/* ==========================================================
   Novabank — core design tokens & shared components
   ========================================================== */

:root {
    --nb-navy-950: #060b18;
    --nb-navy-900: #0b1220;
    --nb-navy-800: #101a2e;
    --nb-navy-700: #16223b;
    --nb-navy-600: #1e2d4d;
    --nb-blue-500: #2f6fed;
    --nb-blue-400: #5b8bf7;
    --nb-teal-400: #17c9b2;
    --nb-gold-400: #e8b84b;
    --nb-red-400: #f0556b;
    --nb-green-400: #22c58b;

    --nb-bg: #f5f7fb;
    --nb-surface: #ffffff;
    --nb-surface-alt: #eef1f8;
    --nb-border: #e3e7f0;
    --nb-text: #101a2e;
    --nb-text-muted: #5b6478;
    --nb-shadow: 0 10px 30px -12px rgba(16, 26, 46, 0.15);
    --nb-shadow-sm: 0 4px 14px -6px rgba(16, 26, 46, 0.12);
    --nb-radius: 16px;
    --nb-radius-sm: 10px;
    --nb-transition: all 0.2s ease;

    --nb-gradient-brand: linear-gradient(135deg, var(--nb-blue-500) 0%, var(--nb-teal-400) 100%);
    --nb-gradient-dark: linear-gradient(160deg, var(--nb-navy-900) 0%, var(--nb-navy-700) 100%);
}

[data-bs-theme="dark"] {
    --nb-bg: #070d1a;
    --nb-surface: #101a2e;
    --nb-surface-alt: #16223b;
    --nb-border: #22304d;
    --nb-text: #eef1f8;
    --nb-text-muted: #9aa5bd;
    --nb-shadow: 0 10px 30px -12px rgba(0, 0, 0, 0.5);
    --nb-shadow-sm: 0 4px 14px -6px rgba(0, 0, 0, 0.4);
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--nb-bg);
    color: var(--nb-text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    transition: background-color 0.25s ease, color 0.25s ease;
}

h1, h2, h3, h4, h5, h6 {
    letter-spacing: -0.02em;
    font-weight: 700;
}

a {
    text-decoration: none;
}

.text-muted-nb {
    color: var(--nb-text-muted) !important;
}

.bg-brand-gradient {
    background: var(--nb-gradient-brand);
}

.bg-dark-gradient {
    background: var(--nb-gradient-dark);
}

/* ---------- Cards ---------- */
.nb-card {
    background: var(--nb-surface);
    border: 1px solid var(--nb-border);
    border-radius: var(--nb-radius);
    box-shadow: var(--nb-shadow-sm);
    transition: var(--nb-transition);
}

.nb-card:hover {
    box-shadow: var(--nb-shadow);
}

.nb-card-flat {
    background: var(--nb-surface-alt);
    border-radius: var(--nb-radius-sm);
}

/* ---------- Buttons ---------- */
.btn-brand {
    background: var(--nb-gradient-brand);
    border: none;
    color: #fff;
    font-weight: 600;
    box-shadow: 0 8px 20px -8px rgba(47, 111, 237, 0.55);
    transition: var(--nb-transition);
}

.btn-brand:hover {
    filter: brightness(1.08);
    transform: translateY(-1px);
    color: #fff;
}

.btn-brand:active {
    transform: translateY(0);
}

.btn-outline-brand {
    border: 1.5px solid var(--nb-blue-500);
    color: var(--nb-blue-500);
    font-weight: 600;
    background: transparent;
}

.btn-outline-brand:hover {
    background: var(--nb-blue-500);
    color: #fff;
}

.btn-ghost {
    background: var(--nb-surface-alt);
    border: 1px solid var(--nb-border);
    color: var(--nb-text);
}

.btn-ghost:hover {
    background: var(--nb-border);
    color: var(--nb-text);
}

/* ---------- Forms ---------- */
.form-control, .form-select {
    background-color: var(--nb-surface);
    border: 1.5px solid var(--nb-border);
    color: var(--nb-text);
    border-radius: var(--nb-radius-sm);
    padding: 0.65rem 0.9rem;
    font-size: 0.95rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--nb-blue-500);
    box-shadow: 0 0 0 4px rgba(47, 111, 237, 0.15);
    background-color: var(--nb-surface);
    color: var(--nb-text);
}

.form-label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--nb-text-muted);
    margin-bottom: 0.4rem;
}

.input-group-text {
    background-color: var(--nb-surface-alt);
    border: 1.5px solid var(--nb-border);
    color: var(--nb-text-muted);
}

/* ---------- Badges / status pills ---------- */
.nb-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.3rem 0.7rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.nb-pill-success { background: rgba(34, 197, 139, 0.12); color: var(--nb-green-400); }
.nb-pill-danger { background: rgba(240, 85, 107, 0.12); color: var(--nb-red-400); }
.nb-pill-warning { background: rgba(232, 184, 75, 0.15); color: var(--nb-gold-400); }
.nb-pill-info { background: rgba(47, 111, 237, 0.12); color: var(--nb-blue-500); }
.nb-pill-neutral { background: var(--nb-surface-alt); color: var(--nb-text-muted); }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--nb-border); border-radius: 8px; }

/* ---------- Animations ---------- */
@keyframes nb-fade-up {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.nb-animate-in {
    animation: nb-fade-up 0.45s ease both;
}

.nb-delay-1 { animation-delay: 0.05s; }
.nb-delay-2 { animation-delay: 0.1s; }
.nb-delay-3 { animation-delay: 0.15s; }
.nb-delay-4 { animation-delay: 0.2s; }

@keyframes nb-spin-slow {
    to { transform: rotate(360deg); }
}

/* ---------- Utilities ---------- */
.nb-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--nb-gradient-brand);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 0.9rem;
}

.nb-icon-box {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.nb-skeleton {
    background: linear-gradient(90deg, var(--nb-surface-alt) 25%, var(--nb-border) 37%, var(--nb-surface-alt) 63%);
    background-size: 400% 100%;
    animation: nb-skeleton-loading 1.4s ease infinite;
    border-radius: 8px;
}

@keyframes nb-skeleton-loading {
    0% { background-position: 100% 50%; }
    100% { background-position: 0 50%; }
}

/* ---------- Theme toggle ---------- */
.theme-toggle {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--nb-border);
    background: var(--nb-surface-alt);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--nb-transition);
}

.theme-toggle:hover {
    background: var(--nb-border);
}