/* 
 * Nişo - Retro Futuristic 90s Design System
 * Aesthetic: Y2K, Vaporwave, Synthwave, Refined Nostalgia
 */

:root {
    /* Core Colors */
    --neon-pink: #FF2E97;
    --neon-cyan: #00F5FF;
    --neon-purple: #B24BF3;
    --neon-yellow: #FFE600;
    
    /* Backgrounds */
    --bg-deep: #0D0221;
    --bg-card: #1A0A2E;
    --bg-elevated: #2D1B4E;
    
    /* Text */
    --text-primary: #FFFFFF;
    --text-secondary: #B8B8D1;
    --text-muted: #6B6B8D;
    
    /* Gradients */
    --gradient-main: linear-gradient(135deg, #FF2E97 0%, #B24BF3 50%, #00F5FF 100%);
    --gradient-card: linear-gradient(145deg, rgba(178,75,243,0.1) 0%, rgba(0,245,255,0.05) 100%);
    --gradient-glow: linear-gradient(180deg, rgba(255,46,151,0.3) 0%, transparent 100%);
}

* {
    box-sizing: border-box;
}

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

/* Grid Background */
.grid-bg {
    background-image: 
        linear-gradient(rgba(178,75,243,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(178,75,243,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
}

/* Scanlines Effect */
.scanlines::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.1) 2px,
        rgba(0, 0, 0, 0.1) 4px
    );
    pointer-events: none;
    z-index: 1000;
    opacity: 0.3;
}

/* Typography */
.font-display {
    font-family: 'Orbitron', sans-serif;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.text-gradient {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-glow {
    text-shadow: 0 0 10px var(--neon-pink), 0 0 20px var(--neon-pink), 0 0 40px var(--neon-pink);
}

.text-glow-cyan {
    text-shadow: 0 0 10px var(--neon-cyan), 0 0 20px var(--neon-cyan);
}

/* Cards */
.retro-card {
    background: var(--bg-card);
    border: 1px solid rgba(178,75,243,0.3);
    position: relative;
    overflow: hidden;
}

.retro-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-main);
}

.retro-card:hover {
    border-color: var(--neon-pink);
    box-shadow: 0 0 30px rgba(255,46,151,0.2), inset 0 0 30px rgba(255,46,151,0.05);
}

/* Buttons */
.btn-retro {
    background: transparent;
    border: 2px solid var(--neon-pink);
    color: var(--neon-pink);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    padding: 12px 24px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-retro:hover {
    background: var(--neon-pink);
    color: var(--bg-deep);
    box-shadow: 0 0 20px var(--neon-pink), 0 0 40px rgba(255,46,151,0.5);
}

.btn-retro-filled {
    background: var(--gradient-main);
    border: none;
    color: white;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    padding: 12px 24px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all 0.3s ease;
}

.btn-retro-filled:hover {
    box-shadow: 0 0 30px rgba(255,46,151,0.5);
    transform: translateY(-2px);
}

.btn-retro-cyan {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
}

.btn-retro-cyan:hover {
    background: var(--neon-cyan);
    color: var(--bg-deep);
    box-shadow: 0 0 20px var(--neon-cyan);
}

/* Input Fields */
.input-retro {
    background: var(--bg-elevated);
    border: 1px solid rgba(178,75,243,0.3);
    color: var(--text-primary);
    padding: 12px 16px;
    font-family: 'Space Grotesk', sans-serif;
    transition: all 0.3s ease;
}

.input-retro:focus {
    outline: none;
    border-color: var(--neon-cyan);
    box-shadow: 0 0 15px rgba(0,245,255,0.3);
}

.input-retro::placeholder {
    color: var(--text-muted);
}

/* Progress Bars */
.progress-retro {
    background: var(--bg-elevated);
    height: 8px;
    overflow: hidden;
}

.progress-retro .progress-fill {
    background: var(--gradient-main);
    height: 100%;
    transition: width 0.5s ease;
    box-shadow: 0 0 10px var(--neon-pink);
}

/* Glowing Elements */
.glow-box {
    box-shadow: 0 0 20px rgba(178,75,243,0.3), inset 0 0 20px rgba(178,75,243,0.1);
}

.glow-border {
    position: relative;
}

.glow-border::after {
    content: '';
    position: absolute;
    inset: -2px;
    background: var(--gradient-main);
    z-index: -1;
    filter: blur(10px);
    opacity: 0.5;
}

/* Floating Elements */
@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(5deg); }
}

@keyframes pulse-glow {
    0%, 100% { opacity: 1; filter: drop-shadow(0 0 10px currentColor); }
    50% { opacity: 0.7; filter: drop-shadow(0 0 20px currentColor); }
}

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

.animate-float {
    animation: float 4s ease-in-out infinite;
}

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

.animate-slide-in {
    animation: slide-in 0.5s ease-out forwards;
}

/* Geometric Shapes */
.shape-diamond {
    width: 20px;
    height: 20px;
    background: var(--neon-cyan);
    transform: rotate(45deg);
    box-shadow: 0 0 10px var(--neon-cyan);
}

.shape-line {
    height: 2px;
    background: var(--gradient-main);
    flex: 1;
}

/* Option Cards for Quizzes */
.option-retro {
    background: var(--bg-elevated);
    border: 1px solid rgba(178,75,243,0.3);
    padding: 16px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.option-retro:hover {
    border-color: var(--neon-cyan);
    background: rgba(0,245,255,0.05);
}

.option-retro.selected {
    border-color: var(--neon-pink);
    background: rgba(255,46,151,0.1);
    box-shadow: 0 0 20px rgba(255,46,151,0.2);
}

.option-retro.correct,
.quiz-option.correct {
    border-color: #00FF88 !important;
    background: rgba(0,255,136,0.15) !important;
    box-shadow: 0 0 20px rgba(0,255,136,0.3);
}

.option-retro.wrong,
.quiz-option.wrong {
    border-color: #FF4444 !important;
    background: rgba(255,68,68,0.15) !important;
    box-shadow: 0 0 20px rgba(255,68,68,0.3);
}

.quiz-option {
    transition: all 0.3s ease;
    cursor: pointer;
}

.quiz-option:hover:not(.correct):not(.wrong) {
    border-color: var(--neon-cyan);
    background: rgba(0,245,255,0.05);
}

/* Stats Display */
.stat-retro {
    text-align: center;
    padding: 20px;
    background: var(--bg-elevated);
    border: 1px solid rgba(178,75,243,0.2);
}

.stat-retro .stat-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-retro .stat-label {
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 4px;
}

/* Badge Styles */
.badge-retro {
    display: inline-block;
    padding: 4px 12px;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 1px solid;
}

.badge-pink {
    border-color: var(--neon-pink);
    color: var(--neon-pink);
}

.badge-cyan {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
}

.badge-purple {
    border-color: var(--neon-purple);
    color: var(--neon-purple);
}

/* Compatibility Meter */
.compat-meter {
    position: relative;
    width: 200px;
    height: 200px;
}

.compat-meter svg {
    transform: rotate(-90deg);
}

.compat-meter .meter-bg {
    fill: none;
    stroke: var(--bg-elevated);
    stroke-width: 12;
}

.compat-meter .meter-fill {
    fill: none;
    stroke: url(#gradient);
    stroke-width: 12;
    stroke-linecap: round;
    transition: stroke-dashoffset 1s ease;
}

.compat-meter .meter-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    body {
        -webkit-text-size-adjust: 100%;
        -ms-text-size-adjust: 100%;
    }
    
    .font-display {
        font-size: 0.85em;
    }
    
    .retro-card {
        padding: 16px;
        margin: 8px;
    }
    
    .btn-retro {
        padding: 12px 20px;
        font-size: 0.8rem;
        width: 100%;
        text-align: center;
    }
    
    .input-retro {
        font-size: 16px !important; /* Prevents iOS zoom on focus */
    }
    
    /* Fix content overflow */
    .container, main, section {
        max-width: 100vw;
        overflow-x: hidden;
        padding-left: 12px;
        padding-right: 12px;
    }
    
    /* Fix tables on mobile */
    table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
    
    /* Quiz result cards */
    .result-card, .stat-card, .quiz-card {
        width: 100%;
        max-width: 100%;
        margin: 8px 0;
    }
    
    /* Flex adjustments */
    .flex-mobile-col {
        flex-direction: column;
    }
    
    /* Grid adjustments */
    .grid {
        grid-template-columns: 1fr !important;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 13px;
    }
    
    .font-display {
        font-size: 0.75em;
        letter-spacing: 0.02em;
    }
    
    .retro-card {
        padding: 12px;
        border-radius: 8px;
    }
    
    h1, .text-4xl { font-size: 1.5rem !important; }
    h2, .text-3xl { font-size: 1.25rem !important; }
    h3, .text-2xl { font-size: 1.1rem !important; }
    
    /* Button full width on small screens */
    button, .btn-retro, [type="submit"] {
        min-height: 48px;
        font-size: 0.85rem;
    }
}

/* Prevent double-tap zoom on interactive elements */
button, a, input, select, textarea, label, .clickable {
    touch-action: manipulation;
}

/* Ensure proper touch targets */
a, button, input[type="submit"], input[type="button"], .btn-retro {
    min-height: 44px;
    min-width: 44px;
}

/* Fix iOS input zoom */
input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="tel"],
select,
textarea {
    font-size: 16px !important;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

/* Prevent horizontal scroll */
html, body {
    max-width: 100%;
    overflow-x: hidden;