/* ===================================================
   Budget Tool — Main Stylesheet
   Clean, modern design with sidebar navigation
   =================================================== */

/* CSS Variables */
:root {
    --color-bg: #f5f7fa;
    --color-surface: #ffffff;
    --color-sidebar-bg: #1a1f2e;
    --color-sidebar-text: #c5cce0;
    --color-sidebar-active: #4f8ef7;
    --color-sidebar-hover: #2a3145;
    --color-primary: #4f8ef7;
    --color-primary-dark: #3a70d4;
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --color-muted: #94a3b8;
    --color-text: #1e293b;
    --color-text-secondary: #64748b;
    --color-border: #e2e8f0;
    --color-income: #16a34a;
    --color-expense: #dc2626;
    --sidebar-width: 220px;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1), 0 2px 4px rgba(0,0,0,0.06);
    --transition: 0.15s ease;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
    font-size: 14px;
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.5;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}
a:hover { text-decoration: underline; }

/* ===================================================
   LAYOUT
   =================================================== */

.app-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--color-sidebar-bg);
    color: var(--color-sidebar-text);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    transition: width var(--transition);
}

.sidebar-header {
    padding: 20px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 22px;
}

.logo-text {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.3px;
}

.nav-list {
    list-style: none;
    padding: 12px 0;
    flex: 1;
}

.nav-item {
    margin: 2px 8px;
    border-radius: 6px;
    overflow: hidden;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    color: var(--color-sidebar-text);
    text-decoration: none;
    font-size: 13.5px;
    font-weight: 500;
    border-radius: 6px;
    transition: background var(--transition), color var(--transition);
}

.nav-link:hover {
    background: var(--color-sidebar-hover);
    color: #fff;
    text-decoration: none;
}

.nav-item.active .nav-link {
    background: var(--color-sidebar-active);
    color: #fff;
}

.nav-icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

/* Main Content */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    min-height: 100vh;
    overflow-x: hidden;
}

.content-wrapper {
    max-width: 1200px;
    padding: 28px 32px;
    margin: 0 auto;
}

/* ===================================================
   PAGE HEADER
   =================================================== */

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    gap: 16px;
}

.page-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.5px;
}

.page-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ===================================================
   CARDS
   =================================================== */

.card {
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--color-border);
    overflow: hidden;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #fafbfc;
}

.card-header.collapsible {
    cursor: pointer;
    user-select: none;
}

.card-header.collapsible:hover {
    background: #f1f5f9;
}

.card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
}

.card-body {
    padding: 20px;
}

.card-body.p-0 {
    padding: 0;
}

/* ===================================================
   METRICS CARDS
   =================================================== */

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 4px;
}

.metric-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 20px 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--color-border);
    border-top: 3px solid transparent;
}

.metric-card.income    { border-top-color: var(--color-income); }
.metric-card.expense   { border-top-color: var(--color-expense); }
.metric-card.balance-positive { border-top-color: var(--color-success); }
.metric-card.balance-negative { border-top-color: var(--color-danger); }
.metric-card.neutral   { border-top-color: var(--color-primary); }

.metric-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.metric-value {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -1px;
    color: var(--color-text);
}

/* ===================================================
   RECONCILIATION
   =================================================== */

.reconciliation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.recon-item {
    background: var(--color-bg);
    border-radius: var(--radius);
    padding: 16px;
    border: 1px solid var(--color-border);
}

.recon-item.highlight {
    background: #eff6ff;
    border-color: var(--color-primary);
}

.recon-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
}

.recon-value {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-text);
}

/* ===================================================
   TABLES
   =================================================== */

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
}

.data-table th {
    padding: 10px 14px;
    text-align: left;
    font-size: 11.5px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: var(--color-text-secondary);
    background: #f8fafc;
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

.data-table td {
    padding: 10px 14px;
    border-bottom: 1px solid #f1f5f9;
    vertical-align: middle;
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.data-table tbody tr:hover {
    background: #f8fafc;
}

.text-right { text-align: right !important; }
.text-center { text-align: center !important; }

/* Transaction-specific table styles */
.tx-row.needs-review {
    background: #fffbeb;
}

.tx-row.excluded {
    opacity: 0.5;
    text-decoration: line-through;
}

.tx-description {
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 250px;
}

.tx-merchant {
    font-size: 11.5px;
    color: var(--color-text-secondary);
    margin-top: 2px;
}

.amount-expense { color: var(--color-expense); font-weight: 600; }
.amount-income  { color: var(--color-income);  font-weight: 600; }

.split-ratio {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-secondary);
    letter-spacing: 0.2px;
}

.date-cell {
    white-space: nowrap;
    font-size: 12.5px;
    color: var(--color-text-secondary);
}

.desc-cell {
    max-width: 280px;
}

.category-cell {
    min-width: 160px;
}

.actions-cell {
    white-space: nowrap;
    text-align: right;
}

.edit-row {
    background: #f0f7ff !important;
}

.row-disabled {
    opacity: 0.6;
}

.conditions-cell {
    max-width: 200px;
}

.conditions-code {
    font-size: 11.5px;
    background: #f1f5f9;
    padding: 2px 6px;
    border-radius: 4px;
    word-break: break-word;
}

/* ===================================================
   BADGES
   =================================================== */

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 99px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-success { background: #dcfce7; color: #16a34a; }
.badge-warning { background: #fef9c3; color: #a16207; }
.badge-danger  { background: #fee2e2; color: #dc2626; }
.badge-muted   { background: #f1f5f9; color: #64748b; }
.badge-info    { background: #dbeafe; color: #2563eb; }

.badge-op { font-size: 11px; }
.badge-cb            { background: #1e293b; color: #fff; }
.badge-transfer      { background: #f1f5f9; color: #475569; border: 1px solid #e2e8f0; }
.badge-direct-debit  { background: #f1f5f9; color: #475569; border: 1px solid #e2e8f0; }
.badge-check         { background: #fef3c7; color: #92400e; }
.badge-withdrawal    { background: #dc2626; color: #fff; }

/* ===================================================
   BUTTONS
   =================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 13.5px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    white-space: nowrap;
}

.btn:hover { text-decoration: none; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); }

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

.btn-secondary { background: #f1f5f9; color: var(--color-text); border: 1px solid var(--color-border); }
.btn-secondary:hover { background: #e2e8f0; }

.btn-danger    { background: var(--color-danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }

.btn-sm  { padding: 5px 10px; font-size: 12px; }
.btn-lg  { padding: 11px 22px; font-size: 15px; }

.btn-icon {
    background: none;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 14px;
    transition: background var(--transition);
}
.btn-icon:hover { background: #f1f5f9; }

/* ===================================================
   FORMS
   =================================================== */

.form-row {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: flex-start;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    min-width: 140px;
    flex: 1;
}

.form-group.flex-2 { flex: 2; }
.form-group.align-end { justify-content: flex-end; flex-direction: row; align-items: flex-end; }

.form-label {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--color-text);
}

.form-control {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 13.5px;
    color: var(--color-text);
    background: var(--color-surface);
    transition: border-color var(--transition), box-shadow var(--transition);
    width: 100%;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(79,142,247,0.15);
}

.form-control-sm {
    padding: 5px 8px;
    font-size: 12.5px;
}

.form-hint {
    font-size: 11.5px;
    color: var(--color-text-secondary);
}

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

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

.form-section {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 16px;
    margin-top: 16px;
}

.form-section legend {
    padding: 0 8px;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.inline-form {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.inline-edit-form {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: flex-end;
}

.color-picker {
    width: 60px;
    height: 38px;
    padding: 4px;
    cursor: pointer;
}

textarea.form-control {
    resize: vertical;
}

/* ===================================================
   FILE UPLOAD
   =================================================== */

.file-upload-area {
    position: relative;
}

.file-input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    z-index: 2;
}

.file-upload-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 32px 20px;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius);
    text-align: center;
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition);
    background: #f8fafc;
}

.file-upload-label:hover {
    border-color: var(--color-primary);
    background: #eff6ff;
}

.file-icon {
    font-size: 32px;
}

.file-hint {
    font-size: 11.5px;
    color: var(--color-text-secondary);
}

/* ===================================================
   ALERTS
   =================================================== */

.alert {
    padding: 14px 18px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    border: 1px solid transparent;
}

.alert-success {
    background: #dcfce7;
    border-color: #86efac;
    color: #15803d;
}

.alert-error {
    background: #fee2e2;
    border-color: #fca5a5;
    color: #b91c1c;
}

.alert-warning {
    background: #fef9c3;
    border-color: #fde047;
    color: #92400e;
}

.result-list {
    margin: 8px 0 0 16px;
}

/* ===================================================
   FILTER BAR
   =================================================== */

.filter-bar {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    padding: 5px 14px;
    border-radius: 99px;
    font-size: 12.5px;
    font-weight: 500;
    background: var(--color-surface);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    text-decoration: none;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.filter-chip:hover {
    background: #f1f5f9;
    color: var(--color-text);
    text-decoration: none;
}

.filter-chip.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

/* ===================================================
   BALANCE SUMMARY
   =================================================== */

.balance-summary {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.balance-card {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 6px;
    border: 1px solid var(--color-border);
    border-left-width: 3px;
    background: var(--color-surface);
    font-size: 13px;
    line-height: 1.4;
}

.balance-card.balance-ok   { border-left-color: #22c55e; }
.balance-card.balance-warn { border-left-color: #f59e0b; }
.balance-card.balance-err  { border-left-color: #ef4444; }

.balance-bank {
    font-weight: 600;
    color: var(--color-text);
}

.balance-sep {
    color: var(--color-text-secondary);
    user-select: none;
}

.balance-field {
    color: var(--color-text);
}

.balance-label {
    font-size: 11px;
    color: var(--color-text-secondary);
    margin-right: 2px;
}

.balance-diff {
    font-weight: 600;
}

.balance-card.balance-ok   .balance-diff { color: #22c55e; }
.balance-card.balance-warn .balance-diff { color: #f59e0b; }
.balance-card.balance-err  .balance-diff { color: #ef4444; }

/* ===================================================
   STATS ROW (transactions page)
   =================================================== */

.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 16px;
}

.stat-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 20px 24px;
    border: 1px solid var(--color-border);
}

.stat-label {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text);
}

.stat-warn { color: #d97706; }

/* ===================================================
   MONTH NAVIGATION
   =================================================== */

.btn-nav {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    border: 1px solid var(--color-border);
    color: var(--color-text);
    text-decoration: none;
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    background: var(--color-surface);
    flex-shrink: 0;
}

.btn-nav:hover {
    background: #f1f5f9;
    color: var(--color-text);
    text-decoration: none;
}

.month-label {
    font-size: 14px;
    font-weight: 500;
    min-width: 120px;
    text-align: center;
    color: var(--color-text);
    white-space: nowrap;
}

/* ===================================================
   RECONCILIATION CARD (transactions page)
   =================================================== */

.recon-card {
    padding: 20px 24px;
    margin-bottom: 16px;
    border-left: 3px solid transparent;
}

.recon-card.recon-ok   { border-left-color: #22c55e; }
.recon-card.recon-warn { border-left-color: #f59e0b; }
.recon-card.recon-err  { border-left-color: #ef4444; }

.recon-title {
    font-weight: 600;
    font-size: 15px;
    margin-bottom: 16px;
}

.recon-title span {
    font-weight: 400;
    color: var(--color-text-secondary);
    margin-left: 6px;
}

.recon-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.recon-label {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-bottom: 4px;
}

.recon-val {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
}

.recon-status-ok   { color: #16a34a; }
.recon-status-warn { color: #d97706; }
.recon-status-err  { color: #dc2626; }

.recon-status-label { font-weight: 600; }

/* ===================================================
   BULK BAR
   =================================================== */

.bulk-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: var(--radius);
    margin-bottom: 12px;
    flex-wrap: wrap;
}

/* ===================================================
   MONTH SELECTOR
   =================================================== */

.month-selector {
    padding: 7px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 13.5px;
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
}

/* ===================================================
   MISC
   =================================================== */

.empty-state {
    padding: 48px 24px;
    text-align: center;
    color: var(--color-text-secondary);
}

.empty-state p {
    margin-bottom: 16px;
    font-size: 15px;
}

.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 20px; }
.mb-4 { margin-bottom: 20px; }

.text-muted { color: var(--color-text-secondary); }
.small { font-size: 12px; }

.steps-list {
    padding-left: 24px;
    line-height: 2;
}

.hint-text {
    margin-top: 12px;
    font-size: 12.5px;
    color: var(--color-text-secondary);
}

code {
    background: #f1f5f9;
    padding: 1px 5px;
    border-radius: 4px;
    font-family: 'Fira Code', 'Cascadia Code', Consolas, monospace;
    font-size: 12.5px;
}

details summary {
    cursor: pointer;
    font-weight: 600;
    margin-top: 8px;
}

.color-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 6px;
    vertical-align: middle;
}

.color-preview {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11.5px;
    color: #fff;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

.collapse-icon {
    font-size: 12px;
    color: var(--color-text-secondary);
    transition: transform var(--transition);
}

/* ===================================================
   AUTH — Login page & sidebar user footer
   =================================================== */

.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--color-bg);
}

.login-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 48px 40px;
    text-align: center;
    width: 100%;
    max-width: 360px;
}

.login-header {
    margin-bottom: 32px;
}

.login-header .logo-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 12px;
}

.login-header h1 {
    font-size: 22px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 6px;
}

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

.btn-login {
    display: block;
    width: 100%;
    padding: 12px 20px;
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius);
    background: var(--color-primary);
    color: #fff;
    text-decoration: none;
    transition: background var(--transition);
}

.btn-login:hover {
    background: var(--color-primary-dark);
    text-decoration: none;
}

/* Sidebar user footer */
.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid rgba(255,255,255,0.08);
    margin-top: auto;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--color-sidebar-text);
    font-size: 13px;
    margin-bottom: 8px;
    overflow: hidden;
}

.user-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.btn-logout {
    width: 100%;
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius);
    background: transparent;
    color: var(--color-sidebar-text);
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.btn-logout:hover {
    background: rgba(255,255,255,0.08);
    color: #fff;
}

/* ===================================================
   RESPONSIVE
   =================================================== */

@media (max-width: 768px) {
    .sidebar {
        width: 56px;
    }

    .logo-text,
    .nav-link span:not(.nav-icon) {
        display: none;
    }

    .main-content {
        margin-left: 56px;
    }

    .content-wrapper {
        padding: 16px;
    }

    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .form-row {
        flex-direction: column;
    }

    .data-table {
        font-size: 12px;
    }

    .tx-description {
        max-width: 140px;
    }
}