/* ===== LIGHT MODE ENHANCEMENTS - CYBER STYLE ===== */

/* Light Mode - Vibrant Gradient Background */
[data-theme="light"] body,
body:not([data-theme="dark"]) {
    background: linear-gradient(-45deg, #667eea, #764ba2, #f093fb, #4facfe) !important;
    background-size: 400% 400% !important;
    animation: gradientShift 15s ease infinite !important;
    min-height: 100vh;
}

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

/* Light Mode - Cyber Grid Overlay */
[data-theme="light"] .cyber-grid,
body:not([data-theme="dark"]) .cyber-grid {
    display: block !important;
    opacity: 0.3 !important;
    background-image: 
        linear-gradient(rgba(255,255,255,0.15) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.15) 1px, transparent 1px) !important;
}

/* Navbar - Light Mode */
[data-theme="light"] .navbar-custom,
body:not([data-theme="dark"]) .navbar-custom {
    background: rgba(255,255,255,0.98) !important;
    backdrop-filter: blur(20px) saturate(180%) !important;
    border-bottom: 3px solid rgba(102,102,241,0.5) !important;
    box-shadow: 0 4px 30px rgba(102,102,241,0.4), 0 0 60px rgba(102,102,241,0.2) !important;
}

[data-theme="light"] .navbar-custom::before,
body:not([data-theme="dark"]) .navbar-custom::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, 
        transparent,
        #667eea 20%,
        #8b5cf6 50%,
        #ec4899 80%,
        transparent
    ) !important;
    animation: navGlow 3s ease-in-out infinite;
}

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

body:not([data-theme="dark"]) .navbar-custom .navbar-brand {
    font-family: 'Orbitron', monospace;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 900;
    text-shadow: none;
    letter-spacing: 2px;
    position: relative;
}

body:not([data-theme="dark"]) .navbar-custom .navbar-brand::before {
    content: '> ';
    color: var(--primary);
    -webkit-text-fill-color: var(--primary);
    animation: blink 1s step-end infinite;
}

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

body:not([data-theme="dark"]) .navbar-custom .nav-link {
    color: #4b5563;
    font-weight: 600;
}

body:not([data-theme="dark"]) .navbar-custom .nav-link:hover,
body:not([data-theme="dark"]) .navbar-custom .nav-link.active {
    color: var(--primary);
    background: rgba(99,102,241,0.1);
}

/* Hero Section - Cyber Style */
body:not([data-theme="dark"]) .hero-title {
    font-family: 'Orbitron', monospace;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 4px 20px rgba(99,102,241,0.5);
    letter-spacing: 3px;
    position: relative;
}

body:not([data-theme="dark"]) .hero-title::after {
    content: '_';
    animation: blink 1s step-end infinite;
    color: var(--primary);
    -webkit-text-fill-color: var(--primary);
}

body:not([data-theme="dark"]) .hero-subtitle {
    color: rgba(255,255,255,0.95);
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
    font-family: 'Rajdhani', sans-serif;
    font-weight: 600;
}

/* Feature Cards - Light Mode Glassmorphism */
[data-theme="light"] .feature-card,
body:not([data-theme="dark"]) .feature-card {
    background: rgba(255,255,255,0.95) !important;
    backdrop-filter: blur(20px) saturate(180%) !important;
    border: 2px solid rgba(102,102,241,0.4) !important;
    box-shadow: 0 8px 32px rgba(102,102,241,0.3), 0 0 40px rgba(102,102,241,0.1) !important;
}

[data-theme="light"] .feature-card:hover,
body:not([data-theme="dark"]) .feature-card:hover {
    transform: translateY(-8px) scale(1.02) !important;
    box-shadow: 0 12px 50px rgba(102,102,241,0.5), 0 0 80px rgba(102,102,241,0.3) !important;
    border-color: #667eea !important;
}

body:not([data-theme="dark"]) .feature-icon {
    box-shadow: 0 4px 15px rgba(0,0,0,0.2), 0 0 30px rgba(102,102,241,0.3);
    border: 2px solid rgba(255,255,255,0.5);
}

body:not([data-theme="dark"]) .feature-card:hover .feature-icon {
    box-shadow: 0 6px 20px rgba(0,0,0,0.3), 0 0 40px rgba(102,102,241,0.5);
    transform: scale(1.1) rotate(-5deg);
}

/* Calculator Cards - Light Mode */
[data-theme="light"] .calc-card,
body:not([data-theme="dark"]) .calc-card {
    background: rgba(255,255,255,0.98) !important;
    backdrop-filter: blur(20px) saturate(180%) !important;
    border: 2px solid rgba(102,102,241,0.4) !important;
    box-shadow: 0 8px 40px rgba(102,102,241,0.3), inset 0 0 40px rgba(102,102,241,0.08) !important;
}

[data-theme="light"] .calc-card::before,
body:not([data-theme="dark"]) .calc-card::before {
    background: linear-gradient(90deg, #667eea, #8b5cf6, #ec4899) !important;
    opacity: 1 !important;
    box-shadow: 0 0 30px rgba(102,102,241,0.6) !important;
}

body:not([data-theme="dark"]) .calc-card-title {
    font-family: 'Orbitron', monospace;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 0 0 20px rgba(102,102,241,0.3);
}

body:not([data-theme="dark"]) .form-label-custom {
    font-family: 'Rajdhani', sans-serif;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 700;
}

body:not([data-theme="dark"]) .form-control-custom,
body:not([data-theme="dark"]) .form-select-custom {
    background: rgba(255,255,255,0.9);
    border: 2px solid rgba(99,102,241,0.3);
    color: var(--text-primary);
    font-family: 'Share Tech Mono', monospace;
}

body:not([data-theme="dark"]) .form-control-custom:focus,
body:not([data-theme="dark"]) .form-select-custom:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(99,102,241,0.15), 0 0 20px rgba(99,102,241,0.3);
    background: #ffffff;
}

/* Operation Buttons - Cyber Keys */
body:not([data-theme="dark"]) .op-btn {
    background: rgba(255,255,255,0.9);
    border: 2px solid rgba(99,102,241,0.3);
    color: var(--primary);
    font-family: 'Orbitron', monospace;
    font-weight: 700;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
}

body:not([data-theme="dark"]) .op-btn::before {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 0; height: 0;
    background: rgba(99,102,241,0.2);
    border-radius: 50%;
    transition: width 0.3s ease, height 0.3s ease;
}

body:not([data-theme="dark"]) .op-btn:hover::before {
    width: 200%; height: 200%;
}

body:not([data-theme="dark"]) .op-btn:hover {
    background: rgba(99,102,241,0.15);
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(99,102,241,0.4);
}

body:not([data-theme="dark"]) .op-btn.active {
    background: var(--gradient-primary);
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 0 30px rgba(99,102,241,0.6);
}

/* Calculate Button - Execute Command */
body:not([data-theme="dark"]) .btn-calculate {
    background: var(--gradient-primary);
    box-shadow: 0 4px 20px rgba(99,102,241,0.4), 0 0 40px rgba(99,102,241,0.2);
    font-family: 'Orbitron', monospace;
    position: relative;
    overflow: hidden;
}

body:not([data-theme="dark"]) .btn-calculate::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.5s ease;
}

body:not([data-theme="dark"]) .btn-calculate:hover::before {
    left: 100%;
}

body:not([data-theme="dark"]) .btn-calculate:hover {
    box-shadow: 0 6px 30px rgba(99,102,241,0.6), 0 0 60px rgba(99,102,241,0.3);
    transform: translateY(-3px);
}

/* Result Section - Light Mode */
[data-theme="light"] .result-section,
body:not([data-theme="dark"]) .result-section {
    background: rgba(255,255,255,0.98) !important;
    border: 3px solid rgba(102,102,241,0.5) !important;
    box-shadow: 0 4px 30px rgba(102,102,241,0.4), inset 0 0 40px rgba(102,102,241,0.1) !important;
}

body:not([data-theme="dark"]) .result-section::before {
    content: '> OUTPUT:';
    position: absolute;
    top: -12px; left: 20px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    padding: 0 10px;
    font-family: 'Orbitron', monospace;
    font-size: 0.75rem;
    color: #ffffff;
    letter-spacing: 2px;
    border-radius: 4px;
    box-shadow: 0 2px 10px rgba(102,102,241,0.3);
}

body:not([data-theme="dark"]) .result-value {
    font-family: 'Orbitron', monospace;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: flicker 0.5s ease-in;
}

@keyframes flicker {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

body:not([data-theme="dark"]) .result-formula {
    color: var(--text-secondary);
    font-family: 'Share Tech Mono', monospace;
}

body:not([data-theme="dark"]) .result-formula code {
    background: rgba(99,102,241,0.15);
    border: 1px solid rgba(99,102,241,0.3);
    color: var(--primary);
    font-family: 'Share Tech Mono', monospace;
}

/* Steps - Execution Log */
body:not([data-theme="dark"]) .steps-title {
    font-family: 'Orbitron', monospace;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

body:not([data-theme="dark"]) .step-number {
    background: var(--gradient-primary);
    box-shadow: 0 2px 10px rgba(99,102,241,0.3), 0 0 20px rgba(99,102,241,0.2);
    font-family: 'Orbitron', monospace;
}

body:not([data-theme="dark"]) .step-content {
    background: rgba(255,255,255,0.9);
    border: 1px solid rgba(99,102,241,0.2);
    font-family: 'Rajdhani', sans-serif;
}

/* Math Notation - Code Block */
body:not([data-theme="dark"]) .math-notation {
    background: rgba(255,255,255,0.9);
    border: 2px solid rgba(99,102,241,0.2);
    font-family: 'Share Tech Mono', monospace;
    box-shadow: inset 0 0 20px rgba(102,102,241,0.05);
}

body:not([data-theme="dark"]) .math-notation .highlight {
    color: var(--primary);
    font-weight: 700;
}

/* Tabs */
body:not([data-theme="dark"]) .tab-nav {
    background: rgba(255,255,255,0.9);
    border: 2px solid rgba(99,102,241,0.15);
}

body:not([data-theme="dark"]) .tab-btn.active {
    background: var(--gradient-primary);
    color: #ffffff;
}

/* History */
body:not([data-theme="dark"]) .history-item {
    background: rgba(255,255,255,0.95);
    border: 2px solid rgba(255,255,255,0.5);
    box-shadow: 0 4px 15px rgba(102,102,241,0.15);
}

body:not([data-theme="dark"]) .history-item:hover {
    box-shadow: 0 6px 25px rgba(102,102,241,0.25);
}

/* Theme Toggle */
body:not([data-theme="dark"]) .theme-toggle {
    background: rgba(255,255,255,0.9);
    border: 2px solid rgba(99,102,241,0.3);
    color: var(--primary);
}

body:not([data-theme="dark"]) .theme-toggle:hover {
    border-color: var(--primary);
    box-shadow: 0 0 20px rgba(99,102,241,0.4);
}

/* Stat Badges */
body:not([data-theme="dark"]) .stat-badge {
    background: rgba(255,255,255,0.9);
    border: 2px solid rgba(255,255,255,0.5);
    box-shadow: 0 2px 10px rgba(102,102,241,0.15);
}

/* Footer */
body:not([data-theme="dark"]) .footer {
    color: rgba(255,255,255,0.9);
    text-shadow: 0 1px 3px rgba(0,0,0,0.2);
    border-top: 1px solid rgba(255,255,255,0.3);
}

/* Scrollbar Light Mode */
body:not([data-theme="dark"])::-webkit-scrollbar {
    width: 10px;
    background: rgba(255,255,255,0.5);
}

body:not([data-theme="dark"])::-webkit-scrollbar-track {
    background: rgba(255,255,255,0.3);
}

body:not([data-theme="dark"])::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 5px;
}

body:not([data-theme="dark"])::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Error Message */
body:not([data-theme="dark"]) .error-message {
    background: rgba(239,68,68,0.1);
    border: 2px solid rgba(239,68,68,0.3);
}

/* Circuit Builder */
body:not([data-theme="dark"]) .circuit-row {
    background: rgba(255,255,255,0.9);
    border: 2px solid rgba(99,102,241,0.15);
}

body:not([data-theme="dark"]) .btn-add-gate {
    background: rgba(99,102,241,0.1);
    border: 2px dashed rgba(99,102,241,0.4);
    color: var(--primary);
}

body:not([data-theme="dark"]) .btn-add-gate:hover {
    background: rgba(99,102,241,0.2);
}

/* Preloader Light Mode - Cyber */
body:not([data-theme="dark"]) .preloader {
    background: linear-gradient(-45deg, #667eea, #764ba2, #f093fb, #4facfe);
    background-size: 400% 400%;
    animation: gradientShift 3s ease infinite;
}

body:not([data-theme="dark"]) .preloader-text {
    font-family: 'Orbitron', monospace;
    color: #ffffff;
    text-shadow: 0 0 20px rgba(255,255,255,0.8), 0 2px 10px rgba(0,0,0,0.3);
    letter-spacing: 3px;
}

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


/* Form Controls - Light Mode Override */
[data-theme="light"] .form-label-custom,
body:not([data-theme="dark"]) .form-label-custom {
    font-family: 'Rajdhani', sans-serif !important;
    color: #667eea !important;
    text-transform: uppercase !important;
    letter-spacing: 1.5px !important;
    font-weight: 700 !important;
}

[data-theme="light"] .form-control-custom,
[data-theme="light"] .form-select-custom,
body:not([data-theme="dark"]) .form-control-custom,
body:not([data-theme="dark"]) .form-select-custom {
    background: rgba(255,255,255,0.95) !important;
    border: 2px solid rgba(102,102,241,0.4) !important;
    color: #1a1a2e !important;
}

/* Dark Mode - Terminal Black Background */
[data-theme="dark"] body {
    background: #0a0e27 !important;
}

[data-theme="dark"] .calc-card {
    background: rgba(15, 20, 25, 0.95) !important;
    border: 2px solid rgba(0,255,135,0.3) !important;
}

[data-theme="dark"] .feature-card {
    background: rgba(15, 20, 25, 0.95) !important;
    border: 2px solid rgba(0,255,135,0.3) !important;
}

[data-theme="dark"] .form-control-custom,
[data-theme="dark"] .form-select-custom {
    background: rgba(0, 0, 0, 0.7) !important;
    border: 2px solid rgba(0,255,135,0.4) !important;
    color: #00ff87 !important;
}

[data-theme="dark"] .result-section {
    background: rgba(0, 0, 0, 0.8) !important;
    border: 2px solid #00ff87 !important;
}