/* 
 * E-Commerce Modernization Guide CSS Theme
 * Design Palette: High-End Dark Neon Glassmorphism
 * Typography: Outfit (headings) & Inter (body)
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    --bg-main: #0B0A13;
    --bg-surface: #131224;
    --bg-surface-hover: #191730;
    --border-color: rgba(255, 255, 255, 0.06);
    --border-color-glow: rgba(139, 92, 246, 0.3);
    
    --text-primary: #F3F4F6;
    --text-secondary: #9CA3AF;
    --text-muted: #6B7280;
    
    --color-primary: #8B5CF6; /* Violet */
    --color-primary-glow: rgba(139, 92, 246, 0.15);
    --color-secondary: #06B6D4; /* Cyan */
    --color-accent: #EC4899; /* Pink */
    
    /* Developer Roles Badges (HSL) */
    --dev1-color: hsl(262, 80%, 65%);
    --dev2-color: hsl(190, 90%, 50%);
    --dev3-color: hsl(142, 70%, 50%);
    --dev4-color: hsl(35, 90%, 55%);
    --dev5-color: hsl(330, 85%, 60%);

    --dev1-bg: hsla(262, 80%, 65%, 0.1);
    --dev2-bg: hsla(190, 90%, 50%, 0.1);
    --dev3-bg: hsla(142, 70%, 50%, 0.1);
    --dev4-bg: hsla(35, 90%, 55%, 0.1);
    --dev5-bg: hsla(330, 85%, 60%, 0.1);
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    padding-bottom: 80px;
}

/* Base Layout & Containers */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header & Brand Banner */
.main-header {
    background: radial-gradient(circle at top right, rgba(139, 92, 246, 0.12), transparent 60%),
                radial-gradient(circle at top left, rgba(6, 182, 212, 0.08), transparent 50%),
                linear-gradient(to bottom, #0F0E1C, var(--bg-main));
    border-bottom: 1px solid var(--border-color);
    padding: 40px 0 24px;
    margin-bottom: 40px;
}

.brand-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.brand-info h1 {
    font-family: 'Outfit', sans-serif;
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, #FFF 30%, #A78BFA 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
    margin-bottom: 6px;
}

.brand-info p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.brand-badge {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.15) 0%, rgba(6, 182, 212, 0.15) 100%);
    border: 1px solid var(--border-color-glow);
    padding: 8px 16px;
    border-radius: 9999px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: #C084FC;
    box-shadow: 0 0 15px rgba(139, 92, 246, 0.15);
}

/* Navigation Tabs */
.tabs-navigation {
    display: flex;
    gap: 8px;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 6px;
    border-radius: 12px;
    margin-bottom: 30px;
    width: fit-content;
}

.tab-btn {
    background: none;
    border: none;
    outline: none;
    color: var(--text-secondary);
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.tab-btn:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--color-primary) 0%, #7C3AED 100%);
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.25);
}

/* Tab Contents Display logic */
.tab-content {
    display: none;
    animation: fadeIn 0.4s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Section Cards & Elements */
.section-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-title::after {
    content: '';
    flex-grow: 1;
    height: 1px;
    background: linear-gradient(to right, var(--border-color-glow), transparent);
    margin-left: 12px;
}

/* Grid Layouts */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 24px;
}

@media (max-width: 1024px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

/* Premium Card Design */
.panel-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.panel-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 100% 0%, rgba(255, 255, 255, 0.02) 0%, transparent 60%);
    pointer-events: none;
}

.panel-card:hover {
    border-color: rgba(139, 92, 246, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3),
                0 0 1px rgba(139, 92, 246, 0.1);
}

/* Developer Work Division Theme */
.dev-card {
    border-left: 4px solid var(--border-color);
}

.dev-card.dev-1 { border-left-color: var(--dev1-color); }
.dev-card.dev-2 { border-left-color: var(--dev2-color); }
.dev-card.dev-3 { border-left-color: var(--dev3-color); }
.dev-card.dev-4 { border-left-color: var(--dev4-color); }
.dev-card.dev-5 { border-left-color: var(--dev5-color); }

.dev-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 16px;
}

.dev-role-badge {
    padding: 4px 12px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.dev-1 .dev-role-badge { background-color: var(--dev1-bg); color: var(--dev1-color); }
.dev-2 .dev-role-badge { background-color: var(--dev2-bg); color: var(--dev2-color); }
.dev-3 .dev-role-badge { background-color: var(--dev3-bg); color: var(--dev3-color); }
.dev-4 .dev-role-badge { background-color: var(--dev4-bg); color: var(--dev4-color); }
.dev-5 .dev-role-badge { background-color: var(--dev5-bg); color: var(--dev5-color); }

.dev-title h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.dev-title span {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.dev-focus {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.dev-tasks-list {
    margin-bottom: 20px;
}

.dev-tasks-list h4, .dev-tables h4 {
    font-family: 'Outfit', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
}

.dev-tasks-list ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.dev-tasks-list li {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.dev-tasks-list li::before {
    content: '✦';
    color: var(--color-primary);
    font-size: 0.75rem;
    margin-top: 1px;
}

.dev-tables-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.table-pill {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.75rem;
    padding: 3px 8px;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    background-color: rgba(255, 255, 255, 0.02);
    color: var(--text-secondary);
    transition: var(--transition-smooth);
    cursor: pointer;
}

.table-pill:hover {
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.15);
    background-color: rgba(255, 255, 255, 0.05);
}

/* Database Directory Explorer Theme */
.search-bar-wrapper {
    display: flex;
    gap: 12px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: 16px;
    align-items: center;
    margin-bottom: 30px;
    transition: var(--transition-smooth);
}

.search-bar-wrapper:focus-within {
    border-color: var(--border-color-glow);
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.1);
}

.search-icon {
    color: var(--text-muted);
}

.search-input {
    background: none;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 1rem;
    width: 100%;
    font-family: inherit;
}

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

.search-stats {
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
    background-color: rgba(255, 255, 255, 0.04);
    padding: 4px 10px;
    border-radius: 6px;
}

/* Database Table Details Layout */
.db-tables-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.db-table-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.db-table-header {
    background-color: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.db-table-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.db-table-index {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.db-table-name {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 1.15rem;
    font-weight: 700;
    color: #FFF;
    letter-spacing: -0.3px;
}

.db-table-meta {
    display: flex;
    gap: 8px;
    align-items: center;
}

.db-table-body {
    padding: 24px;
}

/* Table Column Details Table Grid */
.columns-table-wrapper {
    overflow-x: auto;
}

.columns-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.columns-table th {
    font-family: 'Outfit', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    background-color: rgba(0, 0, 0, 0.15);
}

.columns-table td {
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.columns-table tr:hover td {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.01);
}

.col-mono {
    font-family: 'SFMono-Regular', Consolas, monospace;
    font-weight: 600;
    color: #E2E8F0;
}

.col-type {
    font-family: 'SFMono-Regular', Consolas, monospace;
    color: #A5B4FC;
}

/* Badges for Primary and Foreign Keys */
.key-badge {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.65rem;
    font-weight: 800;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}

.key-badge.pk {
    background-color: rgba(234, 179, 8, 0.1);
    color: #FACC15;
    border: 1px solid rgba(234, 179, 8, 0.2);
}

.key-badge.fk {
    background-color: rgba(6, 182, 212, 0.1);
    color: #22D3EE;
    border: 1px solid rgba(6, 182, 212, 0.2);
}

/* Gantt Chart Timeline Layout */
.gantt-wrapper {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 30px;
    overflow-x: auto;
}

.gantt-chart {
    min-width: 800px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.gantt-header {
    display: grid;
    grid-template-columns: 240px 1fr;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    padding-bottom: 10px;
}

.gantt-timeline-scales {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    text-align: center;
    font-family: 'Outfit', sans-serif;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.gantt-row {
    display: grid;
    grid-template-columns: 240px 1fr;
    align-items: center;
}

.gantt-row-label {
    display: flex;
    flex-direction: column;
}

.gantt-row-title {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.gantt-row-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.gantt-track {
    background-color: rgba(255, 255, 255, 0.02);
    border-radius: 8px;
    height: 36px;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.03);
}

.gantt-bar {
    position: absolute;
    height: calc(100% - 8px);
    top: 4px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    padding: 0 12px;
    font-size: 0.75rem;
    font-weight: 600;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

/* Custom positioning of Gantt Bars */
.bar-p1_1 { left: 0%; width: 25%; background: linear-gradient(to right, #8B5CF6, #6D28D9); color: #E5E7EB; }
.bar-p1_2 { left: 25%; width: 25%; background: linear-gradient(to right, #6D28D9, #4C1D95); color: #D1D5DB; }
.bar-p2 { left: 50%; width: 35%; background: linear-gradient(to right, #06B6D4, #0891B2); color: #E2E8F0; }
.bar-p3 { left: 85%; width: 15%; background: linear-gradient(to right, #EC4899, #DB2777); color: #FFF; }

/* Migration Code Explorer Panel Layout */
.explorer-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 24px;
}

@media (max-width: 900px) {
    .explorer-container {
        grid-template-columns: 1fr;
    }
}

.explorer-sidebar {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.explorer-card-btn {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    text-align: left;
    cursor: pointer;
    transition: var(--transition-smooth);
    width: 100%;
}

.explorer-card-btn:hover {
    border-color: rgba(139, 92, 246, 0.2);
    background-color: var(--bg-surface-hover);
}

.explorer-card-btn.active {
    border-color: var(--color-primary-glow);
    background: linear-gradient(to right, rgba(139, 92, 246, 0.1), transparent);
    border-left: 3px solid var(--color-primary);
}

.sidebar-dev-num {
    font-family: 'Outfit', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 4px;
}

.sidebar-dev-title {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.sidebar-dev-file {
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Code Display Block Styling */
.code-viewer-panel {
    background-color: #08070F;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
}

.code-viewer-header {
    background-color: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border-color);
    padding: 14px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.code-viewer-title {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.copy-btn {
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-smooth);
}

.copy-btn:hover {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.15);
}

.code-pre-wrapper {
    position: relative;
    max-height: 600px;
    overflow-y: auto;
}

.code-block {
    margin: 0;
    padding: 20px;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.85rem;
    line-height: 1.5;
    color: #E2E8F0;
    overflow-x: auto;
    background-color: inherit;
}

/* Footer credit styling */
.main-footer {
    border-top: 1px solid var(--border-color);
    padding: 30px 0;
    margin-top: 60px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}