/* ===================================
   TERMINAL THEME - CORE STYLES
   =================================== */

:root {
    /* Terminal Color Palette */
    --terminal-bg: #0a0e14;
    --terminal-bg-alt: #14191f;
    --terminal-border: #1f2933;
    --terminal-text: #00ff41;
    --terminal-text-dim: #00cc33;
    --terminal-text-bright: #00ff88;
    --terminal-error: #ff3366;
    --terminal-warning: #ffaa00;
    --terminal-info: #00aaff;
    --terminal-success: #00ff41;
    
    /* Accent Colors */
    --accent-primary: #00ff41;
    --accent-secondary: #00aaff;
    --accent-warning: #ffaa00;
    --accent-danger: #ff3366;
    
    /* Shadows & Effects */
    --glow-green: 0 0 10px rgba(0, 255, 65, 0.3);
    --glow-blue: 0 0 10px rgba(0, 170, 255, 0.3);
    --glow-red: 0 0 10px rgba(255, 51, 102, 0.3);
    
    /* Typography */
    --font-mono: 'Fira Code', 'Courier New', monospace;
    --font-retro: 'VT323', monospace;
}

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

body {
    font-family: var(--font-mono);
    background: #000;
    color: var(--terminal-text);
    overflow-x: hidden;
    line-height: 1.6;
}

/* ===================================
   TERMINAL CONTAINER
   =================================== */

.terminal-container {
    max-width: 1400px;
    margin: 20px auto;
    background: var(--terminal-bg);
    border: 2px solid var(--terminal-border);
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0, 255, 65, 0.1),
                inset 0 1px 0 rgba(0, 255, 65, 0.1);
    overflow: hidden;
    animation: terminalBoot 0.5s ease;
}

@keyframes terminalBoot {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ===================================
   TERMINAL HEADER
   =================================== */

.terminal-header {
    background: var(--terminal-bg-alt);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--terminal-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.terminal-buttons {
    display: flex;
    gap: 8px;
}

.terminal-button {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.terminal-button.close {
    background: var(--accent-danger);
    box-shadow: 0 0 5px rgba(255, 51, 102, 0.5);
}

.terminal-button.minimize {
    background: var(--accent-warning);
    box-shadow: 0 0 5px rgba(255, 170, 0, 0.5);
}

.terminal-button.maximize {
    background: var(--accent-primary);
    box-shadow: 0 0 5px rgba(0, 255, 65, 0.5);
}

.terminal-title {
    flex: 1;
    text-align: center;
    font-size: 14px;
    color: var(--terminal-text-dim);
    font-weight: 500;
}

.terminal-actions {
    display: flex;
    gap: 10px;
}

/* ===================================
   BUTTONS
   =================================== */

.terminal-btn, .btn {
    background: transparent;
    border: 1px solid var(--accent-primary);
    color: var(--accent-primary);
    padding: 6px 16px;
    font-family: var(--font-mono);
    font-size: 13px;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.terminal-btn:hover, .btn:hover {
    background: var(--accent-primary);
    color: var(--terminal-bg);
    box-shadow: var(--glow-green);
    transform: translateY(-2px);
}

.btn-primary {
    border-color: var(--accent-secondary);
    color: var(--accent-secondary);
}

.btn-primary:hover {
    background: var(--accent-secondary);
    box-shadow: var(--glow-blue);
}

.btn-danger {
    border-color: var(--accent-danger);
    color: var(--accent-danger);
}

.btn-danger:hover {
    background: var(--accent-danger);
    box-shadow: var(--glow-red);
}

/* ===================================
   TERMINAL BODY
   =================================== */

.terminal-body {
    min-height: calc(100vh - 120px);
    padding: 30px;
    background: var(--terminal-bg);
}

.terminal-output {
    font-size: 14px;
}

/* ===================================
   BOOT SEQUENCE
   =================================== */

.boot-sequence {
    animation: fadeIn 0.5s ease;
}

.boot-line {
    margin: 8px 0;
    animation: typewriter 0.3s steps(44) forwards;
    overflow: hidden;
    white-space: nowrap;
}

.boot-line.prompt {
    animation: none;
}

@keyframes typewriter {
    from {
        width: 0;
    }
    to {
        width: 100%;
    }
}

.success {
    color: var(--terminal-success);
    font-weight: bold;
}

.error {
    color: var(--terminal-error);
    font-weight: bold;
}

/* ===================================
   BLINK ANIMATION
   =================================== */

.blink {
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 50% {
        opacity: 1;
    }
    50.01%, 100% {
        opacity: 0;
    }
}

/* ===================================
   MAIN MENU
   =================================== */

.main-menu {
    animation: fadeIn 0.5s ease;
}

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

.ascii-art {
    color: var(--terminal-text-bright);
    margin-bottom: 40px;
    text-align: center;
    font-size: 12px;
    line-height: 1.2;
    opacity: 0.8;
}

.ascii-art pre {
    display: inline-block;
    text-align: left;
}

.section-title {
    color: var(--terminal-text-bright);
    font-size: 20px;
    margin-bottom: 30px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--terminal-border);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ===================================
   MENU GRID
   =================================== */

.menu-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.menu-card {
    background: var(--terminal-bg-alt);
    border: 1px solid var(--terminal-border);
    border-radius: 6px;
    padding: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.menu-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-primary), transparent);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.menu-card:hover::before {
    transform: translateX(0);
}

.menu-card:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--glow-green);
    transform: translateY(-5px);
}

.menu-card.highlight {
    border-color: var(--accent-secondary);
}

.menu-card.highlight::before {
    background: linear-gradient(90deg, var(--accent-secondary), transparent);
}

.menu-card.highlight:hover {
    border-color: var(--accent-secondary);
    box-shadow: var(--glow-blue);
}

.menu-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.menu-card h3 {
    color: var(--terminal-text-bright);
    font-size: 18px;
    margin-bottom: 10px;
}

.menu-card p {
    color: var(--terminal-text-dim);
    font-size: 14px;
    margin-bottom: 16px;
}

.menu-stats {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.stat, .stat-highlight {
    font-size: 11px;
    padding: 4px 10px;
    border-radius: 3px;
    background: rgba(0, 255, 65, 0.1);
    border: 1px solid rgba(0, 255, 65, 0.3);
    color: var(--accent-primary);
}

.stat-highlight {
    background: rgba(0, 170, 255, 0.1);
    border-color: rgba(0, 170, 255, 0.3);
    color: var(--accent-secondary);
}

/* ===================================
   TERMINAL INFO
   =================================== */

.terminal-info {
    margin-top: 40px;
    padding: 20px;
    background: rgba(0, 255, 65, 0.02);
    border: 1px dashed var(--terminal-border);
    border-radius: 4px;
}

.info-line {
    margin: 5px 0;
    font-size: 13px;
    color: var(--terminal-text-dim);
}

.prompt {
    color: var(--accent-primary);
    font-weight: bold;
    margin-right: 8px;
}

/* ===================================
   TERMINAL FOOTER
   =================================== */

.terminal-footer {
    background: var(--terminal-bg-alt);
    border-top: 1px solid var(--terminal-border);
    padding: 10px 20px;
}

.status-bar {
    display: flex;
    justify-content: space-between;
    font-size: 12px;
    color: var(--terminal-text-dim);
}

.status-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #666;
}

.status-dot.active {
    background: var(--accent-primary);
    box-shadow: 0 0 8px var(--accent-primary);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* ===================================
   PROBLEM LIST STYLES
   =================================== */

.folder-tree {
    margin: 20px 0;
}

.folder-item {
    margin: 10px 0;
}

.folder-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--terminal-bg-alt);
    border: 1px solid var(--terminal-border);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.folder-header:hover {
    border-color: var(--accent-primary);
    background: rgba(0, 255, 65, 0.05);
}

.folder-icon {
    font-size: 20px;
}

.folder-name {
    flex: 1;
    font-size: 16px;
    font-weight: 500;
}

.folder-count {
    font-size: 12px;
    color: var(--terminal-text-dim);
}

.problem-list {
    margin-left: 30px;
    margin-top: 10px;
    display: none;
}

.problem-list.expanded {
    display: block;
}

.problem-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    margin: 5px 0;
    background: rgba(0, 255, 65, 0.02);
    border-left: 2px solid var(--terminal-border);
    cursor: pointer;
    transition: all 0.3s ease;
}

.problem-item:hover {
    border-left-color: var(--accent-primary);
    background: rgba(0, 255, 65, 0.05);
    transform: translateX(5px);
}

.problem-difficulty {
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 11px;
    font-weight: bold;
}

.difficulty-easy {
    background: rgba(0, 255, 65, 0.2);
    color: var(--terminal-success);
}

.difficulty-medium {
    background: rgba(255, 170, 0, 0.2);
    color: var(--accent-warning);
}

.difficulty-hard {
    background: rgba(255, 51, 102, 0.2);
    color: var(--accent-danger);
}

/* ===================================
   CODE EDITOR STYLES
   =================================== */

.editor-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 20px 0;
}

.editor-panel {
    background: var(--terminal-bg-alt);
    border: 1px solid var(--terminal-border);
    border-radius: 6px;
    overflow: hidden;
}

.panel-header {
    padding: 12px 16px;
    background: rgba(0, 255, 65, 0.05);
    border-bottom: 1px solid var(--terminal-border);
    font-size: 14px;
    font-weight: 500;
}

.panel-content {
    padding: 16px;
    max-height: 500px;
    overflow-y: auto;
}

.code-editor {
    width: 100%;
    min-height: 400px;
    background: var(--terminal-bg);
    color: var(--terminal-text);
    font-family: var(--font-mono);
    font-size: 14px;
    border: none;
    padding: 16px;
    resize: vertical;
    outline: none;
}

.code-editor:focus {
    box-shadow: inset 0 0 0 1px var(--accent-primary);
}

/* ===================================
   TEST CASES
   =================================== */

.test-case {
    padding: 12px;
    margin: 10px 0;
    background: var(--terminal-bg);
    border-left: 3px solid var(--terminal-border);
    border-radius: 4px;
    font-size: 13px;
}

.test-case.passed {
    border-left-color: var(--terminal-success);
    background: rgba(0, 255, 65, 0.05);
}

.test-case.failed {
    border-left-color: var(--terminal-error);
    background: rgba(255, 51, 102, 0.05);
}

.test-label {
    font-weight: bold;
    margin-bottom: 5px;
}

.test-result {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px dashed var(--terminal-border);
}

/* ===================================
   BATTLE STYLES
   =================================== */

.battle-arena {
    padding: 40px;
    text-align: center;
}

.battle-stage {
    display: flex;
    justify-content: space-around;
    align-items: center;
    margin: 40px 0;
}

.battle-player {
    flex: 1;
    padding: 30px;
}

.player-sprite {
    width: 200px;
    height: 200px;
    margin: 0 auto 20px;
    position: relative;
}

.sprite-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 0 20px var(--accent-primary));
}

.player-name {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
}

.player-stats {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 20px;
}

.stat-bar {
    background: var(--terminal-bg-alt);
    border: 1px solid var(--terminal-border);
    border-radius: 4px;
    padding: 8px 12px;
    text-align: left;
}

.stat-name {
    font-size: 12px;
    color: var(--terminal-text-dim);
    margin-bottom: 5px;
}

.stat-value {
    font-size: 16px;
    font-weight: bold;
    color: var(--accent-primary);
}

.battle-vs {
    font-size: 48px;
    font-weight: bold;
    color: var(--accent-warning);
    text-shadow: 0 0 20px var(--accent-warning);
    animation: pulse 1s infinite;
}

.battle-log {
    margin-top: 40px;
    padding: 20px;
    background: var(--terminal-bg-alt);
    border: 1px solid var(--terminal-border);
    border-radius: 6px;
    max-height: 300px;
    overflow-y: auto;
    text-align: left;
}

.battle-message {
    padding: 8px 0;
    border-bottom: 1px dashed rgba(0, 255, 65, 0.1);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===================================
   HEALTH BAR
   =================================== */

.health-bar-container {
    margin: 15px 0;
}

.health-bar {
    width: 100%;
    height: 20px;
    background: var(--terminal-bg);
    border: 1px solid var(--terminal-border);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
}

.health-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--terminal-success), var(--terminal-text-bright));
    transition: width 0.5s ease;
    box-shadow: 0 0 10px var(--terminal-success);
}

.health-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 11px;
    font-weight: bold;
    color: #fff;
    text-shadow: 0 0 3px #000;
}

/* ===================================
   PROFILE STYLES
   =================================== */

.profile-container {
    max-width: 900px;
    margin: 0 auto;
}

.profile-header {
    display: flex;
    align-items: center;
    gap: 30px;
    padding: 30px;
    background: var(--terminal-bg-alt);
    border: 1px solid var(--terminal-border);
    border-radius: 6px;
    margin-bottom: 30px;
}

.profile-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 3px solid var(--accent-primary);
    box-shadow: var(--glow-green);
    font-size: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--terminal-bg);
}

.profile-info h1 {
    font-size: 32px;
    margin-bottom: 10px;
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--terminal-bg-alt);
    border: 1px solid var(--terminal-border);
    border-radius: 6px;
    padding: 20px;
    text-align: center;
}

.stat-card h3 {
    font-size: 14px;
    color: var(--terminal-text-dim);
    margin-bottom: 10px;
}

.stat-card .value {
    font-size: 32px;
    font-weight: bold;
    color: var(--accent-primary);
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 768px) {
    .terminal-container {
        margin: 0;
        border-radius: 0;
    }

    .menu-grid {
        grid-template-columns: 1fr;
    }

    .editor-container {
        grid-template-columns: 1fr;
    }

    .battle-stage {
        flex-direction: column;
        gap: 40px;
    }

    .status-bar {
        flex-direction: column;
        gap: 10px;
    }
}

/* ===================================
   SCROLLBAR
   =================================== */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--terminal-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--terminal-border);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
    box-shadow: var(--glow-green);
}

/* ===================================
   ANIMATIONS
   =================================== */

@keyframes glitch {
    0% {
        transform: translate(0);
    }
    20% {
        transform: translate(-2px, 2px);
    }
    40% {
        transform: translate(-2px, -2px);
    }
    60% {
        transform: translate(2px, 2px);
    }
    80% {
        transform: translate(2px, -2px);
    }
    100% {
        transform: translate(0);
    }
}

.glitch {
    animation: glitch 0.3s ease;
}

/* ===================================
   UTILITY CLASSES
   =================================== */

.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.hidden {
    display: none;
}