/* ============================================
   BOTZWAR V2 - CINEMATIC EDITION
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700;800;900&family=Rajdhani:wght@300;400;500;600;700&family=Share+Tech+Mono&display=swap');

/* Fallback if Google Fonts blocked */
:root { --font-display: 'Orbitron', 'Arial Black', sans-serif; --font-body: 'Rajdhani', 'Segoe UI', sans-serif; --font-mono: 'Share Tech Mono', 'Courier New', monospace; }

:root {
    --bg-void: #030508;
    --bg-dark: #0a0e17;
    --bg-panel: #0d1320;
    --bg-card: #111827;
    --bg-elevated: #1a2236;
    --border: #1e293b;
    --border-glow: #2563eb33;
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #475569;
    --neon-blue: #3b82f6;
    --neon-cyan: #06b6d4;
    --neon-purple: #8b5cf6;
    --neon-pink: #ec4899;
    --neon-red: #ef4444;
    --neon-orange: #f97316;
    --neon-yellow: #f59e0b;
    --neon-green: #10b981;
    --gold: #fbbf24;
    --rarity-common: #94a3b8;
    --rarity-uncommon: #10b981;
    --rarity-rare: #3b82f6;
    --rarity-epic: #8b5cf6;
    --rarity-legendary: #f59e0b;
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Rajdhani', sans-serif;
    --font-mono: 'Share Tech Mono', monospace;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
    font-family: var(--font-body); background: var(--bg-void);
    color: var(--text-primary); min-height: 100vh; overflow-x: hidden;
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--neon-blue); border-radius: 3px; }

/* BG EFFECTS */
.bg-grid {
    position: fixed; inset: 0; z-index: 0; pointer-events: none;
    background-image: linear-gradient(rgba(59,130,246,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}
.bg-particles { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.particle {
    position: absolute; width: 2px; height: 2px; background: var(--neon-cyan);
    border-radius: 50%; opacity: 0; animation: particleFloat 8s infinite;
}
@keyframes particleFloat {
    0% { opacity: 0; transform: translateY(100vh) scale(0); }
    10% { opacity: 0.6; } 90% { opacity: 0.6; }
    100% { opacity: 0; transform: translateY(-10vh) scale(1); }
}

/* LAYOUT */
.app-wrapper { position: relative; z-index: 1; min-height: 100vh; display: flex; flex-direction: column; }
.main-content { flex: 1; padding: 1rem; max-width: 1400px; margin: 0 auto; width: 100%; }

/* TOP BAR */
.top-bar {
    background: linear-gradient(180deg, rgba(10,14,23,0.98), rgba(10,14,23,0.85));
    backdrop-filter: blur(20px); border-bottom: 1px solid var(--border);
    padding: 0.6rem 1.5rem; display: flex; align-items: center; justify-content: space-between;
    position: sticky; top: 0; z-index: 100;
}
.logo {
    font-family: var(--font-display); font-size: 1.4rem; font-weight: 900;
    background: linear-gradient(135deg, var(--neon-cyan), var(--neon-blue), var(--neon-purple));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    letter-spacing: 4px; cursor: pointer;
}
.logo::after { content: '⚡'; -webkit-text-fill-color: initial; margin-left: 4px; font-size: 1rem; }
.nav-links { display: flex; gap: 0.2rem; flex-wrap: wrap; }
.nav-btn {
    font-family: var(--font-display); font-size: 0.6rem; font-weight: 600;
    padding: 0.45rem 0.8rem; border: 1px solid transparent; background: transparent;
    color: var(--text-secondary); cursor: pointer; border-radius: 6px;
    letter-spacing: 1.5px; text-transform: uppercase; transition: all 0.2s; white-space: nowrap;
}
.nav-btn:hover, .nav-btn.active {
    color: var(--neon-cyan); border-color: var(--neon-cyan);
    background: rgba(6,182,212,0.08); text-shadow: 0 0 10px rgba(6,182,212,0.5);
}
.user-stats { display: flex; align-items: center; gap: 0.6rem; font-family: var(--font-mono); font-size: 0.75rem; }
.stat-pill {
    display: flex; align-items: center; gap: 0.3rem; padding: 0.25rem 0.6rem;
    background: var(--bg-panel); border: 1px solid var(--border); border-radius: 20px;
}
.stat-pill .val { color: var(--neon-cyan); font-weight: 600; }

/* SCREENS */
.screen { display: none; animation: fadeIn 0.3s ease; }
.screen.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
.page-title {
    font-family: var(--font-display); font-size: 1.6rem; font-weight: 800;
    margin-bottom: 1.5rem; letter-spacing: 2px; text-transform: uppercase;
    background: linear-gradient(135deg, var(--text-primary), var(--neon-cyan));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

/* CARDS */
.card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
    padding: 1.25rem; position: relative; overflow: hidden; transition: all 0.3s;
}
.card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, transparent, var(--neon-blue), transparent);
    opacity: 0; transition: opacity 0.3s;
}
.card:hover::before { opacity: 1; }
.card:hover { border-color: var(--border-glow); transform: translateY(-2px); box-shadow: 0 8px 32px rgba(0,0,0,0.4); }

/* ROBOT CARDS */
.robot-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.25rem; }
.robot-card {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px;
    overflow: hidden; cursor: pointer; transition: all 0.3s; position: relative;
}
.robot-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.5); }
.robot-card .robot-visual {
    height: 200px; display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
}
.robot-card .robot-visual::before {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(ellipse at center bottom, var(--robot-glow, rgba(59,130,246,0.15)), transparent 70%);
}
.robot-card .robot-svg { width: 140px; height: 160px; position: relative; z-index: 1; filter: drop-shadow(0 0 20px var(--robot-glow, rgba(59,130,246,0.3))); }
.robot-card .robot-info { padding: 0.75rem 1rem; }
.robot-card .robot-name { font-family: var(--font-display); font-size: 1rem; font-weight: 700; letter-spacing: 2px; margin-bottom: 0.2rem; }
.robot-card .robot-class { font-family: var(--font-mono); font-size: 0.65rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 0.5rem; }
.stat-row { display: flex; align-items: center; gap: 0.4rem; font-size: 0.7rem; margin-bottom: 0.2rem; }
.stat-row .stat-label { width: 32px; font-family: var(--font-mono); color: var(--text-muted); text-transform: uppercase; font-size: 0.55rem; letter-spacing: 1px; }
.stat-row .stat-bar-bg { flex: 1; height: 5px; background: var(--bg-dark); border-radius: 3px; overflow: hidden; }
.stat-row .stat-bar-fill { height: 100%; border-radius: 3px; transition: width 0.6s ease; }
.stat-row .stat-val { width: 26px; text-align: right; font-family: var(--font-mono); font-size: 0.65rem; color: var(--text-secondary); }
.robot-card .lock-overlay {
    position: absolute; inset: 0; background: rgba(3,5,8,0.85);
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    z-index: 5; backdrop-filter: blur(4px);
}
.lock-overlay .lock-icon { font-size: 2rem; margin-bottom: 0.5rem; opacity: 0.6; }
.lock-overlay .lock-text { font-family: var(--font-display); font-size: 0.65rem; color: var(--text-muted); letter-spacing: 1.5px; }

/* ============================================
   BATTLE ARENA V2 - CANVAS BASED
   ============================================ */
.arena-wrapper {
    position: relative; border-radius: 16px; overflow: hidden;
    border: 1px solid var(--border); margin-bottom: 1.5rem;
    background: var(--bg-void);
}
#battle-canvas {
    display: block; width: 100%; height: auto;
    background: transparent; cursor: default;
}
.arena-hud {
    position: absolute; top: 0; left: 0; right: 0;
    display: flex; justify-content: space-between; padding: 1rem 1.5rem;
    pointer-events: none; z-index: 10;
}
.hud-fighter {
    display: flex; flex-direction: column; gap: 0.3rem; min-width: 200px;
}
.hud-fighter.p2 { align-items: flex-end; }
.hud-name {
    font-family: var(--font-display); font-size: 0.85rem; font-weight: 700;
    letter-spacing: 1.5px; text-shadow: 0 0 10px rgba(0,0,0,0.8);
}
.hud-level { font-family: var(--font-mono); font-size: 0.65rem; color: var(--text-muted); }
.hud-hp-outer {
    width: 200px; height: 14px; background: rgba(0,0,0,0.6);
    border: 1px solid var(--border); border-radius: 7px; overflow: hidden;
    position: relative;
}
.hud-hp-fill {
    height: 100%; border-radius: 7px; transition: width 0.3s ease;
    position: relative; overflow: hidden;
}
.hud-hp-fill::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(255,255,255,0.2), transparent);
}
.hud-hp-text {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
    font-family: var(--font-mono); font-size: 0.6rem; font-weight: 700;
    text-shadow: 0 1px 2px rgba(0,0,0,0.8);
}
.hud-energy-outer {
    width: 200px; height: 6px; background: rgba(0,0,0,0.6);
    border-radius: 3px; overflow: hidden;
}
.hud-energy-fill {
    height: 100%; border-radius: 3px; background: var(--neon-yellow);
    transition: width 0.3s ease;
}

/* CINEMATIC OVERLAY */
.cinematic-overlay {
    position: absolute; inset: 0; z-index: 20; pointer-events: none;
    display: none; align-items: center; justify-content: center;
}
.cinematic-overlay.active { display: flex; }

.impact-text {
    font-family: var(--font-display); font-weight: 900; text-transform: uppercase;
    letter-spacing: 4px; text-align: center; opacity: 0;
    text-shadow: 0 0 40px currentColor, 0 0 80px currentColor;
}
.impact-text.show { animation: impactSlam 0.6s ease forwards; }
@keyframes impactSlam {
    0% { opacity: 0; transform: scale(3) rotate(-5deg); }
    30% { opacity: 1; transform: scale(1.1) rotate(1deg); }
    50% { transform: scale(0.95) rotate(0deg); }
    100% { opacity: 0.9; transform: scale(1); }
}

.screen-flash {
    position: absolute; inset: 0; z-index: 15; pointer-events: none;
    opacity: 0; transition: opacity 0.05s;
}
.screen-flash.white { background: white; }
.screen-flash.red { background: rgba(239,68,68,0.4); }
.screen-flash.blue { background: rgba(59,130,246,0.4); }
.screen-flash.yellow { background: rgba(245,158,11,0.5); }
.screen-flash.active { opacity: 1; }

/* ROUND COUNTER */
.round-display {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    font-family: var(--font-display); z-index: 10; pointer-events: none; opacity: 0;
}
.round-display.show { animation: roundPop 1s ease forwards; }
@keyframes roundPop {
    0% { opacity: 0; transform: translate(-50%,-50%) scale(0.5); }
    20% { opacity: 1; transform: translate(-50%,-50%) scale(1.2); }
    40% { transform: translate(-50%,-50%) scale(1); }
    80% { opacity: 1; }
    100% { opacity: 0; transform: translate(-50%,-50%) scale(0.8); }
}

/* VS SPLASH */
.vs-splash {
    position: absolute; inset: 0; z-index: 30; display: none;
    align-items: center; justify-content: center; background: rgba(3,5,8,0.95);
}
.vs-splash.active { display: flex; }
.vs-splash-inner { text-align: center; }
.vs-fighters { display: flex; align-items: center; gap: 2rem; margin-bottom: 1rem; }
.vs-fighter-card { text-align: center; }
.vs-fighter-card .vs-robot-svg { width: 150px; height: 180px; filter: drop-shadow(0 0 30px var(--robot-glow)); }
.vs-fighter-card .vs-name { font-family: var(--font-display); font-size: 1rem; font-weight: 700; margin-top: 0.5rem; letter-spacing: 2px; }
.vs-text {
    font-family: var(--font-display); font-size: 4rem; font-weight: 900;
    background: linear-gradient(135deg, var(--neon-red), var(--neon-orange));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    animation: vsPulse 0.8s ease infinite alternate;
}
@keyframes vsPulse { from { transform: scale(1); } to { transform: scale(1.1); } }

/* BATTLE LOG V2 */
.battle-log {
    max-height: 280px; overflow-y: auto; background: var(--bg-dark);
    border: 1px solid var(--border); border-radius: 12px; padding: 0.75rem;
    font-family: var(--font-mono); font-size: 0.75rem; line-height: 1.7;
}
.log-entry { padding: 0.2rem 0; border-bottom: 1px solid rgba(30,41,59,0.3); }
.log-entry .round-num { color: var(--neon-blue); font-weight: 600; }
.log-entry .attacker-name { color: var(--neon-cyan); font-weight: 600; }
.log-entry .damage-val { color: var(--neon-red); font-weight: 700; }
.log-entry .critical-tag { color: var(--neon-orange); font-weight: 700; }
.log-entry .evade-tag { color: var(--neon-purple); font-weight: 600; }
.log-entry .special-tag { color: var(--neon-pink); font-weight: 700; }
.log-entry .heal-tag { color: var(--neon-green); }

/* PROMPT WAR */
.prompt-input-area {
    background: var(--bg-dark); border: 2px solid var(--border); border-radius: 12px;
    padding: 1rem; margin: 1rem 0; transition: border-color 0.3s;
}
.prompt-input-area:focus-within { border-color: var(--neon-cyan); box-shadow: 0 0 20px rgba(6,182,212,0.1); }
.prompt-textarea {
    width: 100%; min-height: 100px; background: transparent; border: none;
    color: var(--text-primary); font-family: var(--font-body); font-size: 1rem;
    resize: vertical; outline: none; line-height: 1.6;
}
.prompt-char-count { text-align: right; font-family: var(--font-mono); font-size: 0.65rem; color: var(--text-muted); margin-top: 0.5rem; }
.prompt-score-display { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; margin: 1.5rem 0; }
.score-card { background: var(--bg-panel); border: 1px solid var(--border); border-radius: 12px; padding: 1.25rem; text-align: center; }
.score-card .score-total { font-family: var(--font-display); font-size: 2.5rem; font-weight: 900; }
.score-card.winner { border-color: var(--neon-green); box-shadow: 0 0 30px rgba(16,185,129,0.15); }
.score-card.winner .score-total { color: var(--neon-green); }
.score-card.loser .score-total { color: var(--neon-red); }
.score-breakdown { display: grid; grid-template-columns: repeat(4,1fr); gap: 0.5rem; margin-top: 0.75rem; }
.score-breakdown .sb-item { font-family: var(--font-mono); font-size: 0.6rem; color: var(--text-muted); text-transform: uppercase; }
.score-breakdown .sb-val { font-size: 1rem; font-weight: 700; color: var(--text-primary); font-family: var(--font-display); }

/* BUTTONS */
.btn {
    font-family: var(--font-display); font-size: 0.7rem; font-weight: 700;
    padding: 0.6rem 1.3rem; border: 2px solid var(--neon-blue); background: transparent;
    color: var(--neon-blue); cursor: pointer; border-radius: 8px;
    letter-spacing: 2px; text-transform: uppercase; transition: all 0.2s;
    display: inline-flex; align-items: center; gap: 0.5rem;
}
.btn:hover { background: var(--neon-blue); color: var(--bg-void); box-shadow: 0 0 20px rgba(59,130,246,0.3); }
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--neon-blue); color: #fff; }
.btn-primary:hover { background: #2563eb; box-shadow: 0 0 30px rgba(59,130,246,0.4); }
.btn-danger { border-color: var(--neon-red); color: var(--neon-red); }
.btn-danger:hover { background: var(--neon-red); color: #fff; }
.btn-success { border-color: var(--neon-green); color: var(--neon-green); }
.btn-success:hover { background: var(--neon-green); color: var(--bg-void); }
.btn-purple { border-color: var(--neon-purple); color: var(--neon-purple); }
.btn-purple:hover { background: var(--neon-purple); color: #fff; }
.btn-orange { border-color: var(--neon-orange); color: var(--neon-orange); }
.btn-orange:hover { background: var(--neon-orange); color: var(--bg-void); }
.btn-lg { padding: 0.8rem 2rem; font-size: 0.8rem; }
.btn-sm { padding: 0.35rem 0.7rem; font-size: 0.55rem; letter-spacing: 1px; }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* FORMS */
.form-group { margin-bottom: 1rem; }
.form-label { display: block; font-family: var(--font-display); font-size: 0.6rem; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text-muted); margin-bottom: 0.35rem; }
.form-input {
    width: 100%; padding: 0.6rem 0.9rem; background: var(--bg-dark);
    border: 1px solid var(--border); border-radius: 8px; color: var(--text-primary);
    font-family: var(--font-body); font-size: 0.95rem; outline: none; transition: border-color 0.2s;
}
.form-input:focus { border-color: var(--neon-cyan); }
select.form-input { cursor: pointer; }

/* MODALS */
.modal-overlay {
    position: fixed; inset: 0; background: rgba(3,5,8,0.85); backdrop-filter: blur(8px);
    display: none; align-items: center; justify-content: center; z-index: 200;
}
.modal-overlay.active { display: flex; }
.modal {
    background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px;
    padding: 2rem; width: 90%; max-width: 500px; max-height: 90vh; overflow-y: auto;
    animation: modalIn 0.3s ease;
}
@keyframes modalIn { from { opacity: 0; transform: scale(0.95); } }
.modal-title { font-family: var(--font-display); font-size: 1.1rem; font-weight: 800; letter-spacing: 2px; margin-bottom: 1.5rem; text-align: center; }

/* LEADERBOARD */
.lb-table { width: 100%; border-collapse: collapse; font-family: var(--font-mono); font-size: 0.8rem; }
.lb-table th { font-family: var(--font-display); font-size: 0.55rem; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text-muted); padding: 0.65rem; border-bottom: 1px solid var(--border); text-align: left; }
.lb-table td { padding: 0.65rem; border-bottom: 1px solid rgba(30,41,59,0.3); }
.lb-table tr:hover { background: rgba(59,130,246,0.05); }
.rank-badge { display: inline-flex; align-items: center; justify-content: center; width: 26px; height: 26px; border-radius: 50%; font-weight: 700; font-size: 0.7rem; }
.rank-1 { background: linear-gradient(135deg, #fbbf24, #f59e0b); color: var(--bg-void); }
.rank-2 { background: linear-gradient(135deg, #94a3b8, #64748b); color: var(--bg-void); }
.rank-3 { background: linear-gradient(135deg, #d97706, #b45309); color: #fff; }
.tier-badge { font-family: var(--font-display); font-size: 0.55rem; letter-spacing: 1px; padding: 0.15rem 0.5rem; border-radius: 4px; text-transform: uppercase; font-weight: 700; }
.tier-bronze { background: rgba(180,83,9,0.2); color: #d97706; border: 1px solid rgba(217,119,6,0.3); }
.tier-silver { background: rgba(148,163,184,0.2); color: #94a3b8; border: 1px solid rgba(148,163,184,0.3); }
.tier-gold { background: rgba(251,191,36,0.2); color: #fbbf24; border: 1px solid rgba(251,191,36,0.3); }
.tier-platinum { background: rgba(6,182,212,0.2); color: #06b6d4; border: 1px solid rgba(6,182,212,0.3); }
.tier-diamond { background: rgba(139,92,246,0.2); color: #8b5cf6; border: 1px solid rgba(139,92,246,0.3); }
.tier-champion { background: rgba(236,72,153,0.2); color: #ec4899; border: 1px solid rgba(236,72,153,0.3); }

/* RESULT BANNER */
.result-banner {
    text-align: center; padding: 2rem; margin: 1rem 0;
    background: var(--bg-panel); border: 1px solid var(--border); border-radius: 16px;
}
.result-text {
    font-family: var(--font-display); font-size: clamp(2rem,5vw,3.5rem); font-weight: 900;
    letter-spacing: 6px; animation: resultPulse 1.5s ease infinite;
}
.result-text.victory { background: linear-gradient(135deg,var(--neon-green),var(--neon-cyan)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.result-text.defeat { background: linear-gradient(135deg,var(--neon-red),var(--neon-orange)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.result-text.draw-result { background: linear-gradient(135deg,var(--neon-yellow),var(--neon-orange)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
@keyframes resultPulse { 0%,100% { transform: scale(1); } 50% { transform: scale(1.02); } }
.rewards-row { display: flex; gap: 1.5rem; justify-content: center; margin-top: 1.5rem; flex-wrap: wrap; }
.reward-item { text-align: center; padding: 0.75rem 1.25rem; background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; }
.reward-item .reward-val { font-family: var(--font-display); font-size: 1.3rem; font-weight: 900; color: var(--neon-cyan); }
.reward-item .reward-label { font-family: var(--font-display); font-size: 0.55rem; color: var(--text-muted); letter-spacing: 1.5px; margin-top: 0.15rem; }

/* SPINNER */
.spinner { width: 40px; height: 40px; border: 3px solid var(--border); border-top-color: var(--neon-cyan); border-radius: 50%; animation: spin 0.8s linear infinite; margin: 2rem auto; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { font-family: var(--font-display); font-size: 0.75rem; letter-spacing: 3px; color: var(--text-muted); text-align: center; animation: pulse 1.5s ease infinite; }
@keyframes pulse { 0%,100% { opacity: 0.5; } 50% { opacity: 1; } }

/* UTILITY */
.flex { display: flex; } .flex-col { flex-direction: column; } .items-center { align-items: center; }
.justify-center { justify-content: center; } .justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; } .gap-2 { gap: 1rem; } .gap-3 { gap: 1.5rem; }
.text-center { text-align: center; } .mt-1 { margin-top: 0.5rem; } .mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; } .mb-1 { margin-bottom: 0.5rem; } .mb-2 { margin-bottom: 1rem; }
.w-full { width: 100%; } .hidden { display: none !important; }

/* RESPONSIVE */
@media (max-width: 768px) {
    .top-bar { flex-wrap: wrap; gap: 0.5rem; padding: 0.5rem 0.75rem; }
    .nav-links { width: 100%; order: 3; overflow-x: auto; }
    .nav-btn { padding: 0.35rem 0.5rem; font-size: 0.5rem; }
    .robot-grid { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
    .hud-hp-outer { width: 140px; }
    .prompt-score-display { grid-template-columns: 1fr; }
    .vs-fighters { flex-direction: column; gap: 1rem; }
}
@media (max-width: 900px) {
    #builder-content > div:first-child { grid-template-columns: 1fr !important; }
    #builder-grid { grid-template-columns: 1fr !important; }
    #bld-slots { grid-template-columns: 1fr !important; }
    #online-grid { grid-template-columns: 1fr !important; }
}

/* Builder animations */
@keyframes bldShake {
    0% { transform: rotate(0deg) scale(1); }
    20% { transform: rotate(-3deg) scale(1.02); }
    40% { transform: rotate(3deg) scale(1.02); }
    60% { transform: rotate(-2deg) scale(1.01); }
    80% { transform: rotate(1deg) scale(1); }
    100% { transform: rotate(0deg) scale(1); }
}