/* ==========================================================================
THE OTHER WAY • FIELD UTILITIES & BUILDER NETWORK
Universal Shared Design System & Responsive Layout Tokens
========================================================================== */

:root {
--bg-canvas: #f8fafc;
--bg-card: #ffffff;
--bg-subtle: #f1f5f9;
--bg-contrast: #0f172a;

--border-dim: #e2e8f0;
--border-strong: #cbd5e1;
--border-focus: #f59e0b;

--accent-amber: #d97706;
--accent-amber-light: #fef3c7;
--accent-amber-glow: rgba(217, 119, 6, 0.15);
--accent-blue: #0284c7;
--accent-blue-subtle: #e0f2fe;

--status-pass: #16a34a;
--status-pass-bg: #dcfce7;
--status-warn: #dc2626;
--status-warn-bg: #fee2e2;

--text-primary: #0f172a;
--text-secondary: #475569;
--text-tertiary: #64748b;
--text-inverse: #ffffff;

--font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
--font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

--shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
--shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
--shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);

--radius-sm: 6px;
--radius-md: 10px;
--radius-lg: 14px;
}

/* Base Reset & Geometry */

{
box-sizing: border-box;
margin: 0;
padding: 0;
-webkit-tap-highlight-color: transparent;
}

body {
background-color: var(--bg-canvas);
color: var(--text-primary);
font-family: var(--font-sans);
line-height: 1.6;
min-height: 100vh;
display: flex;
flex-direction: column;
-webkit-font-smoothing: antialiased;
}

a {
color: var(--accent-blue);
text-decoration: none;
transition: color 0.15s ease;
}

a:hover {
text-decoration: underline;
}

/* Layout Container */
.container {
width: 100%;
max-width: 960px;
margin: 0 auto;
padding: 0 1.25rem;
}

/* Header & Navigation Bar */
.site-nav {
background: #ffffff;
border-bottom: 1px solid var(--border-dim);
position: sticky;
top: 0;
z-index: 50;
box-shadow: var(--shadow-sm);
}

.site-nav .container {
display: flex;
align-items: center;
justify-content: space-between;
height: 64px;
}

.brand-link {
display: flex;
align-items: center;
gap: 0.65rem;
font-weight: 800;
color: var(--text-primary);
font-size: 1.05rem;
letter-spacing: -0.01em;
text-decoration: none !important;
}

.brand-mark {
background: var(--accent-amber);
color: #ffffff;
font-family: var(--font-mono);
font-size: 0.85rem;
font-weight: 700;
padding: 0.25rem 0.5rem;
border-radius: var(--radius-sm);
display: inline-block;
}

.nav-links {
display: flex;
align-items: center;
gap: 1.25rem;
list-style: none;
}

.nav-links a {
color: var(--text-secondary);
font-size: 0.9rem;
font-weight: 600;
padding: 0.4rem 0.2rem;
text-decoration: none;
transition: color 0.15s;
}

.nav-links a:hover,
.nav-links a.active {
color: var(--accent-amber);
}

@media (max-width: 640px) {
.site-nav .container {
height: auto;
padding-top: 0.75rem;
padding-bottom: 0.75rem;
flex-direction: column;
gap: 0.5rem;
}
.nav-links {
gap: 0.85rem;
flex-wrap: wrap;
justify-content: center;
}
.nav-links a {
font-size: 0.82rem;
}
}

/* Page Header */
.page-header {
text-align: center;
padding: 2.25rem 0 1.75rem;
}

.badge-eyebrow {
display: inline-flex;
align-items: center;
gap: 0.4rem;
background: var(--accent-amber-light);
color: var(--accent-amber);
font-family: var(--font-mono);
font-size: 0.72rem;
font-weight: 700;
text-transform: uppercase;
letter-spacing: 0.08em;
padding: 0.35rem 0.75rem;
border-radius: 9999px;
border: 1px solid rgba(217, 119, 6, 0.25);
margin-bottom: 0.85rem;
}

.page-header h1 {
font-size: clamp(1.6rem, 4.5vw, 2.25rem);
font-weight: 800;
letter-spacing: -0.025em;
color: var(--text-primary);
line-height: 1.2;
margin-bottom: 0.6rem;
}

.page-header p {
color: var(--text-secondary);
font-size: clamp(0.92rem, 2vw, 1.05rem);
max-width: 640px;
margin: 0 auto;
line-height: 1.5;
}

/* Primary Card Component */
.card {
background: var(--bg-card);
border: 1px solid var(--border-dim);
border-radius: var(--radius-lg);
box-shadow: var(--shadow-sm);
padding: 1.5rem;
margin-bottom: 1.75rem;
}

@media (min-width: 640px) {
.card {
padding: 2rem;
}
}

.card-title {
font-size: 1.25rem;
font-weight: 700;
letter-spacing: -0.01em;
margin-bottom: 0.5rem;
display: flex;
align-items: center;
gap: 0.5rem;
}

/* Responsive Google AdSense Containers */
.ad-slot-wrapper {
margin: 2rem auto;
width: 100%;
max-width: 728px;
text-align: center;
}

.ad-placeholder {
background: var(--bg-subtle);
border: 1px dashed var(--border-strong);
border-radius: var(--radius-md);
padding: 1.25rem;
min-height: 90px;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
gap: 0.35rem;
}

.ad-label {
font-family: var(--font-mono);
font-size: 0.68rem;
text-transform: uppercase;
letter-spacing: 0.1em;
color: var(--text-tertiary);
}

/* Form Groups & Inputs */
.form-group {
margin-bottom: 1.25rem;
background: var(--bg-subtle);
border: 1px solid var(--border-dim);
border-radius: var(--radius-md);
padding: 1rem 1.15rem;
}

label {
display: block;
font-weight: 700;
font-size: 0.92rem;
color: var(--text-primary);
margin-bottom: 0.25rem;
}

.field-help {
font-size: 0.82rem;
color: var(--text-secondary);
line-height: 1.4;
margin-bottom: 0.75rem;
display: block;
}

.input-split {
display: grid;
grid-template-columns: 1fr;
gap: 0.65rem;
}

@media (min-width: 480px) {
.input-split {
grid-template-columns: 1fr 140px;
}
}

input[type="number"],
input[type="text"],
input[type="email"],
select,
textarea {
width: 100%;
background: #ffffff;
border: 1px solid var(--border-strong);
border-radius: var(--radius-sm);
color: var(--text-primary);
font-family: var(--font-sans);
font-size: 0.95rem;
padding: 0.75rem 0.85rem;
min-height: 46px;
outline: none;
transition: border-color 0.15s, box-shadow 0.15s;
}

input[type="number"], select {
font-family: var(--font-mono);
}

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

/* Buttons */
.btn {
display: inline-flex;
align-items: center;
justify-content: center;
gap: 0.5rem;
font-weight: 700;
font-size: 0.95rem;
border-radius: var(--radius-md);
padding: 0.85rem 1.4rem;
min-height: 48px;
border: none;
cursor: pointer;
transition: all 0.15s ease;
text-decoration: none !important;
}

.btn-primary {
background: var(--accent-amber);
color: #ffffff;
width: 100%;
}

.btn-primary:hover {
background: #b45309;
}

.btn-secondary {
background: #ffffff;
color: var(--text-primary);
border: 1px solid var(--border-strong);
padding: 0.5rem 1rem;
min-height: 38px;
font-size: 0.85rem;
}

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

/* Screen Transitions */
.view-panel {
display: block;
}

.view-panel.is-hidden {
display: none;
}

/* Results View Components */
.result-banner {
background: var(--accent-amber-light);
border: 1px solid rgba(217, 119, 6, 0.35);
border-radius: var(--radius-md);
padding: 1.25rem 1.5rem;
margin-bottom: 1.5rem;
}

.result-banner h2 {
font-size: 1.35rem;
color: var(--accent-amber);
margin-bottom: 0.25rem;
font-weight: 800;
}

.result-banner p {
color: var(--text-secondary);
font-size: 0.92rem;
}

.metrics-grid {
display: grid;
grid-template-columns: 1fr;
gap: 1rem;
margin-bottom: 1.75rem;
}

@media (min-width: 600px) {
.metrics-grid {
grid-template-columns: repeat(3, 1fr);
}
}

.metric-card {
background: var(--bg-subtle);
border: 1px solid var(--border-dim);
border-radius: var(--radius-md);
padding: 1.15rem;
}

.metric-tag {
font-family: var(--font-mono);
font-size: 0.7rem;
text-transform: uppercase;
font-weight: 700;
color: var(--text-tertiary);
margin-bottom: 0.25rem;
}

.metric-val {
font-family: var(--font-mono);
font-size: 1.75rem;
font-weight: 800;
color: var(--text-primary);
line-height: 1.15;
margin-bottom: 0.35rem;
}

.metric-note {
font-size: 0.8rem;
color: var(--text-secondary);
line-height: 1.35;
}

/* Cut Table Guide */
.cut-table-card {
background: #ffffff;
border: 1px solid var(--border-dim);
border-radius: var(--radius-md);
overflow: hidden;
margin-bottom: 1.5rem;
}

.cut-row {
display: flex;
flex-direction: column;
padding: 0.9rem 1.25rem;
border-bottom: 1px solid var(--border-dim);
gap: 0.25rem;
}

@media (min-width: 600px) {
.cut-row {
flex-direction: row;
justify-content: space-between;
align-items: center;
gap: 1rem;
}
}

.cut-row:last-child {
border-bottom: none;
}

.cut-row-label {
font-size: 0.9rem;
color: var(--text-secondary);
}

.cut-row-val {
font-family: var(--font-mono);
font-weight: 700;
font-size: 0.95rem;
color: var(--text-primary);
}

.cut-row-val.highlight {
color: var(--accent-amber);
}

/* Stair SVG Canvas */
.canvas-wrapper {
background: var(--bg-contrast);
border-radius: var(--radius-md);
padding: 1.25rem;
margin-bottom: 1.5rem;
}

.canvas-legend {
display: flex;
justify-content: space-between;
color: #94a3b8;
font-family: var(--font-mono);
font-size: 0.8rem;
margin-bottom: 0.75rem;
}

#stair-svg {
width: 100%;
height: 180px;
display: block;
}

/* Compliance Badges */
.badge {
display: inline-flex;
align-items: center;
gap: 0.4rem;
padding: 0.35rem 0.75rem;
border-radius: 9999px;
font-family: var(--font-mono);
font-size: 0.75rem;
font-weight: 700;
text-transform: uppercase;
}

.badge-pass {
background: var(--status-pass-bg);
color: var(--status-pass);
border: 1px solid rgba(22, 163, 74, 0.3);
}

.badge-warn {
background: var(--status-warn-bg);
color: var(--status-warn);
border: 1px solid rgba(220, 38, 38, 0.3);
}

/* FAQ Accordion */
.faq-section {
margin-top: 2.5rem;
}

.faq-item {
background: var(--bg-card);
border: 1px solid var(--border-dim);
border-radius: var(--radius-md);
margin-bottom: 0.75rem;
overflow: hidden;
}

.faq-trigger {
width: 100%;
text-align: left;
background: none;
border: none;
padding: 1.15rem 1.25rem;
font-size: 1rem;
font-weight: 700;
color: var(--text-primary);
display: flex;
justify-content: space-between;
align-items: center;
cursor: pointer;
transition: background 0.15s;
}

.faq-trigger:hover {
background: var(--bg-subtle);
}

.faq-trigger svg {
flex-shrink: 0;
transition: transform 0.2s ease;
}

.faq-item.is-open .faq-trigger svg {
transform: rotate(180deg);
}

.faq-body {
padding: 0 1.25rem 1.15rem;
font-size: 0.92rem;
color: var(--text-secondary);
line-height: 1.6;
display: none;
}

.faq-item.is-open .faq-body {
display: block;
}

/* Articles & Content Layouts */
.article-grid {
display: grid;
grid-template-columns: 1fr;
gap: 1.5rem;
margin: 1.5rem 0;
}

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

.article-card {
background: #ffffff;
border: 1px solid var(--border-dim);
border-radius: var(--radius-md);
padding: 1.5rem;
display: flex;
flex-direction: column;
justify-content: space-between;
box-shadow: var(--shadow-sm);
transition: transform 0.15s, box-shadow 0.15s;
}

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

.article-card h3 {
font-size: 1.15rem;
font-weight: 700;
color: var(--text-primary);
margin-bottom: 0.5rem;
line-height: 1.35;
}

.article-card p {
color: var(--text-secondary);
font-size: 0.88rem;
line-height: 1.5;
margin-bottom: 1rem;
}

.read-more-link {
font-weight: 700;
font-size: 0.85rem;
color: var(--accent-amber);
display: inline-flex;
align-items: center;
gap: 0.35rem;
}

/* Editorial & Legal Text Formatting */
.prose {
color: var(--text-secondary);
font-size: 0.95rem;
line-height: 1.7;
}

.prose h2 {
color: var(--text-primary);
font-size: 1.35rem;
margin: 1.75rem 0 0.5rem;
font-weight: 800;
}

.prose h3 {
color: var(--text-primary);
font-size: 1.1rem;
margin: 1.25rem 0 0.4rem;
font-weight: 700;
}

.prose p {
margin-bottom: 1rem;
}

.prose ul, .prose ol {
margin-left: 1.5rem;
margin-bottom: 1rem;
}

.prose li {
margin-bottom: 0.4rem;
}

.prose code {
background: var(--bg-subtle);
border: 1px solid var(--border-dim);
padding: 0.15rem 0.35rem;
border-radius: 4px;
font-family: var(--font-mono);
font-size: 0.85em;
color: var(--text-primary);
}

/* Footer Section */
.site-footer {
margin-top: auto;
background: #ffffff;
border-top: 1px solid var(--border-dim);
padding: 2.5rem 0;
font-size: 0.85rem;
color: var(--text-tertiary);
}

.footer-columns {
display: grid;
grid-template-columns: 1fr;
gap: 1.75rem;
margin-bottom: 2rem;
}

@media (min-width: 640px) {
.footer-columns {
grid-template-columns: 2fr 1fr 1fr;
}
}

.footer-col h4 {
color: var(--text-primary);
font-size: 0.9rem;
font-weight: 700;
margin-bottom: 0.75rem;
}

.footer-col ul {
list-style: none;
display: flex;
flex-direction: column;
gap: 0.45rem;
}

.footer-col a {
color: var(--text-secondary);
text-decoration: none;
}

.footer-col a:hover {
color: var(--accent-amber);
}

.footer-bottom {
border-top: 1px solid var(--border-dim);
padding-top: 1.5rem;
display: flex;
flex-direction: column;
align-items: center;
justify-content: space-between;
gap: 0.75rem;
text-align: center;
font-family: var(--font-mono);
font-size: 0.75rem;
}

@media (min-width: 600px) {
.footer-bottom {
flex-direction: row;
text-align: left;
}
}