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

:root {
    --bg-dark: #0a0a0f;
    --bg-gradient: linear-gradient(135deg, #0a0a0f 0%, #1a1a2e 50%, #0f0f1a 100%);
    --accent-coral: #ff6b6b;
    --accent-mint: #4ecdc4;
    --accent-gold: #ffd93d;
    --accent-lavender: #a29bfe;
    --text-light: #f8f8f2;
    --text-dim: #6c6c80;
}

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg-dark);
    min-height: 100vh;
    overflow: hidden;
    color: var(--text-light);
}

.game-container {
    width: 100vw;
    height: 100vh;
    position: relative;
}

/* ========== TITLE SCREEN ========== */
.title-screen {
    position: absolute;
    inset: 0;
    background: var(--bg-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.title-screen.hidden {
    opacity: 0;
    transform: scale(1.1);
    pointer-events: none;
}

.title-content {
    text-align: center;
    z-index: 10;
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-bottom: 16px;
}

.cube-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent-coral) 0%, var(--accent-gold) 100%);
    border-radius: 16px;
    position: relative;
    transform: rotate(-10deg);
    box-shadow: 
        0 20px 60px rgba(255, 107, 107, 0.4),
        inset 0 -4px 0 rgba(0,0,0,0.2),
        inset 4px 0 0 rgba(255,255,255,0.2);
    animation: cubeFloat 3s ease-in-out infinite;
}

.cube-icon::before {
    content: '';
    position: absolute;
    top: 12px;
    left: 12px;
    width: 20px;
    height: 20px;
    background: rgba(255,255,255,0.4);
    border-radius: 4px;
}

.cube-icon::after {
    content: '';
    position: absolute;
    bottom: 16px;
    right: 16px;
    width: 32px;
    height: 8px;
    background: rgba(0,0,0,0.2);
    border-radius: 2px;
}

@keyframes cubeFloat {
    0%, 100% { transform: rotate(-10deg) translateY(0); }
    50% { transform: rotate(-10deg) translateY(-10px); }
}

.logo h1 {
    font-family: 'Rubik Mono One', monospace;
    font-size: 64px;
    line-height: 0.9;
    text-align: left;
    background: linear-gradient(135deg, var(--text-light) 0%, var(--accent-mint) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: none;
    letter-spacing: -2px;
}

.tagline {
    font-size: 18px;
    color: var(--text-dim);
    letter-spacing: 8px;
    text-transform: uppercase;
    margin-bottom: 48px;
}

.start-btn {
    position: relative;
    padding: 20px 60px;
    font-family: 'Outfit', sans-serif;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--bg-dark);
    background: linear-gradient(135deg, var(--accent-mint) 0%, var(--accent-lavender) 100%);
    border: none;
    border-radius: 60px;
    cursor: pointer;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 10px 40px rgba(78, 205, 196, 0.4);
}

.start-btn:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 20px 60px rgba(78, 205, 196, 0.5);
}

.start-btn:active {
    transform: translateY(0) scale(0.98);
}

.btn-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: shine 3s infinite;
}

@keyframes shine {
    0%, 70%, 100% { left: -100%; }
    85% { left: 100%; }
}

.controls-hint {
    margin-top: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: var(--text-dim);
    font-size: 14px;
}

.key {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 14px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    font-family: 'Rubik Mono One', monospace;
    font-size: 11px;
    margin: 0 8px;
}

/* Floating background blocks */
.floating-blocks {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.floating-blocks::before,
.floating-blocks::after {
    content: '';
    position: absolute;
    border-radius: 12px;
    opacity: 0.1;
}

.floating-blocks::before {
    width: 120px;
    height: 120px;
    background: var(--accent-coral);
    top: 15%;
    left: 10%;
    animation: float1 8s ease-in-out infinite;
}

.floating-blocks::after {
    width: 80px;
    height: 80px;
    background: var(--accent-mint);
    bottom: 20%;
    right: 15%;
    animation: float2 10s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(10deg); }
    66% { transform: translate(-20px, 20px) rotate(-5deg); }
}

@keyframes float2 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-40px, -20px) rotate(-15deg); }
}

/* ========== GAME SCREEN ========== */
.game-screen {
    position: absolute;
    inset: 0;
    background: var(--bg-gradient);
    display: none;
    flex-direction: column;
}

.game-screen.active {
    display: flex;
}

.game-hud {
    display: flex;
    justify-content: space-between;
    padding: 20px 40px;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.hud-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.hud-label {
    font-size: 10px;
    letter-spacing: 3px;
    color: var(--text-dim);
}

.hud-value {
    font-family: 'Rubik Mono One', monospace;
    font-size: 24px;
    color: var(--accent-gold);
}

#gameCanvas {
    flex: 1;
    width: 100%;
    display: block;
}

/* Level Complete Overlay */
.level-complete,
.game-over {
    position: absolute;
    inset: 0;
    background: rgba(10, 10, 15, 0.95);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    z-index: 50;
    animation: fadeIn 0.3s ease;
}

.level-complete.show,
.game-over.show {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.level-complete h2,
.game-over h2 {
    font-family: 'Rubik Mono One', monospace;
    font-size: 48px;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-coral) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.game-over h2 {
    background: linear-gradient(135deg, var(--accent-coral) 0%, var(--accent-lavender) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.next-btn,
.retry-btn {
    padding: 16px 48px;
    font-family: 'Outfit', sans-serif;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--bg-dark);
    background: var(--accent-mint);
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: transform 0.2s ease;
}

.retry-btn {
    background: var(--accent-coral);
}

.next-btn:hover,
.retry-btn:hover {
    transform: scale(1.05);
}

/* ========== BLOCK EDITOR ========== */
.editor-btn {
    margin-top: 16px;
    padding: 14px 40px;
    font-family: 'Outfit', sans-serif;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--text-light);
    background: rgba(255,255,255,0.1);
    border: 2px solid rgba(255,255,255,0.2);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.editor-btn:hover {
    background: rgba(255,255,255,0.15);
    border-color: var(--accent-gold);
    transform: translateY(-2px);
}

.editor-screen {
    position: absolute;
    inset: 0;
    background: var(--bg-gradient);
    display: none;
    flex-direction: column;
    z-index: 100;
}

.editor-screen.active {
    display: flex;
}

.editor-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.editor-header h2 {
    font-family: 'Rubik Mono One', monospace;
    font-size: 20px;
    color: var(--accent-gold);
}

.back-btn {
    padding: 10px 20px;
    font-family: 'Outfit', sans-serif;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-light);
    background: rgba(255,255,255,0.1);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.back-btn:hover {
    background: rgba(255,255,255,0.2);
}

.editor-actions {
    display: flex;
    gap: 12px;
}

.action-btn {
    padding: 10px 20px;
    font-family: 'Outfit', sans-serif;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-light);
    background: rgba(255,255,255,0.1);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.action-btn:hover {
    background: rgba(255,255,255,0.2);
}

.action-btn.save-btn {
    background: var(--accent-mint);
    color: var(--bg-dark);
}

.action-btn.save-btn:hover {
    background: #5dddd3;
}

.action-btn.new-btn {
    background: var(--accent-lavender);
    color: var(--bg-dark);
}

.action-btn.new-btn:hover {
    background: #b8b0ff;
}

.editor-main {
    flex: 1;
    display: flex;
    padding: 24px;
    gap: 24px;
    overflow: hidden;
}

.editor-left {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.pixel-grid-container {
    background: rgba(0,0,0,0.3);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid rgba(255,255,255,0.1);
}

#pixelCanvas {
    display: block;
    border-radius: 8px;
    cursor: crosshair;
    image-rendering: pixelated;
    background: repeating-conic-gradient(#2a2a3a 0% 25%, #1a1a2a 0% 50%) 50% / 32px 32px;
}

.grid-size-info {
    text-align: center;
    margin-top: 12px;
    font-size: 12px;
    color: var(--text-dim);
    letter-spacing: 1px;
}

.tools-panel {
    background: rgba(0,0,0,0.3);
    border-radius: 16px;
    padding: 16px;
    border: 1px solid rgba(255,255,255,0.1);
}

.tools-panel h3,
.color-panel h3,
.block-settings h3,
.preview-panel h3,
.saved-blocks-panel h3 {
    font-size: 10px;
    letter-spacing: 3px;
    color: var(--text-dim);
    margin-bottom: 12px;
}

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

.tool-btn {
    width: 48px;
    height: 48px;
    font-size: 20px;
    background: rgba(255,255,255,0.05);
    border: 2px solid transparent;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tool-btn:hover {
    background: rgba(255,255,255,0.1);
}

.tool-btn.active {
    background: rgba(255, 217, 61, 0.2);
    border-color: var(--accent-gold);
}

.editor-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
    padding-right: 8px;
}

.color-panel,
.block-settings,
.preview-panel,
.saved-blocks-panel {
    background: rgba(0,0,0,0.3);
    border-radius: 16px;
    padding: 16px;
    border: 1px solid rgba(255,255,255,0.1);
}

.current-color {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.color-preview {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    border: 3px solid rgba(255,255,255,0.2);
    background: #ff6b6b;
}

#colorInput {
    width: 100px;
    height: 48px;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    background: transparent;
}

#colorInput::-webkit-color-swatch-wrapper {
    padding: 4px;
}

#colorInput::-webkit-color-swatch {
    border-radius: 8px;
    border: none;
}

.color-palette {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 6px;
}

.palette-color {
    aspect-ratio: 1;
    border-radius: 6px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.15s ease;
}

.palette-color:hover {
    transform: scale(1.15);
    z-index: 1;
}

.palette-color.selected {
    border-color: #fff;
    box-shadow: 0 0 12px rgba(255,255,255,0.5);
}

.setting-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.setting-row label {
    font-size: 13px;
    color: var(--text-dim);
    min-width: 90px;
}

.setting-row input,
.setting-row select {
    flex: 1;
    padding: 10px 14px;
    font-family: 'Outfit', sans-serif;
    font-size: 14px;
    color: var(--text-light);
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 8px;
    outline: none;
    transition: border-color 0.2s ease;
}

.setting-row input:focus,
.setting-row select:focus {
    border-color: var(--accent-mint);
}

.setting-row select {
    cursor: pointer;
}

.setting-row select option {
    background: var(--bg-dark);
    color: var(--text-light);
}

.setting-row .hint {
    font-size: 11px;
    color: var(--text-dim);
}

.preview-container {
    display: flex;
    gap: 16px;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}

.editing-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    background: rgba(255, 217, 61, 0.15);
    border: 1px solid rgba(255, 217, 61, 0.3);
    border-radius: 8px;
    margin-top: 8px;
}

.editing-indicator.new-block {
    background: rgba(78, 205, 196, 0.15);
    border-color: rgba(78, 205, 196, 0.3);
}

.editing-indicator.new-block .editing-dot {
    background: var(--accent-mint);
    box-shadow: 0 0 8px var(--accent-mint);
}

.editing-dot {
    width: 10px;
    height: 10px;
    background: var(--accent-gold);
    border-radius: 50%;
    animation: pulse 1.5s ease-in-out infinite;
    box-shadow: 0 0 8px var(--accent-gold);
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.9); }
}

.editing-text {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-light);
}

#previewCanvas,
#previewCanvasLarge {
    border-radius: 8px;
    image-rendering: pixelated;
    background: #1a1a2a;
    border: 2px solid rgba(255,255,255,0.1);
}

.saved-blocks {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
    gap: 10px;
    max-height: 200px;
    overflow-y: auto;
    padding: 4px;
}

.saved-block {
    position: relative;
    aspect-ratio: 1;
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s ease;
    background: rgba(0,0,0,0.3);
}

.saved-block:hover {
    border-color: var(--accent-mint);
    transform: scale(1.05);
}

.saved-block.selected {
    border-color: var(--accent-gold);
    box-shadow: 0 0 16px rgba(255, 217, 61, 0.4);
}

.saved-block canvas {
    width: 100%;
    height: 100%;
    image-rendering: pixelated;
}

.saved-block .block-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 4px;
    background: rgba(0,0,0,0.7);
    font-size: 9px;
    text-align: center;
    color: var(--text-light);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.saved-block .block-key {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 18px;
    height: 18px;
    background: var(--accent-gold);
    color: var(--bg-dark);
    font-size: 10px;
    font-weight: bold;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.saved-block .delete-btn {
    position: absolute;
    top: 4px;
    left: 4px;
    width: 18px;
    height: 18px;
    background: var(--accent-coral);
    color: #fff;
    font-size: 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.saved-block:hover .delete-btn {
    opacity: 1;
}

.block-count {
    font-weight: normal;
    color: var(--accent-mint);
}

.empty-state {
    text-align: center;
    padding: 24px;
    color: var(--text-dim);
    font-size: 13px;
}

/* Toast notification */
.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-mint);
    color: var(--bg-dark);
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: bold;
    z-index: 1000;
    animation: toastIn 0.3s ease;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

/* Mobile responsive */
@media (max-width: 768px) {
    .logo h1 {
        font-size: 40px;
    }
    
    .cube-icon {
        width: 60px;
        height: 60px;
    }
    
    .tagline {
        font-size: 12px;
        letter-spacing: 4px;
    }
    
    .start-btn {
        padding: 16px 40px;
        font-size: 14px;
    }
    
    .controls-hint {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .game-hud {
        padding: 12px 20px;
    }
    
    .hud-value {
        font-size: 18px;
    }
    
    .editor-main {
        flex-direction: column;
        overflow-y: auto;
    }
    
    .editor-left {
        align-items: center;
    }
    
    #pixelCanvas {
        width: 288px;
        height: 288px;
    }
    
    .pixel-grid-container {
        padding: 12px;
    }
}