/* ========== CSS Variables ========== */
:root {
    --primary: #1a365d;
    --primary-light: #2c5282;
    --primary-dark: #0f2440;
    --accent: #3182ce;
    --accent-light: #63b3ed;
    --green: #38a169;
    --green-light: #c6f6d5;
    --gold: #d69e2e;
    --gold-light: #fefcbf;
    --red: #e53e3e;
    --red-light: #fed7d7;
    --gray-50: #f7fafc;
    --gray-100: #edf2f7;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e0;
    --gray-400: #a0aec0;
    --gray-500: #718096;
    --gray-600: #4a5568;
    --gray-700: #2d3748;
    --gray-800: #1a202c;
    --white: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.12);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ========== Reset & Base ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
    font-family: var(--font);
    background: var(--gray-50);
    color: var(--gray-700);
    line-height: 1.6;
    min-height: 100vh;
}
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* ========== Header ========== */
header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--white);
    padding: 40px 0 32px;
    text-align: center;
    box-shadow: var(--shadow-md);
}
header h1 { font-size: 1.9rem; font-weight: 800; letter-spacing: -0.5px; }
header .subtitle { font-size: 1rem; opacity: 0.85; margin-top: 6px; font-weight: 400; }
header .data-date { font-size: 0.75rem; opacity: 0.6; margin-top: 2px; font-weight: 400; }
.header-icon { width: 28px; height: 28px; vertical-align: middle; margin-left: 8px; }

/* ========== Cards ========== */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 28px 32px;
    margin-bottom: 24px;
    border: 1px solid var(--gray-200);
}
.card h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--gray-100);
}
.card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 14px;
}

/* ========== Form Elements ========== */
.setup-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 18px;
}
.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
input[type="number"], select {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 500;
    color: var(--gray-800);
    transition: border-color 0.2s;
    background: var(--white);
}
input[type="number"]:focus, select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(49,130,206,0.15);
}
.input-prefix-wrap, .input-suffix-wrap {
    position: relative;
}
.input-prefix {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-weight: 600;
    color: var(--gray-500);
    font-size: 1rem;
}
.input-suffix {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-weight: 500;
    color: var(--gray-400);
    font-size: 0.85rem;
}
.input-prefix-wrap input { padding-left: 28px; }
.input-suffix-wrap input { padding-right: 52px; }

/* ========== Investment Summary ========== */
.investment-summary {
    margin-top: 18px;
    padding: 14px 18px;
    background: var(--gray-50);
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
    font-size: 0.9rem;
    color: var(--gray-600);
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}
.investment-summary .stat {
    display: flex;
    flex-direction: column;
}
.investment-summary .stat-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: var(--gray-600);
    font-weight: 500;
}
.investment-summary .stat-value {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--primary);
}

/* ========== Budget Bar ========== */
.budget-bar {
    background: var(--gray-50);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 20px;
    border: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.budget-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    flex-wrap: wrap;
    font-size: 0.9rem;
}
.budget-label { color: var(--gray-600); font-weight: 500; }
.budget-amount { font-weight: 700; color: var(--primary); font-size: 1.1rem; }
.budget-remaining { color: var(--gray-600); margin-left: auto; }
.budget-remaining strong { color: var(--green); font-size: 1.05rem; }
.budget-info.over .budget-remaining strong { color: var(--red); }
.budget-info.over .budget-amount { color: var(--red); }
.budget-track {
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
}
.budget-used {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--green));
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

/* ========== ETF Picker ========== */
.etf-picker {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}
.etf-option {
    font-family: var(--font);
    text-align: left;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--white);
    position: relative;
    overflow: hidden;
}
.etf-option:hover {
    border-color: var(--accent-light);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}
.etf-option.selected {
    border-color: var(--accent);
    background: rgba(49,130,206,0.04);
    box-shadow: 0 0 0 2px rgba(49,130,206,0.15);
}
.etf-ticker {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--primary);
}
.etf-name {
    font-size: 0.72rem;
    color: var(--gray-600);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.etf-price {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-top: 8px;
}
.etf-stats {
    display: flex;
    gap: 8px;
    margin-top: 6px;
    flex-wrap: wrap;
}
.etf-stat {
    font-size: 0.75rem;
    padding: 2px 7px;
    border-radius: 4px;
    font-weight: 600;
}
.etf-stat.div { background: var(--green-light); color: #276749; }
.etf-stat.growth { background: #ebf8ff; color: #2b6cb0; }
.etf-stat.negative { background: var(--red-light); color: #c53030; }
.etf-option .check-badge {
    display: none; /* unused */
}

/* ========== Dollar Input Row on ETF Tiles ========== */
.etf-dollar-row {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 10px;
}
.etf-dollar-prefix {
    font-weight: 700;
    font-size: 1rem;
    color: var(--gray-500);
    flex-shrink: 0;
}
.etf-dollar-input {
    flex: 1;
    min-width: 0;
    padding: 8px 10px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gray-800);
    transition: border-color 0.2s;
    background: var(--white);
    -moz-appearance: textfield;
}
.etf-dollar-input::-webkit-inner-spin-button,
.etf-dollar-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
.etf-dollar-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(49,130,206,0.15);
}
.etf-max-btn {
    font-family: var(--font);
    font-size: 0.72rem;
    font-weight: 600;
    padding: 8px 10px;
    background: #ebf8ff;
    color: #2b6cb0;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s;
    flex-shrink: 0;
}
.etf-max-btn:hover { background: #bee3f8; }

/* ========== Shares Display on Tile ========== */
.etf-shares-display {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--accent);
    margin-top: 6px;
    min-height: 1.2em;
}

/* ========== Allocation List ========== */
.selected-allocations { margin-top: 8px; }
.allocation-list { display: flex; flex-direction: column; gap: 10px; }
.allocation-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    background: var(--gray-50);
    border-radius: var(--radius-sm);
    border: 1px solid var(--gray-200);
}
.allocation-item .ticker {
    font-weight: 800;
    font-size: 1rem;
    color: var(--primary);
    min-width: 45px;
}
.allocation-item .alloc-details {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.85rem;
}
.allocation-item .alloc-detail {
    display: flex;
    align-items: center;
    gap: 4px;
}
.allocation-item .alloc-detail .label {
    color: var(--gray-500);
    font-size: 0.78rem;
}
.allocation-item .alloc-detail .value {
    font-weight: 600;
    color: var(--gray-800);
}
.allocation-item .share-input-wrap {
    display: flex;
    align-items: center;
    gap: 6px;
}
.allocation-item .share-input {
    width: 60px;
    padding: 6px 10px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
}
.allocation-item .share-input:focus {
    outline: none;
    border-color: var(--accent);
}
.allocation-item .max-badge {
    font-size: 0.72rem;
    padding: 8px 12px;
    min-height: 44px;
    background: #ebf8ff;
    color: #2b6cb0;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    font-family: var(--font);
    border: none;
}
.allocation-item .max-badge:hover { background: #bee3f8; }
.allocation-item .remove-btn {
    background: none;
    border: none;
    color: var(--gray-400);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 10px 12px;
    min-width: 44px;
    min-height: 44px;
    border-radius: 4px;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.allocation-item .remove-btn:hover {
    color: var(--red);
    background: var(--red-light);
}
.allocation-item .alloc-remaining-row {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    margin-top: 2px;
}
.allocation-item .alloc-remaining-label {
    color: var(--gray-400);
}
.allocation-item .alloc-remaining-value {
    font-weight: 700;
    color: var(--green);
}
.allocation-item .alloc-remaining-value.over {
    color: var(--red);
}
.empty-state {
    text-align: center;
    color: var(--gray-400);
    font-size: 0.9rem;
    padding: 20px 0;
    font-style: italic;
}

/* ========== Action Bar ========== */
.action-bar {
    text-align: center;
    margin-bottom: 40px;
    display: flex;
    justify-content: center;
    gap: 14px;
    flex-wrap: wrap;
}
.btn {
    font-family: var(--font);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 12px 28px;
    font-size: 1rem;
    transition: all 0.2s;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--primary-light));
    color: var(--white);
    box-shadow: 0 4px 12px rgba(49,130,206,0.3);
}
.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(49,130,206,0.4);
}
.btn-lg { padding: 14px 40px; font-size: 1.05rem; }
.btn-secondary {
    background: var(--white);
    color: var(--gray-600);
    border: 2px solid var(--gray-200);
}
.btn-secondary:hover {
    border-color: var(--gray-300);
    background: var(--gray-50);
}

/* ========== Results ========== */
.results-card { animation: fadeUp 0.4s ease; }
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
    margin-bottom: 28px;
}
.summary-card {
    background: var(--gray-50);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    text-align: center;
    border: 1px solid var(--gray-200);
}
.summary-card .sc-label {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gray-500);
    font-weight: 600;
    margin-bottom: 6px;
}
.summary-card .sc-value {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--primary);
}
.summary-card .sc-sub {
    font-size: 0.78rem;
    color: var(--gray-500);
    margin-top: 2px;
}
.summary-card.highlight { background: #ebf8ff; border-color: var(--accent-light); }
.summary-card.highlight .sc-value { color: var(--accent); }
.summary-card.green { background: var(--green-light); border-color: #9ae6b4; }
.summary-card.green .sc-value { color: #276749; }
.summary-card.gold { background: var(--gold-light); border-color: #f6e05e; }
.summary-card.gold .sc-value { color: #975a16; }

/* ========== Charts ========== */
.charts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 28px;
}
.chart-container {
    background: var(--gray-50);
    border-radius: var(--radius-md);
    padding: 20px;
    border: 1px solid var(--gray-200);
}
.chart-container h3 { margin-bottom: 12px; font-size: 0.95rem; }

/* ========== ETF Tabs ========== */
.etf-breakdown { margin-bottom: 28px; }
.etf-tabs {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 16px;
}
.etf-tab {
    padding: 8px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    background: var(--white);
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--gray-600);
    cursor: pointer;
    transition: all 0.2s;
}
.etf-tab:hover { border-color: var(--accent-light); }
.etf-tab.active {
    border-color: var(--accent);
    background: var(--accent);
    color: var(--white);
}

/* ========== Data Table ========== */
.table-wrap { margin-bottom: 20px; }
.table-wrap { overflow-x: auto; }
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
}
.data-table th {
    background: var(--primary);
    color: var(--white);
    padding: 10px 12px;
    text-align: right;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    position: sticky;
    top: 0;
}
.data-table th:first-child, .data-table td:first-child { text-align: center; }
.data-table td {
    padding: 9px 12px;
    text-align: right;
    border-bottom: 1px solid var(--gray-100);
    font-variant-numeric: tabular-nums;
}
.data-table tbody tr:hover { background: #f0f7ff; }
.data-table .year-row td {
    font-weight: 700;
    color: var(--primary);
    background: var(--gray-50);
}
.data-table .final-row td {
    font-weight: 800;
    color: var(--primary-dark);
    background: #ebf8ff;
    border-top: 2px solid var(--accent);
}
.data-table .positive { color: var(--green); }
.data-table .negative { color: var(--red); }
.data-table .investing-active {
    color: var(--green);
    font-weight: 600;
}
.data-table .investing-done {
    color: var(--gray-400);
    font-weight: 500;
}
.data-table .last-invest-year {
    font-weight: 800;
    color: var(--red);
}

/* ========== Footer ========== */
footer {
    text-align: center;
    padding: 24px 0 32px;
    color: var(--gray-500);
    font-size: 0.8rem;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
    header { padding: 24px 0 20px; }
    header h1 { font-size: 1.35rem; }
    header .subtitle { font-size: 0.88rem; }
    .card { padding: 18px 14px; margin-bottom: 16px; }
    .card h2 { font-size: 1.05rem; margin-bottom: 14px; padding-bottom: 10px; }
    .setup-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
    .charts-grid { grid-template-columns: 1fr; }
    .etf-picker { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; }
    .etf-option { padding: 12px; }
    .allocation-item { flex-wrap: wrap; }
    .summary-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .summary-card { padding: 14px; }
    .summary-card .sc-value { font-size: 1.2rem; }
    .btn { padding: 12px 20px; font-size: 0.95rem; }
    .btn-lg { padding: 12px 28px; font-size: 1rem; }
    .budget-bar { padding: 12px 14px; margin-bottom: 14px; }
    .budget-info { font-size: 0.85rem; }
    .budget-amount { font-size: 1rem; }
    .investment-summary { padding: 12px 14px; gap: 16px; }
    .etf-tabs { gap: 4px; }
    .etf-tab { padding: 6px 12px; font-size: 0.8rem; }
    footer { padding: 16px 0 24px; }
}
@media (max-width: 480px) {
    html { font-size: 15px; }
    header { padding: 20px 0 16px; }
    header h1 { font-size: 1.25rem; }
    header .subtitle { font-size: 0.82rem; }
    .card { padding: 14px 12px; margin-bottom: 12px; }
    .card h2 { font-size: 1rem; margin-bottom: 12px; }
    .setup-grid { grid-template-columns: 1fr; gap: 10px; }
    .form-group label { font-size: 0.75rem; }
    input[type="number"], select { padding: 10px 12px; font-size: 0.95rem; }
    .summary-grid { grid-template-columns: 1fr; }
    .summary-card .sc-value { font-size: 1.15rem; }
    .investment-summary { flex-direction: column; gap: 6px; }
    .etf-picker { grid-template-columns: 1fr 1fr; gap: 8px; }
    .etf-option { padding: 10px 12px; }
    .etf-ticker { font-size: 1.05rem; }
    .etf-name { font-size: 0.68rem; }
    .etf-price { font-size: 1rem; }
    .etf-stats { gap: 4px; margin-top: 4px; }
    .etf-stat { font-size: 0.68rem; padding: 2px 5px; }
    .etf-dollar-row { gap: 4px; margin-top: 8px; }
    .etf-dollar-input { padding: 8px 8px; font-size: 0.9rem; }
    .etf-dollar-prefix { font-size: 0.9rem; }
    .etf-max-btn { padding: 8px 8px; font-size: 0.7rem; min-height: 36px; }
    .etf-shares-display { font-size: 0.72rem; margin-top: 4px; }
    .budget-info { flex-wrap: wrap; }
    .budget-remaining { margin-left: 0; width: 100%; }
    .action-bar { gap: 10px; }
    .btn { padding: 12px 16px; font-size: 0.9rem; width: 100%; }
    .btn-lg { padding: 14px 20px; }
    .btn-secondary { width: auto; }
    .data-table { font-size: 0.75rem; }
    .data-table th, .data-table td { padding: 7px 8px; }
    .chart-container { padding: 14px; }
    .chart-container h3 { font-size: 0.85rem; }
    .container { padding: 0 12px; }
}

/* ========== Scrollbar ========== */
.table-wrap::-webkit-scrollbar { height: 6px; }
.table-wrap::-webkit-scrollbar-track { background: var(--gray-100); border-radius: 3px; }
.table-wrap::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }

/* ========== Toast Notifications ========== */
#toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 400px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-family: 'Inter', system-ui, sans-serif;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    opacity: 0;
    transform: translateX(100%);
    transition: opacity 250ms ease-out, transform 250ms ease-out;
}

.toast-visible {
    opacity: 1;
    transform: translateX(0);
}

.toast-exit {
    opacity: 0;
    transform: translateX(100%);
    transition: opacity 200ms ease-in, transform 200ms ease-in;
}

.toast-warning {
    background: #fffbeb;
    color: #92400e;
    border: 1px solid #fbbf24;
}

.toast-error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #f87171;
}

.toast-info {
    background: #eff6ff;
    color: #1e40af;
    border: 1px solid #60a5fa;
}

.toast-success {
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #4ade80;
}