/* ==============================================
   intellaigent.info — Global Stylesheet
   Brand blue: #0017F4

   ADA WCAG 2.1 AA — All contrast ratios verified.
   Design principle: dark surfaces for short display
   type only. White/near-white for all sustained
   reading content. This eliminates contrast failure
   structurally rather than by per-element checking.

   Dark surfaces:
   White #fff on black #000          = 21.0:1 ✓
   White #fff on #080810             = 20.6:1 ✓
   White #fff on #0017F4             =  8.28:1 ✓
   Yellow #ffff00 on black           = 19.6:1 ✓

   White/light surfaces:
   #111 on white                     = 18.1:1 ✓
   #222 on white                     = 16.1:1 ✓
   #333 on white                     = 12.6:1 ✓
   #444 on white                     =  9.7:1 ✓
   #555 on white                     =  7.0:1 ✓
   #0017F4 on white                  =  8.28:1 ✓
   #0017F4 on #f7f7fb                =  8.14:1 ✓
   #0017F4 on #f0f2ff                =  7.9:1 ✓

   Dyslexia note: white-on-dark text increases
   reading difficulty for many people with dyslexia.
   All paragraph-level content sits on white only.
   ============================================== */

/* =====================
   RESET & BASE
===================== */

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

body {
font-family: "Roboto Condensed", sans-serif;
background-color: white;
color: #111;
display: flex;
flex-direction: column;
min-height: 100vh;
}

/* =====================
   HEADER — Dark surface, Plane 1
   Sticky, z: 100. Downward shadow onto content below.
   .header-inner constrains logo/nav to 2000px max-width
   so they stay reachable on ultrawide displays.
   ADA: white on black = 21:1 ✓
   HOVER: yellow on black = 19.6:1 ✓
===================== */

header {
position: sticky;
top: 0;
z-index: 100;
padding: 1rem;
background-color: black;
border-bottom: 10px solid #0017F4;
box-shadow:
0 8px 24px rgba(0, 0, 0, 0.9),
0 20px 60px rgba(0, 0, 0, 0.6);
}

.header-inner {
display: flex;
align-items: center;
justify-content: space-between;
max-width: 2000px;
margin: 0 auto;
width: 100%;
}

.logo {
max-width: 200px;
}

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

header nav ul {
display: flex;
gap: 2rem;
list-style: none;
}

header nav a {
text-decoration: none;
font-size: 1.3em;
color: white;
font-family: "Tomorrow", sans-serif;
transition: color 0.3s ease;
white-space: nowrap;
}

header nav a:hover,
header nav a:focus {
color: yellow;
outline: none;
}

/* =====================
   HERO BANNER — Dark surface
   Shared across about, aifluency, contact, topics,
   privacy, terms. Not used on index.html (uses main).
   Decorative rings are visual only (pointer-events: none).
   z: 1 — first content section rises over it from below.
===================== */

.hero-banner {
position: relative;
z-index: 1;
background-color: #080810;
padding: 4rem 2rem 3rem;
text-align: center;
overflow: hidden;
border-bottom: 6px solid #0017F4;
}

.hero-banner::before {
content: '';
position: absolute;
width: 500px;
height: 500px;
border: 2px dotted rgba(0, 23, 244, 0.3);
border-radius: 50%;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
pointer-events: none;
z-index: 0;
}

.hero-banner::after {
content: '';
position: absolute;
width: 360px;
height: 360px;
border: 1px solid rgba(255, 255, 255, 0.07);
border-radius: 50%;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
pointer-events: none;
z-index: 0;
}

.hero-eyebrow {
font-family: "Tomorrow", sans-serif;
font-size: 0.85rem;
font-weight: 300;
letter-spacing: 0.2em;
color: white;
text-transform: uppercase;
margin-bottom: 1.25rem;
position: relative;
z-index: 1;
text-decoration: underline;
text-decoration-color: #0017F4;
text-underline-offset: 4px;
}

.hero-banner h1 {
font-family: "Tomorrow", sans-serif;
font-size: clamp(1.8rem, 4vw, 3rem);
font-weight: 200;
line-height: 1.15;
color: white;
margin: 0 auto 1rem;
position: relative;
z-index: 1;
}

.hero-banner h1 em {
color: white;
font-style: normal;
font-weight: 700;
text-decoration: underline;
text-decoration-color: #0017F4;
text-underline-offset: 5px;
text-decoration-thickness: 3px;
}

.hero-banner p {
font-size: 1.1rem;
line-height: 1.7;
color: rgba(255, 255, 255, 0.85);
max-width: 620px;
margin: 0 auto;
position: relative;
z-index: 1;
}

.hero-meta {
font-family: "Tomorrow", sans-serif;
font-size: 0.85rem;
color: rgba(255, 255, 255, 0.6);
position: relative;
z-index: 1;
letter-spacing: 0.05em;
}

/* =====================
   SHARED SECTION STYLES
   Used across aifluency, topics, about (presentations).
===================== */

section {
padding: 4rem 2rem;
}

.section-inner {
max-width: 960px;
margin: 0 auto;
}

.section-label {
font-family: "Tomorrow", sans-serif;
font-size: 0.8rem;
font-weight: 400;
letter-spacing: 0.2em;
text-transform: uppercase;
color: #555;
margin-bottom: 0.75rem;
}

.section-inner h2 {
font-family: "Tomorrow", sans-serif;
font-size: clamp(1.4rem, 3vw, 2rem);
font-weight: 300;
color: #111;
margin-bottom: 1.75rem;
line-height: 1.25;
}

.section-inner h2 em {
color: #0017F4;
font-style: normal;
font-weight: 600;
}

.section-intro {
color: #333;
font-size: 1.05rem;
line-height: 1.75;
margin-bottom: 2.5rem;
max-width: 760px;
}

/* =====================
   CTA SECTION — Dark surface
   Shared across about, aifluency, topics.
   z: 30 — rises above content sections.
   ADA: white on #0017F4 = 8.28:1 ✓ throughout.
===================== */

.cta-section {
position: relative;
z-index: 30;
background-color: #0017F4;
padding: 4rem 2rem;
text-align: center;
box-shadow: 0 -30px 60px rgba(0, 0, 0, 0.5);
}

.cta-section h2 {
font-family: "Tomorrow", sans-serif;
font-size: clamp(1.5rem, 3.5vw, 2.2rem);
font-weight: 300;
color: white;
margin-bottom: 0.75rem;
}

.cta-section p {
color: white;
font-size: 1.05rem;
margin-bottom: 2rem;
max-width: 560px;
margin-left: auto;
margin-right: auto;
line-height: 1.7;
}

.cta-btn {
display: inline-block;
font-family: "Tomorrow", sans-serif;
font-size: 0.95rem;
color: #0017F4;
background-color: white;
padding: 0.75rem 2rem;
text-decoration: none;
letter-spacing: 0.05em;
transition: background-color 0.3s ease, color 0.3s ease;
}

.cta-btn:hover,
.cta-btn:focus {
background-color: black;
color: white;
outline: none;
}

/* =====================
   PULLQUOTE — Shared (aifluency, topics)
===================== */

.pullquote {
border-left: 4px solid #0017F4;
padding: 1rem 1.5rem;
margin: 2rem 0 0;
background-color: #f7f7fb;
}

.pullquote p {
font-family: "Tomorrow", sans-serif;
font-size: 1.05rem;
font-weight: 300;
color: #222;
line-height: 1.6;
margin-bottom: 0;
font-style: italic;
}

/* =====================
   FOOTER — Dark surface, base of stack
   Black per site preference. Navigation only —
   no sustained reading content.
   ADA: white on black = 21:1 ✓
   ADA: yellow on black = 19.6:1 ✓
===================== */

footer {
position: relative;
z-index: 40;
padding: 1.5rem;
background-color: black;
border-top: 6px solid #0017F4;
margin-top: auto;
}

footer nav ul {
display: flex;
justify-content: center;
gap: 2rem;
list-style: none;
margin-bottom: 1rem;
flex-wrap: wrap;
}

footer nav a {
text-decoration: none;
color: white;
font-family: "Tomorrow", sans-serif;
transition: color 0.3s ease;
}

footer nav a:hover,
footer nav a:focus {
color: yellow;
outline: none;
}

.copyright {
text-align: center;
color: yellow;
font-size: 0.85rem;
}

/* =====================
   INDEX — HERO / MAIN
   Full-viewport 2x2 photo grid with circle nav overlay.
   Plane 2 (middle, recessed). Vignette ::after darkens
   edges, reinforcing depth between header and intro.
===================== */

main {
position: relative;
z-index: 1;
height: 100vh;
min-height: 500px;
overflow: hidden;
}

main::after {
content: '';
position: absolute;
inset: 0;
z-index: 3;
pointer-events: none;
background: radial-gradient(ellipse at center, transparent 40%, rgba(0, 0, 0, 0.75) 100%);
}

.hero-grid {
position: absolute;
inset: 0;
display: grid;
grid-template-columns: 1fr 1fr;
grid-template-rows: 1fr 1fr;
}

.hero-grid img {
width: 100%;
height: 100%;
object-fit: cover;
display: block;
}

.circles-container {
position: absolute;
inset: 0;
z-index: 2;
display: flex;
justify-content: center;
align-items: center;
padding: 2rem;
}

.outer-circle {
position: relative;
width: 90vw;
max-width: 900px;
min-width: 280px;
aspect-ratio: 1;
border-radius: 50%;
display: flex;
justify-content: center;
align-items: center;
background: rgba(255, 255, 255, 0.1);
}

.outer-circle::before {
content: '';
position: absolute;
width: 100%;
height: 100%;
border: 2px dotted white;
border-radius: 50%;
transition: transform 0.5s ease, border-color 0.5s ease, border-width 0.5s ease;
pointer-events: none;
}

.outer-circle:hover::before {
transform: scale(1.1);
border-color: #0017F4;
border-width: 5px;
}

.inner-circle {
width: calc(100% - 100px);
height: calc(100% - 100px);
border: 3px solid white;
border-radius: 50%;
display: flex;
flex-wrap: wrap;
overflow: hidden;
background: rgba(0, 0, 0, 0.75);
}

.quarter {
width: 50%;
height: 50%;
display: flex;
justify-content: center;
align-items: center;
transition: background-color 0.3s ease;
}

.quarter:hover,
.quarter:focus-within {
background-color: rgba(0, 23, 244, 0.45);
}

.quarter span {
font-size: calc(1rem + 1.5vw);
font-family: "Tomorrow", sans-serif;
}

.quarter span a {
color: white;
text-decoration: none;
}

.quarter span a:visited {
color: white;
}

.quarter span a:focus {
outline: 3px solid white;
outline-offset: 4px;
}

/* =====================
   INDEX — CERTIFICATE SLIDE-IN PANEL
   Fully hidden off-screen by default (left: -344px
   accounts for 300px panel + 44px tab width).
   Auto-opens when main bottom crosses viewport center.
   Toggled by tab click. Hidden on mobile.
   Replace images/certificate.png with actual filename.
===================== */

.cert-panel {
position: fixed;
left: -344px;
top: 50%;
transform: translateY(-50%);
width: 300px;
z-index: 200;
transition: left 0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.cert-panel.open {
left: 0;
}

.cert-content {
background: black;
border: 3px solid #0017F4;
border-left: none;
padding: 1.25rem;
}

.cert-content img {
width: 100%;
height: auto;
display: block;
border-bottom: 2px solid #0017F4;
margin-bottom: 0.75rem;
}

.cert-caption {
font-family: "Tomorrow", sans-serif;
color: white;
font-size: 0.75rem;
letter-spacing: 0.08em;
text-align: center;
line-height: 1.6;
}

.cert-tab {
position: absolute;
right: -44px;
top: 50%;
transform: translateY(-50%);
width: 44px;
height: 130px;
background: #0017F4;
color: white;
border: none;
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
font-family: "Tomorrow", sans-serif;
font-size: 0.7rem;
letter-spacing: 0.12em;
writing-mode: vertical-rl;
text-orientation: mixed;
transition: background-color 0.3s ease;
}

.cert-tab:hover,
.cert-tab:focus {
background-color: black;
outline: 2px solid #0017F4;
}

/* =====================
   INDEX — INTRO SECTION
   Plane 3: rises over hero with -60px overlap.
   White background — all body text on white.
   ADA: all text verified ✓
===================== */

.intro {
position: relative;
z-index: 20;
margin-top: -60px;
background-color: #ffffff;
padding: 5rem 2rem 4rem;
border-top: 8px solid #0017F4;
box-shadow:
0 -40px 80px rgba(0, 0, 0, 0.95),
0 -4px 0 rgba(0, 23, 244, 0.3);
}

.intro-inner {
max-width: 900px;
margin: 0 auto;
display: grid;
grid-template-columns: 1fr 1fr;
gap: 2rem;
align-items: center;
}

.intro-inner h2 {
font-family: "Tomorrow", sans-serif;
font-size: clamp(1.4rem, 3vw, 2.2rem);
color: #111;
font-weight: 300;
line-height: 1.25;
letter-spacing: 0.02em;
}

.intro-inner h2 em {
color: #0017F4;
font-style: normal;
font-weight: 700;
}

.intro-body p {
color: #333;
font-size: 1.05rem;
line-height: 1.7;
margin-bottom: 1.25rem;
}

/* =====================
   ABOUT — BIOS SECTION
   White surface, Plane 3. Rises over hero.
===================== */

.bios-section {
position: relative;
z-index: 20;
margin-top: -50px;
padding: 5rem 2rem 4rem;
background-color: white;
border-top: 8px solid #0017F4;
box-shadow:
0 -40px 80px rgba(0, 0, 0, 0.95),
0 -4px 0 rgba(0, 23, 244, 0.2);
}

.bios-inner {
max-width: 1100px;
margin: 0 auto;
display: grid;
grid-template-columns: 1fr 1fr;
gap: 3rem;
}

.bio-card {
border-top: 3px solid #0017F4;
padding-top: 2rem;
}

.bio-photo {
width: 100%;
aspect-ratio: 16 / 10;
object-fit: cover;
object-position: top;
display: block;
margin-bottom: 1.75rem;
filter: grayscale(20%);
}

.bio-card h2 {
font-family: "Tomorrow", sans-serif;
font-size: clamp(1.3rem, 2.5vw, 1.7rem);
font-weight: 300;
color: #111;
margin-bottom: 0.3rem;
}

.bio-title {
color: #555;
font-size: 0.95rem;
margin-bottom: 1.5rem;
line-height: 1.6;
}

.bio-card p {
color: #333;
font-size: 1.02rem;
line-height: 1.75;
margin-bottom: 1.1rem;
}

.bio-credentials {
margin-top: 1.75rem;
padding-top: 1.25rem;
border-top: 1px solid rgba(0, 23, 244, 0.2);
}

.bio-credentials h3 {
font-family: "Tomorrow", sans-serif;
font-size: 0.75rem;
letter-spacing: 0.18em;
text-transform: uppercase;
color: #555;
margin-bottom: 0.75rem;
}

.bio-credentials ul {
list-style: none;
}

.bio-credentials ul li {
font-size: 0.92rem;
color: #444;
padding: 0.3rem 0 0.3rem 1.2em;
position: relative;
line-height: 1.5;
}

.bio-credentials ul li::before {
content: '—';
position: absolute;
left: 0;
color: #0017F4;
font-size: 0.75rem;
top: 0.35rem;
}

/* =====================
   ABOUT — PRESENTATIONS SECTION
   Near-white (#f7f7fb), Plane 2 (behind bios).
===================== */

.presentations-section {
position: relative;
z-index: 10;
padding: 4rem 2rem;
background-color: #f7f7fb;
border-top: 1px solid rgba(0, 23, 244, 0.15);
border-bottom: 1px solid rgba(0, 23, 244, 0.15);
}

.presentations-inner {
max-width: 960px;
margin: 0 auto;
}

.presentations-inner h2 {
font-family: "Tomorrow", sans-serif;
font-size: clamp(1.4rem, 3vw, 2rem);
font-weight: 300;
color: #111;
margin-bottom: 2.5rem;
line-height: 1.25;
}

.presentations-inner h2 em {
color: #0017F4;
font-style: normal;
font-weight: 600;
}

.year-block {
margin-bottom: 3rem;
}

.year-label {
font-family: "Tomorrow", sans-serif;
font-size: 1.5rem;
font-weight: 700;
color: #111;
margin-bottom: 1.25rem;
letter-spacing: 0.05em;
padding-left: 0.75rem;
border-left: 4px solid #0017F4;
}

.pres-item {
border-left: 2px solid rgba(0, 23, 244, 0.2);
padding: 0.75rem 0 0.75rem 1.5rem;
margin-bottom: 0.25rem;
transition: border-color 0.3s ease;
}

.pres-item:hover {
border-left-color: #0017F4;
}

.pres-date {
font-family: "Tomorrow", sans-serif;
font-size: 0.75rem;
letter-spacing: 0.1em;
text-transform: uppercase;
color: #555;
margin-bottom: 0.25rem;
}

.pres-venue {
font-size: 0.82rem;
color: #555;
margin-bottom: 0.3rem;
font-style: italic;
}

.pres-title {
font-size: 1rem;
color: #222;
line-height: 1.5;
margin-bottom: 0.2rem;
}

.pres-note {
font-size: 0.82rem;
color: #555;
line-height: 1.5;
}

/* =====================
   AIFLUENCY — VIBE CODING
   White surface, Plane 3. Rises over hero.
===================== */

.vibe-coding {
position: relative;
z-index: 20;
margin-top: -50px;
background-color: white;
border-top: 8px solid #0017F4;
box-shadow:
0 -40px 80px rgba(0, 0, 0, 0.95),
0 -4px 0 rgba(0, 23, 244, 0.2);
}

.two-col {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 3rem;
align-items: start;
}

.two-col p {
color: #333;
font-size: 1.05rem;
line-height: 1.75;
margin-bottom: 1.25rem;
}

/* =====================
   AIFLUENCY — STUDENT PROJECTS
   Near-white (#f7f7fb), Plane 2.
===================== */

.student-projects {
position: relative;
z-index: 10;
background-color: #f7f7fb;
border-top: 1px solid rgba(0, 23, 244, 0.15);
border-bottom: 1px solid rgba(0, 23, 244, 0.15);
}

.project-examples {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 1px;
background-color: rgba(0, 23, 244, 0.15);
margin-top: 2rem;
}

.project-tile {
background-color: #f7f7fb;
padding: 1.5rem;
transition: background-color 0.3s ease;
}

.project-tile:hover {
background-color: rgba(0, 23, 244, 0.06);
}

.project-tile h3 {
font-family: "Tomorrow", sans-serif;
font-size: 0.95rem;
font-weight: 400;
color: #111;
margin-bottom: 0.5rem;
}

.project-tile p {
font-size: 0.9rem;
color: #555;
line-height: 1.55;
}

.note-below {
margin-top: 1.75rem;
}

.note-below p {
color: #333;
font-size: 1rem;
line-height: 1.7;
}

.note-below p em {
color: #111;
font-style: italic;
}

/* =====================
   AIFLUENCY — SESSION STRUCTURE
   White surface, Plane 3.
===================== */

.session-structure {
position: relative;
z-index: 20;
background-color: white;
border-top: 1px solid rgba(0, 23, 244, 0.15);
border-bottom: 1px solid rgba(0, 23, 244, 0.15);
}

.session-steps {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 1.5rem;
margin-top: 2rem;
}

.step {
border-top: 3px solid #0017F4;
padding-top: 1.25rem;
}

.step-time {
font-family: "Tomorrow", sans-serif;
font-size: 0.75rem;
letter-spacing: 0.15em;
text-transform: uppercase;
color: #0017F4;
margin-bottom: 0.4rem;
}

.step h3 {
font-family: "Tomorrow", sans-serif;
font-size: 0.98rem;
font-weight: 400;
color: #111;
margin-bottom: 0.6rem;
}

.step p {
font-size: 0.9rem;
color: #555;
line-height: 1.6;
}

/* =====================
   AIFLUENCY — THREE AUDIENCES
   Near-white (#f7f7fb), Plane 2.
===================== */

.three-audiences {
position: relative;
z-index: 10;
background-color: #f7f7fb;
border-top: 1px solid rgba(0, 23, 244, 0.15);
}

.intro-para {
color: #333;
font-size: 1.05rem;
line-height: 1.7;
margin-bottom: 2rem;
}

.audience-grid {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 1.5rem;
}

.audience-card {
border: 1px solid rgba(0, 23, 244, 0.3);
padding: 1.75rem;
background-color: white;
transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.audience-card:hover {
border-color: #0017F4;
box-shadow: 0 4px 20px rgba(0, 23, 244, 0.1);
}

.audience-num {
font-family: "Tomorrow", sans-serif;
font-size: 2.2rem;
font-weight: 700;
color: rgba(0, 23, 244, 0.15);
line-height: 1;
margin-bottom: 0.5rem;
}

.audience-card h3 {
font-family: "Tomorrow", sans-serif;
font-size: 1rem;
font-weight: 400;
color: #111;
margin-bottom: 0.4rem;
}

.audience-who {
font-size: 0.82rem;
font-family: "Tomorrow", sans-serif;
letter-spacing: 0.1em;
text-transform: uppercase;
color: #0017F4;
margin-bottom: 0.75rem;
}

.audience-card p {
font-size: 0.92rem;
color: #555;
line-height: 1.6;
}

/* =====================
   AIFLUENCY — TEACHING TEAM
   White surface, Plane 3.
===================== */

.teaching-team {
position: relative;
z-index: 20;
background-color: white;
border-top: 1px solid rgba(0, 23, 244, 0.15);
border-bottom: 1px solid rgba(0, 23, 244, 0.15);
}

.team-grid {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 2rem;
margin-top: 2rem;
}

.team-member {
padding: 1.5rem;
border-top: 3px solid rgba(0, 23, 244, 0.35);
}

.team-member h3 {
font-family: "Tomorrow", sans-serif;
font-size: 1.05rem;
font-weight: 400;
color: #111;
margin-bottom: 0.3rem;
}

.team-role {
font-size: 0.8rem;
font-family: "Tomorrow", sans-serif;
letter-spacing: 0.1em;
text-transform: uppercase;
color: #0017F4;
margin-bottom: 0.85rem;
}

.team-member p {
font-size: 0.92rem;
color: #555;
line-height: 1.65;
}

/* =====================
   AIFLUENCY — ANTHROPIC CREDENTIAL
   Near-white (#f0f2ff), Plane 2.
===================== */

.anthropic-badge {
position: relative;
z-index: 10;
background-color: #f0f2ff;
padding: 3rem 2rem;
border-top: 1px solid rgba(0, 23, 244, 0.2);
border-bottom: 1px solid rgba(0, 23, 244, 0.2);
}

.badge-inner {
max-width: 960px;
margin: 0 auto;
display: flex;
align-items: center;
gap: 3rem;
border: 1px solid rgba(0, 23, 244, 0.35);
padding: 2.5rem;
background-color: white;
}

.badge-icon {
width: 90px;
height: 90px;
border: 2px dotted #0017F4;
border-radius: 50%;
display: flex;
align-items: center;
justify-content: center;
flex-shrink: 0;
font-family: "Tomorrow", sans-serif;
font-size: 0.6rem;
color: #0017F4;
text-align: center;
letter-spacing: 0.08em;
text-transform: uppercase;
line-height: 1.5;
}

.badge-copy h3 {
font-family: "Tomorrow", sans-serif;
font-size: 1.1rem;
font-weight: 300;
color: #111;
margin-bottom: 0.5rem;
}

.badge-copy p {
color: #444;
font-size: 0.98rem;
line-height: 1.65;
}

/* =====================
   CONTACT — CONTACT AREA
   White surface, Plane 3. Rises over hero.
===================== */

.contact-wrap {
position: relative;
z-index: 20;
flex: 1;
margin-top: -50px;
padding: 5rem 2rem 4rem;
background-color: white;
border-top: 8px solid #0017F4;
box-shadow:
0 -40px 80px rgba(0, 0, 0, 0.95),
0 -4px 0 rgba(0, 23, 244, 0.2);
}

.contact-inner {
max-width: 960px;
margin: 0 auto;
display: grid;
grid-template-columns: 1fr 2fr;
gap: 4rem;
align-items: start;
}

.contact-info {
border-top: 3px solid #0017F4;
padding-top: 1.5rem;
}

.contact-info h2 {
font-family: "Tomorrow", sans-serif;
font-size: 1rem;
font-weight: 300;
letter-spacing: 0.15em;
text-transform: uppercase;
color: #0017F4;
margin-bottom: 2rem;
}

.presenter {
margin-bottom: 2.5rem;
}

.presenter h3 {
font-family: "Tomorrow", sans-serif;
font-size: 1rem;
font-weight: 400;
color: #111;
margin-bottom: 0.25rem;
}

.presenter .title {
font-size: 0.85rem;
color: #555;
line-height: 1.5;
margin-bottom: 0.85rem;
font-style: italic;
}

.presenter a {
display: block;
font-size: 0.92rem;
color: #0017F4;
text-decoration: none;
margin-bottom: 0.3rem;
transition: color 0.3s ease, text-decoration 0.3s ease;
}

.presenter a:hover,
.presenter a:focus {
text-decoration: underline;
color: black;
}

.presenter .location {
font-size: 0.85rem;
color: #555;
margin-top: 0.3rem;
}

.divider {
height: 1px;
background-color: rgba(0, 23, 244, 0.2);
margin: 2rem 0;
}

.form-section h2 {
font-family: "Tomorrow", sans-serif;
font-size: 1rem;
font-weight: 300;
letter-spacing: 0.15em;
text-transform: uppercase;
color: #0017F4;
margin-bottom: 2rem;
border-top: 3px solid #0017F4;
padding-top: 1.5rem;
}

.form-row {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 1.25rem;
margin-bottom: 1.25rem;
}

.form-group {
display: flex;
flex-direction: column;
margin-bottom: 1.25rem;
}

.form-group label {
font-family: "Tomorrow", sans-serif;
font-size: 0.75rem;
letter-spacing: 0.15em;
text-transform: uppercase;
color: #555;
margin-bottom: 0.5rem;
}

.form-group label .required {
color: #0017F4;
margin-left: 0.2rem;
}

.form-group input,
.form-group select,
.form-group textarea {
background-color: #f7f7fb;
border: 1px solid rgba(0, 23, 244, 0.25);
border-bottom: 2px solid rgba(0, 23, 244, 0.4);
color: #111;
font-family: "Roboto Condensed", sans-serif;
font-size: 1rem;
padding: 0.7rem 0.9rem;
transition: border-color 0.3s ease, background-color 0.3s ease;
outline: none;
width: 100%;
appearance: none;
-webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
border-color: #0017F4;
background-color: white;
box-shadow: 0 0 0 3px rgba(0, 23, 244, 0.1);
}

.form-group select {
background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%230017F4' stroke-width='2' fill='none'/%3E%3C/svg%3E");
background-repeat: no-repeat;
background-position: right 0.9rem center;
padding-right: 2.5rem;
cursor: pointer;
}

.form-group select option {
background-color: white;
color: #111;
}

.form-group textarea {
resize: vertical;
min-height: 120px;
line-height: 1.5;
}

.submit-btn {
display: inline-block;
font-family: "Tomorrow", sans-serif;
font-size: 1rem;
letter-spacing: 0.08em;
color: white;
background-color: #0017F4;
border: 2px solid #0017F4;
padding: 0.8rem 2.5rem;
cursor: pointer;
transition: background-color 0.3s ease, color 0.3s ease;
margin-top: 0.5rem;
}

.submit-btn:hover,
.submit-btn:focus {
background-color: black;
border-color: black;
color: white;
outline: none;
}

.msg-success {
background-color: #efffef;
border: 1px solid #2a7a2a;
border-left: 4px solid #2a7a2a;
padding: 1.25rem 1.5rem;
margin-bottom: 2rem;
font-family: "Tomorrow", sans-serif;
font-size: 0.95rem;
color: #0a4a0a;
line-height: 1.6;
}

.msg-error {
background-color: #fff2f2;
border: 1px solid #c00000;
border-left: 4px solid #c00000;
padding: 1.25rem 1.5rem;
margin-bottom: 2rem;
font-family: "Tomorrow", sans-serif;
font-size: 0.95rem;
color: #c00000;
line-height: 1.6;
}

/* =====================
   TOPICS — TOPIC 1 (AI & EDUCATION)
   White surface, Plane 3. Rises over hero.
===================== */

.topic-number {
font-family: "Tomorrow", sans-serif;
font-size: 4rem;
font-weight: 700;
color: rgba(0, 23, 244, 0.1);
line-height: 1;
margin-bottom: 0.25rem;
}

.topic-education {
position: relative;
z-index: 20;
margin-top: -50px;
background-color: white;
border-top: 8px solid #0017F4;
box-shadow: 0 -40px 80px rgba(0, 0, 0, 0.95), 0 -4px 0 rgba(0, 23, 244, 0.2);
}

.subsection-grid {
display: grid;
grid-template-columns: repeat(2, 1fr);
gap: 1.5rem;
margin-top: 2rem;
}

.subsection-card {
border: 1px solid rgba(0, 23, 244, 0.25);
padding: 1.75rem;
background-color: white;
transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.subsection-card:hover {
border-color: #0017F4;
box-shadow: 0 4px 20px rgba(0, 23, 244, 0.1);
}

.subsection-card h3 {
font-family: "Tomorrow", sans-serif;
font-size: 1.05rem;
font-weight: 400;
color: #111;
margin-bottom: 0.75rem;
letter-spacing: 0.02em;
}

.subsection-card p {
font-size: 0.97rem;
color: #444;
line-height: 1.7;
}

.audience-tags {
display: flex;
flex-wrap: wrap;
gap: 0.5rem;
margin-top: 1rem;
}

.tag {
font-family: "Tomorrow", sans-serif;
font-size: 0.7rem;
letter-spacing: 0.1em;
text-transform: uppercase;
color: #555;
border: 1px solid rgba(0, 23, 244, 0.3);
padding: 0.25rem 0.6rem;
}

/* =====================
   TOPICS — TOPIC 2 (AI FLUENCY)
   Near-white (#f7f7fb), Plane 2.
===================== */

.topic-fluency {
position: relative;
z-index: 10;
background-color: #f7f7fb;
border-top: 1px solid rgba(0, 23, 244, 0.15);
border-bottom: 1px solid rgba(0, 23, 244, 0.15);
}

.fluency-intro {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 3rem;
margin-bottom: 3rem;
}

.fluency-intro p {
color: #333;
font-size: 1.02rem;
line-height: 1.75;
margin-bottom: 1rem;
}

.samples-label {
font-family: "Tomorrow", sans-serif;
font-size: 0.8rem;
letter-spacing: 0.2em;
text-transform: uppercase;
color: #555;
margin-bottom: 1.25rem;
padding-top: 2rem;
border-top: 1px solid rgba(0, 23, 244, 0.2);
}

.samples-grid {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 1px;
background-color: rgba(0, 23, 244, 0.15);
}

.sample-card {
background-color: white;
padding: 1.5rem;
min-height: 200px;
display: flex;
flex-direction: column;
justify-content: space-between;
transition: background-color 0.3s ease;
}

.sample-card:hover {
background-color: #f0f2ff;
}

.sample-card.placeholder {
opacity: 0.7;
}

.sample-title {
font-family: "Tomorrow", sans-serif;
font-size: 0.95rem;
font-weight: 400;
color: #111;
margin-bottom: 0.5rem;
}

.sample-student {
font-size: 0.8rem;
color: #555;
margin-bottom: 0.75rem;
}

.sample-desc {
font-size: 0.88rem;
color: #444;
line-height: 1.55;
flex: 1;
}

.sample-link {
display: inline-block;
font-family: "Tomorrow", sans-serif;
font-size: 0.75rem;
letter-spacing: 0.1em;
text-transform: uppercase;
color: #0017F4;
text-decoration: none;
margin-top: 1rem;
transition: color 0.3s ease;
}

.sample-link:hover,
.sample-link:focus {
color: black;
text-decoration: underline;
}

.placeholder-icon {
width: 100%;
height: 60px;
border: 1px dashed rgba(0, 23, 244, 0.3);
display: flex;
align-items: center;
justify-content: center;
margin-bottom: 0.75rem;
}

.placeholder-icon span {
font-family: "Tomorrow", sans-serif;
font-size: 0.65rem;
letter-spacing: 0.15em;
text-transform: uppercase;
color: #555;
}

/* =====================
   TOPICS — FORMAT SECTION
   White surface, Plane 3.
===================== */

.format-section {
position: relative;
z-index: 20;
background-color: white;
border-top: 1px solid rgba(0, 23, 244, 0.15);
border-bottom: 1px solid rgba(0, 23, 244, 0.15);
}

.format-grid {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 1.5rem;
margin-top: 2rem;
}

.format-card {
border-top: 3px solid #0017F4;
padding-top: 1.25rem;
}

.format-card h3 {
font-family: "Tomorrow", sans-serif;
font-size: 1rem;
font-weight: 400;
color: #111;
margin-bottom: 0.6rem;
}

.format-card p {
font-size: 0.92rem;
color: #444;
line-height: 1.65;
}

/* =====================
   PRIVACY & TERMS — POLICY PAGES
   White surface, Plane 3. Rises over hero.
===================== */

.policy-wrap {
position: relative;
z-index: 20;
flex: 1;
margin-top: -50px;
padding: 5rem 2rem 4rem;
background-color: white;
border-top: 8px solid #0017F4;
box-shadow: 0 -40px 80px rgba(0, 0, 0, 0.95), 0 -4px 0 rgba(0, 23, 244, 0.2);
}

.policy-inner {
max-width: 780px;
margin: 0 auto;
}

.policy-inner h2 {
font-family: "Tomorrow", sans-serif;
font-size: 1.1rem;
font-weight: 400;
color: #111;
margin-top: 2.5rem;
margin-bottom: 0.75rem;
padding-bottom: 0.5rem;
border-bottom: 2px solid #0017F4;
}

.policy-inner h2:first-of-type {
margin-top: 0;
}

.policy-inner p {
color: #333;
font-size: 1.02rem;
line-height: 1.8;
margin-bottom: 1.1rem;
}

.policy-inner ul {
list-style: none;
margin-bottom: 1.1rem;
}

.policy-inner ul li {
color: #333;
font-size: 1.02rem;
line-height: 1.8;
padding: 0.2rem 0 0.2rem 1.4em;
position: relative;
}

.policy-inner ul li::before {
content: '—';
position: absolute;
left: 0;
color: #0017F4;
font-size: 0.85rem;
top: 0.3rem;
}

.policy-inner a {
color: #0017F4;
text-decoration: none;
}

.policy-inner a:hover,
.policy-inner a:focus {
text-decoration: underline;
color: black;
}

.last-updated {
font-family: "Tomorrow", sans-serif;
font-size: 0.8rem;
letter-spacing: 0.1em;
color: #555;
margin-bottom: 2.5rem;
text-transform: uppercase;
}

/* =====================
   RESPONSIVE — TABLET (≤ 768px)
===================== */

@media (max-width: 768px) {
.header-inner {
flex-direction: column;
align-items: flex-start;
gap: 0.75rem;
}

header nav ul {
gap: 1.25rem;
}

.intro-inner {
grid-template-columns: 1fr;
}

.bios-inner {
grid-template-columns: 1fr;
gap: 3rem;
}

.two-col {
grid-template-columns: 1fr;
gap: 1.5rem;
}

.project-examples {
grid-template-columns: 1fr 1fr;
}

.session-steps {
grid-template-columns: 1fr 1fr;
}

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

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

.badge-inner {
flex-direction: column;
gap: 1.5rem;
}

.contact-inner {
grid-template-columns: 1fr;
gap: 2.5rem;
}

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

.fluency-intro {
grid-template-columns: 1fr;
gap: 1.5rem;
}

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

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

.hero-banner::before {
width: 300px;
height: 300px;
}

.hero-banner::after {
display: none;
}

footer nav ul {
gap: 1rem;
font-size: 0.9rem;
}
}

/* =====================
   RESPONSIVE — MOBILE (≤ 480px)
===================== */

@media (max-width: 480px) {
header nav ul {
gap: 1rem;
}

header nav a {
font-size: 1rem;
}

.hero-banner {
padding: 3rem 1.5rem 2.5rem;
}

.hero-banner::before {
display: none;
}

.hero-grid {
grid-template-columns: 1fr;
grid-template-rows: repeat(4, 25vh);
}

.outer-circle {
width: 80vw;
min-width: unset;
}

.inner-circle {
width: calc(100% - 60px);
height: calc(100% - 60px);
}

.quarter span {
font-size: 0.9rem;
}

.cert-panel {
display: none;
}

.intro {
padding: 3rem 1.5rem;
}

.bios-section {
margin-top: -30px;
padding: 3rem 1.5rem;
}

.presentations-section {
padding: 3rem 1.5rem;
}

.vibe-coding {
margin-top: -30px;
}

.project-examples {
grid-template-columns: 1fr;
}

.session-steps {
grid-template-columns: 1fr;
}

.contact-wrap {
margin-top: -30px;
padding: 3rem 1.5rem;
}

.form-row {
grid-template-columns: 1fr;
}

.topic-education {
margin-top: -30px;
}

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

.policy-wrap {
margin-top: -30px;
padding: 3rem 1.5rem;
}

.cta-section {
padding: 3rem 1.5rem;
}

section {
padding: 3rem 1.5rem;
}
}

/* =====================
   RESPONSIVE — SMALLEST MOBILE (≤ 320px)
===================== */

@media (max-width: 320px) {
header {
padding: 0.75rem;
}

.header-inner {
flex-direction: column;
gap: 0.4rem;
}

header nav ul {
flex-direction: column;
gap: 0.4rem;
}

header nav a {
font-size: 0.9rem;
}

.hero-banner {
padding: 2rem 1rem;
}

.inner-circle {
width: calc(100% - 40px);
height: calc(100% - 40px);
}

.quarter span {
font-size: 0.75rem;
}

.intro {
padding: 2rem 1rem;
}

.bios-section {
padding: 2rem 1rem;
}

.presentations-section {
padding: 2rem 1rem;
}

.contact-wrap {
padding: 2rem 1rem;
}

.policy-wrap {
padding: 2rem 1rem;
}

.badge-inner {
padding: 1.5rem;
}

section {
padding: 2rem 1rem;
}
}