/* ==========================================================================
   Kinetic Ridge Orthopedics - Minimalist CSS Architecture
   ========================================================================== */

:root {
    --kro-surface-primary: #ffffff;
    --kro-surface-secondary: #f7f9f9;
    --kro-surface-tertiary: #eef1f1;
    --kro-ink-dark: #1c2121;
    --kro-ink-medium: #4a5555;
    --kro-ink-light: #7b8a8a;
    --kro-accent-core: #5a7d7c;
    --kro-accent-hover: #456160;
    --kro-border-subtle: #e2e8e8;
    
    --kro-font-display: 'Lora', serif;
    --kro-font-base: 'Inter', sans-serif;
    
    --kro-space-xs: 0.5rem;
    --kro-space-sm: 1rem;
    --kro-space-md: 2rem;
    --kro-space-lg: 4rem;
    --kro-space-xl: 8rem;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--kro-font-base);
    color: var(--kro-ink-dark);
    background-color: var(--kro-surface-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--kro-font-display);
    font-weight: 400;
    line-height: 1.2;
    color: var(--kro-ink-dark);
    margin-bottom: var(--kro-space-sm);
}

p {
    margin-bottom: var(--kro-space-sm);
    color: var(--kro-ink-medium);
}

a {
    color: var(--kro-accent-core);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--kro-accent-hover);
}

img {
    width: 100%;
    height: auto;
    object-fit: cover;
    display: block;
}

/* Header & Navigation */
.kro-masthead {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--kro-border-subtle);
    padding: 1.25rem 5%;
}

.kro-masthead-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.kro-brand-mark a {
    font-family: var(--kro-font-display);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--kro-ink-dark);
    letter-spacing: -0.5px;
}

.kro-primary-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.kro-primary-nav a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--kro-ink-medium);
}

.kro-primary-nav a:hover {
    color: var(--kro-ink-dark);
}

.kro-primary-nav .kro-action-link {
    background-color: var(--kro-ink-dark);
    color: var(--kro-surface-primary);
    padding: 0.6rem 1.2rem;
    border-radius: 2px;
}

.kro-primary-nav .kro-action-link:hover {
    background-color: var(--kro-accent-core);
    color: var(--kro-surface-primary);
}

/* Hero Section */
.kro-hero-stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 12vh 5% 8vh;
    max-width: 1000px;
    margin: 0 auto;
}

.kro-hero-content-core {
    max-width: 800px;
    margin-bottom: var(--kro-space-lg);
}

.kro-hero-headline {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    margin-bottom: var(--kro-space-md);
}

.kro-hero-subtext {
    font-size: 1.25rem;
    margin-bottom: var(--kro-space-md);
}

.kro-btn-primary {
    display: inline-block;
    background-color: var(--kro-accent-core);
    color: #fff;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 2px;
    transition: background-color 0.3s ease;
}

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

.kro-hero-visual-frame {
    width: 100%;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.05);
}

.kro-hero-visual-frame img {
    aspect-ratio: 16/9;
}

/* Feedback / Testimonials */
.kro-feedback-zone {
    background-color: var(--kro-surface-secondary);
    padding: var(--kro-space-xl) 5%;
}

.kro-section-header-centered {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--kro-space-lg);
}

.kro-feedback-cluster {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--kro-space-md);
}

.kro-story-card {
    background: var(--kro-surface-primary);
    padding: var(--kro-space-md);
    border: 1px solid var(--kro-border-subtle);
    border-radius: 4px;
}

.kro-story-avatar img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin-bottom: var(--kro-space-sm);
}

.kro-story-quote {
    font-style: italic;
    margin-bottom: var(--kro-space-sm);
    color: var(--kro-ink-medium);
}

.kro-story-author {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--kro-ink-dark);
    font-style: normal;
}

/* Philosophy / About */
.kro-philosophy-block {
    padding: 120px 5%;
}

.kro-philosophy-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.kro-eyebrow-text {
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 2px;
    color: var(--kro-ink-light);
    display: block;
    margin-bottom: var(--kro-space-xs);
}

.kro-inline-ref {
    text-decoration: underline;
    text-decoration-color: var(--kro-accent-core);
    text-underline-offset: 4px;
}

.kro-data-metrics-row {
    display: flex;
    gap: var(--kro-space-md);
    margin-top: var(--kro-space-md);
    padding-top: var(--kro-space-md);
    border-top: 1px solid var(--kro-border-subtle);
}

.kro-metric-item {
    display: flex;
    flex-direction: column;
}

.kro-metric-val {
    font-family: var(--kro-font-display);
    font-size: 3rem;
    color: var(--kro-ink-dark);
    line-height: 1;
}

.kro-metric-sym {
    font-size: 1.5rem;
    color: var(--kro-accent-core);
    vertical-align: top;
}

.kro-metric-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--kro-ink-medium);
    margin-top: 0.5rem;
}

/* Modalities / Services */
.kro-modalities-sector {
    background-color: var(--kro-surface-tertiary);
    padding: 100px 5%;
}

.kro-modalities-intro {
    max-width: 1200px;
    margin: 0 auto var(--kro-space-md);
}

.kro-process-ribbon {
    max-width: 1200px;
    margin: 0 auto var(--kro-space-lg);
    background: var(--kro-surface-primary);
    padding: var(--kro-space-md);
    border-left: 4px solid var(--kro-accent-core);
}

.kro-process-ribbon h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.kro-process-ribbon ol {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    list-style: none;
}

.kro-process-ribbon li {
    flex: 1;
    min-width: 250px;
    font-size: 0.95rem;
}

.kro-modalities-matrix {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2px; /* for grid lines */
    background-color: var(--kro-border-subtle);
    border: 1px solid var(--kro-border-subtle);
}

.kro-modality-cell {
    background-color: var(--kro-surface-primary);
    padding: var(--kro-space-md);
}

.kro-modality-cell img {
    aspect-ratio: 4/3;
    margin-bottom: var(--kro-space-sm);
    border-radius: 2px;
}

/* Booking / Contact */
.kro-booking-sector {
    padding: var(--kro-space-xl) 5%;
}

.kro-booking-container {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
}

.kro-sub-detail {
    font-size: 0.85rem;
    color: var(--kro-ink-light);
    margin-top: 1rem;
}

.kro-intake-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.kro-input-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
    color: var(--kro-ink-dark);
}

.kro-input-group input,
.kro-input-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--kro-border-subtle);
    background-color: var(--kro-surface-secondary);
    font-family: inherit;
    border-radius: 2px;
    transition: border-color 0.2s;
}

.kro-input-group input:focus,
.kro-input-group textarea:focus {
    outline: none;
    border-color: var(--kro-accent-core);
    background-color: var(--kro-surface-primary);
}

.kro-submit-btn {
    background-color: var(--kro-ink-dark);
    color: #fff;
    border: none;
    padding: 1rem;
    font-size: 1rem;
    cursor: pointer;
    border-radius: 2px;
    transition: background-color 0.3s;
}

.kro-submit-btn:hover {
    background-color: var(--kro-accent-core);
}

/* Footer */
.kro-site-footer {
    background-color: var(--kro-ink-dark);
    color: var(--kro-surface-tertiary);
    padding: var(--kro-space-lg) 5% var(--kro-space-sm);
}

.kro-footer-layout {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--kro-space-md);
    border-bottom: 1px solid var(--kro-ink-medium);
    padding-bottom: var(--kro-space-md);
    margin-bottom: var(--kro-space-md);
}

.kro-footer-col h4 {
    color: var(--kro-surface-primary);
    font-family: var(--kro-font-base);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.kro-footer-col p,
.kro-footer-col a {
    color: var(--kro-ink-light);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.kro-footer-col a:hover {
    color: var(--kro-surface-primary);
}

.kro-legal-links {
    list-style: none;
}

.kro-footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    font-size: 0.8rem;
    color: var(--kro-ink-medium);
}

.kro-tiny-noise {
    margin-top: 0.5rem;
    font-size: 0.75rem;
    opacity: 0.7;
}

/* Utility & Pages */
.kro-legal-doc {
    max-width: 800px;
    margin: 100px auto;
    padding: 0 5%;
}

.kro-legal-doc h1 {
    margin-bottom: 2rem;
}

.kro-legal-doc h2 {
    margin-top: 2rem;
    font-size: 1.5rem;
}

/* Responsive Leakage & Adjustments */
@media (max-width: 900px) {
    .kro-philosophy-grid,
    .kro-booking-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .kro-process-ribbon ol {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .kro-primary-nav ul {
        display: none; /* In a real scenario, implement a hamburger menu here */
    }
    
    .kro-hero-stage {
        padding: 8vh 5% 4vh;
    }
}