/* ===== CYBERSECURITY THEME - LOGICLAB ===== */
@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Orbitron:wght@400;500;600;700;800;900&family=Rajdhani:wght@300;400;500;600;700&display=swap');

:root {
    /* Cyber Colors */
    --cyber-green: #00ff87;
    --cyber-green-dark: #00cc6a;
    --cyber-blue: #00d9ff;
    --cyber-purple: #b026ff;
    --cyber-red: #ff0055;
    --cyber-yellow: #ffea00;
    
    /* Matrix Theme */
    --matrix-bg: #0a0e27;
    --matrix-bg-light: #0f1419;
    --matrix-card: rgba(15, 20, 25, 0.95);
    --matrix-border: rgba(0, 255, 135, 0.3);
    --matrix-glow: rgba(0, 255, 135, 0.5);
    
    /* Terminal Colors */
    --terminal-bg: #000000;
    --terminal-text: #00ff87;
    --terminal-prompt: #00d9ff;
    --terminal-error: #ff0055;
    
    /* Gradients */
    --gradient-cyber: linear-gradient(135deg, #00ff87 0%, #00d9ff 50%, #b026ff 100%);
    --gradient-matrix: linear-gradient(180deg, rgba(0,255,135,0.1) 0%, transparent 100%);
    --gradient-scan: linear-gradient(180deg, transparent 0%, var(--cyber-green) 50%, transparent 100%);
    
    /* Shadows & Glows */
    --glow-green: 0 0 10px rgba(0,255,135,0.5), 0 0 20px rgba(0,255,135,0.3), 0 0 30px rgba(0,255,135,0.1);
    --glow-blue: 0 0 10px rgba(0,217,255,0.5), 0 0 20px rgba(0,217,255,0.3);
    --glow-purple: 0 0 10px rgba(176,38,255,0.5), 0 0 20px rgba(176,38,255,0.3);
    --glow-red: 0 0 10px rgba(255,0,85,0.5), 0 0 20px rgba(255,0,85,0.3);
    
    --shadow-cyber: 0 8px 32px rgba(0,0,0,0.8);
    --shadow-inset: inset 0 2px 10px rgba(0,0,0,0.5);
}

[data-theme="dark"] {
    --bg-body: var(--matrix-bg) !important;
    --bg-card: var(--matrix-card) !important;
    --bg-card-solid: #0f1419 !important;
    --bg-navbar: rgba(10, 14, 39, 0.98) !important;
    --bg-input: rgba(0, 0, 0, 0.6) !important;
    --bg-result: linear-gradient(135deg, rgba(0,255,135,0.05), rgba(0,217,255,0.05)) !important;
    
    --text-primary: var(--cyber-green) !important;
    --text-secondary: #8b9dc3 !important;
    --text-muted: #4a5568 !important;
    
    --border-color: var(--matrix-border) !important;
    --border-input: rgba(0,255,135,0.4) !important;
    
    --primary: var(--cyber-green) !important;
    --primary-dark: var(--cyber-green-dark) !important;
    --secondary: var(--cyber-blue) !important;
    --accent: var(--cyber-purple) !important;
    --danger: var(--cyber-red) !important;
    --warning: var(--cyber-yellow) !important;
}

/* Dark Mode Body Background */
[data-theme="dark"] body {
    background: var(--matrix-bg) !important;
}

/* ===== DARK MODE SCANLINES ===== */
[data-theme="dark"] body::before {
    content: '';
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(0,255,135,0.03) 2px,
            rgba(0,255,135,0.03) 4px
        );
    pointer-events: none;
    z-index: 0;
    animation: scanlines 8s linear infinite;
}

@keyframes scanlines {
    0% { transform: translateY(0); }
    100% { transform: translateY(20px); }
}

/* ===== CYBER GRID ===== */
.cyber-grid {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-image: 
        linear-gradient(rgba(0,255,135,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,255,135,0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
    opacity: 0;
    transition: opacity 0.3s ease;
}

[data-theme="dark"] .cyber-grid {
    opacity: 1;
}

/* ===== GLITCH EFFECT ===== */
@keyframes glitch {
    0% { transform: translate(0); }
    20% { transform: translate(-2px, 2px); }
    40% { transform: translate(-2px, -2px); }
    60% { transform: translate(2px, 2px); }
    80% { transform: translate(2px, -2px); }
    100% { transform: translate(0); }
}

.glitch {
    position: relative;
    animation: glitch 0.3s ease-in-out;
}

/* ===== SCAN ANIMATION ===== */
@keyframes scan {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100%); }
}

.scan-line {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100px;
    background: var(--gradient-scan);
    pointer-events: none;
    opacity: 0.3;
    animation: scan 3s ease-in-out infinite;
    z-index: 10;
}

/* ===== TERMINAL NAVBAR ===== */
[data-theme="dark"] .navbar-custom {
    background: var(--bg-navbar);
    border-bottom: 2px solid var(--cyber-green);
    box-shadow: 0 0 20px rgba(0,255,135,0.3), var(--shadow-cyber);
    backdrop-filter: blur(10px);
}

[data-theme="dark"] .navbar-custom .navbar-brand {
    font-family: 'Orbitron', monospace;
    font-weight: 900;
    font-size: 1.5rem;
    color: var(--cyber-green);
    text-shadow: var(--glow-green);
    letter-spacing: 2px;
}

[data-theme="dark"] .navbar-custom .navbar-brand::before {
    content: '> ';
    color: var(--cyber-blue);
    animation: blink 1s step-end infinite;
}

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

[data-theme="dark"] .navbar-custom .nav-link {
    font-family: 'Rajdhani', sans-serif;
    color: #8b9dc3;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    transition: all 0.3s ease;
}

[data-theme="dark"] .navbar-custom .nav-link::before {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 80%; height: 2px;
    background: var(--gradient-cyber);
    transition: transform 0.3s ease;
}

[data-theme="dark"] .navbar-custom .nav-link:hover,
[data-theme="dark"] .navbar-custom .nav-link.active {
    color: var(--cyber-green);
    text-shadow: var(--glow-green);
}

[data-theme="dark"] .navbar-custom .nav-link:hover::before,
[data-theme="dark"] .navbar-custom .nav-link.active::before {
    transform: translateX(-50%) scaleX(1);
}

/* ===== THEME TOGGLE - CYBER STYLE ===== */
[data-theme="dark"] .theme-toggle {
    background: var(--terminal-bg);
    border: 2px solid var(--cyber-green);
    color: var(--cyber-green);
    box-shadow: var(--glow-green);
    position: relative;
    overflow: hidden;
}

[data-theme="dark"] .theme-toggle::before {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 0; height: 0;
    background: rgba(0,255,135,0.3);
    border-radius: 50%;
    transition: width 0.3s ease, height 0.3s ease;
}

[data-theme="dark"] .theme-toggle:hover::before {
    width: 100%; height: 100%;
}

[data-theme="dark"] .theme-toggle:hover {
    transform: rotate(180deg) scale(1.1);
    box-shadow: 0 0 20px rgba(0,255,135,0.8);
}

/* ===== HERO SECTION - TERMINAL STYLE ===== */
[data-theme="dark"] .hero-title {
    font-family: 'Orbitron', monospace;
    color: var(--cyber-green);
    text-shadow: var(--glow-green);
    letter-spacing: 3px;
    position: relative;
}

[data-theme="dark"] .hero-title::after {
    content: '_';
    animation: blink 1s step-end infinite;
    color: var(--cyber-blue);
}

[data-theme="dark"] .hero-subtitle {
    font-family: 'Rajdhani', sans-serif;
    color: #8b9dc3;
    font-weight: 500;
}

/* ===== FEATURE CARDS - CYBER PANELS ===== */
[data-theme="dark"] .feature-card {
    background: var(--matrix-card);
    border: 2px solid var(--matrix-border);
    box-shadow: var(--shadow-cyber), inset 0 0 20px rgba(0,255,135,0.05);
    position: relative;
    overflow: hidden;
}

[data-theme="dark"] .feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: var(--gradient-matrix);
    transition: left 0.5s ease;
}

[data-theme="dark"] .feature-card:hover::before {
    left: 0;
}

[data-theme="dark"] .feature-card:hover {
    border-color: var(--cyber-green);
    box-shadow: var(--glow-green), var(--shadow-cyber);
    transform: translateY(-8px) scale(1.02);
}

[data-theme="dark"] .feature-card::after {
    content: '';
    position: absolute;
    top: -2px; left: -2px; right: -2px; bottom: -2px;
    background: var(--gradient-cyber);
    border-radius: inherit;
    opacity: 0;
    z-index: -1;
    transition: opacity 0.3s ease;
}

[data-theme="dark"] .feature-card:hover::after {
    opacity: 0.2;
}

[data-theme="dark"] .feature-icon {
    background: var(--terminal-bg);
    border: 2px solid var(--cyber-green);
    box-shadow: var(--glow-green);
}

[data-theme="dark"] .feature-card h5 {
    font-family: 'Orbitron', monospace;
    color: var(--cyber-green);
    text-transform: uppercase;
    letter-spacing: 1px;
}

[data-theme="dark"] .feature-card p {
    font-family: 'Rajdhani', sans-serif;
    color: #8b9dc3;
}

/* ===== CALCULATOR CARD - TERMINAL PANEL ===== */
[data-theme="dark"] .calc-card {
    background: var(--matrix-card);
    border: 2px solid var(--matrix-border);
    box-shadow: var(--shadow-cyber), inset 0 0 30px rgba(0,255,135,0.05);
    position: relative;
}

[data-theme="dark"] .calc-card::before {
    height: 4px;
    background: var(--gradient-cyber);
    box-shadow: var(--glow-green);
}

[data-theme="dark"] .calc-card-title {
    font-family: 'Orbitron', monospace;
    color: var(--cyber-green);
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: var(--glow-green);
}

/* ===== FORM CONTROLS - TERMINAL INPUT ===== */
[data-theme="dark"] .form-label-custom {
    font-family: 'Rajdhani', sans-serif;
    color: var(--cyber-blue);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 700;
}

[data-theme="dark"] .form-control-custom,
[data-theme="dark"] .form-select-custom {
    background: var(--terminal-bg);
    border: 2px solid var(--matrix-border);
    color: var(--cyber-green);
    font-family: 'Share Tech Mono', monospace;
    font-size: 1.1rem;
    box-shadow: var(--shadow-inset);
}

[data-theme="dark"] .form-control-custom:focus,
[data-theme="dark"] .form-select-custom:focus {
    border-color: var(--cyber-green);
    box-shadow: var(--glow-green), var(--shadow-inset);
    color: var(--cyber-green);
}

[data-theme="dark"] .form-control-custom::placeholder {
    color: #4a5568;
    font-style: italic;
}

/* ===== OPERATION BUTTONS - CYBER KEYS ===== */
[data-theme="dark"] .op-btn {
    background: var(--terminal-bg);
    border: 2px solid var(--matrix-border);
    color: var(--cyber-green);
    font-family: 'Orbitron', monospace;
    font-weight: 700;
    text-transform: uppercase;
    box-shadow: var(--shadow-inset);
    position: relative;
    overflow: hidden;
}

[data-theme="dark"] .op-btn::before {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 0; height: 0;
    background: rgba(0,255,135,0.2);
    border-radius: 50%;
    transition: width 0.3s ease, height 0.3s ease;
}

[data-theme="dark"] .op-btn:hover::before {
    width: 200%; height: 200%;
}

[data-theme="dark"] .op-btn:hover {
    border-color: var(--cyber-green);
    box-shadow: var(--glow-green);
    color: var(--cyber-green);
}

[data-theme="dark"] .op-btn.active {
    background: var(--cyber-green);
    color: var(--terminal-bg);
    border-color: var(--cyber-green);
    box-shadow: var(--glow-green);
}

/* ===== CALCULATE BUTTON - EXECUTE COMMAND ===== */
[data-theme="dark"] .btn-calculate {
    background: var(--terminal-bg);
    border: 3px solid var(--cyber-green);
    color: var(--cyber-green);
    font-family: 'Orbitron', monospace;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 3px;
    box-shadow: var(--glow-green);
    position: relative;
    overflow: hidden;
}

[data-theme="dark"] .btn-calculate::before {
    background: linear-gradient(90deg, transparent, rgba(0,255,135,0.5), transparent);
}

[data-theme="dark"] .btn-calculate::after {
    content: '> EXECUTE';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

[data-theme="dark"] .btn-calculate:hover {
    background: var(--cyber-green);
    color: var(--terminal-bg);
    box-shadow: 0 0 30px rgba(0,255,135,0.8), 0 0 60px rgba(0,255,135,0.4);
}

[data-theme="dark"] .btn-calculate:active {
    animation: glitch 0.3s ease;
}

/* ===== RESULT SECTION - OUTPUT TERMINAL ===== */
[data-theme="dark"] .result-section {
    background: var(--terminal-bg);
    border: 2px solid var(--cyber-green);
    box-shadow: var(--glow-green), var(--shadow-inset);
    position: relative;
}

[data-theme="dark"] .result-section::before {
    content: '> OUTPUT:';
    position: absolute;
    top: -12px; left: 20px;
    background: var(--matrix-bg);
    padding: 0 10px;
    font-family: 'Orbitron', monospace;
    font-size: 0.75rem;
    color: var(--cyber-blue);
    letter-spacing: 2px;
}

[data-theme="dark"] .result-value {
    font-family: 'Orbitron', monospace;
    color: var(--cyber-green);
    text-shadow: var(--glow-green);
    animation: flicker 0.5s ease-in;
}

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

[data-theme="dark"] .result-formula {
    color: var(--cyber-blue);
    font-family: 'Share Tech Mono', monospace;
    border-bottom-color: var(--matrix-border);
}

[data-theme="dark"] .result-formula code {
    background: rgba(0,255,135,0.1);
    border: 1px solid var(--matrix-border);
    color: var(--cyber-green);
    font-family: 'Share Tech Mono', monospace;
}

/* ===== MATH NOTATION - CODE BLOCK ===== */
[data-theme="dark"] .math-notation {
    background: var(--terminal-bg);
    border: 2px solid var(--matrix-border);
    color: var(--cyber-green);
    font-family: 'Share Tech Mono', monospace;
    box-shadow: var(--shadow-inset);
}

[data-theme="dark"] .math-notation .highlight {
    color: var(--cyber-blue);
    text-shadow: var(--glow-blue);
}

/* ===== STEPS TIMELINE - EXECUTION LOG ===== */
[data-theme="dark"] .steps-title {
    font-family: 'Orbitron', monospace;
    color: var(--cyber-blue);
    text-transform: uppercase;
    letter-spacing: 2px;
}

[data-theme="dark"] .step-item::after {
    background: var(--matrix-border);
    box-shadow: 0 0 5px rgba(0,255,135,0.3);
}

[data-theme="dark"] .step-number {
    background: var(--terminal-bg);
    border: 2px solid var(--cyber-green);
    color: var(--cyber-green);
    font-family: 'Orbitron', monospace;
    box-shadow: var(--glow-green);
}

[data-theme="dark"] .step-content {
    background: rgba(0,0,0,0.6);
    border: 1px solid var(--matrix-border);
    color: #8b9dc3;
    font-family: 'Rajdhani', sans-serif;
    box-shadow: var(--shadow-inset);
}

/* ===== CIRCUIT BUILDER - LOGIC DESIGNER ===== */
[data-theme="dark"] .circuit-row {
    background: var(--terminal-bg);
    border: 2px solid var(--matrix-border);
    box-shadow: var(--shadow-inset);
}

[data-theme="dark"] .circuit-row select,
[data-theme="dark"] .circuit-row input {
    background: rgba(0,0,0,0.8);
    border: 1px solid var(--matrix-border);
    color: var(--cyber-green);
    font-family: 'Share Tech Mono', monospace;
}

[data-theme="dark"] .circuit-remove {
    background: rgba(255,0,85,0.2);
    border: 2px solid var(--cyber-red);
    color: var(--cyber-red);
}

[data-theme="dark"] .circuit-remove:hover {
    background: var(--cyber-red);
    box-shadow: var(--glow-red);
}

[data-theme="dark"] .btn-add-gate {
    background: rgba(0,255,135,0.1);
    border: 2px dashed var(--cyber-green);
    color: var(--cyber-green);
    font-family: 'Orbitron', monospace;
    text-transform: uppercase;
    letter-spacing: 1px;
}

[data-theme="dark"] .btn-add-gate:hover {
    background: rgba(0,255,135,0.2);
    box-shadow: var(--glow-green);
}

/* ===== ERROR MESSAGE - ALERT ===== */
[data-theme="dark"] .error-message {
    background: rgba(255,0,85,0.1);
    border: 2px solid var(--cyber-red);
    color: var(--cyber-red);
    font-family: 'Rajdhani', sans-serif;
    font-weight: 700;
    box-shadow: var(--glow-red);
}

/* ===== TABS - MODE SELECTOR ===== */
[data-theme="dark"] .tab-nav {
    background: var(--terminal-bg);
    border: 2px solid var(--matrix-border);
}

[data-theme="dark"] .tab-btn {
    font-family: 'Orbitron', monospace;
    color: #8b9dc3;
    text-transform: uppercase;
    letter-spacing: 1px;
}

[data-theme="dark"] .tab-btn.active {
    background: var(--cyber-green);
    color: var(--terminal-bg);
    box-shadow: var(--glow-green);
}

/* ===== HISTORY - LOG ENTRIES ===== */
[data-theme="dark"] .history-item {
    background: var(--matrix-card);
    border: 2px solid var(--matrix-border);
    box-shadow: var(--shadow-cyber);
}

[data-theme="dark"] .history-item:hover {
    border-color: var(--cyber-green);
    box-shadow: var(--glow-green);
}

[data-theme="dark"] .history-category {
    font-family: 'Orbitron', monospace;
    border: 1px solid currentColor;
    box-shadow: 0 0 10px currentColor;
}

[data-theme="dark"] .history-formula {
    font-family: 'Share Tech Mono', monospace;
    color: var(--cyber-green);
}

[data-theme="dark"] .history-result {
    color: var(--cyber-blue);
    text-shadow: var(--glow-blue);
}

/* ===== LOADING SPINNER - PROCESSING ===== */
[data-theme="dark"] .spinner {
    border-color: rgba(0,255,135,0.2);
    border-top-color: var(--cyber-green);
    box-shadow: var(--glow-green);
}

/* ===== SCROLLBAR - CYBER STYLE ===== */
[data-theme="dark"]::-webkit-scrollbar {
    width: 10px;
    background: var(--terminal-bg);
}

[data-theme="dark"]::-webkit-scrollbar-track {
    background: var(--terminal-bg);
    border-left: 1px solid var(--matrix-border);
}

[data-theme="dark"]::-webkit-scrollbar-thumb {
    background: var(--cyber-green);
    border-radius: 0;
    box-shadow: var(--glow-green);
}

[data-theme="dark"]::-webkit-scrollbar-thumb:hover {
    background: var(--cyber-blue);
    box-shadow: var(--glow-blue);
}

/* ===== TYPING EFFECT ===== */
@keyframes typing {
    from { width: 0; }
    to { width: 100%; }
}

.typing-effect {
    overflow: hidden;
    white-space: nowrap;
    animation: typing 2s steps(40, end);
}

/* ===== PULSE EFFECT ===== */
@keyframes pulse-glow {
    0%, 100% {
        box-shadow: var(--glow-green);
    }
    50% {
        box-shadow: 0 0 20px rgba(0,255,135,0.8), 0 0 40px rgba(0,255,135,0.5);
    }
}

.pulse-glow {
    animation: pulse-glow 2s ease-in-out infinite;
}

/* ===== HOLOGRAM EFFECT ===== */
.hologram {
    position: relative;
}

.hologram::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(
        180deg,
        transparent 0%,
        rgba(0,255,135,0.1) 50%,
        transparent 100%
    );
    animation: hologram-scan 3s linear infinite;
    pointer-events: none;
}

@keyframes hologram-scan {
    0% { transform: translateY(-100%); }
    100% { transform: translateY(100%); }
}


/* ===== DARK MODE COMPLETE OVERRIDE ===== */

/* Dark Mode Body */
[data-theme="dark"] body {
    background: #0a0e27 !important;
    color: #00ff87 !important;
}

/* Dark Mode Navbar */
[data-theme="dark"] .navbar-custom {
    background: rgba(10, 14, 39, 0.98) !important;
    border-bottom: 2px solid #00ff87 !important;
    box-shadow: 0 0 20px rgba(0,255,135,0.3) !important;
}

[data-theme="dark"] .navbar-custom .navbar-brand {
    color: #00ff87 !important;
    text-shadow: 0 0 10px rgba(0,255,135,0.5) !important;
    -webkit-text-fill-color: #00ff87 !important;
}

[data-theme="dark"] .navbar-custom .nav-link {
    color: #8b9dc3 !important;
}

[data-theme="dark"] .navbar-custom .nav-link:hover,
[data-theme="dark"] .navbar-custom .nav-link.active {
    color: #00ff87 !important;
    background: rgba(0,255,135,0.08) !important;
}

/* Dark Mode Cards */
[data-theme="dark"] .feature-card,
[data-theme="dark"] .calc-card {
    background: rgba(15, 20, 25, 0.95) !important;
    border: 2px solid rgba(0,255,135,0.3) !important;
    box-shadow: 0 8px 32px rgba(0,0,0,0.8) !important;
}

[data-theme="dark"] .feature-card:hover {
    border-color: #00ff87 !important;
    box-shadow: 0 0 30px rgba(0,255,135,0.5) !important;
}

[data-theme="dark"] .feature-card h5,
[data-theme="dark"] .calc-card-title {
    color: #00ff87 !important;
    text-shadow: 0 0 10px rgba(0,255,135,0.5) !important;
}

[data-theme="dark"] .feature-card p {
    color: #8b9dc3 !important;
}

/* Dark Mode Forms */
[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"] .form-control-custom:focus,
[data-theme="dark"] .form-select-custom:focus {
    border-color: #00ff87 !important;
    box-shadow: 0 0 10px rgba(0,255,135,0.5) !important;
    background: rgba(0, 0, 0, 0.8) !important;
}

/* Dark Mode Buttons */
[data-theme="dark"] .op-btn {
    background: #000000 !important;
    border: 2px solid rgba(0,255,135,0.4) !important;
    color: #00ff87 !important;
}

[data-theme="dark"] .op-btn:hover {
    border-color: #00ff87 !important;
    box-shadow: 0 0 10px rgba(0,255,135,0.5) !important;
}

[data-theme="dark"] .op-btn.active {
    background: #00ff87 !important;
    color: #000000 !important;
}

[data-theme="dark"] .btn-calculate {
    background: #000000 !important;
    border: 3px solid #00ff87 !important;
    color: #00ff87 !important;
    box-shadow: 0 0 20px rgba(0,255,135,0.5) !important;
}

[data-theme="dark"] .btn-calculate:hover {
    background: #00ff87 !important;
    color: #000000 !important;
}

/* Dark Mode Results */
[data-theme="dark"] .result-section {
    background: rgba(0, 0, 0, 0.8) !important;
    border: 2px solid #00ff87 !important;
    box-shadow: 0 0 20px rgba(0,255,135,0.3) !important;
}

[data-theme="dark"] .result-value {
    color: #00ff87 !important;
    text-shadow: 0 0 10px rgba(0,255,135,0.5) !important;
    -webkit-text-fill-color: #00ff87 !important;
}

[data-theme="dark"] .result-formula {
    color: #8b9dc3 !important;
}

[data-theme="dark"] .result-formula code {
    background: rgba(0,255,135,0.12) !important;
    color: #00ff87 !important;
}

/* Dark Mode Steps */
[data-theme="dark"] .step-number {
    background: #000000 !important;
    border: 2px solid #00ff87 !important;
    color: #00ff87 !important;
    box-shadow: 0 0 10px rgba(0,255,135,0.5) !important;
}

[data-theme="dark"] .step-content {
    background: rgba(0,0,0,0.6) !important;
    border: 1px solid rgba(0,255,135,0.3) !important;
    color: #8b9dc3 !important;
}

/* Dark Mode Math Notation */
[data-theme="dark"] .math-notation {
    background: #000000 !important;
    border: 2px solid rgba(0,255,135,0.3) !important;
    color: #00ff87 !important;
}

/* Dark Mode Tabs */
[data-theme="dark"] .tab-nav {
    background: #000000 !important;
    border: 2px solid rgba(0,255,135,0.3) !important;
}

[data-theme="dark"] .tab-btn.active {
    background: #00ff87 !important;
    color: #000000 !important;
}

/* Dark Mode History */
[data-theme="dark"] .history-item {
    background: rgba(15, 20, 25, 0.95) !important;
    border: 2px solid rgba(0,255,135,0.3) !important;
}

[data-theme="dark"] .history-formula {
    color: #00ff87 !important;
}

[data-theme="dark"] .history-result {
    color: #00d9ff !important;
}

/* Dark Mode Theme Toggle */
[data-theme="dark"] .theme-toggle {
    background: #000000 !important;
    border: 2px solid #00ff87 !important;
    color: #00ff87 !important;
    box-shadow: 0 0 10px rgba(0,255,135,0.5) !important;
}

/* Dark Mode Hero */
[data-theme="dark"] .hero-title {
    color: #00ff87 !important;
    text-shadow: 0 0 10px rgba(0,255,135,0.5) !important;
    -webkit-text-fill-color: #00ff87 !important;
}

[data-theme="dark"] .hero-subtitle {
    color: #8b9dc3 !important;
}

/* Dark Mode Feature Icons */
[data-theme="dark"] .feature-icon {
    background: #000000 !important;
    border: 2px solid #00ff87 !important;
    box-shadow: 0 0 10px rgba(0,255,135,0.5) !important;
}