/**
 * dsa-monster.css - Premium styles for all DSA visualizer pages
 * Brings DSA pages to OS-section power level
 */

/* ═══ IMPORTS ═══════════════════════════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700;800;900&family=JetBrains+Mono:wght@400;600&display=swap');

/* ═══ MONSTER ROOT VARIABLES ════════════════════════════════════════════════ */
:root {
    --monster-primary: hsl(258, 89%, 66%);
    --monster-accent: hsl(189, 100%, 52%);
    --monster-gold: hsl(45, 100%, 60%);
    --monster-danger: hsl(0, 85%, 63%);
    --monster-success: hsl(145, 75%, 50%);
    --monster-glow-primary: 0 0 30px hsla(258,89%,66%,.5), 0 0 60px hsla(258,89%,66%,.2);
    --monster-glow-accent: 0 0 30px hsla(189,100%,52%,.5), 0 0 60px hsla(189,100%,52%,.2);
    --monster-glow-gold: 0 0 30px hsla(45,100%,60%,.5), 0 0 60px hsla(45,100%,60%,.2);
    --glass-dark: rgba(10, 10, 20, 0.85);
    --glass-card: rgba(255, 255, 255, 0.04);
    --glass-border-glow: rgba(139, 92, 246, 0.3);
    --neon-green: hsl(140, 100%, 55%);
    --neon-pink: hsl(320, 100%, 65%);
}

/* ═══ DASHBOARD LAYOUT ══════════════════════════════════════════════════════ */
.monster-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 24px;
    margin-top: 24px;
}

.monster-layout .main-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.monster-layout .side-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ═══ STAT CARDS ═════════════════════════════════════════════════════════════ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--glass-card);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    padding: 16px 18px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--stat-color, var(--monster-primary));
    opacity: 0.8;
}

.stat-card:hover {
    transform: translateY(-3px);
    border-color: var(--glass-border-glow);
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

.stat-icon {
    font-size: 1.3rem;
    margin-bottom: 8px;
    opacity: 0.8;
}

.stat-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.7rem;
    font-weight: 700;
    color: var(--stat-color, var(--monster-primary));
    line-height: 1;
    transition: all 0.3s ease;
}

.stat-value.pulse-update {
    animation: statPulse 0.4s ease;
}

.stat-label {
    font-size: 0.72rem;
    color: var(--text-muted, #888);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    margin-top: 4px;
}

@keyframes statPulse {
    0% { transform: scale(1); }
    40% { transform: scale(1.15); }
    100% { transform: scale(1); }
}

/* ═══ CANVAS CONTAINER ══════════════════════════════════════════════════════ */
.monster-canvas-container {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255,255,255,0.06);
    box-shadow: inset 0 0 60px rgba(0,0,0,0.3);
}

.monster-canvas-container canvas {
    display: block;
    width: 100%;
    border-radius: 20px;
}

.canvas-badge {
    position: absolute;
    top: 14px;
    right: 14px;
    background: rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--monster-accent);
    backdrop-filter: blur(10px);
    letter-spacing: 0.05em;
}

/* ═══ CONTROLS BAR ═══════════════════════════════════════════════════════════ */
.monster-controls {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
    padding: 16px 20px;
    background: rgba(0,0,0,0.2);
    border-radius: 16px;
    border: 1px solid rgba(255,255,255,0.06);
}

.monster-controls input[type="number"] {
    width: 72px;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(255,255,255,0.05);
    color: white;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    text-align: center;
    transition: all 0.2s;
}

.monster-controls input[type="number"]:focus {
    outline: none;
    border-color: var(--monster-primary);
    box-shadow: 0 0 0 3px rgba(139,92,246,0.2);
}

.monster-controls input[type="range"] {
    -webkit-appearance: none;
    height: 6px;
    border-radius: 3px;
    background: rgba(255,255,255,0.1);
    outline: none;
    cursor: pointer;
    width: 90px;
    border: none;
    padding: 0;
}

.monster-controls input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--monster-primary);
    cursor: pointer;
    box-shadow: 0 0 8px rgba(139,92,246,0.5);
}

.divider-v {
    width: 1px;
    height: 30px;
    background: rgba(255,255,255,0.1);
    margin: 0 4px;
}

/* ═══ MODE TOGGLE ════════════════════════════════════════════════════════════ */
.mode-tabs {
    display: flex;
    background: rgba(0,0,0,0.3);
    border-radius: 14px;
    padding: 4px;
    border: 1px solid rgba(255,255,255,0.08);
    gap: 4px;
    margin-bottom: 20px;
}

.mode-tab {
    flex: 1;
    padding: 10px 18px;
    border: none;
    background: transparent;
    border-radius: 10px;
    color: var(--text-muted, #888);
    font-weight: 700;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.03em;
}

.mode-tab.active {
    background: linear-gradient(135deg, var(--monster-primary), var(--monster-accent));
    color: white;
    box-shadow: var(--monster-glow-primary);
}

.mode-tab:hover:not(.active) {
    background: rgba(255,255,255,0.08);
    color: white;
}

/* ═══ GAME MODE PANEL ════════════════════════════════════════════════════════ */
.game-panel {
    background: linear-gradient(135deg, rgba(139,92,246,0.12), rgba(6,182,212,0.08));
    border: 1px solid rgba(139,92,246,0.3);
    border-radius: 20px;
    padding: 20px;
    position: relative;
    overflow: hidden;
}

.game-panel::before {
    content: '⚡';
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 2rem;
    opacity: 0.2;
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.game-title {
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--monster-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.score-display {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--monster-gold);
    text-shadow: var(--monster-glow-gold);
}

.game-prompt {
    font-size: 0.9rem;
    color: var(--text, #ddd);
    line-height: 1.5;
    margin-bottom: 14px;
    min-height: 40px;
}

.timer-bar {
    height: 6px;
    border-radius: 3px;
    background: rgba(255,255,255,0.1);
    overflow: hidden;
    margin-bottom: 14px;
}

.timer-fill {
    height: 100%;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--monster-success), var(--monster-gold), var(--monster-danger));
    transition: width 0.1s linear;
}

.lives-display {
    display: flex;
    gap: 6px;
    font-size: 1.1rem;
}

.challenge-btn-monster {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--monster-primary), var(--monster-accent));
    color: white;
    font-weight: 800;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.challenge-btn-monster:hover {
    transform: translateY(-2px);
    box-shadow: var(--monster-glow-primary);
}

.challenge-btn-monster.active {
    background: linear-gradient(135deg, var(--monster-danger), hsl(20,85%,55%));
    animation: challengePulse 2s infinite;
}

@keyframes challengePulse {
    0%, 100% { box-shadow: 0 0 15px rgba(239,68,68,0.3); }
    50% { box-shadow: 0 0 35px rgba(239,68,68,0.7); }
}

/* ═══ LOG PANEL ══════════════════════════════════════════════════════════════ */
.log-panel {
    background: var(--glass-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 16px;
    padding: 16px 18px;
}

.log-panel h4 {
    font-size: 0.8rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--monster-accent);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.log-text {
    font-size: 0.85rem;
    color: var(--text, #ccc);
    line-height: 1.6;
    min-height: 48px;
    font-family: 'JetBrains Mono', monospace;
    transition: all 0.3s;
}

.log-text.flash {
    animation: logFlash 0.4s ease;
}

@keyframes logFlash {
    0% { color: var(--monster-accent); }
    100% { color: var(--text, #ccc); }
}

/* ═══ INFO CARDS ═════════════════════════════════════════════════════════════ */
.info-card {
    background: var(--glass-card);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 16px;
    padding: 16px 18px;
}

.info-card h4 {
    font-size: 0.78rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted, #888);
    margin-bottom: 10px;
}

.complexity-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    font-size: 0.82rem;
}

.complexity-row:last-child { border-bottom: none; }

.complexity-row .op { color: var(--text-muted, #888); }

.complexity-badge {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    font-weight: 700;
    padding: 2px 10px;
    border-radius: 20px;
}

.complexity-badge.optimal { background: rgba(34,197,94,0.15); color: var(--monster-success); }
.complexity-badge.good    { background: rgba(250,204,21,0.15); color: var(--monster-gold); }
.complexity-badge.bad     { background: rgba(239,68,68,0.15);  color: var(--monster-danger); }

/* ═══ MONSTER HEADER ═════════════════════════════════════════════════════════ */
.monster-header {
    margin-top: 40px;
    position: relative;
    padding-left: 20px;
}

.monster-header::before {
    content: '';
    position: absolute;
    left: 0; top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 70%;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--monster-primary), var(--monster-accent));
}

.category-badge {
    font-size: 0.75rem;
    padding: 4px 14px;
    border-radius: 20px;
    background: rgba(139,92,246,0.15);
    border: 1px solid rgba(139,92,246,0.3);
    color: var(--monster-primary);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    display: inline-block;
    margin-bottom: 12px;
}

.monster-header h1 {
    font-size: 2.2rem;
    font-weight: 900;
    background: linear-gradient(135deg, white 0%, var(--monster-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.monster-header p {
    color: var(--text-muted, #888);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ═══ POWER SWITCH ═══════════════════════════════════════════════════════════ */
.power-switch {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
}

.power-switch input { display: none; }

.power-switch .track {
    width: 44px;
    height: 22px;
    background: rgba(255,255,255,0.1);
    border-radius: 11px;
    position: relative;
    transition: background 0.3s;
    border: 1px solid rgba(255,255,255,0.1);
}

.power-switch input:checked + .track {
    background: var(--monster-primary);
    box-shadow: 0 0 12px rgba(139,92,246,0.5);
}

.power-switch .track::after {
    content: '';
    position: absolute;
    left: 2px; top: 2px;
    width: 16px; height: 16px;
    border-radius: 50%;
    background: white;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.power-switch input:checked + .track::after {
    transform: translateX(22px);
}

.power-label { color: var(--text-muted, #888); }
.power-label.active { color: var(--monster-primary); }

/* ═══ ANIMATIONS ══════════════════════════════════════════════════════════════ */
@keyframes bounceIn {
    0%   { transform: scale(0) translateY(-20px); opacity: 0; }
    60%  { transform: scale(1.1) translateY(5px); opacity: 1; }
    100% { transform: scale(1) translateY(0); opacity: 1; }
}

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

@keyframes glow-pulse {
    0%, 100% { box-shadow: 0 0 10px rgba(139,92,246,0.3); }
    50%       { box-shadow: 0 0 30px rgba(139,92,246,0.7), 0 0 60px rgba(139,92,246,0.3); }
}

.glow-active {
    animation: glow-pulse 2s infinite !important;
}

/* ═══ RESPONSIVE ═════════════════════════════════════════════════════════════ */
@media (max-width: 1100px) {
    .monster-layout { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .monster-controls { justify-content: center; }
    .monster-header h1 { font-size: 1.7rem; }
}