/* ========== Header ========== */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
    z-index: 10;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 28px;
    color: var(--accent);
}

.header h1 {
    font-size: 16px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.export-size {
    display: flex;
    align-items: center;
    gap: 8px;
}

.export-size label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.export-size select {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 6px 10px;
    font-size: 13px;
    font-family: inherit;
    cursor: pointer;
    outline: none;
    transition: border-color var(--transition);
}

.export-size select:focus {
    border-color: var(--border-focus);
}

.icon-name-input {
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 13px;
    font-family: inherit;
    outline: none;
    width: 180px;
    transition: border-color var(--transition);
}

.icon-name-input:focus {
    border-color: var(--border-focus);
}

.icon-name-input::placeholder {
    color: var(--text-muted);
}

/* ========== Buttons ========== */
.btn-primary {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition);
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-primary:active {
    transform: scale(0.97);
}

.btn-primary .material-symbols-outlined {
    font-size: 18px;
}

.btn-secondary {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-secondary .material-symbols-outlined {
    font-size: 16px;
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
}

.btn-icon:hover {
    background: var(--bg-hover);
    color: var(--danger);
    border-color: var(--danger);
}

.btn-icon .material-symbols-outlined {
    font-size: 16px;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-sm .material-symbols-outlined {
    font-size: 16px;
}

/* ========== Main Layout ========== */
.main {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* ========== Canvas Section ========== */
.canvas-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px;
    gap: 16px;
    position: relative;
    background: var(--bg-primary);
    background-image:
        radial-gradient(circle at 1px 1px, rgba(255,255,255,0.03) 1px, transparent 0);
    background-size: 24px 24px;
}

.canvas-container {
    position: relative;
    border-radius: var(--radius-lg);
    box-shadow:
        0 0 0 1px var(--border),
        var(--shadow),
        0 0 80px rgba(99, 102, 241, 0.06);
    overflow: hidden;
    cursor: crosshair;
}

.canvas-container canvas {
    display: block;
    width: 288px;
    height: 288px;
    image-rendering: pixelated;
}

.drop-overlay {
    position: absolute;
    inset: 0;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.2);
    border: 2px dashed var(--accent);
    border-radius: var(--radius-lg);
    color: var(--accent);
    backdrop-filter: blur(4px);
    pointer-events: none;
    z-index: 5;
}

.drop-overlay.visible {
    display: flex;
}

.drop-overlay .material-symbols-outlined {
    font-size: 40px;
    margin-bottom: 8px;
}

.drop-overlay p {
    font-size: 14px;
    font-weight: 600;
}

.canvas-info {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-muted);
}

.dot {
    font-size: 8px;
}

.canvas-actions {
    display: flex;
    gap: 8px;
}