/* ═══════════════════════════════════════════════════════════════════
   Lightning Bank — MicroPayment Design System
   ═══════════════════════════════════════════════════════════════════ */

:root {
    --bg-primary: #0a0a1a;
    --bg-secondary: #111128;
    --bg-card: #16163a;
    --bg-card-hover: #1c1c4a;
    --bg-input: #0d0d25;
    --border: #2a2a5a;
    --border-focus: #6c63ff;
    --text-primary: #e8e8f0;
    --text-secondary: #9090b0;
    --text-muted: #606080;
    --accent: #6c63ff;
    --accent-hover: #5a52d5;
    --accent-glow: rgba(108, 99, 255, 0.3);
    --success: #00c853;
    --success-bg: rgba(0, 200, 83, 0.1);
    --error: #ff5252;
    --error-bg: rgba(255, 82, 82, 0.1);
    --warning: #ffab40;
    --warning-bg: rgba(255, 171, 64, 0.1);
    --info: #40c4ff;
    --info-bg: rgba(64, 196, 255, 0.1);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --transition: 0.2s ease;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }

/* ─── Navbar ──────────────────────────────────────────────────── */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    height: 64px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
}

.nav-brand a {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}
.logo-icon { font-size: 1.5rem; }
.logo-accent { color: var(--accent); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-links a, .nav-dropdown-btn {
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition);
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.nav-links a:hover, .nav-links a.active, .nav-dropdown-btn:hover {
    color: var(--text-primary);
    background: rgba(108, 99, 255, 0.1);
}

.nav-logout {
    color: var(--error) !important;
    margin-left: 8px;
}

.nav-dropdown {
    position: relative;
}

.nav-dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    min-width: 180px;
    box-shadow: var(--shadow-lg);
    z-index: 200;
    overflow: hidden;
}

.nav-dropdown:hover .nav-dropdown-menu { display: block; }

.nav-dropdown-menu a {
    display: block;
    padding: 10px 16px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.nav-dropdown-menu a:hover {
    background: rgba(108, 99, 255, 0.1);
    color: var(--text-primary);
}

/* ─── Container ───────────────────────────────────────────────── */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem;
}

/* ─── Flash Messages ──────────────────────────────────────────── */
.flash-messages { margin-bottom: 1.5rem; }

.flash {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 8px;
    border-left: 4px solid;
}

.flash-success { background: var(--success-bg); border-color: var(--success); color: var(--success); }
.flash-error   { background: var(--error-bg);   border-color: var(--error);   color: var(--error); }
.flash-info    { background: var(--info-bg);    border-color: var(--info);    color: var(--info); }
.flash-warning { background: var(--warning-bg); border-color: var(--warning); color: var(--warning); }

/* ─── Cards ───────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: border-color var(--transition);
}

.card:hover { border-color: var(--accent); }

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ─── Balance Card ────────────────────────────────────────────── */
.balance-card {
    background: linear-gradient(135deg, #1a1a4e 0%, #2d1b69 50%, #1a1a4e 100%);
    border: 1px solid rgba(108, 99, 255, 0.3);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
}

.balance-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(108, 99, 255, 0.05) 0%, transparent 60%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 1; }
}

.balance-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.balance-amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--text-primary);
    position: relative;
    z-index: 1;
}

.balance-bank-number {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* ─── Forms ───────────────────────────────────────────────────── */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

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

.form-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* ─── Buttons ─────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    border: none;
    transition: all var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}
.btn-primary:hover {
    background: var(--accent-hover);
    color: #fff;
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}
.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--text-primary);
}

.btn-success {
    background: var(--success);
    color: #000;
}
.btn-success:hover {
    background: #00b848;
    color: #000;
}

.btn-danger {
    background: var(--error);
    color: #fff;
}

.btn-block { width: 100%; }

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-group {
    display: flex;
    gap: 8px;
}

/* ─── Tables ──────────────────────────────────────────────────── */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

th {
    text-align: left;
    padding: 12px 16px;
    background: var(--bg-input);
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.75rem;
    border-bottom: 1px solid var(--border);
}

td {
    padding: 12px 16px;
    border-bottom: 1px solid rgba(42, 42, 90, 0.5);
    color: var(--text-primary);
}

tr:hover td { background: rgba(108, 99, 255, 0.03); }

/* ─── Tags / Badges ───────────────────────────────────────────── */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-sent     { background: var(--error-bg);   color: var(--error); }
.badge-received { background: var(--success-bg); color: var(--success); }
.badge-deposit  { background: var(--info-bg);    color: var(--info); }
.badge-withdraw { background: var(--warning-bg); color: var(--warning); }
.badge-qr       { background: rgba(108, 99, 255, 0.15); color: var(--accent); }
.badge-nfc      { background: rgba(0, 200, 83, 0.15);   color: var(--success); }

/* ─── Auth Pages ──────────────────────────────────────────────── */
.auth-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 64px);
    padding: 2rem;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
}

.auth-card .auth-logo {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.auth-card h1 {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.auth-card .auth-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ─── QR Code Display ─────────────────────────────────────────── */
.qr-display {
    text-align: center;
    padding: 2rem;
}

.qr-display img {
    max-width: 300px;
    border-radius: var(--radius);
    border: 2px solid var(--border);
    background: #fff;
    padding: 16px;
}

.qr-receiver-code {
    display: inline-block;
    margin-top: 1rem;
    padding: 8px 20px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 99px;
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--accent);
    letter-spacing: 1px;
}

/* ─── Stats Grid ──────────────────────────────────────────────── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    text-align: center;
}

.stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-value.positive { color: var(--success); }
.stat-value.negative { color: var(--error); }

/* ─── Scan Page ───────────────────────────────────────────────── */
.scan-area {
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    border: 3px dashed var(--border);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 4rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
}

.scan-area:hover {
    border-color: var(--accent);
    background: rgba(108, 99, 255, 0.05);
}

.scan-area.active {
    border-color: var(--success);
    background: rgba(0, 200, 83, 0.05);
}

/* ─── Two-Column Layout ──────────────────────────────────────── */
.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

/* ─── Empty State ─────────────────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.empty-state .icon { font-size: 3rem; margin-bottom: 1rem; }
.empty-state p { font-size: 0.95rem; }

/* ─── Page Header ─────────────────────────────────────────────── */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.page-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ─── Account Info ────────────────────────────────────────────── */
.info-row {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid rgba(42, 42, 90, 0.5);
}

.info-label { color: var(--text-muted); font-size: 0.85rem; }
.info-value { font-weight: 600; font-family: monospace; letter-spacing: 0.5px; }

.copy-btn {
    background: none;
    border: none;
    color: var(--accent);
    cursor: pointer;
    font-size: 0.8rem;
    margin-left: 8px;
}

.copy-btn:hover { text-decoration: underline; }

/* ─── Responsive ──────────────────────────────────────────────── */
@media (max-width: 768px) {
    .navbar { padding: 0 1rem; flex-wrap: wrap; height: auto; padding-top: 8px; padding-bottom: 8px; }
    .nav-links { flex-wrap: wrap; justify-content: center; }
    .container { padding: 1rem; }
    .two-col { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .balance-amount { font-size: 2.2rem; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .nav-links a { padding: 6px 8px; font-size: 0.8rem; }
}