/* Total Lines: Updated for Light Mode Timeline Support */
/* --- MODERN FINTECH THEME --- */
:root { --bg-body: #0f172a; --bg-card: #1e293b; --bg-inner: #334155; --bg-input: #0f172a; --border-color: #475569; --primary: #3b82f6; --success: #10b981; --warning: #f59e0b; --danger: #ef4444; --info: #06b6d4; --purple: #8b5cf6; --text-main: #f8fafc; --text-muted: #94a3b8; --radius: 12px; --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06); }
[data-bs-theme="light"] { --bg-body: #f1f5f9; --bg-card: #ffffff; --bg-inner: #e2e8f0; --bg-input: #ffffff; --border-color: #cbd5e1; --text-main: #0f172a; --text-muted: #64748b; --primary: #2563eb; --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03); }

/* --- LIGHT MODE OVERRIDES --- */
[data-bs-theme="light"] .text-white { color: #1e293b !important; }
[data-bs-theme="light"] .text-white-50 { color: #64748b !important; }
[data-bs-theme="light"] .bg-black { background-color: #e2e8f0 !important; }
[data-bs-theme="light"] .border-secondary { border-color: #cbd5e1 !important; }
[data-bs-theme="light"] .btn-close-white { filter: none !important; }
[data-bs-theme="light"] .text-light { color: #334155 !important; }
[data-bs-theme="light"] .bg-dark { background-color: #fff !important; border: 1px solid var(--border-color); color: var(--text-main); }
[data-bs-theme="light"] .strategy-opt-box { background-color: rgba(0, 0, 0, 0.05); }
[data-bs-theme="light"] .summary-table thead th { background-color: #e2e8f0 !important; color: #0f172a !important; border-bottom-color: #cbd5e1; }
[data-bs-theme="light"] .super-header th { background-color: #cbd5e1 !important; color: #475569 !important; }
[data-bs-theme="light"] .col-timeline { background: #e2e8f0 !important; border-right: 1px solid #cbd5e1; }
[data-bs-theme="light"] .sticky-left, [data-bs-theme="light"] .sticky-right { background-color: #e2e8f0 !important; }
[data-bs-theme="light"] .grid-header { background: #e2e8f0; border-bottom: 2px solid #cbd5e1; color: #475569; }
[data-bs-theme="light"] .grid-row-group { border-bottom: 1px solid #e2e8f0; }
[data-bs-theme="light"] .grid-row-group:hover { background: rgba(0,0,0,0.03); }
[data-bs-theme="light"] .grid-detail-wrapper { background: #f8fafc; }
[data-bs-theme="light"] .detail-box { background: rgba(0,0,0,0.03); }
[data-bs-theme="light"] .modern-grid { background: #ffffff; border: 1px solid var(--border-color); }
[data-bs-theme="light"] .summary-table tr:hover td { background-color: rgba(0,0,0,0.03); color: var(--text-main); }
[data-bs-theme="light"] .year-badge { color: var(--text-main) !important; }
[data-bs-theme="light"] .age-text { color: var(--text-muted) !important; }
[data-bs-theme="light"] .grid-summary-row { color: var(--text-main); }
[data-bs-theme="light"] .grid-header .col-timeline { background: #e2e8f0 !important; }
[data-bs-theme="light"] .toggle-icon { color: var(--text-muted); }

/* --- CORE ELEMENTS --- */
body { background-color: var(--bg-body); color: var(--text-main); font-family: 'Inter', sans-serif; font-size: 0.9rem; }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-body); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* --- CARDS & LAYOUT --- */
.card { background-color: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius); box-shadow: var(--shadow); }
.main-header { background: var(--bg-card); border-bottom: 1px solid var(--border-color); padding: 1rem 1.5rem; border-radius: var(--radius); margin-bottom: 1.5rem; }
.card-header { background-color: rgba(255, 255, 255, 0.03); border-bottom: 1px solid var(--border-color); padding: 1rem 1.25rem; }
[data-bs-theme="light"] .card-header { background-color: rgba(0, 0, 0, 0.03); }
.card-header h5 { font-size: 1rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0; font-weight: 700; color: var(--text-main); }

.sticky-sidebar { position: -webkit-sticky; position: sticky; top: 20px; z-index: 100; transition: all 0.3s ease; margin-top: 65px; }
.sidebar-collapsed-btn { width: 40px; height: 40px; border-radius: 8px; background: var(--bg-card); border: 1px solid var(--border-color); display: flex; align-items: center; justify-content: center; cursor: pointer; color: var(--info); transition: all 0.2s; }
.sidebar-collapsed-btn:hover { background: var(--info); color: #000; }
.strategy-opt-box { background-color: rgba(255, 255, 255, 0.05); border: 1px solid var(--border-color); border-radius: 8px; padding: 15px; margin-bottom: 15px; }
.strategy-opt-header { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); font-weight: 700; margin-bottom: 10px; }

/* --- FORMS & INPUTS --- */
.form-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); font-weight: 600; margin-bottom: 4px; }
.form-control, .form-select, .input-group-text { background-color: var(--bg-input); border: 1px solid var(--border-color); color: var(--text-main); font-size: 0.9rem; border-radius: 6px; }
.form-control:focus, .form-select:focus { background-color: var(--bg-input); border-color: var(--primary); color: var(--text-main); box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2); }
.input-group-text { color: var(--text-muted); border-right: none; }
.input-group .form-control { border-left: none; }
.input-group .form-control:focus { z-index: 3; }
.formatted-num { text-align: right; }
input[type=range]::-webkit-slider-runnable-track { background: var(--border-color); height: 6px; border-radius: 3px; }
input[type=range]::-webkit-slider-thumb { margin-top: -5px; }

/* --- BUTTONS & NAV --- */
.nav-tabs { border-bottom: none; background: var(--bg-input); padding: 6px; border-radius: var(--radius); display: inline-flex; margin-bottom: 20px; gap: 5px; width: 100%; overflow-x: auto; }
.nav-item { flex: 1; text-align: center; }
.nav-link { color: var(--text-muted); border: none; border-radius: 8px !important; font-weight: 500; padding: 8px 12px; width: 100%; white-space: nowrap; }
.nav-link.active { background-color: var(--primary) !important; color: white !important; box-shadow: var(--shadow); }
.nav-link:hover:not(.active) { color: white; background-color: rgba(255,255,255,0.05); }
[data-bs-theme="light"] .nav-link:hover:not(.active) { color: var(--text-main); background-color: rgba(0,0,0,0.05); }
.btn-check:checked + .btn-outline-secondary { background-color: var(--info); border-color: var(--info); color: #000; font-weight: bold; }
.btn-success { background-color: var(--success); border-color: var(--success); color: #000; font-weight: 600; }
.btn-success:hover, .btn-success:focus, .btn-success:active { background-color: #059669; border-color: #059669; color: #fff; }

/* --- TABLES & GRIDS --- */
.table-container { border-radius: var(--radius); border: 1px solid var(--border-color); overflow: hidden; background: var(--bg-input); }
.summary-table { width: 100%; font-size: 0.8rem; border-collapse: separate; border-spacing: 0; }
.summary-table th { background: var(--bg-card); color: var(--info); font-weight: 600; text-transform: uppercase; font-size: 0.7rem; padding: 12px 8px; border-bottom: 2px solid var(--border-color); border-right: 1px solid var(--border-color); position: sticky; top: 0; z-index: 10; vertical-align: bottom; white-space: nowrap; }
.summary-table td { padding: 8px 8px; border-bottom: 1px solid var(--border-color); border-right: 1px solid var(--border-color); text-align: right; color: var(--text-muted); white-space: nowrap; }
.summary-table tr:hover td { background-color: rgba(255,255,255,0.03); color: var(--text-main); }
.summary-table thead th { position: sticky; top: 0; z-index: 30; background-color: var(--bg-card); }
.summary-table thead tr:nth-child(2) th { top: 29px; }

.col-detail-inv, .col-detail-inc, .col-detail-exp { display: none; }
body.show-inc .col-detail-inc, body.show-exp .col-detail-exp, body.show-inv .col-detail-inv { display: table-cell; }
body:not(.is-couple) .p2-column { display: none !important; }
body.is-couple .p2-column:not(td):not(th) { display: block; }
body:not(.is-couple) .p2-column:not(td):not(th) { display: none; }

.super-header th { z-index: 31 !important; top: 0; background-color: var(--bg-inner) !important; color: var(--text-muted); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px; padding: 4px 0; border-bottom: 1px solid var(--border-color); }
.sticky-left { position: sticky; left: 0; z-index: 20; background-color: var(--bg-card) !important; border-right: 1px solid var(--border-color); }
.sticky-right { position: sticky; right: 0; z-index: 20; background-color: var(--bg-card) !important; border-left: 2px solid var(--border-color); }
.col-events { left: 0; width: 50px; text-align: center; }
.col-year   { left: 50px; width: 60px; text-align: center; }
.col-age    { left: 110px; width: 80px; text-align: center; border-right: 2px solid var(--border-color) !important; }
.row-deficit td { background-color: rgba(220, 53, 69, 0.1) !important; }
.row-deficit td.sticky-left, .row-deficit td.sticky-right { background-color: var(--bg-card) !important; }
.nw-cell { position: relative; font-family: 'Inter', monospace; font-weight: 700; z-index: 20; }
.val-zero { color: var(--border-color) !important; font-size: 0.8em; }

/* --- MODERN PROJECTION GRID --- */
.modern-grid { display: flex; flex-direction: column; width: 100%; font-family: 'Segoe UI', system-ui, sans-serif; background: var(--bg-input); border-radius: 8px; }
.grid-header { display: grid; grid-template-columns: 110px 100px 1fr 1fr 1fr 1.2fr 30px; position: sticky; top: 0; z-index: 1000; background: var(--bg-card); padding: 8px; border-bottom: 2px solid var(--border-color); font-weight: 700; color: var(--text-muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.5px; text-align: right; align-items: center; box-shadow: 0 2px 5px rgba(0,0,0,0.3); }
.grid-header .col-start, .grid-summary-row .col-start { text-align: left; }
.grid-row-group { border-bottom: 1px solid var(--border-color); transition: background 0.2s; }
.grid-row-group:hover { background: rgba(255,255,255,0.03); }
.grid-summary-row { display: grid; grid-template-columns: 110px 100px 1fr 1fr 1fr 1.2fr 30px; padding: 6px 8px; align-items: center; cursor: pointer; color: var(--text-main); font-size: 0.9rem; text-align: right; line-height: 1.2; }
.col-timeline { position: sticky; left: 0; z-index: 900; background: inherit; display: flex; flex-direction: column; justify-content: center; border-right: 1px solid var(--border-color); margin-right: 5px; padding-right: 5px; }
.grid-header .col-timeline { background: var(--bg-card); z-index: 1001; }
.grid-detail-wrapper { background: var(--bg-input); max-height: 0; overflow: hidden; transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1); border-left: 3px solid var(--primary); }
.grid-detail-wrapper.open { max-height: 800px; border-bottom: 1px solid var(--border-color); }
.detail-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 15px; padding: 15px; }
.detail-box { background: rgba(255,255,255,0.03); padding: 12px; border-radius: 6px; display: flex; flex-direction: column; height: 100%; }
.detail-title { color: var(--text-muted); font-size: 0.75rem; text-transform: uppercase; font-weight: bold; margin-bottom: 8px; border-bottom: 1px solid var(--border-color); padding-bottom: 4px; }
.detail-item { display: flex; justify-content: space-between; margin-bottom: 4px; font-size: 0.85rem; }
.detail-item.sub { padding-left: 10px; color: var(--text-muted); font-size: 0.8rem; }
.mt-auto { margin-top: auto !important; }
.toggle-icon { transition: transform 0.3s; color: #6c757d; font-size: 0.8rem; }
.grid-row-group.expanded .toggle-icon { transform: rotate(180deg); color: var(--text-main); }
.grid-row-group.expanded .grid-summary-row { background: rgba(13, 110, 253, 0.1); }

/* --- EXPENSE TABLE POLISH --- */
.expense-table-container { border: 1px solid var(--border-color); border-radius: var(--radius); overflow: hidden; }
.expense-category-header td { background-color: var(--bg-input) !important; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.expense-row-clean td { background-color: var(--bg-card); vertical-align: middle; border-bottom: 1px solid rgba(255,255,255,0.05); padding: 8px 12px; }
.expense-row-clean:last-child td { border-bottom: none; }
.expense-input-clean { background-color: var(--bg-input) !important; border: 1px solid var(--border-color) !important; color: var(--text-main) !important; font-size: 0.85rem; }
.expense-input-clean:focus { border-color: var(--primary) !important; box-shadow: none; }
.expense-freq-clean { background-color: var(--bg-input) !important; border: 1px solid var(--border-color) !important; color: var(--text-muted) !important; font-size: 0.8rem; }

/* --- MISC & UTILITIES --- */
.household-total-label { color: var(--text-muted); font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.05em; }
.household-total-val, .expense-total-val { font-size: 1.5rem; font-weight: 700; color: var(--text-main); }
.monthly-sub { font-size: 0.9rem; color: var(--text-muted); font-weight: 400; display: inline-block; margin-left: 8px;}
.strat-item { background-color: var(--bg-input); border: 1px solid var(--border-color); border-radius: 8px; padding: 10px 15px; margin-bottom: 8px; display: flex; justify-content: space-between; align-items: center; transition: all 0.2s; cursor: grab; }
.strat-item:hover { border-color: var(--primary); transform: translateY(-1px); }
.strat-item:active { cursor: grabbing; background: #1e3a8a; }
.grip-icon { color: var(--text-muted); }
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }
.text-info { color: var(--info) !important; }
.age-display { color: var(--info); font-size: 0.8rem; font-weight: 600; }
.tax-details-box { background: rgba(0,0,0,0.2); border-radius: 8px; padding: 15px; border: 1px solid var(--border-color); font-family: monospace; }
[data-bs-theme="light"] .tax-details-box { background: rgba(0,0,0,0.05); }
.event-icon { font-size: 1rem; margin-right: 4px; cursor: help; }
.year-badge { font-weight: bold; color: #fff; font-size: 0.9rem; }
.age-text { font-size: 0.75rem; color: #6c757d; margin-top: 2px; }
.event-icons-inline { margin-left: 10px; font-size: 1.1rem; display: inline-flex; gap: 4px; vertical-align: middle; }
.status-pill { padding: 1px 6px; border-radius: 8px; font-size: 0.65rem; font-weight: bold; text-transform: uppercase; white-space: nowrap; }
.status-working { background: rgba(25, 135, 84, 0.2); color: #20c997; } 
.status-semi { background: rgba(255, 193, 7, 0.2); color: #ffc107; } 
.status-gogo { background: rgba(13, 110, 253, 0.2); color: #6ea8fe; } 
.status-slow { background: rgba(111, 66, 193, 0.2); color: #d63384; } 
.status-nogo { background: rgba(108, 117, 125, 0.2); color: #adb5bd; } 
.val-positive { color: #20c997; }
.val-negative { color: #ea868f; }
.val-neutral { color: #adb5bd; }

/* MODALS */
.modal-content { background-color: var(--bg-card); border: 1px solid var(--border-color); color: var(--text-main); }
.modal-header { border-bottom-color: var(--border-color); }
.modal-footer { border-top-color: var(--border-color); }
.btn-close-white { filter: invert(1) grayscale(100%) brightness(200%); }

/* RESPONSIVE */
@media (max-width: 768px) {
  .nav-tabs { flex-wrap: nowrap; overflow-x: scroll; justify-content: flex-start; }
  .nav-item { min-width: 100px; }
  .household-row { text-align: center; margin-bottom: 1rem; }
}