/* RETRO WAVE TERMINAL PORTFOLIO - ELECTRIC PURPLE v3.0 */
:root {
    /* ELECTRIC PURPLE THEME */
    --electric-purple: #8a2be2;
    --neon-magenta: #ff1493;
    --cyber-cyan: #00ffff;
    --plasma-orange: #ff4500;
    --bg-void: #080839;
    --panel-void: #0e0e32;
    --panel-glow: #1a1a33;
    --border-glow: #8a2be2aa;
    --text-main: #e6e6ff;
    --text-dim: #9999cc;
    --scanline: rgba(138,43,226,0.12);
    
    /* Gradients */
    --gradient-main: linear-gradient(135deg, var(--electric-purple), var(--neon-magenta), var(--cyber-cyan));
    --gradient-glow: linear-gradient(145deg, rgba(138,43,226,0.3), rgba(255,20,147,0.3));
}

* { 
    box-sizing: border-box; 
    margin: 0; 
    padding: 0; 
    font-family: 'Orbitron', 'Courier New', monospace;
}

body { 
    background: 
        radial-gradient(ellipse at top, #1a0033 0%, transparent 50%),
        radial-gradient(ellipse at bottom, #000033 0%, transparent 50%),
        linear-gradient(135deg, var(--bg-void) 0%, #000 50%, var(--panel-void) 100%);
    color: var(--text-main); 
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* CRT SCANLINES & PLASMA EFFECT */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 1px,
            var(--scanline) 1px,
            var(--scanline) 3px
        ),
        radial-gradient(circle at 20% 80%, rgba(138,43,226,0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,20,147,0.06) 0%, transparent 50%);
    pointer-events: none;
    z-index: 9999;
    opacity: 0.4;
    animation: plasmaShift 8s ease-in-out infinite;
}

body.dark-mode {
    --electric-purple: #ba55d3;
    --neon-magenta: #ff69b4;
    filter: hue-rotate(180deg) saturate(1.2);
}

/* NAVIGATION - QUANTUM CONTROLS */
.dashboard-controls {
    display: flex; 
    justify-content: center; 
    gap: 20px; 
    padding: 35px 20px; 
    flex-wrap: wrap;
    background: 
        linear-gradient(90deg, rgba(0,0,17,0.8), rgba(15,15,35,0.8)),
        radial-gradient(circle at center, rgba(138,43,226,0.1) 0%, transparent 70%);
    backdrop-filter: blur(25px);
    border-bottom: 1px solid rgba(138,43,226,0.3);
}

.dash-btn { 
    padding: 18px 35px; 
    background: linear-gradient(145deg, rgba(15,15,35,0.9), rgba(26,26,51,0.9));
    border: 2px solid var(--electric-purple);
    border-radius: 12px; 
    cursor: pointer; 
    font-weight: 800; 
    color: var(--electric-purple);
    font-size: 1rem;
    letter-spacing: 2px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.25,0.46,0.45,0.94);
    text-transform: uppercase;
}

.dash-btn::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255,255,255,0.3), 
        rgba(138,43,226,0.4),
        transparent);
    transition: left 0.6s;
}

.dash-btn:hover::before { left: 100%; }

.dash-btn:hover { 
    background: var(--gradient-main);
    color: #fff;
    box-shadow: 
        0 0 30px var(--electric-purple),
        0 0 60px var(--neon-magenta),
        inset 0 0 30px rgba(255,255,255,0.4);
    transform: translateY(-5px) scale(1.05);
}

.dash-btn.active {
    background: var(--gradient-main);
    color: #000;
    box-shadow: 
        0 0 40px var(--electric-purple),
        0 0 80px var(--neon-magenta),
        0 0 120px var(--cyber-cyan);
    animation: quantumPulse 1.5s infinite;
}

/* MODULE CARDS - PLASMA PANELS */
.module-card { 
    max-width: 950px; 
    margin: 40px auto; 
    border: 3px solid var(--electric-purple);
    background: linear-gradient(145deg, var(--panel-void), var(--panel-glow));
    border-radius: 20px; 
    overflow: hidden; 
    box-shadow: 
        0 25px 60px rgba(0,0,0,0.8),
        0 0 80px var(--border-glow),
        inset 0 1px 0 rgba(255,255,255,0.1);
    transition: all 0.5s cubic-bezier(0.25,0.46,0.45,0.94);
    position: relative;
}

.module-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 6px;
    background: var(--gradient-main);
    background-size: 400% 100%;
    animation: gradientShift 2.5s ease infinite;
}

.module-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 
        0 40px 80px rgba(0,0,0,0.9),
        0 0 120px var(--border-glow);
}

.module-label { 
    background: var(--gradient-main);
    color: #000; 
    padding: 20px 30px;
    font-weight: 900; 
    text-transform: uppercase; 
    letter-spacing: 3px;
    font-size: 1.2rem;
    position: relative;
    box-shadow: inset 0 2px 10px rgba(0,0,0,0.3);
}

.module-label::after {
    content: '▸▸';
    margin-left: 15px;
    animation: blink 1.2s infinite;
    text-shadow: 0 0 10px #fff;
}

/* EXERCISE SECTIONS */
.exercise-header { 
    padding: 25px; 
    background: linear-gradient(90deg, rgba(138,43,226,0.15), rgba(255,20,147,0.15));
    border-bottom: 2px solid var(--electric-purple); 
}

.ex-title { 
    color: var(--neon-magenta); 
    font-size: 1.4rem; 
    font-weight: 900;
    text-shadow: 
        0 0 15px var(--neon-magenta),
        0 0 25px var(--cyber-cyan);
}

.activity-bar { 
    display: flex; 
    justify-content: center; 
    gap: 15px; 
    padding: 30px; 
    flex-wrap: wrap;
}

.exercise-box { 
    width: 170px; 
    height: 110px; 
    background: var(--gradient-glow);
    border: 3px solid var(--electric-purple);
    border-radius: 15px; 
    font-size: 0.9rem; 
    color: var(--electric-purple);
    display: flex; 
    align-items: center; 
    justify-content: center; 
    text-align: center; 
    cursor: pointer;
    position: relative;
    transition: all 0.4s ease;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.exercise-box::before {
    content: '';
    position: absolute;
    top: -60%; left: -60%;
    width: 220%; height: 220%;
    background: radial-gradient(circle, 
        rgba(255,255,255,0.2) 0%, 
        rgba(138,43,226,0.3) 40%, 
        transparent 70%);
    opacity: 0;
    transition: all 0.4s ease;
}

.exercise-box:hover {
    transform: scale(1.08) translateY(-8px) rotate(2deg);
    box-shadow: 
        0 20px 40px rgba(138,43,226,0.5),
        0 0 60px var(--electric-purple),
        inset 0 0 30px rgba(255,255,255,0.2);
}

.exercise-box:hover::before {
    opacity: 1;
    animation: vortex 3s linear infinite;
}

.btn-label {
    z-index: 3;
    font-weight: 800;
    text-shadow: 
        0 0 12px var(--electric-purple),
        0 0 20px var(--cyber-cyan);
    white-space: normal;
    padding: 12px;
    position: relative;
}

/* ACTIVITY BUTTONS */
.activity-bar button { 
    width: 50px; 
    height: 50px; 
    border: 3px solid var(--electric-purple); 
    border-radius: 12px; 
    background: linear-gradient(145deg, rgba(15,15,35,0.9), rgba(26,26,51,0.9)); 
    cursor: pointer; 
    color: var(--electric-purple);
    font-weight: 900;
    font-size: 1.1rem;
    transition: all 0.3s cubic-bezier(0.68,-0.55,0.265,1.55);
    position: relative;
}

.activity-bar button::after {
    content: attr(data-hover);
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.7rem;
    color: var(--text-dim);
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none;
}

.activity-bar button:hover::after {
    opacity: 1;
    bottom: -35px;
}

.activity-bar button:hover {
    background: var(--gradient-main);
    color: #000;
    box-shadow: 
        0 0 30px var(--electric-purple),
        0 0 50px var(--neon-magenta);
    transform: scale(1.15) rotate(360deg);
}

.activity-bar.tiny button {
    width: 48px; 
    height: 48px; 
    margin: 0 5px;
}

/* TERMINAL VIEW */
.terminal-view { 
    padding: 45px 35px; 
    text-align: left; 
    min-height: 350px;
    background: 
        linear-gradient(145deg, rgba(0,0,0,0.85), rgba(15,15,35,0.9)),
        radial-gradient(circle at top left, rgba(138,43,226,0.1) 0%, transparent 70%);
    position: relative;
    border-top: 2px solid var(--electric-purple);
}

.terminal-view::before {
    content: 'shereanmanahon:~$ ';
    position: absolute;
    top: 20px;
    left: 25px;
    color: var(--cyber-cyan);
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    text-shadow: 
        0 0 8px var(--cyber-cyan),
        0 0 15px var(--electric-purple);
    animation: cursorBlink 1s infinite;
}

/* ACTION BUTTONS */
.action-btn {
    background: var(--gradient-main);
    color: #fff; 
    padding: 15px 30px; 
    border: 2px solid var(--cyber-cyan);
    border-radius: 12px; 
    cursor: pointer; 
    font-weight: 800;
    font-size: 1rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.68,-0.55,0.265,1.55);
    box-shadow: 
        0 8px 25px rgba(138,43,226,0.4),
        0 0 40px var(--neon-magenta);
}

.action-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(255,255,255,0.6) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.6s ease;
}

.action-btn:hover::before {
    width: 300px;
    height: 300px;
}

.action-btn:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 
        0 15px 40px rgba(138,43,226,0.6),
        0 0 60px var(--neon-magenta),
        0 0 100px var(--cyber-cyan);
}

.action-btn:active {
    transform: translateY(-1px) scale(1.02);
}

/* INPUTS */
input { 
    background: linear-gradient(145deg, rgba(15,15,35,0.95), rgba(26,26,51,0.95));
    border: 3px solid var(--electric-purple);
    color: var(--text-main);
    padding: 15px 20px; 
    border-radius: 12px;
    font-size: 1.1rem;
    transition: all 0.4s ease;
    width: 100%; 
    max-width: 450px;
    font-family: 'Courier New', monospace;
    letter-spacing: 1px;
}

input:focus {
    outline: none;
    border-color: var(--cyber-cyan);
    box-shadow: 
        0 0 30px var(--cyber-cyan),
        0 0 50px var(--electric-purple),
        inset 0 0 20px rgba(0,255,255,0.2);
    transform: scale(1.03);
}

/* HIDDEN CLASS */
.hidden { 
    display: none !important; 
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    transition: all 0.5s cubic-bezier(0.68,-0.55,0.265,1.55);
}

/* EXERCISE 4 SPECIFIC */
.ex4-container-flex {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin: 35px 0;
}

.input-group {
    background: linear-gradient(145deg, rgba(138,43,226,0.08), rgba(255,20,147,0.08));
    padding: 25px;
    border-radius: 15px;
    border: 2px solid var(--electric-purple);
    backdrop-filter: blur(10px);
}

.input-group label {
    display: block;
    margin-bottom: 15px;
    color: var(--cyber-cyan);
    font-weight: 800;
    text-transform: uppercase;
    font-size: 1rem;
    letter-spacing: 1.5px;
}

.score-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
}

.score-row {
    display: flex;
    gap: 10