/* ============================================================================
   API Hub — global stylesheet
   Modern, professional theme. Inter font, indigo accent, refined components.
   ============================================================================ */

:root {
    --color-bg:           #f8fafc;
    --color-surface:      #ffffff;
    --color-border:       #e2e8f0;
    --color-border-soft:  #f1f5f9;
    --color-text:         #0f172a;
    --color-text-soft:    #475569;
    --color-text-muted:   #94a3b8;

    --color-primary:      #4f46e5;
    --color-primary-dark: #4338ca;
    --color-primary-soft: #eef2ff;

    --color-success:      #16a34a;
    --color-success-soft: #dcfce7;
    --color-warning:      #d97706;
    --color-warning-soft: #fef3c7;
    --color-danger:       #dc2626;
    --color-danger-soft:  #fee2e2;
    --color-info:         #0891b2;
    --color-info-soft:    #cffafe;

    --radius-sm: 6px;
    --radius:    8px;
    --radius-lg: 12px;

    --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.04);
    --shadow:    0 1px 3px 0 rgba(15, 23, 42, 0.06), 0 1px 2px -1px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.05);

    --transition: 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- base ---------- */
body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, Tahoma, sans-serif;
    -webkit-font-smoothing: antialiased;
    font-feature-settings: 'cv11', 'ss01';
}

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

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); }

code, pre, .font-monospace { font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace; }

/* ---------- navbar ---------- */
.navbar {
    background: var(--color-text) !important;
    box-shadow: var(--shadow);
    padding-top: 0.6rem;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.navbar-brand {
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.navbar-brand .brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    border-radius: var(--radius-sm);
    color: white;
    font-size: 0.95rem;
}
.navbar-brand .brand-text { color: white; }
.navbar-brand .brand-tag {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-left: 0.25rem;
}
.navbar-dark .navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.7) !important;
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 0.95rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}
.navbar-dark .navbar-nav .nav-link:hover {
    color: white !important;
    background: rgba(255, 255, 255, 0.08);
}
.navbar-dark .navbar-nav .nav-link.active {
    color: white !important;
    background: rgba(255, 255, 255, 0.1);
}

/* ---------- cards ---------- */
.card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    background: var(--color-surface);
    transition: box-shadow var(--transition), border-color var(--transition);
}
.card:hover { box-shadow: var(--shadow); }
.card-header {
    background: transparent;
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 1.25rem;
    border-radius: var(--radius) var(--radius) 0 0 !important;
    font-weight: 600;
    color: var(--color-text);
}
.card-header .card-title { margin: 0; font-size: 0.95rem; }
.card-body { padding: 1.25rem; }

/* ---------- stat cards (dashboard) ---------- */
.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-text);
    position: relative;
    overflow: hidden;
    transition: box-shadow var(--transition), transform var(--transition);
}
.stat-card:hover {
    box-shadow: var(--shadow);
}
.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--color-primary);
}
.stat-card.stat-primary::before { background: var(--color-primary); }
.stat-card.stat-success::before { background: var(--color-success); }
.stat-card.stat-warning::before { background: var(--color-warning); }
.stat-card.stat-info::before    { background: var(--color-info); }

.stat-card .stat-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}
.stat-card .stat-number {
    font-size: 1.875rem;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
}
.stat-card .stat-icon {
    position: absolute;
    top: 1.25rem;
    right: 1.5rem;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    background: var(--color-primary-soft);
    color: var(--color-primary);
    opacity: 1;
}
.stat-card.stat-success .stat-icon { background: var(--color-success-soft); color: var(--color-success); }
.stat-card.stat-warning .stat-icon { background: var(--color-warning-soft); color: var(--color-warning); }
.stat-card.stat-info .stat-icon    { background: var(--color-info-soft);    color: var(--color-info); }

/* ---------- tables ---------- */
.table {
    background: var(--color-surface);
    margin-bottom: 0;
    color: var(--color-text);
    --bs-table-color: var(--color-text);
    --bs-table-bg: var(--color-surface);
    --bs-table-border-color: var(--color-border-soft);
    --bs-table-hover-bg: var(--color-bg);
    --bs-table-striped-bg: var(--color-border-soft);
}
.table thead th {
    background-color: var(--color-bg);
    color: var(--color-text-soft);
    border: none;
    border-bottom: 1px solid var(--color-border);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.7rem;
    letter-spacing: 0.05em;
    padding: 0.75rem 1rem;
}
.table tbody td {
    padding: 0.85rem 1rem;
    border-color: var(--color-border-soft);
    vertical-align: middle;
}
.table tbody tr:hover { background-color: var(--color-bg); }

/* ---------- buttons ---------- */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 500;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    transition: all var(--transition);
    box-shadow: none;
    border: 1px solid transparent;
}
.btn:hover { box-shadow: none; transform: none; }
.btn-sm { padding: 0.3rem 0.7rem; font-size: 0.8rem; }
.btn-lg { padding: 0.7rem 1.3rem; font-size: 1rem; }

.btn-primary {
    background: var(--color-primary);
    border-color: var(--color-primary);
}
.btn-primary:hover, .btn-primary:focus {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}
.btn-outline-primary { color: var(--color-primary); border-color: var(--color-primary); background: transparent; }
.btn-outline-primary:hover { background: var(--color-primary); color: white; }
.btn-outline-secondary { color: var(--color-text-soft); border-color: var(--color-border); background: transparent; }
.btn-outline-secondary:hover { background: var(--color-bg); color: var(--color-text); border-color: var(--color-border); }

/* ---------- forms ---------- */
.form-control, .form-select {
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    padding: 0.55rem 0.85rem;
    font-size: 0.9rem;
    color: var(--color-text);
    background-color: var(--color-surface);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus, .form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-soft);
    outline: none;
}
.form-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-soft);
    margin-bottom: 0.4rem;
}
.input-group-text {
    background: var(--color-bg);
    border-color: var(--color-border);
    color: var(--color-text-soft);
    font-size: 0.9rem;
}

/* ---------- badges ---------- */
.badge {
    font-weight: 500;
    font-size: 0.7rem;
    padding: 0.3rem 0.55rem;
    border-radius: 4px;
    letter-spacing: 0.01em;
}
.bg-success { background-color: var(--color-success) !important; }
.bg-warning { background-color: var(--color-warning) !important; }
.bg-danger  { background-color: var(--color-danger)  !important; }
.bg-info    { background-color: var(--color-info)    !important; }
.bg-primary { background-color: var(--color-primary) !important; }

/* ---------- alerts ---------- */
.alert {
    border: 1px solid;
    border-radius: var(--radius);
    padding: 0.85rem 1rem;
    font-size: 0.9rem;
}
.alert-info    { background: var(--color-info-soft);    border-color: #a5f3fc; color: #155e75; }
.alert-success { background: var(--color-success-soft); border-color: #bbf7d0; color: #166534; }
.alert-warning { background: var(--color-warning-soft); border-color: #fde68a; color: #92400e; }
.alert-danger  { background: var(--color-danger-soft);  border-color: #fecaca; color: #991b1b; }
.alert-light   { background: var(--color-bg);           border-color: var(--color-border); color: var(--color-text-soft); }

/* ---------- modals ---------- */
.modal-content {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}
.modal-header {
    border-bottom: 1px solid var(--color-border);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    padding: 1rem 1.25rem;
}
.modal-header.bg-primary,
.modal-header.bg-success,
.modal-header.bg-info,
.modal-header.bg-warning,
.modal-header.bg-danger,
.modal-header.bg-dark { border-bottom: none; }
.modal-title { font-weight: 600; font-size: 1.05rem; }
.modal-footer { border-top: 1px solid var(--color-border); padding: 1rem 1.25rem; }

/* ---------- dropdowns ---------- */
.dropdown-menu {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 0.4rem;
    z-index: 1055 !important;
    max-height: 80vh;
    overflow-y: auto;
}
.dropdown-item {
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.7rem;
    font-size: 0.875rem;
    color: var(--color-text);
}
.dropdown-item:hover { background: var(--color-bg); color: var(--color-text); }
.dropdown-divider { border-color: var(--color-border); margin: 0.25rem 0; }

/* ---------- pagination ---------- */
.pagination { gap: 0.25rem; }
.page-link {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm) !important;
    color: var(--color-text-soft);
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
}
.page-link:hover { background: var(--color-bg); color: var(--color-text); }
.page-item.active .page-link { background: var(--color-primary); border-color: var(--color-primary); color: white; }

/* ---------- credit balance ---------- */
.credit-balance { font-size: 1.5rem; font-weight: 700; }
.text-success { color: var(--color-success) !important; }
.text-danger  { color: var(--color-danger)  !important; }
.text-warning { color: var(--color-warning) !important; }
.text-info    { color: var(--color-info)    !important; }
.text-primary { color: var(--color-primary) !important; }
.text-muted   { color: var(--color-text-muted) !important; }

/* ---------- api key code blocks ---------- */
.api-key, code {
    font-family: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
    background-color: var(--color-bg);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--color-border);
    word-break: break-all;
    font-size: 0.82rem;
    color: var(--color-text-soft);
}
.text-truncate-custom {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 200px;
    display: inline-block;
    vertical-align: middle;
}

/* ---------- login page ---------- */
.login-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(at 20% 20%, rgba(99, 102, 241, 0.12) 0px, transparent 50%),
        radial-gradient(at 80% 80%, rgba(14, 165, 233, 0.10) 0px, transparent 50%),
        linear-gradient(135deg, #f8fafc 0%, #eef2ff 100%);
    padding: 2rem 1rem;
}
.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 2.25rem;
}
.login-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    margin-bottom: 1.75rem;
}
.login-brand .brand-mark-lg {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.4rem;
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
    margin-bottom: 1rem;
}
.login-brand h1 {
    font-size: 1.4rem;
    margin: 0;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.login-brand p {
    color: var(--color-text-muted);
    margin: 0.35rem 0 0 0;
    font-size: 0.9rem;
}
.login-footer {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.8rem;
    margin-top: 1.5rem;
}

/* ---------- defensive ---------- */
.card, .card-body, .table-responsive { overflow: visible !important; }
.modal-backdrop { z-index: 1040 !important; }
.modal { z-index: 1050 !important; }
.modal-dialog { z-index: 1051; }
body.modal-open { overflow: hidden; }
body.modal-open .main-content { filter: none; }

/* ---------- chart container ---------- */
.chart-container {
    position: relative;
    height: 300px;
    width: 100%;
}

/* ---------- footer ---------- */
.app-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 3rem 0 1.5rem 0;
    padding: 1.25rem 0.5rem;
    border-top: 1px solid var(--color-border);
    font-size: 0.85rem;
    color: var(--color-text-soft);
}
.app-footer strong { color: var(--color-text); margin-right: 0.5rem; }
.footer-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    background: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    border-radius: 5px;
    color: white;
    font-size: 0.65rem;
    margin-right: 0.5rem;
    vertical-align: middle;
}

/* ---------- responsive ---------- */

/* Tablet and below */
@media (max-width: 991.98px) {
    .container-fluid { padding-left: 0.75rem; padding-right: 0.75rem; }

    /* Page-header rows: title + button-toolbar should wrap cleanly */
    .d-flex.justify-content-between.flex-wrap.flex-md-nowrap {
        gap: 0.5rem;
    }
    .btn-toolbar { width: 100%; }
}

/* Phone */
@media (max-width: 767.98px) {
    body { font-size: 0.92rem; }

    /* ---------- navbar ---------- */
    .navbar { padding: 0.5rem 0.25rem; }
    .navbar-brand { font-size: 1rem; gap: 0.4rem; }
    .navbar-brand .brand-mark { width: 28px; height: 28px; font-size: 0.85rem; }
    .navbar-brand .brand-tag  { display: none !important; }
    .navbar-toggler { padding: 0.25rem 0.5rem; font-size: 0.95rem; }
    /* When collapsed menu is open, give it some breathing room */
    .navbar-collapse {
        margin-top: 0.5rem;
        padding-top: 0.5rem;
        border-top: 1px solid rgba(255, 255, 255, 0.08);
    }
    .navbar-dark .navbar-nav .nav-link {
        padding: 0.6rem 0.75rem;
        border-radius: var(--radius-sm);
    }

    /* ---------- headings ---------- */
    h1.h2, .h2 { font-size: 1.35rem; }
    h1, h2 { letter-spacing: -0.02em; }

    /* ---------- cards ---------- */
    .card-header { padding: 0.85rem 1rem; }
    .card-body { padding: 1rem; }
    .card-header .card-title { font-size: 0.9rem; }

    /* ---------- stat cards ---------- */
    .stat-card {
        padding: 1rem 1.1rem;
        margin-bottom: 0;
    }
    .stat-card .stat-number { font-size: 1.5rem; }
    .stat-card .stat-icon {
        width: 32px;
        height: 32px;
        top: 0.85rem;
        right: 1rem;
        font-size: 0.9rem;
    }

    /* ---------- tables ---------- */
    /* Allow tables to scroll horizontally without breaking their container */
    .table-responsive {
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
    }
    .table thead th { padding: 0.5rem 0.7rem; font-size: 0.65rem; }
    .table tbody td { padding: 0.65rem 0.7rem; font-size: 0.85rem; }
    .credit-balance { font-size: 1.1rem; }
    .text-truncate-custom { max-width: 130px; font-size: 0.75rem; }

    /* Modal: nearly full-screen on phone */
    .modal-dialog {
        margin: 0.5rem;
        max-width: calc(100vw - 1rem);
    }
    .modal-dialog.modal-lg, .modal-dialog.modal-xl {
        max-width: calc(100vw - 1rem);
    }
    .modal-body { padding: 1rem; }
    .modal-footer { padding: 0.75rem 1rem; flex-wrap: wrap; gap: 0.4rem; }
    .modal-footer .me-auto { margin-right: auto !important; flex: 0 0 100%; order: 99; }

    /* ---------- forms ---------- */
    .form-control, .form-select {
        font-size: 16px;   /* prevents iOS from zooming on focus */
        padding: 0.6rem 0.85rem;
    }
    .form-control-sm, .form-select-sm { font-size: 14px; }
    .input-group-text { font-size: 0.85rem; padding: 0.5rem 0.7rem; }

    /* ---------- buttons ---------- */
    .btn { padding: 0.55rem 0.95rem; font-size: 0.9rem; }
    .btn-sm { padding: 0.4rem 0.7rem; font-size: 0.8rem; }
    .btn-lg { padding: 0.65rem 1.1rem; font-size: 0.95rem; }
    /* Stacked button groups should be full-width on phone */
    .d-grid .btn { width: 100%; }

    /* ---------- dropdowns ---------- */
    .dropdown-menu {
        max-width: calc(100vw - 1.5rem);
        font-size: 0.9rem;
    }
    .dropdown-menu-end { right: 0; left: auto; }

    /* ---------- login page ---------- */
    .login-shell { padding: 1rem 0.75rem; min-height: 90vh; }
    .login-card { padding: 1.5rem; max-width: 100%; }
    .login-brand .brand-mark-lg { width: 48px; height: 48px; font-size: 1.2rem; }
    .login-brand h1 { font-size: 1.25rem; }

    /* ---------- footer ---------- */
    .app-footer {
        margin: 2rem 0 1rem 0;
        padding: 1rem 0.25rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    /* ---------- alerts ---------- */
    .alert { padding: 0.7rem 0.85rem; font-size: 0.85rem; }

    /* ---------- pagination ---------- */
    .pagination { flex-wrap: wrap; justify-content: center; }
    .page-link { padding: 0.35rem 0.6rem; font-size: 0.8rem; }

    /* ---------- common admin filter rows ----------
       Patterns like "row g-2 mb-3 align-items-end" with multiple form fields
       should always stack on phone. The g-2 gap stays. */
    .row.g-2 > [class*="col-md-"] { margin-bottom: 0.35rem; }
}

/* ---------- admin/clients page tweaks ---------- */
.clients-table .actions-col { width: 130px; }

@media (max-width: 767.98px) {
    .clients-table .actions-col { width: 60px; }
    .clients-actions-btn { padding: 0.35rem 0.55rem; }
    .clients-table .text-truncate-custom {
        max-width: 110px;
        font-size: 0.7rem;
    }
    .clients-table code { padding: 0.15rem 0.3rem; }
    .clients-table .badge { font-size: 0.65rem; padding: 0.25rem 0.4rem; }
    .clients-table thead th { white-space: nowrap; }
}

/* Small phones */
@media (max-width: 419.98px) {
    .navbar-brand { font-size: 0.95rem; }
    .stat-card .stat-number { font-size: 1.35rem; }
    .text-truncate-custom { max-width: 100px; }
    .clients-table .text-truncate-custom { max-width: 85px; }
    .login-card { padding: 1.25rem; }
    .modal-footer .btn { flex: 1; }
}