/* Assignment Group Portal - Clean Minimalism Design Theme */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --bg: #f8fafc;
    --sidebar: #ffffff;
    --surface: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-light: #eff6ff;
    --border: #e2e8f0;
    --border-subtle: #f1f5f9;

    /* Status Pill Theme Colors */
    --badge-open-bg: #dcfce7;
    --badge-open-text: #166534;
    --badge-full-bg: #fee2e2;
    --badge-full-text: #991b1b;
    --badge-pending-bg: #fef9c3;
    --badge-pending-text: #854d0e;
    --badge-group-bg: #eff6ff;
    --badge-group-text: #1d4ed8;
    --badge-neutral-bg: #f1f5f9;
    --badge-neutral-text: #475569;

    /* Bootstrap Overrides */
    --bs-body-bg: var(--bg);
    --bs-body-color: var(--text-main);
    --bs-primary: var(--accent);
    --bs-primary-rgb: 37, 99, 235;
    --bs-border-color: var(--border);
    --bs-border-radius: 8px;
    --bs-border-radius-sm: 6px;
    --bs-border-radius-lg: 12px;
}

[data-bs-theme="dark"] {
    --bg: #0f172a;
    --sidebar: #1e293b;
    --surface: #1e293b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --accent-light: rgba(59, 130, 246, 0.15);
    --border: #334155;
    --border-subtle: #1e293b;

    --badge-open-bg: rgba(34, 197, 94, 0.16);
    --badge-open-text: #4ade80;
    --badge-full-bg: rgba(239, 68, 68, 0.16);
    --badge-full-text: #f87171;
    --badge-pending-bg: rgba(234, 179, 8, 0.16);
    --badge-pending-text: #facc15;
    --badge-group-bg: rgba(59, 130, 246, 0.16);
    --badge-group-text: #93c5fd;
    --badge-neutral-bg: rgba(148, 163, 184, 0.15);
    --badge-neutral-text: #cbd5e1;

    --bs-body-bg: var(--bg);
    --bs-body-color: var(--text-main);
    --bs-border-color: var(--border);
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--bg);
    color: var(--text-main);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

main {
    flex: 1 0 auto;
}

/* ==========================================================================
   Header & Navigation (Clean Minimalism)
   ========================================================================== */
.navbar-custom {
    height: 68px;
    background-color: var(--surface) !important;
    border-bottom: 1px solid var(--border);
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.navbar-brand {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main) !important;
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -0.01em;
}

.brand-icon-box {
    width: 32px;
    height: 32px;
    background: var(--accent);
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1rem;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted) !important;
    padding: 7px 14px !important;
    margin: 0 2px;
    border-radius: 8px;
    transition: all 0.15s ease-in-out;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.nav-link:hover {
    color: var(--text-main) !important;
    background-color: rgba(0, 0, 0, 0.03);
}

[data-bs-theme="dark"] .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.nav-link.active {
    background: var(--accent-light) !important;
    color: var(--accent) !important;
    font-weight: 600;
}

/* User Pill Component */
.user-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg);
    padding: 5px 12px;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-main);
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.user-pill:hover,
.user-pill:focus {
    background: var(--surface);
    color: var(--text-main);
    border-color: var(--border);
}

.avatar {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: #cbd5e1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: #1e293b;
    text-transform: uppercase;
}

[data-bs-theme="dark"] .avatar {
    background: #475569;
    color: #f8fafc;
}

/* ==========================================================================
   Cards & Surfaces
   ========================================================================== */
.card,
.card-portal {
    background-color: var(--surface) !important;
    border: 1px solid var(--border) !important;
    border-radius: 12px !important;
    box-shadow: none !important;
    overflow: hidden;
}

.card-header {
    background-color: var(--surface) !important;
    border-bottom: 1px solid var(--border) !important;
    padding: 16px 20px !important;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-main);
}

.card-body {
    padding: 20px !important;
}

.card-footer {
    background-color: var(--surface) !important;
    border-top: 1px solid var(--border) !important;
    padding: 14px 20px !important;
}

/* ==========================================================================
   Stat Metric Cards (Clean Minimalism)
   ========================================================================== */
.stat-card,
.metric-card {
    background: var(--surface) !important;
    padding: 20px !important;
    border-radius: 12px !important;
    border: 1px solid var(--border) !important;
    box-shadow: none !important;
    transition: border-color 0.15s ease;
}

/* Neutralize any previous side-tab border overrides */
.metric-card.border-start,
.stat-card.border-start {
    border-left: 1px solid var(--border) !important;
}

.stat-label,
.metric-label {
    font-size: 0.75rem !important;
    color: var(--text-muted) !important;
    text-transform: uppercase !important;
    letter-spacing: 0.05em !important;
    margin-bottom: 8px !important;
    font-weight: 600 !important;
}

.stat-value,
.metric-number {
    font-size: 1.5rem !important;
    font-weight: 700 !important;
    color: var(--text-main) !important;
    line-height: 1.2;
}

/* ==========================================================================
   Tables (Clean Minimalism)
   ========================================================================== */
.table-container {
    background: var(--surface);
    border-radius: 12px;
    border: 1px solid var(--border);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.table-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--surface);
}

.data-table,
.table-portal,
.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 0;
    color: var(--text-main);
}

.data-table th,
.table-portal th,
.table thead th {
    text-align: left;
    padding: 14px 20px !important;
    font-size: 0.75rem !important;
    color: var(--text-muted) !important;
    text-transform: uppercase !important;
    letter-spacing: 0.05em !important;
    border-bottom: 1px solid var(--border) !important;
    background-color: var(--surface) !important;
    font-weight: 600 !important;
    border-top: none;
}

[data-bs-theme="light"] .data-table th,
[data-bs-theme="light"] .table-portal th,
[data-bs-theme="light"] .table thead th {
    background-color: #fafafa !important;
}

.data-table td,
.table-portal td,
.table tbody td {
    padding: 14px 20px !important;
    border-bottom: 1px solid var(--border) !important;
    font-size: 0.9rem !important;
    color: var(--text-main);
    vertical-align: middle;
    background-color: transparent !important;
}

.table-hover tbody tr:hover td {
    background-color: rgba(0, 0, 0, 0.015) !important;
}

[data-bs-theme="dark"] .table-hover tbody tr:hover td {
    background-color: rgba(255, 255, 255, 0.02) !important;
}

/* ==========================================================================
   Badges (Clean Minimalism - Pill shape, muted pastel backgrounds)
   ========================================================================== */
.badge {
    padding: 4px 10px !important;
    border-radius: 999px !important;
    font-size: 0.75rem !important;
    font-weight: 600 !important;
    letter-spacing: 0.02em;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    border: none !important;
}

/* Clean Minimalism specific status badge classes */
.badge-full,
.badge-danger,
.bg-danger,
.badge-status.bg-danger {
    background-color: var(--badge-full-bg) !important;
    color: var(--badge-full-text) !important;
}

.badge-open,
.badge-success,
.bg-success,
.badge-status.bg-success {
    background-color: var(--badge-open-bg) !important;
    color: var(--badge-open-text) !important;
}

.badge-pending,
.badge-warning,
.bg-warning,
.badge-status.bg-warning {
    background-color: var(--badge-pending-bg) !important;
    color: var(--badge-pending-text) !important;
}

.badge-info,
.badge-group,
.bg-primary,
.badge-status.bg-primary {
    background-color: var(--badge-group-bg) !important;
    color: var(--badge-group-text) !important;
}

.badge-secondary,
.bg-secondary,
.badge-status.bg-secondary {
    background-color: var(--badge-neutral-bg) !important;
    color: var(--badge-neutral-text) !important;
}

/* ==========================================================================
   Buttons (Clean Minimalism - 6px radius, flat accent, clean outline)
   ========================================================================== */
.btn {
    padding: 8px 16px !important;
    border-radius: 6px !important;
    font-size: 0.85rem !important;
    font-weight: 500 !important;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s ease-in-out;
    box-shadow: none !important;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.btn-sm {
    padding: 5px 12px !important;
    font-size: 0.8rem !important;
    border-radius: 5px !important;
}

.btn-primary {
    background-color: var(--accent) !important;
    border-color: var(--accent) !important;
    color: #ffffff !important;
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--accent-hover) !important;
    border-color: var(--accent-hover) !important;
    color: #ffffff !important;
}

.btn-outline-primary {
    background-color: transparent !important;
    border-color: var(--accent) !important;
    color: var(--accent) !important;
}

.btn-outline-primary:hover,
.btn-outline-primary:focus {
    background-color: var(--accent-light) !important;
    border-color: var(--accent) !important;
    color: var(--accent) !important;
}

.btn-outline-secondary {
    background-color: var(--surface) !important;
    border-color: var(--border) !important;
    color: var(--text-muted) !important;
}

.btn-outline-secondary:hover,
.btn-outline-secondary:focus {
    background-color: var(--bg) !important;
    border-color: var(--border) !important;
    color: var(--text-main) !important;
}

.btn-danger {
    background-color: #ef4444 !important;
    border-color: #ef4444 !important;
    color: #ffffff !important;
}

.btn-danger:hover {
    background-color: #dc2626 !important;
    border-color: #dc2626 !important;
}

.btn-outline-danger {
    background-color: transparent !important;
    border-color: #ef4444 !important;
    color: #ef4444 !important;
}

.btn-outline-danger:hover {
    background-color: var(--badge-full-bg) !important;
    color: var(--badge-full-text) !important;
}

/* ==========================================================================
   Form Controls & Search Bars
   ========================================================================== */
.form-control,
.form-select {
    background-color: var(--surface) !important;
    border: 1px solid var(--border) !important;
    border-radius: 6px !important;
    font-size: 0.875rem !important;
    color: var(--text-main) !important;
    padding: 8px 12px !important;
    box-shadow: none !important;
    transition: border-color 0.15s ease;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--accent) !important;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12) !important;
    outline: none;
}

.input-group-text {
    background-color: var(--bg) !important;
    border: 1px solid var(--border) !important;
    color: var(--text-muted) !important;
    font-size: 0.875rem !important;
}

/* ==========================================================================
   Alerts & Notifications
   ========================================================================== */
.alert {
    border-radius: 8px !important;
    border: 1px solid var(--border) !important;
    font-size: 0.875rem;
    padding: 12px 18px !important;
    box-shadow: none !important;
}

.alert-success {
    background-color: var(--badge-open-bg) !important;
    color: var(--badge-open-text) !important;
    border-color: rgba(34, 197, 94, 0.25) !important;
}

.alert-danger {
    background-color: var(--badge-full-bg) !important;
    color: var(--badge-full-text) !important;
    border-color: rgba(239, 68, 68, 0.25) !important;
}

.alert-warning {
    background-color: var(--badge-pending-bg) !important;
    color: var(--badge-pending-text) !important;
    border-color: rgba(234, 179, 8, 0.25) !important;
}

.alert-info {
    background-color: var(--badge-group-bg) !important;
    color: var(--badge-group-text) !important;
    border-color: rgba(37, 99, 235, 0.25) !important;
}

/* ==========================================================================
   Progress Bars
   ========================================================================== */
.progress,
.group-progress {
    height: 6px !important;
    background-color: var(--border) !important;
    border-radius: 9999px !important;
    overflow: hidden;
    box-shadow: none !important;
}

.progress-bar {
    background-color: var(--accent) !important;
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
    border-top: 1px solid var(--border) !important;
    background-color: var(--surface) !important;
    color: var(--text-muted) !important;
}

/* ==========================================================================
   Dropdowns
   ========================================================================== */
.dropdown-menu {
    background-color: var(--surface) !important;
    border: 1px solid var(--border) !important;
    border-radius: 8px !important;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03) !important;
    padding: 6px !important;
}

.dropdown-item {
    font-size: 0.85rem !important;
    padding: 7px 12px !important;
    border-radius: 6px !important;
    color: var(--text-main) !important;
}

.dropdown-item:hover {
    background-color: var(--bg) !important;
    color: var(--accent) !important;
}

.dropdown-divider {
    border-top-color: var(--border) !important;
    margin: 4px 0 !important;
}