/* ================================================================
   NEUROPATHWAYS INSTITUTE — Design System
   Precision Luxe: Scientific Authority Meets Editorial Elegance
   ================================================================ */

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
    /* Typography */
    --font-display: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
    --font-body: 'DM Sans', 'Segoe UI', system-ui, sans-serif;

    /* Colors */
    --color-bg: #FFFFFF;
    --color-bg-warm: #FAFAF8;
    --color-bg-teal: #F0FDFA;
    --color-text: #1C1917;
    --color-text-secondary: #57534E;
    --color-text-muted: #A8A29E;
    --color-accent: #0D9488;
    --color-accent-hover: #0F766E;
    --color-accent-light: #CCFBF1;
    --color-accent-glow: rgba(13, 148, 136, 0.08);
    --color-gold: #92400E;
    --color-gold-light: #FEF3C7;
    --color-border: #E7E5E4;
    --color-border-light: #F5F5F4;
    --color-dark: #1C1917;
    --color-dark-secondary: #292524;

    /* Spacing */
    --section-padding: 120px;
    --section-padding-mobile: 64px;
    --container-max: 1200px;
    --container-narrow: 800px;

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --transition-fast: 0.2s var(--ease-out);
    --transition-medium: 0.4s var(--ease-out);
    --transition-slow: 0.8s var(--ease-out);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(28, 25, 23, 0.04);
    --shadow-md: 0 4px 12px rgba(28, 25, 23, 0.06);
    --shadow-lg: 0 8px 32px rgba(28, 25, 23, 0.08);
    --shadow-xl: 0 16px 48px rgba(28, 25, 23, 0.12);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.8;
    font-size: 1.125rem;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

::selection {
    background: var(--color-accent-light);
    color: var(--color-accent-hover);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5 {
    font-family: var(--font-display);
    color: var(--color-text);
    line-height: 1.2;
    font-weight: 600;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

h2 {
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.5rem, 2.5vw, 1.875rem);
}

h4 {
    font-size: 1.25rem;
    font-weight: 600;
}

h5 {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent);
}

p {
    margin-bottom: 1.25rem;
    color: var(--color-text-secondary);
}

p:last-child {
    margin-bottom: 0;
}

strong {
    color: var(--color-text);
    font-weight: 600;
}

blockquote {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 2vw, 1.5rem);
    font-style: italic;
    line-height: 1.6;
    color: var(--color-text);
    border-left: 3px solid var(--color-accent);
    padding-left: 2rem;
    margin: 2rem 0;
}

/* ===== LAYOUT ===== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
}

.container--narrow {
    max-width: var(--container-narrow);
}

.section {
    padding: var(--section-padding) 0;
    position: relative;
}

.section--warm {
    background: var(--color-bg-warm);
}

.section--dark {
    background: var(--color-dark);
    color: #F5F5F4;
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
    color: #FAFAF9;
}

.section--dark p {
    color: #D6D3D1;
}

.section--dark .section-label {
    color: var(--color-accent);
}

.section--teal {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
    color: #FFFFFF;
}

.section--teal h1,
.section--teal h2,
.section--teal h3,
.section--teal p {
    color: #FFFFFF;
}

.section--teal p {
    opacity: 0.9;
}

/* Section label (small caps above heading) */
.section-label {
    font-family: var(--font-body);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 1rem;
    display: block;
}

/* Section header group */
.section-header {
    max-width: 720px;
    margin-bottom: 4rem;
}

.section-header.centered {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    margin-bottom: 1.25rem;
}

.section-header p {
    font-size: 1.1875rem;
    line-height: 1.7;
}

/* ===== NAVIGATION ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition-medium), box-shadow var(--transition-medium);
    height: 72px;
}

.nav.scrolled {
    border-bottom-color: var(--color-border);
    box-shadow: 0 1px 8px rgba(28, 25, 23, 0.04);
}

.nav-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.01em;
    white-space: nowrap;
}

.nav-logo span {
    color: var(--color-accent);
    font-weight: 600;
}

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

.nav-links a {
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 400;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--color-accent);
    transition: width var(--transition-medium);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-cta {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    color: #FFFFFF !important;
    background: var(--color-accent);
    padding: 0.625rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    transition: background var(--transition-fast), transform 0.15s ease;
    letter-spacing: 0.02em;
}

.nav-cta:hover {
    background: var(--color-accent-hover);
    color: #FFFFFF !important;
    transform: translateY(-1px);
}

.nav-cta::after {
    display: none !important;
}

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    margin: 5px 0;
    transition: var(--transition-fast);
    border-radius: 1px;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    letter-spacing: 0.02em;
    line-height: 1;
}

.btn--primary {
    background: var(--color-accent);
    color: #FFFFFF;
}

.btn--primary:hover {
    background: var(--color-accent-hover);
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(13, 148, 136, 0.3);
}

.btn--secondary {
    background: transparent;
    color: var(--color-accent);
    border: 1.5px solid var(--color-accent);
}

.btn--secondary:hover {
    background: var(--color-accent);
    color: #FFFFFF;
    transform: translateY(-2px);
}

.btn--white {
    background: #FFFFFF;
    color: var(--color-accent);
}

.btn--white:hover {
    background: #F5F5F4;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--large {
    padding: 1rem 2.5rem;
    font-size: 1rem;
}

.btn--arrow::after {
    content: '\2192';
    transition: transform var(--transition-fast);
}

.btn--arrow:hover::after {
    transform: translateX(4px);
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 72px;
    overflow: hidden;
}

.hero--inner {
    min-height: 50vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
}

.hero-content {
    max-width: 780px;
    position: relative;
    z-index: 2;
}

.hero h1 {
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.1875rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    max-width: 620px;
    margin-bottom: 2rem;
}

.hero .btn {
    margin-bottom: 3rem;
}

/* Neural pathway SVG background */
.hero-bg {
    position: absolute;
    top: 0;
    right: -10%;
    width: 60%;
    height: 100%;
    opacity: 0.04;
    pointer-events: none;
    z-index: 1;
}

/* Credential ribbon */
.credential-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.credential-bar .credential {
    font-family: var(--font-body);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-muted);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.credential .number {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
}

/* ===== CARDS ===== */
.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 2rem;
    transition: all var(--transition-medium);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--color-accent-light);
}

.card-icon {
    width: 48px;
    height: 48px;
    background: var(--color-accent-glow);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    color: var(--color-accent);
    font-size: 1.25rem;
}

.card h3 {
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.card p {
    font-size: 1rem;
}

/* ===== GRID LAYOUTS ===== */
.grid {
    display: grid;
    gap: 2rem;
}

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

.grid--3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ===== STATS ROW ===== */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat {
    padding: 2rem 1rem;
}

.stat-number {
    font-family: var(--font-display);
    font-size: clamp(3rem, 5vw, 4rem);
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    line-height: 1.4;
}

.stat-detail {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: 0.25rem;
}

/* ===== COMPARISON TABLE ===== */
.comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.comparison-col {
    padding: 2.5rem;
}

.comparison-col--left {
    background: var(--color-bg-warm);
}

.comparison-col--right {
    background: var(--color-bg);
    border-left: 1px solid var(--color-border);
}

.comparison-col h4 {
    font-family: var(--font-body);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    color: var(--color-text-muted);
}

.comparison-col--right h4 {
    color: var(--color-accent);
}

.comparison-item {
    padding: 0.875rem 0;
    border-bottom: 1px solid var(--color-border-light);
    font-size: 1rem;
    color: var(--color-text-secondary);
}

.comparison-col--left .comparison-item {
    color: var(--color-text-muted);
}

.comparison-col--right .comparison-item {
    color: var(--color-text);
    font-weight: 500;
}

.comparison-item:last-child {
    border-bottom: none;
}

/* ===== STEPS / PROCESS ===== */
.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    position: relative;
}

.steps--4 {
    grid-template-columns: repeat(4, 1fr);
}

.steps::before {
    content: '';
    position: absolute;
    top: 28px;
    left: 15%;
    right: 15%;
    height: 1px;
    background: var(--color-border);
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-accent);
    width: 56px;
    height: 56px;
    border: 2px solid var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    background: var(--color-bg);
    position: relative;
    z-index: 2;
}

.step h3 {
    font-size: 1.375rem;
    margin-bottom: 0.75rem;
}

.step p {
    font-size: 0.9375rem;
    max-width: 300px;
    margin: 0 auto;
}

/* ===== TESTIMONIAL ===== */
.testimonial {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.testimonial-quote {
    font-family: var(--font-display);
    font-size: clamp(1.375rem, 2.5vw, 1.75rem);
    font-style: italic;
    line-height: 1.6;
    color: #FAFAF9;
    margin-bottom: 2rem;
    position: relative;
}

.testimonial-quote::before {
    content: '\201C';
    font-family: var(--font-display);
    font-size: 6rem;
    color: var(--color-accent);
    position: absolute;
    top: -2rem;
    left: -1rem;
    line-height: 1;
    opacity: 0.4;
}

.testimonial-author {
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--color-accent);
    font-weight: 600;
}

.testimonial-title {
    font-family: var(--font-body);
    font-size: 0.875rem;
    color: #A8A29E;
    margin-top: 0.25rem;
}

/* ===== CTA SECTION ===== */
.cta-section {
    text-align: center;
    padding: var(--section-padding) 0;
}

.cta-section h2 {
    color: #FFFFFF;
    margin-bottom: 1.25rem;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.85);
    max-width: 560px;
    margin: 0 auto 2rem;
    font-size: 1.125rem;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--color-dark);
    color: #D6D3D1;
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-brand {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 700;
    color: #FAFAF9;
    margin-bottom: 1rem;
}

.footer-brand span {
    color: var(--color-accent);
}

.footer-desc {
    font-size: 0.9375rem;
    color: #A8A29E;
    line-height: 1.7;
    max-width: 320px;
}

.footer-heading {
    font-family: var(--font-body);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #FAFAF9;
    margin-bottom: 1.25rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.625rem;
}

.footer-links a {
    font-size: 0.9375rem;
    color: #A8A29E;
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid #292524;
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8125rem;
    color: #78716C;
}

/* ===== DIVIDER ===== */
.divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    max-width: 120px;
    margin: 0 auto 3rem;
}

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

.divider-dot {
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ===== PAGE HERO (inner pages) ===== */
.page-hero {
    padding: calc(72px + 80px) 0 80px;
    background: var(--color-bg-warm);
    border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
    margin-bottom: 1rem;
}

.page-hero p {
    font-size: 1.1875rem;
    max-width: 640px;
}

/* ===== FORM STYLES ===== */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1.5px solid var(--color-border);
    border-radius: 8px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    appearance: none;
}

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

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

/* ===== SCROLL ANIMATIONS ===== */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ===== PUBLICATION CARD ===== */
.pub-card {
    padding: 1.5rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    transition: all var(--transition-medium);
}

.pub-card:hover {
    border-color: var(--color-accent-light);
    box-shadow: var(--shadow-md);
}

.pub-card .pub-journal {
    font-size: 0.8125rem;
    color: var(--color-accent);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.pub-card .pub-title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.4;
    margin-bottom: 0.5rem;
}

.pub-card .pub-authors {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.pub-card .pub-role {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    background: var(--color-accent-glow);
    color: var(--color-accent);
    margin-top: 0.5rem;
}

/* ===== CASE STUDY CARD ===== */
.case-card {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    transition: all var(--transition-medium);
}

.case-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.case-card-header {
    background: var(--color-bg-warm);
    padding: 2rem;
    border-bottom: 1px solid var(--color-border);
}

.case-card-body {
    padding: 2rem;
}

.case-card .case-stat {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
}

/* ===== SERVICE CARD ===== */
.service-card {
    padding: 2.5rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-medium);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-card h3 {
    margin-bottom: 0.75rem;
    font-size: 1.375rem;
}

/* ===== ARTICLE CARD ===== */
.article-card {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    transition: all var(--transition-medium);
}

.article-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.article-card-img {
    height: 200px;
    background: var(--color-bg-warm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--color-accent);
    opacity: 0.2;
}

.article-card-body {
    padding: 1.5rem;
}

.article-card .article-date {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.article-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.article-card p {
    font-size: 0.9375rem;
}

/* ===== SERVICE CARD ENHANCEMENTS ===== */
.service-card .service-label {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
    display: block;
}

.service-card p {
    font-size: 1rem;
    line-height: 1.7;
}

.service-card .service-detail {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-style: italic;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--color-border-light);
}

/* ===== TALK / SPEAKING CARD ===== */
.talk-card {
    padding: 2.5rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.talk-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--color-accent);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform var(--transition-medium);
}

.talk-card:hover::before {
    transform: scaleY(1);
}

.talk-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.talk-card .talk-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
    opacity: 0.15;
    line-height: 1;
    margin-bottom: 1rem;
}

.talk-card h3 {
    font-size: 1.375rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.talk-card p {
    font-size: 1rem;
    line-height: 1.7;
}

/* ===== AVAILABILITY TAGS ===== */
.avail-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

.avail-tag {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 0.625rem 1.25rem;
    transition: all var(--transition-fast);
}

.avail-tag:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.avail-tag--lang {
    background: var(--color-accent-glow);
    border-color: var(--color-accent-light);
    color: var(--color-accent);
    font-weight: 600;
}

/* ===== INVESTMENT / PHILOSOPHY BLOCK ===== */
.philosophy-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--color-border);
}

.philosophy-col {
    padding: 3rem;
}

.philosophy-col--accent {
    background: var(--color-bg-warm);
}

.philosophy-col--main {
    background: var(--color-bg);
    border-left: 1px solid var(--color-border);
}

.philosophy-col h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.philosophy-col p {
    font-size: 1rem;
    line-height: 1.7;
}

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

    .philosophy-col--main {
        border-left: none;
        border-top: 1px solid var(--color-border);
    }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .grid--4 {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .steps::before {
        display: none;
    }

    .steps {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .step {
        text-align: left;
        display: grid;
        grid-template-columns: 56px 1fr;
        gap: 1rem;
        align-items: start;
    }

    .step-number {
        margin: 0;
    }

    .step p {
        max-width: none;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 64px;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 1.5rem;
        gap: 0;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg);
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        padding: 0.75rem 0;
        font-size: 1rem;
    }

    .nav-links a::after {
        display: none;
    }

    .nav-cta {
        margin-top: 0.75rem;
        text-align: center;
        display: block;
    }

    .nav-toggle {
        display: block;
    }

    .hero {
        min-height: auto;
        padding-top: calc(72px + 48px);
        padding-bottom: 48px;
    }

    h1 {
        font-size: clamp(2rem, 6vw, 2.5rem);
    }

    .grid--2,
    .grid--3 {
        grid-template-columns: 1fr;
    }

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

    .comparison-col--right {
        border-left: none;
        border-top: 1px solid var(--color-border);
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
    }

    .credential-bar {
        gap: 1rem;
    }

    .stats-row {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .stats-row {
        grid-template-columns: 1fr;
    }
}

/* ===== PRINT ===== */
@media print {
    .nav,
    .nav-toggle,
    .btn,
    .footer {
        display: none !important;
    }

    .section {
        padding: 2rem 0;
    }

    .hero {
        min-height: auto;
        padding-top: 2rem;
    }

    body {
        font-size: 12pt;
        color: #000;
    }
}