/* CSS Design System for Mercado Livre Profit Analyzer */
:root {
    --bg-main: #080c14;
    --bg-card: #111827;
    --bg-card-hover: #172237;
    --border-color: #1f2937;
    --border-color-focus: #3b82f6;
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --accent-cyan: #06b6d4;
    --accent-emerald: #10b981;
    --accent-purple: #8b5cf6;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    
    --accent-cyan-glow: rgba(6, 182, 212, 0.15);
    --accent-emerald-glow: rgba(16, 185, 129, 0.15);
    --accent-danger-glow: rgba(239, 68, 68, 0.15);
    
    --font-sans: 'Inter', sans-serif;
    --font-heading: 'Outfit', sans-serif;
    
    --sidebar-width: 260px;
    --border-radius-lg: 16px;
    --border-radius-md: 10px;
    --border-radius-sm: 6px;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    display: flex;
    overflow-x: hidden;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Utilities */
.hidden {
    display: none !important;
}
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    background: var(--border-color);
    color: var(--text-secondary);
}
.warning-badge {
    background: rgba(245, 158, 11, 0.15);
    color: var(--accent-warning);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

/* App Container Layout */
.app-container {
    display: flex;
    width: 100vw;
    height: 100vh;
}

/* Sidebar Styling */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-card);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px;
    flex-shrink: 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-emerald));
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--bg-main);
    box-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
}

.brand h2 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(to right, #ffffff, #9ca3af);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.nav-item {
    background: none;
    border: none;
    outline: none;
    padding: 14px 16px;
    border-radius: var(--border-radius-md);
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.nav-item i {
    font-size: 1.1rem;
    transition: var(--transition-fast);
}

.nav-item:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.03);
}

.nav-item.active {
    color: var(--accent-cyan);
    background-color: var(--accent-cyan-glow);
    border: 1px solid rgba(6, 182, 212, 0.2);
    font-weight: 600;
}

.nav-item.active i {
    color: var(--accent-cyan);
}

.sidebar-footer {
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--accent-emerald);
    font-weight: 500;
}

.status-indicator .dot {
    width: 6px;
    height: 6px;
    background-color: var(--accent-emerald);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-emerald);
    display: inline-block;
}

/* Main Content Area */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 40px;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 32px;
}

.header-info h1 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 6px;
}

.header-info p {
    font-size: 0.95rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Tab panes */
.tab-pane {
    display: none;
    flex-direction: column;
    gap: 32px;
}

.tab-pane.active {
    display: flex;
}

/* Card Styling */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.card-title-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.card-title-group h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
}

.card-icon {
    font-size: 1.25rem;
}

.card-icon.accent { color: var(--accent-cyan); }
.card-icon.warning { color: var(--accent-warning); }
.card-icon.info { color: var(--accent-purple); }

.card-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.5;
}

/* Dropzone styling */
.dropzone-card {
    border: 2px dashed var(--border-color);
    background: rgba(17, 24, 39, 0.4);
    cursor: pointer;
    transition: var(--transition-normal);
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dropzone-card:hover, .dropzone-card.dragover {
    border-color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.03);
    box-shadow: 0 0 30px var(--accent-cyan-glow);
}

.hidden-file-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.dropzone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
    pointer-events: none;
}

.icon-circle {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.03);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.dropzone-card:hover .icon-circle, .dropzone-card.dragover .icon-circle {
    color: var(--accent-cyan);
    background-color: var(--accent-cyan-glow);
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(6, 182, 212, 0.2);
}

.dropzone-content h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
}

.dropzone-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    max-width: 400px;
}

.file-limits {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 12px 24px;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition-fast);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-emerald));
    color: var(--bg-main);
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.35);
}

.btn-secondary {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.03);
    border-color: var(--text-secondary);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.8rem;
    border-radius: var(--border-radius-sm);
}

/* Form Styles */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.form-select, .form-input, .search-input {
    width: 100%;
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 12px 16px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-fast);
}

.form-select:focus, .form-input:focus, .search-input:focus {
    border-color: var(--border-color-focus);
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.15);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg fill='%239ca3af' height='24' viewBox='0 0 24 24' width='24' xmlns='http://www.w3.org/2000/svg'><path d='M7 10l5 5 5-5z'/><path d='M0 0h24v24H0z' fill='none'/></svg>");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
    cursor: pointer;
}

/* Column Mapper Specifics */
.column-mapper-card {
    border-left: 4px solid var(--accent-cyan);
}

.mapper-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

.mapper-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Missing Costs Section */
.missing-costs-card {
    border-left: 4px solid var(--accent-warning);
}

.missing-costs-list-container {
    max-height: 300px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    margin-bottom: 24px;
}

.missing-cost-input {
    max-width: 160px;
    padding: 8px 12px;
    font-size: 0.85rem;
}

.card-actions {
    display: flex;
    justify-content: flex-end;
}

/* Stats Dashboard */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    transition: var(--transition-fast);
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.1);
}

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.stat-icon.income {
    background-color: var(--accent-cyan-glow);
    color: var(--accent-cyan);
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.1);
}

.stat-icon.cost {
    background-color: rgba(139, 92, 246, 0.1);
    color: var(--accent-purple);
    box-shadow: 0 0 15px rgba(139, 92, 246, 0.1);
}

.stat-icon.profit.positive {
    background-color: var(--accent-emerald-glow);
    color: var(--accent-emerald);
    box-shadow: 0 0 15px rgba(16, 185, 129, 0.15);
}

.stat-icon.profit.negative {
    background-color: var(--accent-danger-glow);
    color: var(--accent-danger);
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.15);
}

.stat-icon.margin.positive {
    background-color: var(--accent-emerald-glow);
    color: var(--accent-emerald);
}

.stat-icon.margin.negative {
    background-color: var(--accent-danger-glow);
    color: var(--accent-danger);
}

.stat-details {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.stat-value {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.stat-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Tables design */
.table-card {
    padding: 0;
}

.table-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.table-scroll-container {
    overflow-x: auto;
    max-height: 500px;
    overflow-y: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    text-align: left;
}

.data-table th {
    background-color: rgba(255, 255, 255, 0.01);
    color: var(--text-secondary);
    font-weight: 600;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.data-table td {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    vertical-align: middle;
}

.data-table tbody tr {
    transition: var(--transition-fast);
}

.data-table tbody tr:hover {
    background-color: var(--bg-card-hover);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* Profit and margin colors in tables */
.text-profit { color: var(--accent-emerald); font-weight: 600; }
.text-loss { color: var(--accent-danger); font-weight: 600; }

.badge-margin {
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}
.badge-margin.positive {
    background-color: rgba(16, 185, 129, 0.12);
    color: var(--accent-emerald);
}
.badge-margin.negative {
    background-color: rgba(239, 68, 68, 0.12);
    color: var(--accent-danger);
}

/* Database Manager Layout */
.db-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 32px;
    align-items: flex-start;
}

.db-form-card {
    position: sticky;
    top: 40px;
}

.db-form {
    display: flex;
    flex-direction: column;
    margin-top: 10px;
}

.form-buttons {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.form-buttons .btn {
    flex-grow: 1;
}

.db-list-card {
    padding: 0;
}

.list-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.search-box {
    position: relative;
    max-width: 240px;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-input {
    padding-left: 40px;
    padding-top: 8px;
    padding-bottom: 8px;
}

.db-table-container {
    max-height: calc(100vh - 280px);
}

/* Action buttons in tables */
.action-btn {
    background: none;
    border: none;
    outline: none;
    width: 32px;
    height: 32px;
    border-radius: var(--border-radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.edit-btn {
    color: var(--accent-cyan);
}
.edit-btn:hover {
    background-color: var(--accent-cyan-glow);
}

.delete-btn {
    color: var(--accent-danger);
}
.delete-btn:hover {
    background-color: var(--accent-danger-glow);
}

/* Floating Toast Notification */
.toast {
    position: fixed;
    bottom: 40px;
    right: 40px;
    z-index: 1000;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 16px 24px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    font-size: 0.9rem;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: none;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.toast.success {
    border-color: rgba(16, 185, 129, 0.3);
    color: var(--accent-emerald);
}
.toast.success i {
    color: var(--accent-emerald);
}

.toast.error {
    border-color: rgba(239, 68, 68, 0.3);
    color: var(--accent-danger);
}
.toast.error i {
    color: var(--accent-danger);
}

.toast.warning {
    border-color: rgba(245, 158, 11, 0.3);
    color: var(--accent-warning);
}
.toast.warning i {
    color: var(--accent-warning);
}

/* Animations */
@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
    100% { transform: scale(1); opacity: 1; }
}

.badge-margin.negative {
    animation: none;
}

/* Responsive adjustment */
@media (max-width: 900px) {
    .db-layout {
        grid-template-columns: 1fr;
    }
    .db-form-card {
        position: static;
    }
}
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 16px;
    }
    .brand {
        margin-bottom: 16px;
    }
    .nav-menu {
        flex-direction: row;
    }
    .nav-item {
        flex-grow: 1;
        justify-content: center;
        padding: 10px;
    }
    .main-content {
        padding: 20px;
    }
    .mapper-row {
        grid-template-columns: 1fr;
    }
}