/* BusinessZindagi AI Cash Book - Frontend Styles */
/* Mobile-first, clean, beginner-friendly */

:root {
    --bz-primary: #0d9488;
    --bz-primary-dark: #0f766e;
    --bz-income: #16a34a;
    --bz-income-bg: #dcfce7;
    --bz-expense: #dc2626;
    --bz-expense-bg: #fee2e2;
    --bz-balance: #2563eb;
    --bz-balance-bg: #dbeafe;
    --bz-cash: #7c3aed;
    --bz-cash-bg: #ede9fe;
    --bz-bg: #f8fafc;
    --bz-card: #ffffff;
    --bz-text: #0f172a;
    --bz-text-muted: #64748b;
    --bz-border: #e2e8f0;
    --bz-radius: 12px;
    --bz-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
    --bz-shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
}

.bz-cashbook-wrap {
    max-width: 640px;
    margin: 0 auto;
    padding: 16px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--bz-text);
    background: var(--bz-bg);
    min-height: 60vh;
    box-sizing: border-box;
}

.bz-cashbook-wrap *,
.bz-cashbook-wrap *::before,
.bz-cashbook-wrap *::after {
    box-sizing: border-box;
}

/* Header */
.bz-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.bz-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 4px 0;
    color: var(--bz-text);
}

.bz-subtitle {
    font-size: 0.875rem;
    color: var(--bz-text-muted);
    margin: 0;
}

.bz-date {
    font-size: 0.8rem;
    color: var(--bz-text-muted);
    background: var(--bz-card);
    padding: 6px 12px;
    border-radius: 20px;
    border: 1px solid var(--bz-border);
}

/* Summary Cards */
.bz-summary-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 20px;
}

.bz-card {
    background: var(--bz-card);
    border-radius: var(--bz-radius);
    padding: 16px;
    box-shadow: var(--bz-shadow);
    border: 1px solid var(--bz-border);
}

.bz-card-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--bz-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: 6px;
}

.bz-card-value {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.2;
}

.bz-card-income .bz-card-value { color: var(--bz-income); }
.bz-card-expense .bz-card-value { color: var(--bz-expense); }
.bz-card-balance .bz-card-value { color: var(--bz-balance); }
.bz-card-cash .bz-card-value { color: var(--bz-cash); }

.bz-card-income { border-left: 4px solid var(--bz-income); }
.bz-card-expense { border-left: 4px solid var(--bz-expense); }
.bz-card-balance { border-left: 4px solid var(--bz-balance); }
.bz-card-cash { border-left: 4px solid var(--bz-cash); }

/* Action Buttons */
.bz-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 24px;
}

.bz-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 20px;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--bz-radius);
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s, background 0.15s;
    text-decoration: none;
    line-height: 1;
}

.bz-btn:active {
    transform: scale(0.97);
}

.bz-btn-income {
    background: var(--bz-income);
    color: #fff;
    box-shadow: 0 4px 14px rgba(22, 163, 74, 0.35);
}

.bz-btn-income:hover {
    background: #15803d;
}

.bz-btn-expense {
    background: var(--bz-expense);
    color: #fff;
    box-shadow: 0 4px 14px rgba(220, 38, 38, 0.35);
}

.bz-btn-expense:hover {
    background: #b91c1c;
}

.bz-btn-primary {
    background: var(--bz-primary);
    color: #fff;
}

.bz-btn-primary:hover {
    background: var(--bz-primary-dark);
}

.bz-btn-secondary {
    background: #f1f5f9;
    color: var(--bz-text);
    border: 1px solid var(--bz-border);
}

.bz-btn-icon {
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1;
}

/* Form Panel */
.bz-form-panel {
    background: var(--bz-card);
    border-radius: var(--bz-radius);
    padding: 20px;
    margin-bottom: 24px;
    box-shadow: var(--bz-shadow-lg);
    border: 1px solid var(--bz-border);
}

.bz-form-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.bz-form-header h3 {
    margin: 0;
    font-size: 1.15rem;
}

.bz-close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--bz-text-muted);
    cursor: pointer;
    line-height: 1;
    padding: 0 4px;
}

.bz-form-group {
    margin-bottom: 14px;
}

.bz-form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--bz-text-muted);
    margin-bottom: 6px;
}

.bz-form-group .required {
    color: var(--bz-expense);
}

.bz-form-group input[type="text"],
.bz-form-group input[type="number"],
.bz-form-group input[type="date"],
.bz-form-group select {
    width: 100%;
    padding: 12px 14px;
    font-size: 1rem;
    border: 1px solid var(--bz-border);
    border-radius: 8px;
    background: #fff;
    color: var(--bz-text);
    transition: border-color 0.15s;
}

.bz-form-group input:focus,
.bz-form-group select:focus {
    outline: none;
    border-color: var(--bz-primary);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

.bz-amount-wrap {
    display: flex;
    align-items: center;
    border: 1px solid var(--bz-border);
    border-radius: 8px;
    overflow: hidden;
    background: #fff;
}

.bz-amount-wrap:focus-within {
    border-color: var(--bz-primary);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

.bz-currency-prefix {
    padding: 12px 10px 12px 14px;
    background: #f8fafc;
    font-weight: 600;
    color: var(--bz-text-muted);
    border-right: 1px solid var(--bz-border);
}

.bz-amount-wrap input {
    border: none !important;
    box-shadow: none !important;
    border-radius: 0 !important;
    flex: 1;
}

.bz-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.bz-form-actions {
    display: flex;
    gap: 10px;
    margin-top: 8px;
}

.bz-form-actions .bz-btn {
    flex: 1;
    padding: 14px;
}

/* Transactions */
.bz-transactions-section {
    background: var(--bz-card);
    border-radius: var(--bz-radius);
    padding: 16px;
    box-shadow: var(--bz-shadow);
    border: 1px solid var(--bz-border);
}

.bz-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
    flex-wrap: wrap;
    gap: 10px;
}

.bz-section-header h2 {
    font-size: 1.1rem;
    margin: 0;
}

.bz-filter-tabs {
    display: flex;
    gap: 4px;
    background: #f1f5f9;
    padding: 4px;
    border-radius: 8px;
}

.bz-tab {
    padding: 6px 12px;
    font-size: 0.8rem;
    font-weight: 500;
    border: none;
    background: transparent;
    color: var(--bz-text-muted);
    border-radius: 6px;
    cursor: pointer;
}

.bz-tab.active {
    background: #fff;
    color: var(--bz-text);
    box-shadow: 0 1px 2px rgba(0,0,0,0.06);
}

.bz-transactions-list {
    min-height: 120px;
}

.bz-txn-item {
    display: flex;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid var(--bz-border);
    gap: 12px;
}

.bz-txn-item:last-child {
    border-bottom: none;
}

.bz-txn-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.bz-txn-icon.income {
    background: var(--bz-income-bg);
    color: var(--bz-income);
}

.bz-txn-icon.expense {
    background: var(--bz-expense-bg);
    color: var(--bz-expense);
}

.bz-txn-details {
    flex: 1;
    min-width: 0;
}

.bz-txn-title {
    font-weight: 600;
    font-size: 0.95rem;
    margin: 0 0 2px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bz-txn-meta {
    font-size: 0.75rem;
    color: var(--bz-text-muted);
}

.bz-txn-amount {
    font-weight: 700;
    font-size: 1rem;
    white-space: nowrap;
}

.bz-txn-amount.income { color: var(--bz-income); }
.bz-txn-amount.expense { color: var(--bz-expense); }

.bz-txn-delete {
    background: none;
    border: none;
    color: #94a3b8;
    cursor: pointer;
    padding: 4px;
    font-size: 1.1rem;
    line-height: 1;
    opacity: 0.6;
}

.bz-txn-delete:hover {
    color: var(--bz-expense);
    opacity: 1;
}

.bz-empty {
    text-align: center;
    padding: 32px 16px;
    color: var(--bz-text-muted);
    font-size: 0.9rem;
}

.bz-loading {
    text-align: center;
    padding: 24px;
    color: var(--bz-text-muted);
}

/* Toast */
.bz-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: #0f172a;
    color: #fff;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    z-index: 9999;
    box-shadow: var(--bz-shadow-lg);
    max-width: 90%;
    text-align: center;
}

.bz-toast.success {
    background: var(--bz-income);
}

.bz-toast.error {
    background: var(--bz-expense);
}

/* Login prompt */
.bz-login-prompt {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 40vh;
}

.bz-login-card {
    text-align: center;
    padding: 40px 32px;
    max-width: 360px;
}

.bz-login-card h2 {
    margin: 0 0 12px 0;
}

.bz-login-card p {
    color: var(--bz-text-muted);
    margin-bottom: 24px;
}

/* Responsive */
@media (max-width: 480px) {
    .bz-cashbook-wrap {
        padding: 12px;
    }

    .bz-summary-grid {
        gap: 8px;
    }

    .bz-card {
        padding: 12px;
    }

    .bz-card-value {
        font-size: 1.1rem;
    }

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

    .bz-btn {
        padding: 14px 16px;
        font-size: 1rem;
    }
}

@media (min-width: 641px) {
    .bz-summary-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}