:root {
    /* Dark Theme (Default) */
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --bg-card: #1e1e3f;
    --bg-input: #2a2a4a;
    --bg-hover: #3a3a5a;
    
    --text-primary: #e2e8f0;
    --text-secondary: #a0aec0;
    --text-muted: #718096;
    
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-success: #10b981;
    --accent-danger: #ef4444;
    --accent-warning: #f59e0b;
    
    --border-color: #374151;
    --border-hover: #4b5563;
    
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-dark: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 100%);
    --gradient-card: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

/* Light Theme */
body.light-theme {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --bg-hover: #f1f5f9;
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-success: #10b981;
    --accent-danger: #ef4444;
    --accent-warning: #f59e0b;
    
    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;
    
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-dark: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    --gradient-card: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gradient-dark);
    min-height: 100vh;
    line-height: 1.6;
    color: var(--text-primary);
    transition: all 0.3s ease;
}

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

.app-header {
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 2rem 0;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

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

.logo i {
    font-size: 2.5rem;
    color: var(--text-primary);
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.theme-toggle {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-primary);
}

.theme-toggle:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
    transform: scale(1.05);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 300;
}

.main-content {
    flex: 1;
    padding: 3rem 2rem;
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.card-header {
    background: var(--gradient-card);
    padding: 2rem;
    color: #fff;
}

.card-header h2 {
    font-size: 1.8rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.order-form {
    padding: 2rem;
}

.form-section {
    margin-bottom: 2.5rem;
}

.form-section:last-child {
    margin-bottom: 0;
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.input-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.2s ease;
    background: var(--bg-input);
    color: var(--text-primary);
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

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

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.section-header h3 {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.products-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.product-row {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: flex-end;
    gap: 1rem;
    transition: all 0.3s ease;
    position: relative;
}

.product-row:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.product-inputs {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 1rem;
    flex: 1;
}

.quantity-group input,
.price-group input {
    text-align: center;
}

.price-display {
    position: relative;
    display: flex;
    align-items: center;
}

.currency {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
    font-weight: 500;
    z-index: 1;
}

.price-display input {
    padding-left: 2rem;
    background: var(--bg-tertiary);
    color: var(--accent-success);
    font-weight: 600;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    min-height: 44px;
}

.btn:hover {
    transform: translateY(-1px);
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--accent-success) 0%, #047857 100%);
    color: #fff;
    box-shadow: var(--shadow-sm);
    font-size: 1.1rem;
    padding: 1rem 2rem;
    width: 100%;
}

.btn-primary:hover {
    box-shadow: var(--shadow-md);
}

.btn-add {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    color: #fff;
    box-shadow: var(--shadow-sm);
}

.btn-add:hover {
    box-shadow: var(--shadow-md);
}

.btn-remove {
    background: linear-gradient(135deg, var(--accent-danger) 0%, #dc2626 100%);
    color: #fff;
    padding: 0.75rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.btn-remove:hover {
    box-shadow: var(--shadow-md);
}

.form-actions {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

/* Awesomplete customization */
.awesomplete {
    width: 100%;
}

.awesomplete > ul {
    border-radius: 12px;
    border: 2px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    background: var(--bg-card);
}

.awesomplete > ul > li {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.awesomplete > ul > li:hover,
.awesomplete > ul > li[aria-selected="true"] {
    background: var(--accent-primary);
    color: #fff;
}

/* Animations */
@keyframes slideOut {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(-100%);
    }
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .main-content {
        padding: 1.5rem 1rem;
    }
    
    .card-header,
    .order-form {
        padding: 1.5rem;
    }
    
    .logo h1 {
        font-size: 2rem;
    }
    
    .header-top {
        flex-direction: column;
        gap: 1rem;
    }
    
    .section-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .product-inputs {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .product-row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn-remove {
        align-self: flex-end;
        margin-top: 1rem;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 1rem;
    }
    
    .logo {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .logo h1 {
        font-size: 1.8rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .theme-toggle {
        width: 40px;
        height: 40px;
    }
}