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

body {
    font-family: "Inter", system-ui, -apple-system, sans-serif;
    background: #0f0f0f;
    color: #e4e4e7;
    line-height: 1.6;
}

/* --- Nav --- */

nav {
    background: #18181b;
    padding: 0.75rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #27272a;
}

nav .logo {
    color: #a78bfa;
    font-size: 1.4rem;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: 0.5px;
}

.nav-links {
    display: flex;
    gap: 1.25rem;
}

.nav-links a {
    color: #a1a1aa;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: #e4e4e7;
}

/* --- Main content --- */

main {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

h1 {
    font-size: 1.8rem;
    color: #fafafa;
    margin-bottom: 1.25rem;
}

h2 {
    font-size: 1.1rem;
    color: #a1a1aa;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

p {
    margin-bottom: 0.75rem;
}

a {
    color: #a78bfa;
}

a:hover {
    color: #c4b5fd;
}

/* --- Buttons --- */

.btn {
    display: inline-block;
    padding: 0.6rem 1.4rem;
    background: #7c3aed;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    margin-top: 0.5rem;
    margin-right: 0.5rem;
}

.btn:hover {
    background: #6d28d9;
    transform: translateY(-1px);
}

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

.btn-secondary {
    background: #27272a;
    color: #a1a1aa;
}

.btn-secondary:hover {
    background: #3f3f46;
    color: #e4e4e7;
}

.btn-deposit {
    background: #059669;
}

.btn-deposit:hover {
    background: #047857;
}

.btn-withdraw {
    background: #dc2626;
}

.btn-withdraw:hover {
    background: #b91c1c;
}

.btn-interest {
    background: #d97706;
}

.btn-interest:hover {
    background: #b45309;
}

/* --- Cards (dashboard) --- */

.account-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.card {
    background: #18181b;
    border: 1px solid #27272a;
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
}

.card .amount {
    font-size: 2rem;
    font-weight: 700;
    color: #a78bfa;
    margin-bottom: 0.25rem;
}

.card .label {
    font-size: 0.85rem;
    color: #71717a;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --- Transactions table --- */

.transactions-table {
    width: 100%;
    border-collapse: collapse;
    background: #18181b;
    border: 1px solid #27272a;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.transactions-table thead {
    background: #27272a;
}

.transactions-table th {
    padding: 0.75rem 1rem;
    text-align: left;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #a1a1aa;
    font-weight: 600;
}

.transactions-table td {
    padding: 0.75rem 1rem;
    border-top: 1px solid #27272a;
    font-size: 0.95rem;
    color: #d4d4d8;
}

.transactions-table tbody tr:hover {
    background: #1f1f23;
}

.positive {
    color: #34d399;
    font-weight: 600;
}

.negative {
    color: #f87171;
    font-weight: 600;
}

/* --- Forms (login, admin) --- */

form {
    max-width: 400px;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.3rem;
    color: #a1a1aa;
    font-size: 0.9rem;
}

input[type="text"],
input[type="password"],
input[type="number"] {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid #3f3f46;
    border-radius: 8px;
    font-size: 0.95rem;
    margin-bottom: 1rem;
    transition: border-color 0.2s;
    background: #27272a;
    color: #e4e4e7;
}

input:focus {
    outline: none;
    border-color: #7c3aed;
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.2);
}

input::placeholder {
    color: #71717a;
}

form button {
    margin-top: 0.25rem;
}

.btn-login {
    width: 100%;
    padding: 0.75rem;
    font-size: 1.1rem;
}

.login-container {
    text-align: center;
    padding: 3rem 1rem;
    max-width: 400px;
    margin: 0 auto;
}

.login-container h1 {
    margin-bottom: 1.5rem;
}

.btn-google {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    width: 100%;
    max-width: 300px;
    padding: 0.85rem 1.5rem;
    background: #fff;
    color: #3c4043;
    font-size: 1.05rem;
    font-weight: 500;
    border-radius: 8px;
    text-decoration: none;
    transition: background 0.2s, box-shadow 0.2s;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.btn-google:hover {
    background: #f7f8f8;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.4);
    color: #3c4043;
}

.google-icon {
    flex-shrink: 0;
}

.kid-email {
    color: #71717a;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.error {
    color: #f87171;
    background: #1c1917;
    border: 1px solid #7f1d1d;
    padding: 0.6rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.success {
    color: #34d399;
    background: #022c22;
    border: 1px solid #065f46;
    padding: 0.6rem 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

/* --- Admin --- */

.admin-card {
    background: #18181b;
    border: 1px solid #27272a;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.admin-card h2 {
    font-size: 1.3rem;
    color: #fafafa;
    text-transform: none;
    margin-bottom: 0.5rem;
}

.transactions-table tfoot td {
    border-top: 2px solid #3f3f46;
    padding: 0.75rem 1rem;
}

.total-label {
    text-align: right;
    font-weight: 600;
    color: #a1a1aa;
    text-transform: uppercase;
    font-size: 0.85rem;
}

.total-amount {
    font-weight: 700;
    color: #a78bfa;
    font-size: 1.1rem;
}

.admin-card h3 {
    font-size: 1rem;
    color: #a1a1aa;
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.admin-actions {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.inline-form {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.inline-form input[type="number"],
.inline-form input[type="text"] {
    width: auto;
    flex: 1;
    min-width: 100px;
    margin-bottom: 0;
}

.inline-form button {
    margin-top: 0;
    white-space: nowrap;
}

/* --- Home page --- */

.hero {
    text-align: center;
    padding: 4rem 1rem;
}

.hero h1 {
    font-size: 2.4rem;
    margin-bottom: 0.75rem;
    color: #fafafa;
}

.hero p {
    font-size: 1.15rem;
    color: #a1a1aa;
    max-width: 480px;
    margin: 0 auto 1.5rem;
}

.hero .btn {
    font-size: 1.1rem;
    padding: 0.75rem 2rem;
}

/* --- Add kid form --- */

.add-kid-card {
    border-top: 3px solid #7c3aed;
}

.add-kid-card form {
    max-width: 100%;
}

.form-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.25rem;
}

.form-group {
    flex: 1;
}

.form-group input {
    width: 100%;
}

/* --- Edit/delete section --- */

.edit-section {
    margin-top: 1.25rem;
    border-top: 1px solid #27272a;
    padding-top: 1rem;
}

.balance-display {
    font-size: 1.2rem;
    margin-bottom: 1.25rem;
}

.balance-display strong {
    color: #a78bfa;
    font-size: 1.4rem;
}

.edit-section summary {
    cursor: pointer;
    color: #a1a1aa;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.edit-section summary:hover {
    color: #e4e4e7;
}

.edit-form {
    max-width: 100%;
    margin-bottom: 1rem;
}

.delete-form {
    max-width: 100%;
}

/* --- Loan admin pages --- */

body.loan-page main {
    max-width: 1100px;
}

.loan-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.25rem;
}

.loan-header h1 {
    margin-bottom: 0;
}

.loan-badge {
    background: #065f46;
    color: #6ee7b7;
    border: 1px solid #047857;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
}

.loan-controls {
    display: flex;
    align-items: flex-end;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.loan-controls .form-group {
    margin-bottom: 0;
}

.loan-controls label {
    display: block;
    font-size: 0.85rem;
    color: #a1a1aa;
    margin-bottom: 0.35rem;
}

.loan-controls input[type="date"] {
    margin-bottom: 0;
}

.loan-controls .btn {
    margin-top: 0;
}

.loan-summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.loan-stats {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.loan-stat dt {
    font-size: 0.8rem;
    color: #a1a1aa;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    margin-bottom: 0.15rem;
}

.loan-stat dd {
    font-size: 1.05rem;
    color: #fafafa;
    font-weight: 600;
}

.loan-note {
    margin-top: 1rem;
    font-size: 0.85rem;
    color: #71717a;
}

.loan-subtitle {
    margin-bottom: 1rem;
    color: #d4d4d8;
}

.loan-subtitle strong {
    color: #a78bfa;
}

.loan-callout {
    background: #18181b;
    border: 1px solid #27272a;
    border-radius: 8px;
    padding: 0.85rem 1rem;
    margin-bottom: 1.5rem;
    color: #d4d4d8;
}

.loan-callout strong {
    color: #a78bfa;
}

.loan-section-title {
    font-size: 1rem;
    color: #a1a1aa;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
}

.table-scroll {
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

.loan-nav-links {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.loan-nav-links .btn {
    margin-top: 0;
    text-decoration: none;
    display: inline-block;
}