/* ===================================
   Josh Oppenheimer - Health AI Consulting
   A refined, warm professional aesthetic
   =================================== */

:root {
    --color-bg: #FDFBF7;
    --color-bg-alt: #F5F1EA;
    --color-text: #1A1A1A;
    --color-text-muted: #5C5C5C;
    --color-accent: #2D5A4A;
    --color-accent-light: #E8F0ED;
    --color-border: #E5E1D8;
    --font-serif: 'Instrument Serif', Georgia, serif;
    --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(253, 251, 247, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-accent);
    border-radius: 1px;
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 2rem 6rem;
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 4rem;
    align-items: center;
}

@media (max-width: 800px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2.5rem;
    }
    
    .hero-photo {
        justify-self: center;
    }
}

.hero-photo {
    position: relative;
}

.hero-photo img {
    width: 280px;
    height: 280px;
    object-fit: cover;
    border-radius: 12px;
    filter: grayscale(10%);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

.hero-photo::after {
    content: '';
    position: absolute;
    top: 12px;
    left: 12px;
    right: -12px;
    bottom: -12px;
    border: 2px solid var(--color-accent);
    border-radius: 12px;
    z-index: -1;
}

.hero-text {
    max-width: 600px;
}

@media (max-width: 800px) {
    .hero-text {
        max-width: 100%;
    }
}

.hero-badge {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent);
    background: var(--color-accent-light);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    margin-bottom: 2rem;
}

.hero-title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.hero-title em {
    font-style: italic;
    color: var(--color-accent);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    max-width: 600px;
    line-height: 1.7;
    margin-bottom: 2.5rem;
}

.hero-cta {
    display: inline-block;
    font-size: 0.95rem;
    font-weight: 600;
    color: #fff;
    background: var(--color-accent);
    padding: 1rem 2rem;
    border-radius: 6px;
    text-decoration: none;
    transition: all var(--transition);
}

.hero-cta:hover {
    background: #234A3B;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(45, 90, 74, 0.2);
}

/* ===== About Section ===== */
.about {
    padding: 6rem 2rem;
    background: var(--color-bg-alt);
}

.about-container {
    max-width: 900px;
    margin: 0 auto;
}

.about-label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 2rem;
}

.about-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text);
    margin-bottom: 1.5rem;
}

.about-content p:last-child {
    margin-bottom: 0;
}

/* ===== Credentials Section ===== */
.credentials {
    padding: 5rem 2rem;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.credentials-container {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.credential {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.credential-icon {
    color: var(--color-accent);
    flex-shrink: 0;
}

.credential-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.credential-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
}

.credential-source {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* ===== Page Header ===== */
.page-header {
    padding: 10rem 2rem 4rem;
    text-align: center;
}

.page-header-content {
    max-width: 700px;
    margin: 0 auto;
}

.page-title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 400;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.page-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ===== Services Section ===== */
.services {
    padding: 2rem 2rem 6rem;
}

.services-container {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

@media (max-width: 500px) {
    .services-container {
        grid-template-columns: 1fr;
    }
}

.service-card {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 2.5rem;
    transition: all var(--transition);
}

.service-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
}

.service-number {
    font-family: var(--font-serif);
    font-size: 0.9rem;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

.service-title {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 1rem;
}

.service-description {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.service-list {
    list-style: none;
}

.service-list li {
    font-size: 0.9rem;
    color: var(--color-text);
    padding: 0.5rem 0;
    padding-left: 1.25rem;
    position: relative;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

/* ===== Engagement Section ===== */
.engagement {
    padding: 6rem 2rem;
    background: var(--color-bg-alt);
}

.engagement-container {
    max-width: 900px;
    margin: 0 auto;
}

.engagement-label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 3rem;
}

.engagement-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

.engagement-option h3 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 400;
    margin-bottom: 0.75rem;
}

.engagement-option p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ===== CTA Section ===== */
.cta-section {
    padding: 6rem 2rem;
    text-align: center;
}

.cta-container {
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-family: var(--font-serif);
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 400;
    margin-bottom: 1rem;
}

.cta-text {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    font-size: 0.95rem;
    font-weight: 600;
    color: #fff;
    background: var(--color-accent);
    padding: 1rem 2rem;
    border-radius: 6px;
    text-decoration: none;
    transition: all var(--transition);
}

.cta-button:hover {
    background: #234A3B;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(45, 90, 74, 0.2);
}

/* ===== Contact Section ===== */
.contact-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 2rem 4rem;
}

.contact-container {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

@media (max-width: 800px) {
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .contact-visual {
        display: none;
    }
}

.contact-label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

.contact-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.contact-title em {
    font-style: italic;
    color: var(--color-accent);
}

.contact-text {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 2.5rem;
}

/* ===== Contact Form ===== */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-group .optional {
    font-weight: 400;
    color: var(--color-text-muted);
}

.form-group input,
.form-group textarea {
    font-family: var(--font-sans);
    font-size: 1rem;
    padding: 0.875rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: #fff;
    color: var(--color-text);
    transition: all var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #A0A0A0;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-submit {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    color: #fff;
    background: var(--color-accent);
    padding: 1rem 2rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition);
    align-self: flex-start;
}

.form-submit:hover {
    background: #234A3B;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(45, 90, 74, 0.2);
}

.contact-alt {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
}

.contact-alt p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.contact-alt a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
}

.contact-alt a:hover {
    text-decoration: underline;
}

.contact-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.contact-visual-inner {
    position: relative;
    width: 320px;
    height: 320px;
}

.visual-circle {
    position: absolute;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    animation: pulse 4s ease-in-out infinite;
}

.visual-circle:nth-child(1) {
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    animation-delay: 0s;
}

.visual-circle:nth-child(2) {
    width: 70%;
    height: 70%;
    top: 15%;
    left: 15%;
    animation-delay: 0.5s;
}

.visual-circle:nth-child(3) {
    width: 40%;
    height: 40%;
    top: 30%;
    left: 30%;
    background: var(--color-accent-light);
    animation-delay: 1s;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.02);
        opacity: 0.8;
    }
}

/* ===== Footer ===== */
.footer {
    padding: 2rem;
    border-top: 1px solid var(--color-border);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.footer a {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition);
}

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

/* ===== Mobile Adjustments ===== */
@media (max-width: 600px) {
    .nav-container {
        padding: 1rem 1.25rem;
    }
    
    .nav-links {
        gap: 1.5rem;
    }
    
    .nav-link {
        font-size: 0.85rem;
    }
    
    .hero {
        padding: 7rem 1.25rem 4rem;
    }
    
    .hero-subtitle {
        font-size: 1.05rem;
    }
    
    .about,
    .credentials,
    .services,
    .engagement,
    .cta-section {
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }
    
    .contact-section {
        padding: 7rem 1.25rem 4rem;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
    }
}