@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&family=Montserrat:wght@400;500;600;700&family=Inter:wght@400;500;600;700&family=Roboto:wght@400;500;700&family=Playfair+Display:wght@400;600;700&family=Bebas+Neue&display=swap');

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

:root {
    --primary: #667eea;
    --primary-dark: #5568d3;
    --secondary: #764ba2;
    --bg-dark: #0f0f1e;
    --bg-card: #1a1a2e;
    --bg-hover: #252538;
    --text-primary: #ffffff;
    --text-secondary: #a0a0b8;
    --border: #2d2d44;
    --success: #43e97b;
    --danger: #f5576c;
    --warning: #fee140;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-actions {
    display: flex;
    gap: 0.75rem;
}

/* Main Content */
.main-content {
    display: grid;
    grid-template-columns: 400px 1fr;
    flex: 1;
    height: calc(100vh - 73px);
}

/* Control Panel */
.control-panel {
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    padding: 1.5rem;
}

.control-panel::-webkit-scrollbar {
    width: 8px;
}

.control-panel::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

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

.control-panel::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

.panel-section {
    margin-bottom: 2rem;
}

.panel-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-dark);
}

.upload-area:hover {
    border-color: var(--primary);
    background: var(--bg-hover);
}

.upload-area.drag-over {
    border-color: var(--primary);
    background: var(--bg-hover);
    transform: scale(1.02);
}

.upload-area svg {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.upload-area p {
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.upload-area span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Preset Backgrounds */
.preset-backgrounds {
    margin-top: 1.5rem;
}

.label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    display: block;
}

.preset-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}

.preset-item {
    cursor: pointer;
    text-align: center;
    transition: transform 0.2s ease;
}

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

.preset-preview {
    width: 100%;
    aspect-ratio: 1;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    border: 2px solid transparent;
    transition: border-color 0.2s ease;
}

.preset-item:hover .preset-preview {
    border-color: var(--primary);
}

.preset-item.active .preset-preview {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2);
}

.preset-item span {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Textarea */
textarea {
    width: 100%;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.875rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
    resize: vertical;
    transition: border-color 0.2s ease;
}

textarea:focus {
    outline: none;
    border-color: var(--primary);
}

/* Quick Templates */
.quick-templates {
    margin-top: 1rem;
}

.template-chips {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.chip {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.625rem 0.875rem;
    font-size: 0.875rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    font-family: inherit;
}

.chip:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
    transform: translateX(4px);
}

/* Icon Grid */
.icon-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 0.5rem;
}

.icon-chip {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.75rem;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 1;
}

.icon-chip:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
    transform: scale(1.1);
}

.icon-chip:active {
    transform: scale(0.95);
}

#iconText {
    width: 100%;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.625rem 0.875rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1.5rem;
    text-align: center;
    transition: border-color 0.2s ease;
}

#iconText:focus {
    outline: none;
    border-color: var(--primary);
}

/* Upload Area Small */
.upload-area-small {
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 1.5rem 1rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-dark);
    margin-bottom: 1rem;
}

.upload-area-small:hover {
    border-color: var(--primary);
    background: var(--bg-hover);
}

.upload-area-small.drag-over {
    border-color: var(--primary);
    background: var(--bg-hover);
    transform: scale(1.02);
}

.upload-area-small svg {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.upload-area-small p {
    font-weight: 500;
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.upload-area-small span {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Divider Text */
.divider-text {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 1rem 0;
}

.divider-text::before,
.divider-text::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border);
}

.divider-text span {
    padding: 0 1rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Info Box */
.info-box {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.875rem;
    margin-top: 1rem;
}

.info-box code {
    background: var(--bg-hover);
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 0.7rem;
    color: var(--primary);
}

/* Control Groups */
.control-group {
    margin-bottom: 1.25rem;
}

.control-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.control-group select,
.control-group input[type="text"] {
    width: 100%;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.625rem 0.875rem;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
    transition: border-color 0.2s ease;
}

.control-group select:focus,
.control-group input[type="text"]:focus {
    outline: none;
    border-color: var(--primary);
}

/* Range Input */
input[type="range"] {
    width: 100%;
    height: 6px;
    background: var(--bg-dark);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

/* Color Picker */
.color-picker-group {
    display: grid;
    grid-template-columns: 60px 1fr;
    gap: 0.75rem;
}

input[type="color"] {
    width: 100%;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-dark);
    cursor: pointer;
}

input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 4px;
}

input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 4px;
}

/* Toggle */
.toggle-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

input[type="checkbox"] {
    width: 44px;
    height: 24px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 12px;
    position: relative;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    transition: background 0.3s ease;
}

input[type="checkbox"]:checked {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-color: var(--primary);
}

input[type="checkbox"]::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: transform 0.3s ease;
}

input[type="checkbox"]:checked::before {
    transform: translateX(20px);
}

.toggle-label {
    font-size: 0.875rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* Button Group */
.button-group {
    display: flex;
    gap: 0.5rem;
}

/* Size Buttons */
.btn-size {
    flex: 1;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    text-align: center;
}

.btn-size div {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.btn-size span {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.btn-size:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
}

.btn-size.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-color: var(--primary);
}

.btn-size.active div,
.btn-size.active span {
    color: white;
}

/* Custom Gradient */
.custom-gradient {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.gradient-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

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

.gradient-color-group label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.gradient-color-group input[type="color"] {
    width: 100%;
    height: 50px;
}

.btn-apply {
    grid-column: 1 / -1;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.btn-apply:hover {
    background: var(--bg-hover);
    border-color: var(--primary);
    color: var(--primary);
}

/* Buttons */
.btn-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-secondary);
}

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

.btn-icon.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-color: var(--primary);
    color: white;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: inherit;
    font-size: 0.9375rem;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-large {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1rem;
}

.btn-secondary {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: inherit;
    font-size: 0.875rem;
}

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

/* Preview Panel */
.preview-panel {
    background: var(--bg-dark);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.preview-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.preview-actions {
    display: flex;
    gap: 0.5rem;
}

/* Canvas Container */
.canvas-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

#canvas {
    max-width: 100%;
    max-height: calc(100vh - 200px);
    width: auto;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    background: var(--bg-card);
    cursor: default;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.canvas-info {
    display: flex;
    gap: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 350px 1fr;
    }
}

@media (max-width: 968px) {
    .main-content {
        grid-template-columns: 1fr;
        height: auto;
    }

    .control-panel {
        border-right: none;
        border-bottom: 1px solid var(--border);
        max-height: 60vh;
    }

    .preview-panel {
        padding: 1rem;
    }

    #canvas {
        max-height: 50vh;
    }
}

@media (max-width: 640px) {
    .header {
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
    }

    .logo h1 {
        font-size: 1rem;
    }

    .control-panel {
        padding: 1rem;
    }

    .preset-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .btn-secondary span {
        display: none;
    }
}

/* Loading Animation */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Smooth Transitions */
* {
    transition: background-color 0.2s ease, border-color 0.2s ease;
}