/* ============================================================
   CUBROID STUDIO - MODERN, GLOWY, PROFESSIONAL UI (2026 STYLE)
   ============================================================ */

   body {
    margin: 0;
    overflow: hidden;
    background: #0f1419;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #e0e0e0;
    user-select: none;
}

/* --- MAIN LAYOUT --- */
#cubroid-app-wrapper {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

#canvas-container {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    background: radial-gradient(circle at 50% 50%, #1a2330 0%, #0d1117 100%);
}

#ui-layer {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 10;
}

/* --- HEADER --- */
#header {
    pointer-events: auto;
    padding: 16px 24px;
    background: linear-gradient(180deg, rgba(13,17,23,0.95) 0%, rgba(13,17,23,0.7) 70%, transparent 100%);
    backdrop-filter: blur(12px);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.app-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: #00e5ff;
    text-shadow: 0 0 15px rgba(0,229,255,0.6);
    letter-spacing: 1.5px;
}

.app-subtitle {
    font-size: 0.85rem;
    color: #88b3ff;
    margin-top: 4px;
    opacity: 0.9;
}

/* Buttons chung */
.btn-group {
    display: flex;
    gap: 10px;
    background: rgba(20,25,35,0.6);
    padding: 8px;
    border-radius: 12px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(0,229,255,0.2);
}

.btn {
    padding: 10px 18px;
    background: transparent;
    border: none;
    border-radius: 10px;
    color: #ccc;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn:hover {
    color: #fff;
    background: rgba(0,229,255,0.15);
    box-shadow: 0 0 15px rgba(0,229,255,0.3);
}

.btn.active {
    background: linear-gradient(135deg, #00e5ff, #00b4d8);
    color: #000;
    font-weight: 700;
    box-shadow: 0 0 20px rgba(0,229,255,0.6);
}

.btn-save { color: #ffd60a; }
.btn-delete { color: #ff5252; }

/* --- PALETTE BÊN TRÁI (KHO LINH KIỆN) --- */
#palette {
    pointer-events: auto;
    position: absolute;
    left: 20px;
    top: 90px;
    bottom: 80px;
    width: 360px;
    background: rgba(15,20,30,0.92);
    border-radius: 16px;
    padding: 20px;
    overflow-y: auto;
    overflow-x: hidden;
    backdrop-filter: blur(16px);
    border: 1px solid rgba(0,229,255,0.15);
    box-shadow: 
        0 10px 30px rgba(0,0,0,0.5),
        inset 0 0 20px rgba(0,229,255,0.05);
    transition: all 0.4s ease;
}

#palette::-webkit-scrollbar {
    width: 8px;
}
#palette::-webkit-scrollbar-track {
    background: rgba(0,0,0,0.3);
    border-radius: 10px;
}
#palette::-webkit-scrollbar-thumb {
    background: rgba(0,229,255,0.4);
    border-radius: 10px;
}

.category-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: #00e5ff;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin: 25px 0 12px 0;
    padding-bottom: 8px;
    border-bottom: 2px solid rgba(0,229,255,0.4);
    text-shadow: 0 0 8px rgba(0,229,255,0.3);
}

/* Grid 2 cột đẹp */
.part-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.part-btn {
    position: relative;
    background: rgba(25,35,50,0.6);
    border: 1px solid rgba(100,150,255,0.2);
    border-radius: 14px;
    padding: 14px 10px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    overflow: hidden;
}

.part-btn::before {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0,229,255,0.1), transparent);
    transition: left 0.6s;
}

.part-btn:hover::before {
    left: 100%;
}

.part-btn:hover {
    transform: translateY(-8px) scale(1.03);
    background: rgba(0,229,255,0.12);
    border-color: #00e5ff;
    box-shadow: 
        0 10px 25px rgba(0,229,255,0.25),
        0 0 20px rgba(0,229,255,0.15);
}

.part-btn.selected {
    border-color: #00e5ff;
    background: rgba(0,229,255,0.2);
    box-shadow: 0 0 25px rgba(0,229,255,0.5);
    transform: scale(1.05);
}

.part-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    filter: grayscale(80%);
}

.part-thumb {
    width: 190px;
    height: 190px;
    background: #222 no-repeat center/cover;
    border-radius: 14px;
    margin-bottom: 10px;
    border: 2px solid rgba(255,255,255,0.15);
    box-shadow: 0 5px 15px rgba(0,0,0,0.4);
    transition: all 0.3s;
}

.part-btn:hover .part-thumb {
    transform: scale(1.1);
    border-color: #00e5ff;
    box-shadow: 0 0 20px rgba(0,229,255,0.4);
}

.part-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: #e0f2ff;
    text-shadow: 0 1px 3px rgba(0,0,0,0.6);
}

.qty-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    min-width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #ff5252, #f50057);
    color: white;
    font-weight: bold;
    font-size: 0.9rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 8px;
    box-shadow: 0 4px 12px rgba(255,82,82,0.6);
    border: 2px solid #fff;
}

.qty-badge.full {
    background: linear-gradient(135deg, #4caf50, #66bb6a);
    box-shadow: 0 4px 12px rgba(76,175,80,0.6);
}

/* --- TOAST --- */
#toast {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0,0,0,0.85);
    color: #fff;
    padding: 14px 30px;
    border-radius: 30px;
    font-size: 1rem;
    font-weight: 500;
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s ease;
    z-index: 10000;
    backdrop-filter: blur(12px);
    border: 1px solid rgba(0,229,255,0.3);
    box-shadow: 0 10px 30px rgba(0,0,0,0.6);
    text-shadow: 0 1px 3px rgba(0,0,0,0.8);
}

#toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(-10px);
}

/* --- CONTROLS (DPAD) --- */
#controls-area {
    pointer-events: auto;
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: none;
}

.dpad {
    display: grid;
    grid-template-columns: 60px 60px 60px;
    gap: 12px;
}

.dbtn {
    width: 60px;
    height: 60px;
    background: rgba(255,255,255,0.1);
    border: 2px solid rgba(0,229,255,0.3);
    border-radius: 16px;
    color: #00e5ff;
    font-size: 28px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    transition: all 0.2s;
    box-shadow: 0 5px 15px rgba(0,0,0,0.4);
}

.dbtn:hover {
    background: rgba(0,229,255,0.2);
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,229,255,0.4);
}

.dbtn:active {
    background: #00e5ff;
    color: #000;
    transform: translateY(0) scale(0.95);
}

/* FIX PALETTE ẨN/HIỆN MƯỢT */
#palette.hidden {
    opacity: 0;
    transform: translateX(-100px);
    pointer-events: none;
}

/* PANEL BÊN PHẢI */
#selected-block-panel {
    position: absolute;
    top: 100px;
    right: 20px;
    width: 340px;
    background: rgba(15, 25, 40, 0.95);
    border: 2px solid #00e5ff;
    border-radius: 18px;
    padding: 24px;
    box-shadow: 0 0 40px rgba(0, 229, 255, 0.5);
    backdrop-filter: blur(15px);
    z-index: 1000;
    transition: opacity 0.4s ease, transform 0.4s ease;
    color: white;
}

#selected-block-panel.hidden {
    opacity: 0;
    transform: translateX(400px);
    pointer-events: none;
    visibility: hidden;
}

#selected-block-panel .panel-title {
    font-size: 1.4rem;
    color: #00e5ff;
    text-align: center;
    margin-bottom: 20px;
    text-shadow: 0 0 15px rgba(0,229,255,0.8);
}

#selected-block-panel .section-title {
    color: #FFC107;
    font-size: 1.1rem;
    margin: 20px 0 12px 0;
    font-weight: 600;
}

#selected-block-panel .rotate-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

#selected-block-panel .rotate-selected-btn {
    background: linear-gradient(135deg, #ffb300, #ff8c00);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 12px;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(255, 179, 0, 0.4);
    transition: all 0.3s;
}

#selected-block-panel .rotate-selected-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(255, 179, 0, 0.6);
}

#selected-block-panel #reset-selected-rotation {
    width: 100%;
    background: rgba(100, 100, 100, 0.6);
    color: #ddd;
    border: none;
    padding: 14px;
    border-radius: 12px;
    font-weight: bold;
    cursor: pointer;
    margin-top: 8px;
    transition: all 0.3s;
}

#selected-block-panel #reset-selected-rotation:hover {
    background: rgba(120, 120, 120, 0.8);
    transform: translateY(-2px);
}

#selected-block-panel #color-options {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    margin: 20px 0;
}

#selected-block-panel .color-swatch {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 4px solid #444;
    cursor: pointer;
    box-shadow: 0 6px 15px rgba(0,0,0,0.6);
    transition: all 0.3s ease;
}

#selected-block-panel .color-swatch:hover {
    transform: scale(1.2);
    border-color: #00e5ff;
    box-shadow: 0 0 25px rgba(0,229,255,0.6);
}

#selected-block-panel .color-swatch.active {
    border-color: #00e5ff;
    box-shadow: 0 0 30px rgba(0,229,255,0.9);
    transform: scale(1.15);
}

#selected-block-panel #delete-selected-block {
    width: 100%;
    background: linear-gradient(135deg, #ff1744, #f50057);
    color: white;
    border: none;
    padding: 18px;
    border-radius: 14px;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 0 30px rgba(255, 23, 68, 0.7);
    transition: all 0.3s;
}

#selected-block-panel #delete-selected-block:hover {
    transform: translateY(-4px);
    box-shadow: 0 0 40px rgba(255, 23, 68, 0.9);
}

#selected-block-panel #close-selected-panel {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(0,0,0,0.5);
    border: none;
    color: white;
    font-size: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

#selected-block-panel #close-selected-panel:hover {
    background: rgba(255, 0, 0, 0.6);
    transform: scale(1.1);
}

/* CỘT PHẢI - TOOLS BAR */
#right-tools-bar button {
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#right-tools-bar button:hover {
    transform: translateY(-8px) scale(1.15);
    box-shadow: 0 15px 40px rgba(0,229,255,0.7) !important;
}

#right-tools-bar button:active {
    transform: translateY(-4px) scale(1.1);
}

#quick-delete-btn.active {
    background: linear-gradient(135deg, #ff1744, #f50057) !important;
    color: white !important;
    border-color: #ff1744 !important;
    box-shadow: 0 0 60px rgba(255,23,68,1) !important;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 60px rgba(255,23,68,1); }
    50% { box-shadow: 0 0 80px rgba(255,23,68,1); }
}

#right-tools-bar.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-50%) translateX(80px);
}