/* ══════════════════════════════════════════════════════════
   FinCalc Pro — Style System
   ══════════════════════════════════════════════════════════ */

/* ── CSS Custom Properties (Dark Theme Default) ── */
:root {
    /* Typography */
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --gap: 16px;
    --radius: 14px;
    --radius-sm: 8px;

    /* Transitions */
    --ease: cubic-bezier(.4, 0, .2, 1);
    --duration: .3s;
}

[data-theme="dark"] {
    --bg-primary: #0b0f1a;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, .85);
    --bg-card-hover: rgba(26, 35, 56, .95);
    --bg-input: #1a2236;
    --bg-glass: rgba(17, 24, 39, .6);
    --border: rgba(99, 128, 255, .12);
    --border-focus: rgba(99, 128, 255, .5);
    --text-primary: #f0f2f8;
    --text-secondary: #8892a8;
    --text-muted: #5a6480;
    --accent: #6366f1;
    --accent-glow: rgba(99, 102, 241, .25);
    --accent-secondary: #22d3ee;
    --success: #34d399;
    --warning: #fbbf24;
    --danger: #f87171;
    --kpi-bg: linear-gradient(135deg, rgba(99, 102, 241, .15), rgba(34, 211, 238, .08));
    --kpi-primary-bg: linear-gradient(135deg, #6366f1, #8b5cf6);
    --chart-grid: rgba(255, 255, 255, .06);
    --shadow: 0 4px 24px rgba(0, 0, 0, .35);
    --shadow-lg: 0 8px 48px rgba(0, 0, 0, .5);
    --scrollbar-track: #111827;
    --scrollbar-thumb: #2a3450;
}

[data-theme="light"] {
    --bg-primary: #f4f6fb;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, .9);
    --bg-card-hover: rgba(255, 255, 255, 1);
    --bg-input: #eef1f8;
    --bg-glass: rgba(255, 255, 255, .6);
    --border: rgba(99, 128, 255, .15);
    --border-focus: rgba(99, 102, 241, .5);
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --accent: #6366f1;
    --accent-glow: rgba(99, 102, 241, .15);
    --accent-secondary: #0891b2;
    --success: #059669;
    --warning: #d97706;
    --danger: #dc2626;
    --kpi-bg: linear-gradient(135deg, rgba(99, 102, 241, .08), rgba(34, 211, 238, .04));
    --kpi-primary-bg: linear-gradient(135deg, #6366f1, #8b5cf6);
    --chart-grid: rgba(0, 0, 0, .06);
    --shadow: 0 4px 24px rgba(0, 0, 0, .08);
    --shadow-lg: 0 8px 48px rgba(0, 0, 0, .12);
    --scrollbar-track: #eef1f8;
    --scrollbar-thumb: #c8cee0;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background var(--duration) var(--ease), color var(--duration) var(--ease);
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 4px;
}

/* ══════════════════════ HEADER ══════════════════════ */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--kpi-primary-bg);
    border-radius: var(--radius-sm);
    color: #fff;
}

.app-header h1 {
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: -.02em;
}

.accent {
    color: var(--accent);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ══════════════════════ BUTTONS ══════════════════════ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: .85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--duration) var(--ease);
    white-space: nowrap;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-ghost:hover {
    background: var(--accent-glow);
    color: var(--accent);
    border-color: var(--accent);
}

.btn-icon {
    background: transparent;
    color: var(--text-secondary);
    padding: 8px;
    border-radius: 50%;
}

.btn-icon:hover {
    background: var(--accent-glow);
    color: var(--accent);
}

.btn-sm {
    padding: 6px 12px;
    font-size: .8rem;
}

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

.btn-accent:hover {
    filter: brightness(1.15);
}

/* Theme Toggle Icons */
[data-theme="dark"] .icon-sun {
    display: block;
}

[data-theme="dark"] .icon-moon {
    display: none;
}

[data-theme="light"] .icon-sun {
    display: none;
}

[data-theme="light"] .icon-moon {
    display: block;
}

/* ══════════════════════ PRESETS BAR ══════════════════════ */
.presets-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 24px;
    overflow-x: auto;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
}

.presets-label {
    font-size: .8rem;
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
}

.presets-scroll {
    display: flex;
    gap: 8px;
}

.preset-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border: 1px solid var(--border);
    border-radius: 100px;
    background: var(--bg-card);
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: .8rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--duration) var(--ease);
}

.preset-btn:hover {
    background: var(--accent-glow);
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-1px);
}

.preset-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

/* ══════════════════════ DASHBOARD GRID ══════════════════════ */
.dashboard {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: var(--gap);
    padding: var(--gap) 24px 40px;
    max-width: 1440px;
    margin: 0 auto;
}

/* ══════════════════════ CARDS ══════════════════════ */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    transition: all var(--duration) var(--ease);
}

.card:hover {
    border-color: rgba(99, 102, 241, .2);
    box-shadow: var(--shadow-lg);
}

.card-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: .95rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.card-title svg {
    color: var(--accent);
    flex-shrink: 0;
}

.card-title-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.card-title-row .card-title {
    margin-bottom: 0;
}

.card-title-row .btn {
    margin-left: auto;
}

.toggle-hint {
    font-size: .78rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ══════════════════════ INPUTS ══════════════════════ */
.inputs-column {
    display: flex;
    flex-direction: column;
    gap: var(--gap);
}

.results-column {
    display: flex;
    flex-direction: column;
    gap: var(--gap);
}

.input-group {
    margin-bottom: 14px;
}

.input-group:last-child {
    margin-bottom: 0;
}

.input-group label {
    display: block;
    font-size: .8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.input-group input,
.input-group select {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: .9rem;
    font-weight: 500;
    transition: all var(--duration) var(--ease);
    outline: none;
}

.input-group input:focus,
.input-group select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.input-group input.invalid {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(248, 113, 113, .2);
}

.hint-msg {
    display: block;
    font-size: .75rem;
    margin-top: 6px;
    line-height: 1.4;
}

.hint-msg.warning {
    color: var(--warning);
    background: rgba(251, 191, 36, .1);
    padding: 8px;
    border-radius: 6px;
    border: 1px solid rgba(251, 191, 36, .2);
}

.hidden {
    display: none !important;
}

.error-msg {
    display: block;
    font-size: .75rem;
    color: var(--danger);
    margin-top: 4px;
    min-height: 0;
    opacity: 0;
    transition: opacity .2s;
}

.error-msg.visible {
    opacity: 1;
}

.input-row {
    display: flex;
    gap: 10px;
}

.flex-grow {
    flex: 1;
}

/* ══════════════════════ TOGGLE SWITCH ══════════════════════ */
.toggle-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 14px 0 4px;
}

.toggle-label {
    font-size: .8rem;
    font-weight: 600;
    color: var(--text-muted);
    transition: color var(--duration) var(--ease);
}

.active-label {
    color: var(--accent);
}

.toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 100px;
    cursor: pointer;
    transition: all var(--duration) var(--ease);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    left: 2px;
    top: 2px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all var(--duration) var(--ease);
}

.toggle-switch input:checked+.toggle-slider {
    background: var(--accent);
    border-color: var(--accent);
}

.toggle-switch input:checked+.toggle-slider::before {
    transform: translateX(20px);
    background: #fff;
}

.small-toggle {
    width: 36px;
    height: 20px;
}

.small-toggle .toggle-slider::before {
    width: 14px;
    height: 14px;
}

.small-toggle input:checked+.toggle-slider::before {
    transform: translateX(16px);
}

/* ══════════════════════ KPI CARDS ══════════════════════ */
.time-pills {
    display: flex;
    gap: 6px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.pill {
    padding: 5px 14px;
    border: 1px solid var(--border);
    border-radius: 100px;
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: .78rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--duration) var(--ease);
}

.pill:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.pill.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 10px;
}

.kpi-card {
    background: var(--kpi-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: all var(--duration) var(--ease);
    max-width: 100%;
    overflow: hidden;
}

.kpi-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
}

.kpi-primary {
    background: var(--kpi-primary-bg);
    border-color: transparent;
    grid-column: 1 / -1;
}

.kpi-primary .kpi-label {
    color: rgba(255, 255, 255, .8);
}

.kpi-primary .kpi-value {
    color: #fff;
    font-size: 1.6rem;
}

.kpi-label {
    display: block;
    font-size: .75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: .04em;
    overflow-wrap: anywhere;
    word-wrap: break-word;
    hyphens: auto;
}

.kpi-value {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -.01em;
}

/* ══════════════════════ CHART ══════════════════════ */
.chart-container {
    position: relative;
    width: 100%;
    height: 320px;
}

.chart-container canvas {
    width: 100% !important;
    height: 100% !important;
}

/* ══════════════════════ TABLE ══════════════════════ */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

#breakdownTable {
    width: 100%;
    border-collapse: collapse;
    font-size: .82rem;
}

#breakdownTable th {
    background: var(--bg-input);
    padding: 10px 14px;
    text-align: right;
    font-weight: 700;
    color: var(--text-secondary);
    white-space: nowrap;
    border-bottom: 1px solid var(--border);
}

#breakdownTable th:first-child {
    text-align: left;
}

#breakdownTable td {
    padding: 9px 14px;
    text-align: right;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

#breakdownTable td:first-child {
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
}

#breakdownTable tbody tr:hover {
    background: var(--accent-glow);
}

#breakdownTable tbody tr.month-row td {
    font-size: .78rem;
    color: var(--text-muted);
    padding: 6px 14px 6px 28px;
}

/* ══════════════════════ SCENARIOS ══════════════════════ */
.scenario-inputs {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 16px;
}

.scenario-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    flex-wrap: wrap;
    animation: slideIn .3s var(--ease);
}

.scenario-row .scenario-label {
    font-size: .8rem;
    font-weight: 700;
    min-width: 24px;
    flex-shrink: 0;
}

.scenario-row input {
    width: 90px;
    padding: 6px 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: var(--font);
    font-size: .8rem;
    font-weight: 500;
    outline: none;
    transition: border-color var(--duration) var(--ease);
}

.scenario-row input:focus {
    border-color: var(--accent);
}

.scenario-row label {
    font-size: .72rem;
    font-weight: 600;
    color: var(--text-muted);
}

.scenario-remove {
    margin-left: auto;
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: background var(--duration) var(--ease);
}

.scenario-remove:hover {
    background: rgba(248, 113, 113, .15);
}

.scenario-color {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* ══════════════════════ TOAST ══════════════════════ */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    padding: 12px 24px;
    background: var(--accent);
    color: #fff;
    font-family: var(--font);
    font-size: .85rem;
    font-weight: 600;
    border-radius: 100px;
    box-shadow: 0 8px 32px rgba(99, 102, 241, .4);
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: all .4s var(--ease);
}

.toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ══════════════════════ CAPTURE AREA (hidden) ══════════════════════ */
.capture-area {
    position: fixed;
    left: -9999px;
    top: 0;
    width: 720px;
    padding: 32px;
    background: #0b0f1a;
    color: #f0f2f8;
    font-family: 'Inter', sans-serif;
}

.capture-header h2 {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(90deg, #6366f1, #22d3ee);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.capture-kpis {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 20px;
}

.capture-kpi {
    background: rgba(99, 102, 241, .1);
    border: 1px solid rgba(99, 102, 241, .2);
    border-radius: 10px;
    padding: 14px;
}

.capture-kpi .label {
    font-size: .72rem;
    font-weight: 600;
    color: #8892a8;
    text-transform: uppercase;
    letter-spacing: .04em;
}

.capture-kpi .value {
    font-size: 1.1rem;
    font-weight: 800;
    color: #f0f2f8;
    margin-top: 2px;
}

.capture-chart {
    margin-bottom: 16px;
}

.capture-footer {
    font-size: .72rem;
    color: #5a6480;
    text-align: center;
}

/* ══════════════════════ HELPERS ══════════════════════ */
.hidden {
    display: none !important;
}

/* ══════════════════════ ANIMATIONS ══════════════════════ */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.card {
    animation: fadeIn .4s var(--ease);
}

/* ══════════════════════ RESPONSIVE ══════════════════════ */
@media (max-width: 900px) {
    .dashboard {
        grid-template-columns: 1fr;
        padding: var(--gap) 12px 40px;
    }

    .app-header {
        padding: 12px 14px;
    }

    .app-header h1 {
        font-size: 1.1rem;
    }

    .header-right .btn span {
        display: none;
    }

    .header-right .btn {
        padding: 8px;
    }

    .presets-bar {
        padding: 10px 14px;
    }

    .kpi-grid {
        grid-template-columns: 1fr 1fr;
    }

    .kpi-primary {
        grid-column: 1 / -1;
    }

    .chart-container {
        height: 260px;
    }

    .scenario-row input {
        width: 70px;
    }
}

@media (max-width: 480px) {
    .kpi-grid {
        grid-template-columns: 1fr;
    }

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

    .scenario-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .scenario-row input {
        width: 100%;
    }
}

/* ══════════════════════════════════════════════════════════
   FinCalc Pro — Mobile Optimization
   ══════════════════════════════════════════════════════════ */

@media (max-width: 768px) {

    /* ── Typography & Spacing ── */
    :root {
        --gap: 6px;
    }

    html,
    body {
        overflow-x: hidden;
        width: 100%;
        max-width: 100%;
    }

    /* ── Header Optimization ── */
    .app-header {
        padding: 8px 12px;
        width: 100%;
        max-width: 100vw;
    }

    .app-header h1 {
        font-size: 1.1rem;
    }

    .header-right .btn span {
        display: none;
        /* Hide 'Share', 'Export' labels on mobile */
    }

    .header-right .btn {
        padding: 8px;
        border-radius: 50%;
        /* Make them circular icon buttons */
    }

    /* ── Presets Bar ── */
    .presets-bar {
        padding: 8px 12px;
        width: 100%;
        max-width: 100vw;
        overflow-x: auto;
    }

    .presets-label {
        font-size: 0.75rem;
    }

    /* ── Dashboard Layout ── */
    .dashboard {
        grid-template-columns: 1fr;
        /* Single column stack */
        padding: var(--gap) 10px 40px;
        /* 10px side padding for compact fit */
        width: 100%;
        max-width: 100%;
        overflow-x: hidden;
    }

    /* ── KPI Cards ── */
    .kpi-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        /* 2x2 for secondary KPIs with absolute width limit */
        gap: 4px;
    }

    .kpi-primary {
        grid-column: 1 / -1;
    }

    .kpi-value {
        font-size: 1rem;
    }

    .kpi-primary .kpi-value {
        font-size: 1.4rem;
    }

    .inputs-column,
    .results-column {
        width: 100% !important;
        max-width: 100% !important;
        overflow-x: hidden;
        box-sizing: border-box !important;
    }

    .card {
        padding: 10px;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    .card-title {
        margin-bottom: 10px;
        font-size: 0.9rem;
    }

    .input-group {
        margin-bottom: 10px;
    }

    .input-group label {
        font-size: 0.75rem;
        margin-bottom: 2px;
    }

    .input-row {
        flex-direction: column;
        gap: 0;
    }

    .input-group input,
    .input-group select {
        padding: 8px 10px;
        /* Larger tap targets */
        font-size: 0.9rem;
        /* Prevent iOS zoom-in on focus */
    }

    .toggle-row {
        margin: 10px 0 2px;
    }

    .time-pills {
        margin-bottom: 10px;
    }

    .kpi-card {
        padding: 10px;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box !important;
    }

    /* ── Charts ── */
    .chart-container {
        height: 240px;
    }

    /* Force inflation input to sit nicely */
    #inflationGroup {
        margin-top: 12px;
        width: 100%;
    }

    /* ── Tables ── */
    .table-wrapper {
        margin: 0;
        /* Remove negative margin */
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    #breakdownTable {
        font-size: 0.65rem;
        /* Smaller font to fit 6 columns */
    }

    #breakdownTable td,
    #breakdownTable th {
        padding: 6px 4px;
        /* Tighter padding */
        white-space: normal !important;
    }

    /* ── Scenarios ── */
    .scenario-row {
        padding: 12px;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }

    .scenario-row input {
        width: 100%;
        padding: 10px;
    }

    .scenario-row label {
        margin-top: 4px;
    }

    .scenario-remove {
        position: absolute;
        top: 8px;
        right: 8px;
    }

    .scenario-row {
        position: relative;
        /* For the remove button */
    }

    /* ── Toast ── */
    .toast {
        width: calc(100% - 40px);
        text-align: center;
    }
}