/* CSS Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* UPenn Color Palette */
    --upenn-blue: #003A70;
    --upenn-red: #A50034;
    --upenn-gray: #A7A8AA;
    --upenn-dark-blue: #002855;
    --upenn-light-blue: #0056b3;
    --upenn-light-gray: #f5f5f5;
    --upenn-text: #333333;
    --upenn-text-light: #666666;
    --upenn-border: #e0e0e0;
    --upenn-hover: #f8f9fa;
    --upenn-gradient: linear-gradient(135deg, var(--upenn-blue) 0%, var(--upenn-dark-blue) 100%);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Fira Code', 'Consolas', 'Monaco', monospace;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;

    /* Layout */
    --max-width: 1200px;
    --border-radius: 8px;
    --box-shadow: 0 4px 20px rgba(0, 58, 112, 0.1);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: var(--font-primary);
    background-color: white;
    color: var(--upenn-text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Matrix Background Animation */
.matrix-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background:
        radial-gradient(circle at 20% 50%, rgba(0, 58, 112, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(165, 0, 52, 0.02) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(167, 168, 170, 0.03) 0%, transparent 50%),
        white;
    animation: genaiPulse 20s ease-in-out infinite;
}

@keyframes genaiPulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    color: var(--upenn-blue);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    background: var(--upenn-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-description {
    text-align: center;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
    color: var(--upenn-text-light);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--upenn-border);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.nav-brand h1 {
    font-size: 1.5rem;
    color: var(--upenn-blue);
    margin: 0;
    font-family: var(--font-mono);
}

.nav-brand h1 a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.nav-brand h1 a:hover {
    opacity: 0.8;
}

.subtitle {
    font-size: 0.875rem;
    color: var(--upenn-text-light);
    opacity: 0.8;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-menu a {
    color: var(--upenn-text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a:hover {
    color: var(--upenn-blue);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--upenn-blue);
    transition: var(--transition);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--upenn-blue);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.accent {
    background: var(--upenn-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    color: var(--upenn-text-light);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--upenn-blue);
    color: white;
}

.btn-primary:hover {
    background: var(--upenn-dark-blue);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--upenn-blue);
    border: 2px solid var(--upenn-blue);
}

.btn-secondary:hover {
    background: var(--upenn-blue);
    color: white;
    transform: translateY(-2px);
}

/* GenAI Pillars */
.genai-pillars {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.pillar {
    background: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--upenn-border);
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.pillar:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 58, 112, 0.15);
}

.pillar-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.pillar h3 {
    color: var(--upenn-blue);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

/* Decision workspace: sidebar form + live results */
.decision-workspace {
    padding: 88px 0 64px;
    background: #f4f6f8;
    scroll-margin-top: 72px;
    min-height: calc(100vh - 72px);
}

.container-wide {
    max-width: 1280px;
}

.workspace-header {
    margin-bottom: 18px;
}

.workspace-header-row {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.workspace-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: #01256e;
    margin: 0;
    line-height: 1.25;
}

.workspace-lead {
    margin: 0;
    color: #6b7280;
    font-size: 0.9rem;
    line-height: 1.4;
}

.workspace-lead a {
    color: #01256e;
    font-weight: 500;
}

.decision-layout {
    display: grid;
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
}

.decision-sidebar {
    position: sticky;
    top: 76px;
    max-height: calc(100vh - 92px);
    overflow-y: auto;
    background: white;
    padding: 16px 14px;
    border-radius: 10px;
    border: 1px solid #e5e7eb;
}

.form-section {
    border: none;
    margin: 0 0 4px;
    padding: 0 0 14px;
    min-width: 0;
    border-bottom: 1px solid #eef0f3;
}

.form-section:last-of-type {
    border-bottom: none;
    padding-bottom: 4px;
}

.form-section-title {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px;
    font-size: 0.78rem;
    font-weight: 700;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 10px;
    padding: 0;
    float: none;
    width: 100%;
}

.form-section-link {
    font-size: 0.72rem;
    font-weight: 500;
    text-transform: none;
    letter-spacing: 0;
    color: #01256e;
    text-decoration: none;
}

.form-section-link:hover {
    text-decoration: underline;
}

.wizard-hint {
    color: #6b7280;
    font-size: 0.8rem;
    margin-bottom: 10px;
    line-height: 1.4;
}

.sidebar-actions {
    margin-top: 4px;
    padding-top: 10px;
    border-top: 1px solid #eef0f3;
}

.btn-text {
    background: none;
    border: none;
    color: #01256e;
    font: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0;
    cursor: pointer;
}

.btn-text:hover {
    text-decoration: underline;
}

.decision-results-pane {
    min-width: 0;
    scroll-margin-top: 88px;
}

.results-toolbar {
    display: flex;
    flex-direction: column;
    gap: 2px;
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid #e5e7eb;
}

.results-heading {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
    color: #01256e;
}

.results-sub {
    margin: 0;
    color: #6b7280;
    font-size: 0.85rem;
    line-height: 1.4;
}

.results-empty {
    display: none;
}

.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;
}

.risk-segment {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    margin-bottom: 8px;
}

.risk-seg {
    cursor: pointer;
}

.risk-seg input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.risk-seg span {
    display: block;
    text-align: center;
    padding: 8px 6px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #374151;
    background: #fff;
    transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.risk-seg input:focus-visible + span {
    box-shadow: 0 0 0 3px rgba(1, 37, 110, 0.15);
}

.risk-seg input:checked + span {
    border-color: #01256e;
    background: #01256e;
    color: #fff;
}

.risk-hint {
    margin: 0 0 12px;
    color: #6b7280;
    font-size: 0.78rem;
    line-height: 1.4;
    min-height: 2.2em;
}

.chip-checks {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.chip-check {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 0.78rem;
    color: #374151;
    border: 1px solid #d1d5db;
    border-radius: 999px;
    padding: 5px 10px;
    background: #fff;
    user-select: none;
}

.chip-check input {
    margin: 0;
    accent-color: #01256e;
}

.chip-check:has(input:checked) {
    border-color: #01256e;
    background: rgba(1, 37, 110, 0.06);
    color: #01256e;
}

.chip-check[hidden] {
    display: none !important;
}

.chip-check-block {
    margin-top: 8px;
    width: 100%;
    box-sizing: border-box;
    border-radius: 8px;
}

.pref-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.pref-span {
    grid-column: 1 / -1;
}

.field-note {
    margin: 8px 0 0;
    font-size: 0.75rem;
    color: #6b7280;
    line-height: 1.4;
}

.field-note.warning-note {
    color: #9f1239;
    background: #fff1f2;
    border-left: 3px solid #e11d48;
    padding: 8px 10px;
    border-radius: 4px;
}

.field-note a,
.linkish {
    color: #01256e;
    background: none;
    border: none;
    padding: 0;
    font: inherit;
    cursor: pointer;
    text-decoration: underline;
}

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

.form-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: #6b7280;
    margin-bottom: 4px;
}

.form-group select,
.decision-sidebar select {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font: inherit;
    font-size: 0.85rem;
    background: #fff;
    color: #1f2937;
}

.form-group select:focus {
    outline: none;
    border-color: #01256e;
    box-shadow: 0 0 0 3px rgba(1, 37, 110, 0.1);
}

.decision-results {
    margin: 0 0 12px;
}

.decision-results[hidden] {
    display: none !important;
}

.match-why {
    margin: 4px 0 8px;
    font-size: 0.78rem;
    color: #01256e;
    line-height: 1.35;
}

.solution-card.recommended {
    border-color: #01256e;
    background: #f8fafc;
}

.solution-card.recommended::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: #01256e;
}

.blocked-strip {
    margin-bottom: 12px;
    padding: 8px 12px;
    background: #fff7ed;
    border: 1px solid #fed7aa;
    border-radius: 8px;
    font-size: 0.82rem;
    color: #9a3412;
}

.blocked-strip summary {
    cursor: pointer;
    font-weight: 600;
}

.blocked-strip ul {
    margin: 8px 0 0;
    padding-left: 18px;
}

.blocked-strip li {
    color: #7c2d12;
    margin-bottom: 4px;
    line-height: 1.35;
}

.cards-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 0;
}

.solution-card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 10px;
    padding: 14px 16px;
    transition: border-color 0.15s ease, background 0.15s ease;
    position: relative;
    overflow: hidden;
}

.solution-card:hover {
    border-color: #94a3b8;
}

.solution-card.hidden {
    display: none;
}

.card-main {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 12px 14px;
    align-items: start;
}

.card-icon {
    font-size: 1.35rem;
    line-height: 1.4;
    flex-shrink: 0;
}

.card-body {
    min-width: 0;
}

.card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 4px;
    gap: 10px;
}

.card-header h3 {
    margin: 0;
    font-size: 1rem;
    font-weight: 700;
    color: #1f2937;
    flex-grow: 1;
    line-height: 1.3;
}

.card-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    justify-content: flex-end;
    flex-shrink: 0;
}

.card-badge {
    background: #01256e;
    color: white;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.card-status {
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.card-status.status-pilot {
    background: #ecfdf5;
    color: #047857;
    border: 1px solid #a7f3d0;
}

.card-status.status-in-review {
    background: #fffbeb;
    color: #b45309;
    border: 1px solid #fcd34d;
}

.card-status.status-draft {
    background: #f3f4f6;
    color: #6b7280;
    border: 1px solid #e5e7eb;
}

.card-description {
    color: #4b5563;
    margin: 0 0 4px;
    font-size: 0.88rem;
    line-height: 1.45;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    margin: 0 0 6px;
    color: #6b7280;
    font-size: 0.75rem;
    line-height: 1.35;
}

.card-more {
    margin-top: 4px;
}

.card-more summary {
    cursor: pointer;
    color: #01256e;
    font-size: 0.8rem;
    font-weight: 600;
    user-select: none;
}

.card-details {
    margin-top: 10px;
    padding-top: 10px;
    border-top: 1px solid #eef0f3;
}

.detail-item {
    margin-bottom: 10px;
    font-size: 0.85rem;
}

.detail-item:last-child {
    margin-bottom: 0;
}

.detail-item strong {
    color: #1f2937;
    font-weight: 600;
    display: block;
    margin-bottom: 2px;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: #6b7280;
}

.detail-item ul {
    margin: 4px 0 0;
    padding-left: 18px;
}

.detail-item li {
    color: #4b5563;
    margin-bottom: 2px;
    line-height: 1.4;
}

.card-link {
    display: inline-flex;
    align-items: center;
    color: #01256e;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.8rem;
    white-space: nowrap;
    align-self: center;
}

.card-link:hover {
    text-decoration: underline;
}

@media (max-width: 720px) {
    .card-main {
        grid-template-columns: auto 1fr;
    }

    .card-link {
        grid-column: 2;
        align-self: start;
    }
}

/* Filter Results */
.filter-results {
    margin-bottom: 32px;
    padding: 16px 24px;
    background: #f3f4f6;
    border-radius: 8px;
    border-left: 4px solid #01256e;
}

.filter-results h3 {
    margin: 0 0 8px 0;
    color: #1f2937;
    font-size: 18px;
}

.filter-results p {
    margin: 0;
    color: #6b7280;
}

.no-results {
    text-align: center;
    padding: 60px 20px;
    color: #6b7280;
}

.no-results h3 {
    margin-bottom: 16px;
    color: #1f2937;
}

.no-results p {
    margin-bottom: 24px;
}

/* Responsible use guidance */
.guidance {
    padding: var(--spacing-xxl) 0;
    scroll-margin-top: 72px;
}

.guidance-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.guidance-card {
    background: white;
    border: 1px solid var(--upenn-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
}

.guidance-card h3 {
    margin: 0 0 var(--spacing-sm);
    font-size: 1.25rem;
}

.guidance-card p {
    margin: 0 0 var(--spacing-sm);
    color: var(--upenn-text);
}

.guidance-card ul {
    margin: 0;
    padding-left: 1.25rem;
}

.guidance-card li {
    margin-bottom: 0.5rem;
    line-height: 1.5;
}

.guidance-card li:last-child {
    margin-bottom: 0;
}

.guidance-card code {
    font-family: var(--font-mono);
    font-size: 0.9em;
    background: var(--upenn-light-gray);
    padding: 0.1em 0.35em;
    border-radius: 4px;
}

.guidance-refs {
    font-size: 0.9rem;
    color: var(--upenn-text-light);
    line-height: 1.7;
}

.guidance-refs a {
    color: var(--upenn-blue);
}

/* Footer */
.footer {
    background: var(--upenn-blue);
    color: white;
    text-align: center;
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xxl);
}

.footer a {
    color: rgba(255, 255, 255, 0.95);
    text-decoration: underline;
    text-underline-offset: 0.15em;
}

.footer a:hover {
    color: white;
}

/* Responsive Design */
@media (max-width: 960px) {
    .decision-layout {
        grid-template-columns: 1fr;
    }

    .decision-sidebar {
        position: static;
        max-height: none;
        overflow: visible;
    }

    .results-toolbar {
        position: static;
        background: transparent;
        backdrop-filter: none;
        padding: 0 0 12px;
        margin: 0 0 8px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

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

    .genai-pillars {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .btn {
        padding: 10px 20px;
        font-size: 0.875rem;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

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

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

::-webkit-scrollbar-thumb:hover {
    background: var(--upenn-dark-blue);
}

/* Selection Styling */
::selection {
    background: var(--upenn-blue);
    color: white;
}

/* Focus Styling */
*:focus {
    outline: 2px solid var(--upenn-blue);
    outline-offset: 2px;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-primary {
    color: var(--upenn-blue);
}

.text-accent {
    color: var(--upenn-red);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--upenn-border);
    border-radius: 50%;
    border-top-color: var(--upenn-blue);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* UPenn Color Classes */
.primary-color {
    color: var(--upenn-blue);
}

.secondary-color {
    color: var(--upenn-red);
}

.background-color {
    background-color: var(--upenn-gray);
}

.result-actions {
    margin-top: var(--spacing-xl);
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.result-actions .btn {
    min-width: 140px;
}

.service-benefits {
    margin-bottom: var(--spacing-md);
}

.service-benefits strong,
.service-details strong,
.pricing-info strong,
.data-risk-info strong {
    color: var(--upenn-blue);
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
}

.service-benefits ul,
.service-details ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.service-benefits li,
.service-details li {
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid rgba(0, 58, 112, 0.1);
    font-size: 0.9rem;
    color: var(--upenn-text);
}

.service-benefits li:last-child,
.service-details li:last-child {
    border-bottom: none;
}

.pricing-info p,
.data-risk-info p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--upenn-text);
    font-weight: 500;
}