/* --- Design Tokens & Color Palette --- */
:root {
    --brand-primary: #1b3a6a;
    --brand-hover: #12284c;
    --bg-light: #f4f7fc;
    --card-bg: #ffffff;
    --text-main: #333333;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --accent-success: #10b981;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
    --shadow-lg: 0 10px 25px -5px rgba(27, 58, 106, 0.08), 0 8px 10px -6px rgba(27, 58, 106, 0.04);
}

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

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(27, 58, 106, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(18, 40, 76, 0.03) 0%, transparent 40%);
    background-attachment: fixed;
    line-height: 1.5;
}

/* --- Navigation Header --- */
.header {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.logo {
    font-family: 'Outfit', sans-serif;
    font-size: 24px;
    font-weight: 800;
    color: var(--brand-primary);
    letter-spacing: -0.5px;
}

.logo::after {
    content: '';
}

.nav-btn {
    background: transparent;
    border: 1px solid rgba(27, 58, 106, 0.2);
    color: var(--brand-primary);
    padding: 8px 18px;
    cursor: pointer;
    border-radius: 9999px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    margin-left: 8px;
}

.nav-btn:hover {
    background: var(--brand-primary);
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(27, 58, 106, 0.2);
    transform: translateY(-1px);
}

/* --- Layout & Container --- */
.container {
    max-width: 600px;
    margin: 40px auto;
    padding: 0 20px;
}

/* --- Cards & Containers --- */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 28px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px -5px rgba(27, 58, 106, 0.12);
}

/* --- Balance Dashboard --- */
.balance-title {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    font-weight: 700;
    margin-bottom: 6px;
}

.balance-amount {
    font-family: 'Outfit', sans-serif;
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--brand-primary);
}

#quickAddBtn {
    background: var(--brand-primary);
    border: none;
    width: 100%;
    padding: 12px;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 700;
    color: #FFF;
    margin-left: 0;
    box-shadow: 0 4px 12px rgba(27, 58, 106, 0.15);
}

#quickAddBtn:hover {
    background: var(--brand-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(27, 58, 106, 0.25);
}

/* --- Recent Transactions --- */
h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 18px;
    color: var(--brand-primary);
    letter-spacing: -0.3px;
}

.list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

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

.list-item strong {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
}

.list-item small {
    font-size: 12px;
    color: var(--text-secondary) !important;
}

.tx-positive {
    color: var(--accent-success);
    font-weight: 700;
    font-size: 15px;
}

.tx-negative {
    color: var(--text-main);
    font-weight: 600;
    font-size: 15px;
}

.no-transactions {
    text-align: center;
    color: var(--text-secondary);
    padding: 16px 0;
    font-size: 14px;
}

/* --- Form Fields & Controls --- */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-input {
    width: 100%;
    padding: 12px 14px;
    font-size: 15px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    border-radius: 10px;
    outline: none;
    transition: all 0.2s ease;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.02);
}

.form-input:focus {
    border-color: var(--brand-primary);
    box-shadow: 0 0 0 3px rgba(27, 58, 106, 0.1);
}

/* Custom Select styling */
select.form-input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748B'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 16px;
    padding-right: 36px;
}

.presets-container {
    margin-top: 10px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.preset-btn {
    background: #ffffff;
    border: 1px solid var(--border-color);
    color: var(--brand-primary);
    padding: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.preset-btn:hover {
    background: rgba(27, 58, 106, 0.05);
    border-color: var(--brand-primary);
    transform: translateY(-1px);
}

/* --- View Toggle Logic --- */
.view {
    display: none;
    opacity: 0;
    transform: translateY(8px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.view.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

/* --- Loader & Success Indicators --- */
.loading-indicator {
    text-align: center;
    padding: 40px 0;
    color: var(--brand-primary);
    font-size: 15px;
    font-weight: 600;
}

/* Spinner Animation */
.loading-indicator::before {
    content: '';
    display: block;
    width: 36px;
    height: 36px;
    border: 3px solid rgba(27, 58, 106, 0.1);
    border-top-color: var(--brand-primary);
    border-radius: 50%;
    margin: 0 auto 16px;
    animation: spin 0.8s infinite linear;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.success-message {
    text-align: center;
    padding: 10px 0;
}

.success-message h4 {
    font-family: 'Outfit', sans-serif;
    font-size: 22px;
    color: var(--accent-success);
    margin-bottom: 6px;
}

.success-message p {
    color: var(--text-secondary);
    font-size: 14px;
}

.receipt {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    padding: 16px;
    border-radius: 12px;
    margin: 20px 0;
}

.receipt-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 14px;
}

.receipt-row:last-child {
    margin-bottom: 0;
}

.receipt-row span:first-child {
    color: var(--text-secondary);
}

.receipt-row span:last-child {
    font-weight: 600;
    color: var(--text-main);
}

/* --- Filters & Search Toolbar --- */
.filters-toolbar {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    padding: 16px;
    border-radius: 12px;
    margin-bottom: 20px;
}

.search-box {
    margin-bottom: 12px;
}

.filter-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 12px;
}

.filter-row:last-child {
    margin-bottom: 0;
}

.filter-label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

/* --- Status Badges --- */
.status-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 9999px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    text-align: center;
}

.status-completed {
    background-color: rgba(16, 185, 129, 0.12);
    color: var(--accent-success);
}

.status-pending {
    background-color: rgba(245, 158, 11, 0.12);
    color: #D97706;
}

.status-failed {
    background-color: rgba(239, 68, 68, 0.12);
    color: #DC2626;
}

/* --- Transaction List Row --- */
.txn-row {
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.txn-row:hover {
    background-color: rgba(27, 58, 106, 0.03);
}

/* --- Modal Overlay & Card --- */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 28px;
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-overlay.active .modal-card {
    transform: translateY(0);
}

.close-modal-btn {
    font-size: 28px;
    font-weight: 300;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s ease;
}

.close-modal-btn:hover {
    color: var(--text-main);
}

.modal-details-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 10px;
}

.detail-row {
    display: flex;
    flex-direction: column;
}

.detail-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.detail-val {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
    word-break: break-all;
}