/* ─── Design tokens ─────────────────────────────────────────────────────── */

:root {
    /* Brand palette — modern navy primary, neutral surfaces */
    --pd-navy-900: #0b1f3a;
    --pd-navy-800: #142b4f;
    --pd-navy-700: #1d3866;
    --pd-navy-100: #e8edf5;

    --pd-accent: #d4af37;        /* warm gold — used sparingly */

    --pd-bg: #f4f6fa;
    --pd-surface: #ffffff;
    --pd-border: #e3e7ee;
    --pd-border-strong: #cfd5e0;

    --pd-text: #0f172a;
    --pd-text-muted: #64748b;
    --pd-text-faint: #94a3b8;

    --pd-success: #10b981;
    --pd-danger: #e11d48;
    --pd-warning: #d97706;
    --pd-info: #0284c7;

    --pd-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04), 0 1px 3px rgba(15, 23, 42, 0.06);
    --pd-shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 4px 12px rgba(15, 23, 42, 0.06);
    --pd-shadow-lg: 0 4px 8px rgba(15, 23, 42, 0.04), 0 12px 28px rgba(15, 23, 42, 0.08);

    --pd-radius: 10px;
    --pd-radius-sm: 6px;

    /* Bootstrap overrides — keeps badge/btn/alert utilities on-brand */
    --bs-primary: var(--pd-navy-800);
    --bs-primary-rgb: 20, 43, 79;
    --bs-link-color: var(--pd-navy-800);
    --bs-link-hover-color: var(--pd-navy-900);
    --bs-body-color: var(--pd-text);
    --bs-body-bg: var(--pd-bg);
    --bs-border-color: var(--pd-border);
}

/* ─── Base typography ───────────────────────────────────────────────────── */

html, body {
    height: 100%;
}

body {
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-feature-settings: "cv02", "cv11", "ss01";
    background-color: var(--pd-bg);
    color: var(--pd-text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--pd-text);
}

.display-4, .display-5, .display-6 {
    font-weight: 700;
    letter-spacing: -0.02em;
}

a { text-decoration: none; }
a:hover { text-decoration: underline; }

.text-muted, .text-secondary {
    color: var(--pd-text-muted) !important;
}

code, kbd, pre, samp {
    font-family: ui-monospace, 'SF Mono', 'Cascadia Code', 'JetBrains Mono', Consolas, monospace;
    font-size: 0.875em;
}

/* ─── App chrome (nav + footer) ─────────────────────────────────────────── */

.app-nav {
    background: var(--pd-navy-900);
    border-bottom: 1px solid var(--pd-navy-800);
    box-shadow: var(--pd-shadow-sm);
    padding-top: 0.6rem;
    padding-bottom: 0.6rem;
    z-index: 1030;
}

.app-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    color: #fff !important;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.app-brand:hover {
    text-decoration: none;
    color: #fff !important;
}

.app-brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--pd-accent) 0%, #b8961f 100%);
    color: var(--pd-navy-900);
    font-weight: 800;
    font-size: 0.85rem;
    letter-spacing: -0.02em;
}

.app-brand-name {
    font-size: 1.05rem;
}

.app-nav-links .nav-link {
    color: rgba(255, 255, 255, 0.75) !important;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.5rem 0.9rem !important;
    border-radius: var(--pd-radius-sm);
    transition: color 0.12s ease, background 0.12s ease;
}

.app-nav-links .nav-link:hover {
    color: #fff !important;
    background: rgba(255, 255, 255, 0.06);
    text-decoration: none;
}

.app-nav-links .nav-link.active {
    color: #fff !important;
    background: rgba(255, 255, 255, 0.1);
}

.navbar-toggler {
    border-color: rgba(255, 255, 255, 0.25);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 0.15rem rgba(255, 255, 255, 0.15);
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255,255,255,0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

.app-main {
    padding-top: 1.75rem;
    padding-bottom: 2rem;
    min-height: calc(100vh - 64px);
}

.app-footer {
    padding: 1.5rem 0;
    margin-top: 2.5rem;
    border-top: 1px solid var(--pd-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--pd-text-muted);
    font-size: 0.85rem;
}

/* ─── Page header ───────────────────────────────────────────────────────── */

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--pd-border);
    flex-wrap: wrap;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.015em;
}

.page-header-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* ─── Cards ─────────────────────────────────────────────────────────────── */

.card {
    background: var(--pd-surface);
    border: 1px solid var(--pd-border);
    border-radius: var(--pd-radius);
    box-shadow: var(--pd-shadow-sm);
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--pd-border);
    padding: 0.85rem 1.15rem;
    font-weight: 600;
    color: var(--pd-text);
}

.card-header.bg-primary,
.card-header.bg-secondary,
.card-header.bg-danger-subtle,
.card-header.bg-warning-subtle {
    border-bottom-color: transparent;
}

.card-body {
    padding: 1.15rem;
}

.card-footer {
    background: transparent;
    border-top: 1px solid var(--pd-border);
    padding: 0.85rem 1.15rem;
}

/* ─── Tables ────────────────────────────────────────────────────────────── */

.table {
    --bs-table-bg: transparent;
    margin-bottom: 0;
    color: var(--pd-text);
}

.table > :not(caption) > * > * {
    padding: 0.7rem 0.85rem;
    border-bottom-color: var(--pd-border);
}

.table thead th,
.table > thead.table-light th {
    background: #fafbfd;
    color: var(--pd-text-muted);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--pd-border);
}

.table thead th a {
    color: inherit !important;
}

.table-hover > tbody > tr:hover > * {
    background: rgba(20, 43, 79, 0.025);
    color: var(--pd-text);
}

.table-actions {
    white-space: nowrap;
}

/* Highlighted rows (used in stats comparison views) */
.table-success, .table-info, .table-warning, .table-danger {
    --bs-table-color: var(--pd-text);
}

/* ─── Buttons ───────────────────────────────────────────────────────────── */

.btn {
    font-weight: 500;
    border-radius: var(--pd-radius-sm);
    padding: 0.45rem 0.95rem;
    transition: background-color 0.12s, border-color 0.12s, color 0.12s, box-shadow 0.12s;
}

.btn-sm {
    padding: 0.3rem 0.65rem;
    font-size: 0.825rem;
}

.btn-primary {
    background-color: var(--pd-navy-800);
    border-color: var(--pd-navy-800);
}

.btn-primary:hover,
.btn-primary:focus-visible {
    background-color: var(--pd-navy-900);
    border-color: var(--pd-navy-900);
}

.btn-outline-primary {
    color: var(--pd-navy-800);
    border-color: var(--pd-navy-800);
}

.btn-outline-primary:hover {
    background-color: var(--pd-navy-800);
    border-color: var(--pd-navy-800);
    color: #fff;
}

.btn-outline-secondary {
    color: var(--pd-text-muted);
    border-color: var(--pd-border-strong);
}

.btn-outline-secondary:hover {
    background-color: var(--pd-text);
    border-color: var(--pd-text);
    color: #fff;
}

.btn-link {
    color: var(--pd-text-muted);
    text-decoration: none;
}

.btn-link:hover {
    color: var(--pd-text);
}

/* ─── Forms ─────────────────────────────────────────────────────────────── */

.form-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--pd-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.4rem;
}

.form-control, .form-select {
    border-color: var(--pd-border-strong);
    border-radius: var(--pd-radius-sm);
}

.form-control:focus, .form-select:focus {
    border-color: var(--pd-navy-700);
    box-shadow: 0 0 0 0.18rem rgba(29, 56, 102, 0.12);
}

.form-text {
    color: var(--pd-text-muted);
}

/* ─── Badges ────────────────────────────────────────────────────────────── */

.badge {
    font-weight: 600;
    letter-spacing: 0.01em;
    border-radius: var(--pd-radius-sm);
    padding: 0.32em 0.55em;
}

.badge.bg-primary { background-color: var(--pd-navy-800) !important; }
.badge.bg-secondary { background-color: var(--pd-text-muted) !important; }
.badge.bg-success { background-color: var(--pd-success) !important; }
.badge.bg-danger { background-color: var(--pd-danger) !important; }
.badge.bg-warning { background-color: var(--pd-warning) !important; }
.badge.bg-info { background-color: var(--pd-info) !important; }

/* ─── Alerts ────────────────────────────────────────────────────────────── */

.alert {
    border-radius: var(--pd-radius);
    border-width: 1px;
    padding: 0.85rem 1rem;
}

/* ─── List groups ───────────────────────────────────────────────────────── */

.list-group-item {
    border-color: var(--pd-border);
    padding: 0.7rem 1rem;
}

.list-group-flush > .list-group-item:last-child {
    border-bottom: 0;
}

/* ─── Utility refinements ───────────────────────────────────────────────── */

hr {
    border-color: var(--pd-border);
    opacity: 1;
}

.bg-light {
    background: #fafbfd !important;
}

.text-dark {
    color: var(--pd-text) !important;
}

/* Subtle muted helper used in cross-period comparison highlights */
.bg-success-subtle { background-color: #ecfdf5 !important; }
.bg-info-subtle { background-color: #eff6ff !important; }
.bg-warning-subtle { background-color: #fffbeb !important; }
.bg-danger-subtle { background-color: #fef2f2 !important; }

/* Slim scrollbars inside scrollable cards */
.list-group-flush[style*="overflow-y"]::-webkit-scrollbar { width: 6px; }
.list-group-flush[style*="overflow-y"]::-webkit-scrollbar-thumb {
    background: var(--pd-border-strong);
    border-radius: 3px;
}

/* ─── User area in navbar ───────────────────────────────────────────────── */

.app-user-area {
    display: inline-flex;
    align-items: center;
    margin-left: 0.5rem;
}

.app-user-link {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    padding: 0.35rem 0.6rem;
    border-radius: var(--pd-radius-sm);
    transition: background 0.12s;
}

.app-user-link:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
    text-decoration: none;
}

.app-user-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--pd-navy-700);
    color: #fff;
    font-weight: 600;
    font-size: 0.85rem;
}

.app-user-name {
    font-size: 0.875rem;
    font-weight: 500;
}

/* ─── Login page ────────────────────────────────────────────────────────── */

.login-page {
    background: linear-gradient(160deg, var(--pd-navy-900) 0%, var(--pd-navy-700) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
}

.login-card {
    background: var(--pd-surface);
    border-radius: var(--pd-radius);
    box-shadow: var(--pd-shadow-lg);
    padding: 2.25rem 2.25rem;
    width: 100%;
    max-width: 400px;
}

.login-brand {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1.5rem;
}

.login-brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--pd-accent) 0%, #b8961f 100%);
    color: var(--pd-navy-900);
    font-weight: 800;
    font-size: 0.9rem;
}

.login-brand-name {
    font-weight: 700;
    color: var(--pd-text);
    font-size: 1rem;
}

.login-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    letter-spacing: -0.01em;
}