:root {
    /* Futuristic HUD Palette */
    --obsidian-dark: #050505;
    --obsidian-surface: #0a0c10;
    --obsidian-elevated: #12161b;
    
    --electric-cyan: #00F0FF;
    --cyan-glow: rgba(0, 240, 255, 0.3);
    --cyan-gradient: linear-gradient(135deg, #00F0FF 0%, #0072ff 100%);
    
    --electric-mint: #00FF94;
    --radiant-red: #FF2E2E;
    --warning-yellow: #FFD600;
    
    --text-primary: #FFFFFF;
    --text-secondary: #00F0FF;
    --text-muted: #4b6173;
    
    --font-display: 'Bebas Neue', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --border-subtle: rgba(0, 240, 255, 0.05);
    --border-bright: rgba(0, 240, 255, 0.2);
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --obsidian-dark: #f0f4f8;
    --obsidian-surface: #ffffff;
    --obsidian-elevated: #e1e8ed;
    --text-primary: #050505;
    --text-secondary: #0072ff;
    --text-muted: #657786;
    --border-subtle: rgba(0, 114, 255, 0.1);
    --border-bright: rgba(0, 114, 255, 0.3);
}

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

body {
    background-color: var(--obsidian-dark);
    color: var(--text-primary);
    font-family: var(--font-mono);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
}

/* Perspective Grid Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(var(--border-subtle) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px);
    background-size: 50px 50px;
    background-position: center center;
    transform: perspective(500px) rotateX(60deg) translateY(-100px);
    transform-origin: top;
    mask-image: linear-gradient(to bottom, rgba(0,0,0,1), rgba(0,0,0,0));
    pointer-events: none;
    z-index: -1;
}

/* Scanline Effect */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.1) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.03), rgba(0, 255, 0, 0.01), rgba(0, 0, 255, 0.03));
    background-size: 100% 4px, 3px 100%;
    pointer-events: none;
    z-index: 9999;
    opacity: 0.3;
}

/* Layout */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1.5rem 10rem;
}

/* Header & HUD */
.header {
    background: rgba(10, 12, 16, 0.8);
    border-bottom: 1px solid var(--border-bright);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.live-indicator {
    width: 8px;
    height: 8px;
    background-color: var(--electric-mint);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--electric-mint);
    animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
    0% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.2); }
    100% { opacity: 1; transform: scale(1); }
}

.logo {
    font-family: var(--font-display);
    font-size: 2.5rem;
    letter-spacing: 2px;
    color: var(--text-primary);
    text-transform: uppercase;
}

.logo span {
    color: var(--electric-cyan);
    text-shadow: 0 0 20px var(--cyan-glow);
}

.hud-stats {
    display: flex;
    gap: 2rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.stat-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    font-weight: 800;
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--electric-cyan);
    transition: all 0.3s ease;
}

.stat-value.highlight {
    color: white;
    text-shadow: 0 0 15px var(--electric-cyan);
    transform: scale(1.1);
}

/* Theme Toggle */
.theme-toggle {
    cursor: pointer;
    width: 48px;
    height: 24px;
    background: var(--obsidian-elevated);
    border-radius: 0;
    position: relative;
    border: 1px solid var(--border-bright);
}

.theme-toggle::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: var(--electric-cyan);
    border-radius: 0;
    transition: transform var(--transition-fast);
}

[data-theme="light"] .theme-toggle::after {
    transform: translateX(24px);
}

/* Typography & Sections */
.section-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.decorator {
    width: 4px;
    height: 24px;
    background: var(--electric-cyan);
}

h2 {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    letter-spacing: 2px;
    color: var(--text-secondary);
    text-transform: uppercase;
}

h2::before {
    content: "> ";
}

/* Command Center (Form) */
.command-center {
    margin-bottom: 4rem;
}

.premium-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.textarea-wrapper {
    position: relative;
    background: var(--obsidian-surface);
    border: 1px solid var(--border-bright);
    border-radius: 0;
    padding: 1rem;
    transition: var(--transition-smooth);
}

.textarea-wrapper::before {
    content: '';
    position: absolute;
    inset: -1px;
    background: linear-gradient(90deg, var(--electric-cyan), transparent, var(--electric-cyan));
    background-size: 200% 100%;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s;
    animation: slide-gradient 3s linear infinite;
}

@keyframes slide-gradient {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

.textarea-wrapper:focus-within {
    border-color: transparent;
    box-shadow: 0 0 30px var(--cyan-glow);
}

.textarea-wrapper:focus-within::before {
    opacity: 0.5;
}

textarea {
    width: 100%;
    height: 120px;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 1rem;
    resize: none;
    outline: none;
}

textarea::placeholder {
    color: var(--text-muted);
}

.btn-primary {
    background: var(--obsidian-surface);
    border: 1px solid var(--electric-cyan);
    padding: 1.25rem;
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--electric-cyan);
    cursor: pointer;
    letter-spacing: 4px;
    position: relative;
    overflow: hidden;
    transition: var(--transition-fast);
    text-transform: uppercase;
}

.btn-primary:hover {
    background: var(--electric-cyan);
    color: var(--obsidian-dark);
    box-shadow: 0 0 20px var(--cyan-glow);
}

.btn-primary.breathing {
    animation: breathing-cyan 2s ease-in-out infinite;
}

@keyframes breathing-cyan {
    0% { box-shadow: 0 0 5px var(--cyan-glow); }
    50% { box-shadow: 0 0 25px var(--cyan-glow); }
    100% { box-shadow: 0 0 5px var(--cyan-glow); }
}

/* Queue & Cards */
.queue-container {
    display: grid;
    gap: 1.5rem;
}

.idea-card {
    background: var(--obsidian-surface);
    border: 1px solid var(--border-subtle);
    padding: 2rem;
    position: relative;
    transition: var(--transition-smooth);
    border-radius: 0;
}

.idea-card::before, .idea-card::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    border: 1px solid var(--electric-cyan);
}

.idea-card::before {
    top: -1px;
    left: -1px;
    border-right: none;
    border-bottom: none;
}

.idea-card:hover {
    border-color: var(--border-bright);
    background: var(--obsidian-elevated);
    transform: translateX(10px);
}

.idea-text {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 2rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.overall-score {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-family: var(--font-display);
    font-size: 3rem;
    line-height: 1;
    color: var(--electric-cyan);
    opacity: 0.1;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--border-subtle);
    border: 1px solid var(--border-subtle);
}

.metric-tile {
    background: var(--obsidian-dark);
    padding: 1rem 0.5rem;
    text-align: center;
}

.metric-label {
    font-size: 0.5rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.metric-value {
    font-family: var(--font-mono);
    font-size: 1.2rem;
}

.metric-high .metric-value { color: var(--electric-mint); }
.metric-mid .metric-value { color: var(--warning-yellow); }
.metric-low .metric-value { color: var(--radiant-red); }

/* Card States */
.idea-card.worst {
    border-color: var(--radiant-red);
    box-shadow: 0 0 30px rgba(255, 46, 46, 0.2);
}

/* Empty State */
.empty-queue {
    padding: 6rem 2rem;
    text-align: center;
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    font-family: var(--font-mono);
    color: var(--electric-cyan);
    opacity: 0.5;
}

.empty-queue p {
    font-family: var(--font-mono);
    font-size: 1rem;
    letter-spacing: 2px;
}

.cursor {
    display: inline-block;
    width: 10px;
    height: 1.2rem;
    background: var(--electric-cyan);
    margin-left: 5px;
    animation: blink 1s step-end infinite;
    vertical-align: middle;
}

@keyframes blink {
    50% { opacity: 0; }
}

/* Modals */
.api-key-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.98);
    backdrop-filter: blur(20px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background: var(--obsidian-surface);
    border: 1px solid var(--electric-cyan);
    padding: 3rem;
    max-width: 450px;
    width: 90%;
    text-align: center;
    box-shadow: 0 0 50px var(--cyan-glow);
}

.modal-content h3::before {
    content: "// ";
}

.modal-content input {
    width: 100%;
    background: var(--obsidian-dark);
    border: 1px solid var(--border-bright);
    padding: 1rem;
    color: var(--electric-cyan);
    font-family: var(--font-mono);
    margin: 1.5rem 0;
    outline: none;
}

/* Overlays */
.flush-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    pointer-events: none;
}

/* Glitch Animation */
@keyframes glitch-flash {
    0% { filter: invert(0); transform: translateX(0); }
    10% { filter: invert(1); transform: translateX(-10px); }
    20% { filter: invert(0); transform: translateX(10px); }
    30% { transform: translateX(0); }
}

.glitch-active {
    animation: glitch-flash 0.2s ease-out;
}

/* Responsive */
@media (max-width: 600px) {
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .logo {
        font-size: 2rem;
    }
}