:root {
    --bd-bg: radial-gradient(circle at 15% 20%, #2e2ce0 0%, #0b0b1b 35%, #03030b 100%);
    --panel-bg: rgba(10, 11, 22, 0.95);
    --panel-backdrop: rgba(6, 7, 20, 0.7);
    --border-color: rgba(255, 255, 255, 0.12);
    --text-primary: #f5f5f5;
    --text-secondary: #cbd5f5;
    --accent-color: #fbbf24;
    --accent-hover: #fcd34d;
    --danger-color: #ff4444;
    --input-bg: rgba(255, 255, 255, 0.06);
    --card-bg: rgba(6, 7, 23, 0.8);
    --shadow-glow: 0 20px 45px rgba(251, 191, 36, 0.25);
}

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

body {
    font-family: 'Be Vietnam Pro', sans-serif;
    background: var(--bd-bg);
    color: var(--text-primary);
    min-height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: stretch;
    background-attachment: fixed;
    transition: background 0.6s ease;
}

.app-container {
    display: flex;
    height: 100vh;
    width: 100%;
    gap: 1rem;
    padding: 1rem;
    position: relative;
    z-index: 1;
}

/* Sidebar */
.sidebar {
    width: 320px;
    background: var(--panel-backdrop);
    background-image: radial-gradient(circle at 20% -20%, rgba(251, 191, 36, 0.15), transparent 45%);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    overflow-y: auto;
    flex-shrink: 0;
    box-shadow: inset -1px 0 0 var(--border-color);
    backdrop-filter: blur(24px);
    border-radius: 1rem;
}

.top-toolbar {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    border-radius: 1rem;
    width: 100%;
}

.content-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: stretch;
    overflow: hidden;
    padding: 0;
    min-height: 0;
}

.toolbar-info {
    display: flex;
    gap: 0.5rem;
}

.toolbar-info-btn {
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.7rem;
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s, background 0.2s, box-shadow 0.2s;
    line-height: 1.2;
}

.toolbar-info-btn:hover:not(:disabled) {
    border-color: var(--accent-color);
    color: #111;
    background: rgba(251, 191, 36, 0.18);
    box-shadow: 0 15px 35px rgba(251, 191, 36, 0.15);
}

.toolbar-info-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.toolbar-generate {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.toolbar-generate #generate-btn {
    padding: 0.4rem 1rem;
    font-size: 0.95rem;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.45rem;
    min-width: 90px;
}

.toolbar-generate #generate-btn {
    padding: 0.35rem 0.9rem;
    font-size: 0.85rem;
    line-height: 1.1;
}

.brand {
    margin-bottom: 2rem;
}

.brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    font-family: 'Playwrite AU SA', cursive;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.badge {
    font-size: 0.75rem;
    background-color: rgba(245, 197, 24, 0.15);
    color: var(--accent-color);
    padding: 0.25rem 0.5rem;
    border-radius: 999px;
    font-weight: 600;
}

.controls-section {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

input[type="text"],
input[type="password"],
textarea,
select {
    padding: 0.75rem;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.875rem;
    transition: all 0.2s;
    backdrop-filter: blur(6px);
    appearance: none;
    -webkit-appearance: none;
}

select {
    background-image: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(15, 15, 25, 0.3)),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 8'%3E%3Cpath fill='rgba(249, 203, 42, 0.85)' d='M7 8L0.928 0.5h12.144L7 8z'/%3E%3C/svg%3E");
    background-repeat: no-repeat, no-repeat;
    background-size: 100% 100%, 0.75rem 0.4rem;
    background-position: center, right 0.75rem center;
    padding-right: 2.5rem;
    border-radius: 0.85rem;
    border: 1px solid rgba(255, 255, 255, 0.15);
    background-color: rgba(6, 7, 20, 0.95);
    box-shadow: inset 0 0 0 1px rgba(251, 191, 36, 0.3), 0 10px 25px rgba(0, 0, 0, 0.25);
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

select:focus,
select:hover {
    border-color: var(--accent-color);
    background-color: rgba(6, 7, 20, 0.9);
    box-shadow: inset 0 0 0 1px rgba(251, 191, 36, 0.5), 0 15px 35px rgba(0, 0, 0, 0.35);
}

select option {
    background-color: rgba(3, 3, 10, 0.95);
    color: var(--text-primary);
    padding: 0.35rem 0.75rem;
}

select option:checked,
select option:hover,
select option:focus {
    background-color: rgba(251, 191, 36, 0.25);
    color: #111;
}

select::-ms-expand {
    display: none;
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

textarea {
    resize: vertical;
    min-height: 100px;
}

/* Reference image input grid */
.image-inputs {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.image-input-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.image-input-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
}

.image-slot {
    border: 1px dashed var(--border-color);
    border-radius: 0.5rem;
    padding: 0.75rem;
    background-color: rgba(15, 23, 42, 0.8);
    color: var(--text-secondary);
    font-size: 0.75rem;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
    overflow: hidden;
}

.image-slot:hover {
    border-color: var(--accent-color);
}

.image-slot.drag-over {
    border-color: var(--accent-hover);
    background-color: rgba(99, 102, 241, 0.1);
}

.image-slot.empty .slot-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.75rem;
}

.image-slot .slot-icon {
    font-size: 1.5rem;
    color: var(--accent-color);
}

.slot-preview {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0.5rem;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.image-slot.filled {
    border-style: solid;
    background-color: transparent;
}

.image-slot .slot-placeholder {
    z-index: 1;
}

.slot-preview.hidden,
.slot-remove.hidden,
.slot-placeholder.hidden {
    display: none;
}

.slot-remove {
    position: absolute;
    top: 0.35rem;
    right: 0.35rem;
    background: rgba(15, 23, 42, 0.85);
    border: none;
    border-radius: 999px;
    color: var(--text-primary);
    width: 1.75rem;
    height: 1.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
            cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.4);
    z-index: 3;
}

.slot-input {
    display: none;
}

button#generate-btn {
    position: relative;
    padding: 1rem;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-hover));
    color: #111;
    border: none;
    border-radius: 0.75rem;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    overflow: hidden;
    box-shadow: 0 10px 15px rgba(245, 197, 24, 0.25);
    transition: transform 0.1s, filter 0.2s;
}

button#generate-btn:active {
    transform: scale(0.98);
}

button#generate-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    color: var(--text-primary);
    border-radius: 1.25rem;
    padding: 0.75rem;
    height: 100%;
    min-height: 0;
    overflow: hidden;
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: transparent;
}

.image-display-area {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    overflow: hidden;
    position: relative;
    background: radial-gradient(circle at top, rgba(27, 38, 102, 0.4), rgba(6, 6, 18, 0.95));
    border-radius: 1.5rem;
    cursor: grab;
    user-select: none;
    touch-action: none;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 30px 60px rgba(9, 5, 25, 0.65), inset 0 0 40px rgba(251, 191, 36, 0.1);
    min-height: 0;
}

.state-view {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hidden {
    display: none !important;
}

.icon-placeholder {
    width: 100%;
    height: 100%;
    border-radius: 0.75rem;
    border: 1px dashed rgba(251, 191, 36, 0.6);
    background: radial-gradient(circle at center, rgba(251, 191, 36, 0.15), transparent 60%);
    margin-bottom: 0;
}

#generated-image {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 0.5rem;
    box-shadow: none;
    transition: transform 0.2s;
    pointer-events: none;
    transform-origin: center center;
    display: block;
    margin: 0 auto;
}

.image-actions {
    margin-top: 1rem;
}

.action-btn {
    display: inline-block;
    background-color: rgba(245, 197, 24, 0.1);
    color: var(--accent-color);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    transition: background-color 0.2s, color 0.2s;
}

.action-btn:hover {
    background-color: rgba(245, 197, 24, 0.25);
    color: #111;
}

.canvas-toolbar {
    position: absolute;
    bottom: 1rem;
    right: 1rem;
    display: flex;
    gap: 0.35rem;
    background: rgba(15, 15, 15, 0.9);
    padding: 0.35rem 0.45rem;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    backdrop-filter: blur(10px);
    z-index: 10;
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.55);
}

.canvas-btn {
    background: rgba(255, 255, 255, 0.06);
    border: none;
    color: var(--accent-color);
    width: 34px;
    height: 34px;
    padding: 0;
    font-size: 0.9rem;
    border-radius: 50%;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s;
}

.canvas-btn:hover {
    background: rgba(245, 197, 24, 0.35);
}

.canvas-btn svg {
    width: 16px;
    height: 16px;
    color: inherit;
}

.canvas-btn svg {
    width: 16px;
    height: 16px;
    color: inherit;
}

/* Gallery Section */
.history-section {
    border-radius: 1.25rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    height: 180px;
    flex-shrink: 0;
    width: 100%;
    background: transparent;
}

.history-section h3 {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.gallery-grid {
    display: flex;
    gap: 0.75rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
    height: 100%;
}

.gallery-item {
    height: 100%;
    aspect-ratio: 1;
    border-radius: 0.5rem;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.02);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
}

.gallery-item:hover {
    transform: translateY(-2px);
}

.gallery-item.active {
    border-color: var(--accent-color);
    box-shadow: 0 0 25px rgba(251, 191, 36, 0.4);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Spinner */
.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.08);
    border-left-color: var(--accent-hover);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}