/**
 * Bank Ledger Application Styles
 * Modern, responsive design for authentication and main application
 */

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --credit-color: #10b981;
    --debit-color: #ef4444;
    --background: #f8fafc;
    --card-background: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
}

/* Login Page Styles */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-card {
    background: var(--card-background);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 2.5rem;
    width: 100%;
    max-width: 450px;
}

.login-card h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    text-align: center;
    color: var(--primary-color);
}

.login-card .subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

.tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 2px solid var(--border-color);
}

.tab-button {
    flex: 1;
    padding: 0.75rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: -2px;
}

.tab-button:hover {
    color: var(--primary-color);
}

.tab-button.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

/* Main Application Styles */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.header h1 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.user-info {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.card {
    background: var(--card-background);
    border-radius: 12px;
    box-shadow: var(--shadow);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.card h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.balance-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    color: white;
    text-align: center;
}

.balance-card h2 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.balance-amount {
    font-size: 2rem;
    font-weight: bold;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    align-items: end;
}

.transaction-form .form-row {
    grid-template-columns: 1fr 2fr 1fr 1fr auto;
}

.filter-form .form-row {
    grid-template-columns: 1fr 1fr auto auto;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background-color: #475569;
    transform: translateY(-1px);
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Table */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background-color: var(--background);
}

th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

tbody tr:hover {
    background-color: var(--background);
}

.type-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.type-badge.credit {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--credit-color);
}

.type-badge.debit {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--debit-color);
}

.credit {
    color: var(--credit-color);
    font-weight: 500;
}

.debit {
    color: var(--debit-color);
    font-weight: 500;
}

/* Summary */
.summary-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.summary-item {
    background-color: var(--background);
    border-radius: 8px;
    padding: 1rem;
    border: 1px solid var(--border-color);
}

.summary-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.transaction-count {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.summary-details {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.95rem;
}

.summary-net {
    margin-top: 0.5rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

/* Messages */
.error-message {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.success-message {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem;
    font-style: italic;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .header {
        flex-direction: column;
        align-items: flex-start;
    }

    .transaction-form .form-row,
    .filter-form .form-row {
        grid-template-columns: 1fr;
    }

    .balance-amount {
        font-size: 2.5rem;
    }

    .summary-container {
        grid-template-columns: 1fr;
    }

    .login-card {
        padding: 1.5rem;
    }

    table {
        font-size: 0.875rem;
    }

    th, td {
        padding: 0.75rem 0.5rem;
    }
}

@media (max-width: 480px) {
    .login-card h1 {
        font-size: 1.5rem;
    }

    .balance-amount {
        font-size: 2rem;
    }

    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.95rem;
    }
}