/* ==========================================================================
   ROI Calculator - Styles v3
   SeenLabs Brand Colors + Light/Dark theme toggle
   Mobile responsive + enhanced animations
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables (Design Tokens) - SEENLABS BRAND COLORS
   Primary: #0f4c81 | Complementary: #ff974f | Analogous: #17a2b8
   Light: #d9e4ec | Dark: #072540 | Bright: #82d4f2
   -------------------------------------------------------------------------- */
: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;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* 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 - Light theme */
    --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);
}

/* --------------------------------------------------------------------------
   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;
    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);
}

.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: 320px 1fr;
    flex: 1;
    overflow: hidden;
}

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

    .preview {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: auto;
        max-height: 200px;
        border-right: none;
        border-top: 1px solid var(--border-color);
        z-index: 90;
        padding: var(--space-md);
        display: flex;
        flex-direction: row;
        gap: var(--space-md);
        overflow-x: auto;
    }

    .preview__header {
        display: none;
    }

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

    .preview__chart {
        display: none;
    }

    .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: 220px;
    }

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

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

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

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

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

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

    .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%;
    }
}

/* --------------------------------------------------------------------------
   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-lg);
    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::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.metric-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-md);
}

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

.metric-card--primary:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 0 60px rgba(99, 102, 241, 0.25);
}

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

.metric-card--primary .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: 1.75rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    transition: all var(--transition-base);
}

.metric-card__trend {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.6875rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: var(--space-sm);
}

.metric-card__trend--up {
    color: var(--success-light);
}

.preview__chart {
    flex: 1;
    min-height: 150px;
    max-height: 200px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    box-shadow: var(--shadow-card);
}

/* --------------------------------------------------------------------------
   Wizard Section
   -------------------------------------------------------------------------- */
.wizard {
    padding: var(--space-2xl);
    overflow-y: auto;
    max-width: 900px;
}

/* 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;
    box-shadow: var(--shadow-glow);
    animation: step-pulse 2s ease-in-out infinite;
}

@keyframes step-pulse {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
    }

    50% {
        box-shadow: 0 0 40px rgba(99, 102, 241, 0.5);
    }
}

.step--active .step__number {
    color: white;
}

.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 0.5s ease;
}

.wizard__step--active {
    display: block;
}

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

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

.wizard__title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.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);
}

/* --------------------------------------------------------------------------
   Quick Start Templates
   -------------------------------------------------------------------------- */
.templates {
    margin-bottom: var(--space-lg);
}

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

.templates__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-md);
}

.template-card {
    background: var(--bg-card);
    border: 1px 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;
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.template-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.template-card:hover {
    border-color: var(--accent);
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.template-card:hover::before {
    opacity: 0.05;
}

.template-card:hover .template-card__icon {
    transform: scale(1.2) rotate(5deg);
}

.template-card--active {
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
}

.template-card--active::before {
    opacity: 0.1;
}

.template-card__icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
    position: relative;
    transition: transform var(--transition-spring);
}

.template-card__name {
    font-weight: 600;
    margin-bottom: var(--space-xs);
    position: relative;
    color: var(--text-primary);
}

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

/* Divider */
.divider {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin: var(--space-xl) 0;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.divider span {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* --------------------------------------------------------------------------
   Form Elements
   -------------------------------------------------------------------------- */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.form-group--full {
    grid-column: 1 / -1;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
}

.form-label__value {
    color: var(--accent);
    font-weight: 600;
}

.form-input,
.form-select {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--space-md);
    font-size: 1rem;
    color: var(--text-primary);
    font-family: inherit;
    transition: all var(--transition-fast);
    width: 100%;
    box-shadow: var(--shadow-sm);
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
    transform: translateY(-1px);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpolyline points='6,9 12,15 18,9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    padding-right: calc(var(--space-md) * 2 + 16px);
}

.form-select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Input Group */
.form-input-group {
    display: flex;
    position: relative;
}

.form-input-group .form-input {
    flex: 1;
}

.form-input-group__prefix,
.form-input-group__suffix {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-weight: 500;
    pointer-events: none;
}

.form-input-group__prefix {
    left: var(--space-md);
}

.form-input-group__suffix {
    right: var(--space-md);
}

.form-input-group .form-input:has(+ .form-input-group__suffix),
.form-input-group__prefix+.form-input {
    padding-left: calc(var(--space-md) + 16px);
}

/* Range Slider */
.form-range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    outline: none;
    cursor: pointer;
    transition: background var(--transition-base);
}

.form-range:hover {
    background: var(--accent-gradient-soft);
}

.form-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    background: var(--accent-gradient);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.4);
    transition: all var(--transition-spring);
    border: 3px solid white;
}

.form-range::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.5);
}

.form-range::-webkit-slider-thumb:active {
    transform: scale(1.1);
}

.form-range::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: var(--accent);
    border-radius: 50%;
    cursor: pointer;
    border: 3px solid white;
}

.form-range__labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* --------------------------------------------------------------------------
   Advanced Settings
   -------------------------------------------------------------------------- */
.advanced {
    margin-top: var(--space-xl);
}

.advanced__toggle {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--space-md);
    background: var(--bg-glass);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    list-style: none;
    border: 1px solid transparent;
}

.advanced__toggle::-webkit-details-marker {
    display: none;
}

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

.advanced__toggle svg {
    transition: transform var(--transition-base);
}

.advanced[open] .advanced__toggle svg {
    transform: rotate(180deg);
}

.advanced[open] .advanced__toggle {
    border-color: var(--border-color);
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}

.advanced__content {
    padding: var(--space-lg);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    animation: expandDown 0.3s ease;
    background: var(--bg-card);
}

@keyframes expandDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

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

/* --------------------------------------------------------------------------
   Info Card
   -------------------------------------------------------------------------- */
.info-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--accent-gradient-soft);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-md);
    margin-top: var(--space-lg);
    transition: all var(--transition-base);
}

.info-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.info-card__icon {
    font-size: 1.5rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-5px);
    }
}

.info-card__title {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.info-card__value {
    font-size: 1.125rem;
    font-weight: 600;
}

/* --------------------------------------------------------------------------
   Benefit Cards
   -------------------------------------------------------------------------- */
.benefits-grid {
    display: grid;
    gap: var(--space-lg);
}

.benefit-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-spring);
    box-shadow: var(--shadow-card);
}

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

.benefit-card--active {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent), var(--shadow-glow);
}

.benefit-card__header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    cursor: pointer;
}

.benefit-card__toggle input {
    display: none;
}

.benefit-card__toggle label {
    display: block;
    width: 52px;
    height: 28px;
    background: var(--border-color);
    border-radius: 14px;
    position: relative;
    cursor: pointer;
    transition: background var(--transition-base);
}

.benefit-card__toggle label::after {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    background: white;
    border-radius: 50%;
    top: 3px;
    left: 3px;
    transition: all var(--transition-spring);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.benefit-card__toggle input:checked+label {
    background: var(--accent);
}

.benefit-card__toggle input:checked+label::after {
    transform: translateX(24px);
}

.benefit-card__icon {
    font-size: 1.5rem;
    transition: transform var(--transition-spring);
}

.benefit-card:hover .benefit-card__icon {
    transform: scale(1.1);
}

.benefit-card__info {
    flex: 1;
}

.benefit-card__name {
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.benefit-card__desc {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.benefit-card__body {
    display: none;
    padding: 0 var(--space-lg) var(--space-lg);
    animation: expandDown 0.3s ease;
}

.benefit-card--active .benefit-card__body {
    display: block;
}

.benefit-card__body .form-group {
    margin-bottom: var(--space-md);
}

.benefit-card__body .form-group:last-child {
    margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Results Section
   -------------------------------------------------------------------------- */
.results-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

@media (max-width: 768px) {
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.kpi-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    text-align: center;
    transition: all var(--transition-spring);
    box-shadow: var(--shadow-card);
}

.kpi-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

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

.kpi-card--highlight:hover {
    box-shadow: 0 0 60px rgba(99, 102, 241, 0.3);
}

.kpi-card--highlight .kpi-card__label,
.kpi-card--highlight .kpi-card__context {
    color: rgba(255, 255, 255, 0.8);
}

.kpi-card--highlight .kpi-card__value {
    color: white;
}

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

.kpi-card__value {
    font-size: 1.75rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.kpi-card__context {
    font-size: 0.6875rem;
    color: var(--text-muted);
    margin-top: var(--space-sm);
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

@media (max-width: 768px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-card);
    height: 300px;
}

.chart-card__title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.chart-card__subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
}

.chart-card--full {
    grid-column: 1 / -1;
}

.chart-card canvas {
    max-height: 230px;
}

/* Summary Card */
.summary-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-2xl);
    box-shadow: var(--shadow-card);
}

.summary-card__title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.summary-table {
    width: 100%;
    border-collapse: collapse;
}

.summary-table td {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--border-color);
}

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

.summary-table__highlight td {
    font-weight: 600;
    font-size: 1.125rem;
    padding-top: var(--space-lg);
}

.text-right {
    text-align: right;
}

.text-success {
    color: var(--success);
}

/* Export Actions */
.export-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all var(--transition-spring);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(rgba(255, 255, 255, 0.2), transparent);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.btn:hover::after {
    opacity: 1;
}

.btn--primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn--primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}

.btn--primary:active {
    transform: translateY(-1px) scale(0.98);
}

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

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

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

.btn--ghost:hover {
    color: var(--text-primary);
    background: var(--bg-glass);
}

.btn--lg {
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.hidden {
    display: none !important;
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(10px) scale(0.9);
    }

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

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-count {
    animation: countUp 0.5s ease;
}

/* Number animation on value change */
.value-changed {
    animation: countUp 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Loading shimmer effect */
.loading {
    background: linear-gradient(90deg, var(--bg-card) 0%, var(--bg-glass) 50%, var(--bg-card) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* Ripple effect on click */
@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

.btn .ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    transform: scale(0);
    animation: ripple 0.6s linear;
    pointer-events: none;
}

/* --------------------------------------------------------------------------
   Assumptions Table
   -------------------------------------------------------------------------- */
.assumptions {
    margin-top: var(--space-lg);
}

.assumptions__toggle {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.875rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--space-md);
    background: var(--bg-glass);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    list-style: none;
    border: 1px solid transparent;
}

.assumptions__toggle::-webkit-details-marker {
    display: none;
}

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

.assumptions__toggle svg {
    flex-shrink: 0;
}

.assumptions[open] .assumptions__toggle {
    border-color: var(--border-color);
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}

.assumptions__content {
    padding: var(--space-lg);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
    animation: expandDown 0.3s ease;
    background: var(--bg-card);
    overflow-x: auto;
}

.assumptions-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.assumptions-table th {
    text-align: left;
    padding: var(--space-sm) var(--space-md);
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
}

.assumptions-table td {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

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

.assumptions-table .source {
    color: var(--text-muted);
    font-size: 0.75rem;
    font-style: italic;
}

.assumptions-table .value {
    font-weight: 600;
    color: var(--accent);
}

/* --------------------------------------------------------------------------
   Lead Capture Modal
   -------------------------------------------------------------------------- */
.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
}

.modal--active {
    display: flex;
}

.modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal__content {
    position: relative;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    max-width: 420px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    animation: modalSlideIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

.modal__close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

.modal__header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.modal__icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    animation: float 3s ease-in-out infinite;
}

.modal__title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal__subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

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

.modal__form .form-group {
    margin-bottom: 0;
}

.modal__disclaimer {
    font-size: 0.6875rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: var(--space-sm);
}

/* Mobile modal adjustments */
@media (max-width: 640px) {
    .modal {
        padding: var(--space-md);
    }

    .modal__content {
        padding: var(--space-lg);
    }

    .modal__title {
        font-size: 1.25rem;
    }
}

/* --------------------------------------------------------------------------
   Input Warnings & Hints
   -------------------------------------------------------------------------- */
.input-warning {
    font-size: 0.75rem;
    color: var(--warning);
    padding: var(--space-sm) var(--space-md);
    background: rgba(245, 158, 11, 0.1);
    border-radius: var(--radius-sm);
    margin-top: var(--space-sm);
    display: flex;
    align-items: flex-start;
    gap: var(--space-xs);
    line-height: 1.4;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.form-hint {
    font-size: 0.6875rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* --------------------------------------------------------------------------
   Scenario Comparison
   -------------------------------------------------------------------------- */
.scenarios {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    animation: slideIn 0.3s ease;
}

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

.scenarios__table-wrapper {
    overflow-x: auto;
    margin-bottom: var(--space-md);
}

.scenarios-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.scenarios-table th {
    text-align: left;
    padding: var(--space-sm) var(--space-md);
    color: var(--text-muted);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
}

.scenarios-table td {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

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

.scenarios-table .scenario-name {
    font-weight: 600;
    color: var(--accent);
}

.scenarios-table .npv-positive {
    color: var(--success);
    font-weight: 600;
}

.scenarios-table .npv-negative {
    color: var(--danger);
    font-weight: 600;
}

.scenarios-table .btn-delete {
    padding: var(--space-xs);
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.scenarios-table .btn-delete:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

/* --------------------------------------------------------------------------
   FAQ Modal
   -------------------------------------------------------------------------- */
.btn--icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--accent);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

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

.btn__icon-text {
    line-height: 1;
}

.faq-modal {
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
}

.faq-modal__content {
    margin-top: var(--space-lg);
}

.faq__item {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-sm);
    overflow: hidden;
}

.faq__question {
    padding: var(--space-md) var(--space-lg);
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9375rem;
}

.faq__question::-webkit-details-marker {
    display: none;
}

.faq__question::after {
    content: '+';
    font-size: 1.25rem;
    color: var(--accent);
    transition: transform var(--transition-fast);
}

details[open] .faq__question::after {
    content: '−';
}

.faq__answer {
    padding: 0 var(--space-lg) var(--space-md);
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.875rem;
}