #a855f7;
    --text-primary: #e0e0e0;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --border-color: rgba(0, 212, 255, 0.15);
    --glow-green: 0 0 20px rgba(0, 255, 65, 0.3);
    --glow-cyan: 0 0 20px rgba(0, 212, 255, 0.3);
    --glow-magenta: 0 0 20px rgba(255, 0, 110, 0.3);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--accent-cyan);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-green);
}

/* ============ MATRIX CANVAS ============ */
#matrix-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.08;
    pointer-events: none;
}

/* ============ NAVIGATION ============ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 23, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2rem;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.navbar-brand .logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-green));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 900;
    color: var(--bg-primary);
    font-family: 'Orbitron', sans-serif;
}

.navbar-brand .brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.navbar-brand .brand-name {
    font-family: 'Orbitron', sans-serif;
    font-size: 14px;
    font-weight: 700;
    color: var(--accent-cyan);
    letter-spacing: 1px;
}

.navbar-brand .brand-sub {
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.navbar-nav {
    display: flex;
    list-style: none;
    gap: 5px;
    align-items: center;
}

.navbar-nav a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.navbar-nav a:hover,
.navbar-nav a.active {
    color: var(--accent-cyan);
    background: rgba(0, 212, 255, 0.1);
}

.navbar-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--accent-cyan);
    font-size: 24px;
    cursor: pointer;
    padding: 5px 10px;
    border-radius: var(--radius-sm);
}

/* ============ NAV DROPDOWN ============ */
.nav-dropdown {
    position: relative;
}

.nav-dropdown > a {
    cursor: pointer;
}

.nav-dropdown .dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(10, 14, 23, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 6px;
    min-width: 200px;
    list-style: none;
    z-index: 1001;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.nav-dropdown:hover .dropdown-menu {
    display: block;
}

.nav-dropdown .dropdown-menu a {
    font-size: 12.5px;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    display: flex;
    width: 100%;
}

.nav-dropdown .dropdown-menu a:hover {
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent-cyan);
}

/* ============ MAIN CONTENT ============ */
.main-content {
    margin-top: 70px;
    position: relative;
    z-index: 1;
    min-height: calc(100vh - 70px);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ============ HERO SECTION ============ */
.hero {
    min-height: calc(100vh - 70px);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4rem 2rem;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 50px;
    font-size: 13px;
    color: var(--accent-cyan);
    margin-bottom: 2rem;
    font-weight: 500;
    animation: fadeInDown 0.8s ease-out;
}

.hero h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-green), var(--accent-cyan));
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease infinite;
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 2.5rem;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.6s both;
}

/* ============ BUTTONS ============ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: 'Inter', sans-serif;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan), #0099cc);
    color: var(--bg-primary);
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--accent-cyan);
    border: 1px solid var(--accent-cyan);
}

.btn-outline:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: var(--glow-cyan);
}

.btn-green {
    background: linear-gradient(135deg, var(--accent-green), #00cc33);
    color: var(--bg-primary);
    box-shadow: 0 4px 15px rgba(0, 255, 65, 0.3);
}

.btn-green:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 255, 65, 0.5);
}

.btn-danger {
    background: linear-gradient(135deg, var(--accent-magenta), #cc0055);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 0, 110, 0.3);
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 0, 110, 0.5);
}

.btn-sm {
    padding: 8px 18px;
    font-size: 13px;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 16px;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* ============ SECTIONS ============ */
.section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header .section-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: rgba(0, 255, 65, 0.1);
    border: 1px solid rgba(0, 255, 65, 0.2);
    border-radius: 50px;
    font-size: 12px;
    color: var(--accent-green);
    margin-bottom: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-header h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============ CARDS ============ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

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

.card-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 1.2rem;
}

.card-icon.cyan { background: rgba(0, 212, 255, 0.15); color: var(--accent-cyan); }
.card-icon.green { background: rgba(0, 255, 65, 0.15); color: var(--accent-green); }
.card-icon.magenta { background: rgba(255, 0, 110, 0.15); color: var(--accent-magenta); }
.card-icon.yellow { background: rgba(255, 214, 0, 0.15); color: var(--accent-yellow); }
.card-icon.orange { background: rgba(255, 107, 53, 0.15); color: var(--accent-orange); }
.card-icon.purple { background: rgba(168, 85, 247, 0.15); color: var(--accent-purple); }

.card h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.1rem;
    margin-bottom: 0.7rem;
    font-weight: 600;
}

.card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.2rem;
}

.card-tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-tag.beginner { background: rgba(0, 255, 65, 0.15); color: var(--accent-green); }
.card-tag.intermediate { background: rgba(255, 214, 0, 0.15); color: var(--accent-yellow); }
.card-tag.advanced { background: rgba(255, 0, 110, 0.15); color: var(--accent-magenta); }

/* ============ GRID LAYOUTS ============ */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

/* ============ LAB MODULE STYLES ============ */
.lab-header {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.05), rgba(0, 255, 65, 0.05));
    border-bottom: 1px solid var(--border-color);
    padding: 2rem 0;
}

.lab-header h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.lab-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.lab-content {
    padding: 2rem 0 4rem;
}

.lab-section {
    margin-bottom: 2.5rem;
}

.lab-section h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--accent-cyan);
    display: flex;
    align-items: center;
    gap: 10px;
}

.lab-section h3 {
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
    color: var(--accent-green);
}

/* ============ FORMS ============ */
.form-group {
    margin-bottom: 1.2rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

/* ============ CODE BLOCKS ============ */
.code-block {
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(0, 255, 65, 0.15);
    border-radius: var(--radius-sm);
    padding: 1.2rem;
    font-family: 'Fira Code', monospace;
    font-size: 13px;
    line-height: 1.8;
    overflow-x: auto;
    margin: 1rem 0;
    position: relative;
}

.code-block .code-label {
    position: absolute;
    top: 8px;
    right: 12px;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    font-family: 'Inter', sans-serif;
}

.code-block .line-number {
    color: var(--text-muted);
    user-select: none;
    margin-right: 1rem;
}

.code-block .keyword { color: var(--accent-magenta); }
.code-block .string { color: var(--accent-green); }
.code-block .function { color: var(--accent-cyan); }
.code-block .comment { color: var(--text-muted); font-style: italic; }
.code-block .variable { color: var(--accent-yellow); }
.code-block .danger { color: var(--accent-magenta); background: rgba(255,0,110,0.1); padding: 0 4px; border-radius: 3px; }
.code-block .safe { color: var(--accent-green); background: rgba(0,255,65,0.1); padding: 0 4px; border-radius: 3px; }

/* ============ ALERTS ============ */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.9rem;
}

.alert-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.alert-danger {
    background: rgba(255, 0, 110, 0.1);
    border: 1px solid rgba(255, 0, 110, 0.3);
    color: #ff4488;
}

.alert-warning {
    background: rgba(255, 214, 0, 0.1);
    border: 1px solid rgba(255, 214, 0, 0.3);
    color: var(--accent-yellow);
}

.alert-success {
    background: rgba(0, 255, 65, 0.1);
    border: 1px solid rgba(0, 255, 65, 0.3);
    color: var(--accent-green);
}

.alert-info {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    color: var(--accent-cyan);
}

/* ============ TABLES ============ */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    margin: 1rem 0;
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th {
    background: rgba(0, 212, 255, 0.1);
    padding: 12px 16px;
    text-align: left;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}

table td {
    padding: 10px 16px;
    font-size: 14px;
    border-bottom: 1px solid rgba(255,255,255,0.03);
}

table tr:hover td {
    background: rgba(0, 212, 255, 0.03);
}

/* ============ TABS ============ */
.tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0;
}

.tab-btn {
    padding: 10px 20px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    font-family: 'Inter', sans-serif;
}

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

.tab-btn.active {
    color: var(--accent-cyan);
    border-bottom-color: var(--accent-cyan);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* ============ PASSWORD METER ============ */
.password-meter {
    height: 6px;
    border-radius: 3px;
    background: rgba(255,255,255,0.1);
    margin-top: 8px;
    overflow: hidden;
}

.password-meter-fill {
    height: 100%;
    border-radius: 3px;
    transition: all 0.4s ease;
    width: 0;
}

.strength-weak { width: 25%; background: var(--accent-magenta); }
.strength-fair { width: 50%; background: var(--accent-orange); }
.strength-good { width: 75%; background: var(--accent-yellow); }
.strength-strong { width: 100%; background: var(--accent-green); }

/* ============ COMPARISON LAYOUT ============ */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.comparison-card {
    border-radius: var(--radius);
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.comparison-card.vulnerable {
    background: rgba(255, 0, 110, 0.03);
    border-color: rgba(255, 0, 110, 0.2);
}

.comparison-card.vulnerable h3 {
    color: var(--accent-magenta);
}

.comparison-card.secure {
    background: rgba(0, 255, 65, 0.03);
    border-color: rgba(0, 255, 65, 0.2);
}

.comparison-card.secure h3 {
    color: var(--accent-green);
}

/* ============ QUIZ STYLES ============ */
.quiz-option {
    display: block;
    width: 100%;
    padding: 1rem 1.2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    margin-bottom: 8px;
    font-family: 'Inter', sans-serif;
}

.quiz-option:hover {
    border-color: var(--accent-cyan);
    background: rgba(0, 212, 255, 0.05);
}

.quiz-option.correct {
    border-color: var(--accent-green);
    background: rgba(0, 255, 65, 0.1);
    color: var(--accent-green);
}

.quiz-option.wrong {
    border-color: var(--accent-magenta);
    background: rgba(255, 0, 110, 0.1);
    color: var(--accent-magenta);
}

.quiz-score {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    font-weight: 900;
    text-align: center;
}

/* ============ CTF STYLES ============ */
.flag-input {
    display: flex;
    gap: 10px;
}

.flag-input input {
    flex: 1;
}

.challenge-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.challenge-card.solved {
    border-color: rgba(0, 255, 65, 0.3);
    background: rgba(0, 255, 65, 0.03);
}

.challenge-card .points {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.85rem;
    color: var(--accent-yellow);
    font-weight: 700;
}

/* ============ RESULT BOX ============ */
.result-box {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1rem 1.2rem;
    margin-top: 1rem;
    font-family: 'Fira Code', monospace;
    font-size: 13px;
    white-space: pre-wrap;
    word-break: break-all;
    min-height: 50px;
}

/* ============ PRESENTATION SLIDES ============ */
.slide {
    min-height: 80vh;
    display: flex;
    align-items: center;
    padding: 4rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.03);
}

.slide-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.75rem;
    color: var(--accent-cyan);
    opacity: 0.5;
    margin-bottom: 1rem;
    letter-spacing: 2px;
}

.slide h2 {
    font-family: 'Orbitron', sans-serif;
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    margin-bottom: 1.5rem;
    font-weight: 700;
}

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

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

.slide .highlight-magenta {
    color: var(--accent-magenta);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem;
    text-align: center;
}

.stat-card .stat-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
}

.stat-card .stat-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* ============ TYPING EFFECT ============ */
.typing-text {
    font-family: 'Fira Code', monospace;
    color: var(--accent-green);
    font-size: 1.1rem;
}

.typing-cursor {
    display: inline-block;
    width: 2px;
    height: 1.2em;
    background: var(--accent-green);
    margin-left: 2px;
    animation: blink 0.8s infinite;
    vertical-align: text-bottom;
}

/* ============ FOOTER ============ */
.footer {
    background: rgba(0, 0, 0, 0.3);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    text-align: center;
}

.footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer a {
    color: var(--accent-cyan);
    text-decoration: none;
}

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

/* ============ ANIMATIONS ============ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

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

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============ BADGE/TAG ============ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 600;
}

.badge-green { background: rgba(0,255,65,0.15); color: var(--accent-green); }
.badge-cyan { background: rgba(0,212,255,0.15); color: var(--accent-cyan); }
.badge-magenta { background: rgba(255,0,110,0.15); color: var(--accent-magenta); }
.badge-yellow { background: rgba(255,214,0,0.15); color: var(--accent-yellow); }

/* ============ TOOLTIP ============ */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.tooltip:hover::after {
    opacity: 1;
}

/* ============ UTILITY ============ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-green { color: var(--accent-green); }
.text-cyan { color: var(--accent-cyan); }
.text-magenta { color: var(--accent-magenta); }
.text-yellow { color: var(--accent-yellow); }
.text-muted { color: var(--text-muted); }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.gap-1 { gap: 0.5rem; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .comparison-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .navbar-nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(10, 14, 23, 0.98);
        flex-direction: column;
        padding: 1rem;
        border-bottom: 1px solid var(--border-color);
    }

    .navbar-nav.show {
        display: flex;
    }

    .navbar-toggle {
        display: block;
    }

    .nav-dropdown .dropdown-menu {
        position: static;
        background: rgba(255, 255, 255, 0.03);
        border: none;
        box-shadow: none;
        padding: 0 0 0 1rem;
        min-width: auto;
    }

    .nav-dropdown .dropdown-menu {
        display: block;
    }

    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .container {
        padding: 0 1rem;
    }

    .card {
        padding: 1.5rem;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }

    .tabs {
        flex-wrap: wrap;
    }

    .flag-input {
        flex-direction: column;
    }
}

/* ============ GUESTBOOK ============ */
.guestbook-entry {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1rem 1.2rem;
    margin-bottom: 0.8rem;
}

.guestbook-entry .entry-name {
    font-weight: 600;
    color: var(--accent-cyan);
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.guestbook-entry .entry-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.guestbook-entry .entry-message {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ============ SEARCH HIGHLIGHT ============ */
.search-result {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1rem;
    margin-bottom: 0.5rem;
}

/* ============ LOADING ============ */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-cyan);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ============ SQL QUERY DISPLAY ============ */
.sql-query-display {
    background: rgba(0, 0, 0, 0.6);
    border-left: 3px solid var(--accent-yellow);
    padding: 1rem 1.2rem;
    margin: 1rem 0;
    font-family: 'Fira Code', monospace;
    font-size: 13px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    overflow-x: auto;
}

.sql-query-display .sql-keyword {
    color: var(--accent-cyan);
    font-weight: 600;
}

.sql-query-display .sql-string {
    color: var(--accent-green);
}

.sql-query-display .sql-danger {
    color: var(--accent-magenta);
    font-weight: 700;
}