/* ==========================================================================
   Trade Show TCO Calculator - Styles
   SeenLabs Brand Colors + Light/Dark theme toggle
   Mobile responsive + Safari compatible (no :has(), no ?.)
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables (Design Tokens) - SEENLABS BRAND COLORS
   Primary: #0f4c81 | Complementary: #ff974f | Analogous: #17a2b8
   -------------------------------------------------------------------------- */
:root {
    /* Light Theme Colors */
    --bg-primary: #f4f7fa;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-card-hover: rgba(255, 255, 255, 1);
    --bg-glass: rgba(15, 76, 129, 0.03);
    --border-color: rgba(7, 37, 64, 0.1);
    --border-color-hover: rgba(7, 37, 64, 0.2);

    --text-primary: #072540;
    --text-secondary: #4a6582;
    --text-muted: #7a93a9;

    /* Accent - SeenLabs Primary Blue */
    --accent: #0f4c81;
    --accent-light: #17a2b8;
    --accent-dark: #072540;
    --accent-gradient: linear-gradient(135deg, #0f4c81 0%, #17a2b8 100%);
    --accent-gradient-soft: linear-gradient(135deg, rgba(15, 76, 129, 0.1) 0%, rgba(23, 162, 184, 0.1) 100%);

    /* Status Colors */
    --success: #10b981;
    --success-light: #34d399;
    --warning: #ff974f;
    --danger: #ef4444;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(7, 37, 64, 0.08), 0 1px 2px rgba(7, 37, 64, 0.04);
    --shadow-md: 0 4px 12px rgba(7, 37, 64, 0.08), 0 2px 4px rgba(7, 37, 64, 0.04);
    --shadow-lg: 0 10px 40px rgba(7, 37, 64, 0.12), 0 4px 12px rgba(7, 37, 64, 0.06);
    --shadow-glow: 0 0 40px rgba(15, 76, 129, 0.15);
    --shadow-card: 0 2px 8px rgba(7, 37, 64, 0.04), 0 1px 2px rgba(7, 37, 64, 0.02);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    --transition-spring: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(26, 26, 38, 0.8);
    --bg-card-hover: rgba(35, 35, 50, 0.9);
    --bg-glass: rgba(255, 255, 255, 0.03);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-hover: rgba(255, 255, 255, 0.15);

    --text-primary: #ffffff;
    --text-secondary: #a0a0b8;
    --text-muted: #6b6b80;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.2);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

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

/* Screen reader only - for SEO H1 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* --------------------------------------------------------------------------
   App Layout
   -------------------------------------------------------------------------- */
.app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-xl);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    transition: background var(--transition-base), border-color var(--transition-base);
}

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.header__home-link {
    display: flex;
    align-items: center;
    transition: opacity var(--transition-fast);
    text-decoration: none;
}

.header__home-link:hover {
    opacity: 0.8;
}

.header__logo-img {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
}

.header__title-group {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.header__brand {
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.header__title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent);
}

.header__actions {
    display: flex;
    gap: var(--space-sm);
    align-items: center;
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--text-secondary);
}

.theme-toggle:hover {
    background: var(--bg-card);
    color: var(--text-primary);
    transform: rotate(15deg);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.theme-toggle .icon-moon {
    display: block;
}

.theme-toggle .icon-sun {
    display: none;
}

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

[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}

/* Main Layout */
.main {
    display: grid;
    grid-template-columns: 280px 1fr;
    flex: 1;
    overflow: hidden;
}

/* --------------------------------------------------------------------------
   Live Preview Sidebar
   -------------------------------------------------------------------------- */
.preview {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    position: sticky;
    top: 65px;
    height: calc(100vh - 65px);
    overflow-y: auto;
    transition: background var(--transition-base), border-color var(--transition-base);
}

.preview__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.preview__title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.preview__badge {
    font-size: 0.625rem;
    padding: var(--space-xs) var(--space-sm);
    background: var(--accent-gradient);
    color: white;
    border-radius: 100px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    animation: pulse-badge 2s ease-in-out infinite;
}

@keyframes pulse-badge {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(0.98); }
}

.preview__metrics {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

/* Metric Cards */
.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    transition: all var(--transition-spring);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.metric-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.metric-card--primary {
    background: var(--accent-gradient);
    border: none;
    box-shadow: var(--shadow-glow);
}

.metric-card--primary .metric-card__label {
    color: rgba(255, 255, 255, 0.8);
}

.metric-card--primary .metric-card__value {
    color: white;
}

.metric-card--success {
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    border: none;
}

.metric-card--success .metric-card__label {
    color: rgba(255, 255, 255, 0.8);
}

.metric-card--success .metric-card__value {
    color: white;
}

.metric-card__label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.metric-card__value {
    font-size: 1.5rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

/* --------------------------------------------------------------------------
   Wizard Section
   -------------------------------------------------------------------------- */
.wizard {
    padding: var(--space-2xl);
    overflow-y: auto;
    max-width: 800px;
}

/* Step Indicators */
.steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: var(--space-2xl);
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    cursor: pointer;
    transition: all var(--transition-base);
}

.step__number {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    font-weight: 600;
    font-size: 0.875rem;
    transition: all var(--transition-spring);
    box-shadow: var(--shadow-sm);
}

.step:hover .step__number {
    transform: scale(1.1);
    border-color: var(--accent);
}

.step__label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    transition: color var(--transition-base);
}

.step--active .step__number {
    background: var(--accent-gradient);
    border-color: transparent;
    color: white;
    box-shadow: var(--shadow-glow);
}

.step--active .step__label {
    color: var(--text-primary);
}

.step--completed .step__number {
    background: var(--success);
    border-color: transparent;
    color: white;
}

.step__connector {
    width: 60px;
    height: 3px;
    background: var(--border-color);
    margin: 0 var(--space-sm);
    margin-bottom: 20px;
    transition: background var(--transition-base);
    border-radius: 2px;
}

.step--completed + .step__connector {
    background: var(--success);
}

/* Wizard Steps Content */
.wizard__step {
    display: none;
    animation: slideIn 0.4s ease;
}

.wizard__step--active {
    display: block;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

.wizard__title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.wizard__subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: var(--space-xl);
}

/* Wizard Navigation */
.wizard__nav {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-2xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-color);
}

/* --------------------------------------------------------------------------
   Form Elements
   -------------------------------------------------------------------------- */
.form-section {
    margin-bottom: var(--space-xl);
}

.form-section__title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* Slider */
.slider-group {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.slider {
    -webkit-appearance: none;
    appearance: none;
    flex: 1;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    outline: none;
    transition: background var(--transition-base);
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    background: var(--accent-gradient);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-spring);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.slider-value {
    min-width: 80px;
    text-align: right;
    font-weight: 600;
    font-size: 1rem;
    color: var(--accent);
}

/* Select */
.select {
    width: 100%;
    padding: var(--space-md);
    font-size: 1rem;
    font-family: var(--font-sans);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

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

.select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.1);
}

/* Number Input */
.input-number {
    width: 100%;
    padding: var(--space-md);
    font-size: 1rem;
    font-family: var(--font-sans);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: all var(--transition-base);
}

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

.input-number:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.1);
}

/* Toggle */
.toggle-group {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.toggle {
    position: relative;
    width: 52px;
    height: 28px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--border-color);
    border-radius: 14px;
    cursor: pointer;
    transition: background var(--transition-base);
}

.toggle:checked {
    background: var(--success);
}

.toggle::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 24px;
    height: 24px;
    background: white;
    border-radius: 50%;
    transition: transform var(--transition-spring);
    box-shadow: var(--shadow-sm);
}

.toggle:checked::before {
    transform: translateX(24px);
}

.toggle-label {
    font-size: 0.875rem;
    color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   Option Cards (Visual Selection)
   -------------------------------------------------------------------------- */
.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-md);
}

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

.options-grid--3col {
    grid-template-columns: repeat(3, 1fr);
}

.option-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-spring);
    position: relative;
}

.option-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.option-card--active {
    border-color: var(--accent);
    background: var(--accent-gradient-soft);
    box-shadow: var(--shadow-glow);
}

.option-card__icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.option-card__title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.option-card__desc {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: 0.9375rem;
    font-weight: 600;
    font-family: var(--font-sans);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    border: none;
}

.btn--primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn--secondary:hover {
    border-color: var(--accent);
    background: var(--bg-card-hover);
}

.btn--success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn--success:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn--icon {
    padding: var(--space-sm) var(--space-md);
}

.btn svg {
    width: 18px;
    height: 18px;
}

/* --------------------------------------------------------------------------
   Results Section
   -------------------------------------------------------------------------- */
.results {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.results__hero {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    color: white;
    box-shadow: 0 8px 32px rgba(16, 185, 129, 0.3);
}

.results__hero-label {
    font-size: 0.875rem;
    opacity: 0.8;
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.results__hero-value {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--space-sm);
}

.results__hero-subtitle {
    font-size: 1.125rem;
    opacity: 0.9;
}

.results__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.results__card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    text-align: center;
}

.results__card-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.results__card-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.results__card-subvalue {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--space-xs);
}

/* Electrical Callout */
.callout {
    background: #fffbeb;
    border: 1px solid #fcd34d;
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

[data-theme="dark"] .callout {
    background: rgba(251, 191, 36, 0.1);
    border-color: rgba(251, 191, 36, 0.3);
}

.callout__icon {
    font-size: 2rem;
}

.callout__content {
    flex: 1;
}

.callout__title {
    font-weight: 700;
    color: #d97706;
    margin-bottom: var(--space-xs);
}

.callout__desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Chart Container */
.chart-container {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
}

.chart-container__title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.chart-wrapper {
    height: 300px;
    position: relative;
}

/* Year Table */
.year-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.year-table th,
.year-table td {
    padding: var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.year-table th {
    background: var(--bg-glass);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.year-table .total-row {
    background: var(--accent-gradient);
    color: white;
}

.year-table .total-row td {
    border-bottom: none;
}

.year-table .savings-cell {
    color: var(--success);
    font-weight: 600;
}

.year-table .total-row .savings-cell {
    color: white;
}

/* Export Actions */
.export-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    margin-top: var(--space-xl);
}

/* --------------------------------------------------------------------------
   Advanced Settings
   -------------------------------------------------------------------------- */
.advanced-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    width: 100%;
    text-align: left;
    font-family: var(--font-sans);
    margin-top: var(--space-xl);
}

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

.advanced-toggle__icon {
    transition: transform var(--transition-base);
}

.advanced-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.advanced--open {
    max-height: 500px;
}

.advanced-content__inner {
    padding: var(--space-lg) 0;
}

/* --------------------------------------------------------------------------
   Modal
   -------------------------------------------------------------------------- */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
}

.modal--active {
    display: flex;
}

.modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
}

.modal__content {
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    max-width: 420px;
    width: 90%;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal__close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: var(--bg-glass);
    border-radius: 50%;
    cursor: pointer;
    color: var(--text-muted);
    transition: all var(--transition-base);
}

.modal__close:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.modal__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.modal__subtitle {
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.modal__form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.modal__input {
    width: 100%;
    padding: var(--space-md);
    font-size: 1rem;
    font-family: var(--font-sans);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.modal__input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.1);
}

/* Large Modal variant */
.modal__content--large {
    max-width: 640px;
    max-height: 85vh;
    overflow-y: auto;
}

/* Modal body content */
.modal__body {
    margin-top: var(--space-lg);
    line-height: 1.7;
}

.modal__body h4 {
    font-size: 1rem;
    font-weight: 700;
    margin: var(--space-lg) 0 var(--space-sm);
    color: var(--text-primary);
}

.modal__body h4:first-child {
    margin-top: 0;
}

.modal__body p {
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.modal__body ul {
    padding-left: var(--space-lg);
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.modal__body li {
    margin-bottom: var(--space-xs);
}

.modal__body strong {
    color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   Mobile Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .main {
        grid-template-columns: 1fr;
    }

    .preview {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: auto;
        max-height: 160px;
        border-right: none;
        border-top: 1px solid var(--border-color);
        z-index: 90;
        padding: var(--space-md);
        flex-direction: row;
        gap: var(--space-md);
        overflow-x: auto;
    }

    .preview__header {
        display: none;
    }

    .preview__metrics {
        flex-direction: row;
        gap: var(--space-sm);
    }

    .metric-card {
        min-width: 120px;
        padding: var(--space-sm) var(--space-md);
    }

    .metric-card__value {
        font-size: 1.25rem;
    }

    .wizard {
        padding: var(--space-lg);
        padding-bottom: 180px;
    }

    .header {
        padding: var(--space-sm) var(--space-md);
    }

    .header__actions .btn span {
        display: none;
    }
}

@media (max-width: 640px) {
    .options-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .options-grid--3col {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .results__hero-value {
        font-size: 2.25rem;
    }

    .wizard__title {
        font-size: 1.5rem;
    }

    .steps {
        gap: 0;
    }

    .step__connector {
        width: 30px;
    }

    .step__label {
        display: none;
    }

    .export-actions {
        flex-direction: column;
    }

    .export-actions .btn {
        width: 100%;
    }

    .chart-wrapper {
        height: 250px;
    }

    .year-table {
        font-size: 0.75rem;
    }

    .year-table th,
    .year-table td {
        padding: var(--space-sm);
    }
}