:root {
  --green-950: #061f14;
  --green-900: #082b1b;
  --green-800: #0b4228;
  --lime: #d8ff43;
  --lime-soft: #edff9d;
  --clay: #be4d2d;
  --cream: #f4f2ea;
  --ink: #111713;
  --white: #fff;
  --line: rgba(17, 23, 19, .14);
  --shadow: 0 24px 70px rgba(4, 30, 18, .16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--cream); color: var(--ink); font-family: "Manrope", sans-serif; font-size: 16px; line-height: 1.65; overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.skip-link { position: fixed; left: 1rem; top: -5rem; z-index: 100; background: var(--lime); color: var(--ink); padding: .75rem 1rem; font-weight: 700; }
.skip-link:focus { top: 1rem; }

.site-header { position: fixed; z-index: 50; top: 0; left: 0; width: 100%; height: 84px; padding: 0 clamp(1.25rem, 5vw, 5rem); display: flex; align-items: center; justify-content: space-between; color: #fff; transition: .35s ease; }
.site-header::after { content: ""; position: absolute; left: clamp(1.25rem, 5vw, 5rem); right: clamp(1.25rem, 5vw, 5rem); bottom: 0; height: 1px; background: rgba(255,255,255,.25); }
.site-header.scrolled { height: 70px; background: rgba(6, 31, 20, .96); backdrop-filter: blur(14px); box-shadow: 0 10px 40px rgba(0,0,0,.18); }
.brand { display: inline-flex; align-items: center; gap: .75rem; text-decoration: none; text-transform: uppercase; line-height: 1; }
.brand strong, .brand small { display: block; }
.brand strong { font-family: "Barlow Condensed", sans-serif; font-size: 1.18rem; letter-spacing: .06em; }
.brand small { margin-top: .22rem; font-size: .62rem; letter-spacing: .28em; opacity: .7; }
.brand-logo { width: 48px; height: 48px; flex: 0 0 48px; border-radius: 50%; object-fit: cover; background: #fff; border: 2px solid rgba(255,255,255,.88); box-shadow: 0 0 0 5px rgba(216,255,67,.12); }
.desktop-nav { display: flex; gap: clamp(1rem, 3vw, 2.5rem); }
.desktop-nav a { text-decoration: none; font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .12em; position: relative; }
.desktop-nav a::after { content: ""; position: absolute; left: 0; bottom: -.5rem; height: 2px; width: 0; background: var(--lime); transition: width .25s; }
.desktop-nav a:hover::after, .desktop-nav a:focus-visible::after { width: 100%; }

.button { display: inline-flex; align-items: center; justify-content: center; gap: 1rem; min-height: 54px; padding: .9rem 1.4rem; border: 1px solid #208052; background: #208052; color: #fff; text-decoration: none; font-weight: 800; text-transform: uppercase; letter-spacing: .07em; font-size: .76rem; box-shadow: 7px 7px 0 rgba(216,255,67,.18); transition: transform .2s, box-shadow .2s, background .2s; }
.button:hover { transform: translate(-2px,-2px); box-shadow: 11px 11px 0 rgba(216,255,67,.18); }
.button:focus-visible, a:focus-visible { outline: 3px solid #fff; outline-offset: 4px; }
.button-small { min-height: 43px; padding: .65rem 1.15rem; box-shadow: none; }

.hero { min-height: 810px; height: 100svh; max-height: 980px; position: relative; display: grid; align-items: center; overflow: hidden; padding-bottom: clamp(3rem, 8vh, 5rem); background: var(--green-950); color: #fff; }
.hero-image, .hero-shade { position: absolute; inset: 0; }
.hero-image { background: url("assets/tennis-impact-hero.png") center / cover no-repeat; transform: scale(1.015); }
.hero-shade { background: linear-gradient(90deg, rgba(3,20,12,.96) 0%, rgba(3,20,12,.88) 34%, rgba(3,20,12,.28) 64%, rgba(3,20,12,.06) 100%), linear-gradient(0deg, rgba(3,20,12,.52), transparent 40%); }
.hero-content { position: relative; z-index: 3; width: min(760px, 91vw); margin-left: clamp(1.25rem, 8vw, 8rem); padding-top: 4rem; }
.eyebrow, .section-number { margin: 0 0 1.4rem; font-size: .72rem; font-weight: 800; text-transform: uppercase; letter-spacing: .2em; }
.eyebrow { display: flex; align-items: center; gap: .8rem; color: var(--lime); }
.eyebrow span { display: block; width: 38px; height: 2px; background: currentColor; }
.hero h1, .section-heading h2, .experience h2, .cta h2 { font-family: "Barlow Condensed", sans-serif; text-transform: uppercase; letter-spacing: -.035em; line-height: .88; margin: 0; }
.hero h1 { font-size: clamp(4rem, 8.8vw, 8rem); max-width: 760px; }
.hero h1 em, .cta h2 em { color: var(--lime); font-style: normal; }
.hero-copy { max-width: 590px; font-size: clamp(1rem, 1.6vw, 1.18rem); color: rgba(255,255,255,.78); margin: 2rem 0; }
.hero-actions { display: flex; align-items: center; gap: 2rem; flex-wrap: wrap; }
.text-link { font-weight: 700; font-size: .83rem; text-decoration: none; text-transform: uppercase; letter-spacing: .08em; border-bottom: 1px solid rgba(255,255,255,.45); padding-bottom: .3rem; }
.season-note { margin-top: 2.6rem; display: flex; align-items: center; gap: .8rem; color: rgba(255,255,255,.88); }
.season-note .season-icon { color: var(--lime); font-size: 1.6rem; line-height: 1; }
.season-note strong, .season-note small { display: block; }
.season-note strong { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; }.season-note small { color: rgba(255,255,255,.55); font-size: .72rem; margin-top: .12rem; }
.court-line { position: absolute; z-index: 2; height: 1px; background: rgba(216,255,67,.42); transform-origin: left; pointer-events: none; }
.court-line-one { width: 52vw; right: -12vw; bottom: 19%; transform: rotate(-25deg); }.court-line-two { height: 45vh; width: 1px; right: 18%; bottom: -10%; background: rgba(255,255,255,.3); transform: rotate(25deg); }
.hero-index { position: absolute; z-index: 3; right: clamp(1.25rem, 4vw, 4rem); bottom: 3rem; display: flex; align-items: center; gap: .65rem; writing-mode: vertical-rl; font-size: .65rem; letter-spacing: .16em; color: rgba(255,255,255,.7); }
.hero-index i { width: 1px; height: 44px; background: rgba(255,255,255,.35); }

.section-shell { width: min(1240px, calc(100% - 2.5rem)); margin: 0 auto; }
.intro { min-height: 410px; display: grid; grid-template-columns: 1fr 3.2fr auto; align-items: center; gap: 3rem; border-bottom: 1px solid var(--line); position: relative; }
.intro-kicker { align-self: start; padding-top: 5.7rem; font-size: .68rem; font-weight: 800; text-transform: uppercase; letter-spacing: .18em; color: var(--clay); }
.intro-statement { font-family: "Barlow Condensed", sans-serif; font-size: clamp(3rem, 6vw, 6rem); text-transform: uppercase; line-height: .92; letter-spacing: -.03em; margin: 0; max-width: 900px; }
.intro-statement strong { color: var(--green-800); }
.intro-mark { width: 130px; position: relative; }
.mini-ball { display: block; width: 86px; aspect-ratio: 1; border-radius: 50%; background: var(--lime); box-shadow: var(--shadow); }
.speed-line { position: absolute; width: 100px; height: 2px; background: var(--clay); right: 60%; top: 50%; }

.courses, .details { padding: clamp(5rem, 10vw, 9rem) 0; }
.section-heading { display: grid; grid-template-columns: 1.15fr .65fr; gap: 5rem; align-items: end; margin-bottom: 4rem; }
.section-number { color: var(--clay); }
.section-heading h2, .experience h2 { font-size: clamp(3.7rem, 7vw, 7rem); }
.section-heading > p { max-width: 500px; margin: 0 0 .6rem; color: #525b55; font-size: 1.02rem; }
.course-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.1rem; }
.course-card { min-height: 520px; padding: 1.5rem; display: flex; flex-direction: column; position: relative; overflow: hidden; border: 1px solid var(--line); background: #fff; transition: transform .3s, box-shadow .3s; }
.course-card:hover { transform: translateY(-8px); box-shadow: var(--shadow); }
.course-card::after { content: ""; position: absolute; width: 220px; height: 220px; border-radius: 50%; border: 1px solid currentColor; opacity: .08; right: -80px; top: 90px; box-shadow: 0 0 0 25px currentColor, 0 0 0 50px currentColor; }
.card-base { background: var(--lime); }.card-advanced { background: var(--green-900); color: #fff; border-color: var(--green-900); }
.course-topline { display: flex; justify-content: space-between; padding-bottom: 1rem; border-bottom: 1px solid currentColor; font-size: .68rem; text-transform: uppercase; letter-spacing: .12em; opacity: .7; }
.course-icon { margin: 3.2rem 0 1.7rem; font-size: 3.2rem; color: var(--clay); line-height: 1; }.card-base .course-icon { color: var(--green-800); }.card-advanced .course-icon { color: var(--lime); }
.course-card h3 { font-family: "Barlow Condensed", sans-serif; font-size: clamp(2.4rem, 4vw, 3.8rem); line-height: .95; text-transform: uppercase; margin: 0 0 1.1rem; }
.course-card p { margin: 0; max-width: 32ch; opacity: .75; }
.course-card ul { list-style: none; padding: 0; margin: auto 0 0; border-top: 1px solid currentColor; }
.course-card li { display: flex; justify-content: space-between; gap: 1rem; padding: .85rem 0; border-bottom: 1px solid currentColor; font-size: .78rem; }
.course-card li span { opacity: .7; }.course-card li strong { font-size: 1rem; }

.experience { min-height: 680px; display: grid; grid-template-columns: 1.25fr .75fr; background: var(--green-900); color: #fff; }
.experience-photo { min-height: 680px; background: url("assets/tennis-court-sunset.png") center / cover no-repeat; filter: saturate(.92); }
.experience-panel { padding: clamp(3rem, 7vw, 7rem); display: flex; flex-direction: column; justify-content: center; position: relative; overflow: hidden; }
.experience-panel::before { content: ""; position: absolute; width: 400px; height: 400px; border: 1px solid rgba(216,255,67,.22); border-radius: 50%; right: -190px; top: -130px; box-shadow: 0 0 0 45px rgba(216,255,67,.04), 0 0 0 90px rgba(216,255,67,.03); }
.section-number.light { color: var(--lime); }.experience-panel p:not(.section-number) { color: rgba(255,255,255,.68); max-width: 480px; margin: 2rem 0; }
.button-light { align-self: flex-start; }

.detail-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.detail-card { min-height: 280px; padding: 2rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); position: relative; background: rgba(255,255,255,.35); }
.detail-index { font-size: .68rem; letter-spacing: .16em; color: var(--clay); }.detail-emoji { float: right; font-size: 1.7rem; }
.detail-card h3 { font-family: "Barlow Condensed", sans-serif; font-size: clamp(2rem, 3.5vw, 3.1rem); line-height: 1; text-transform: uppercase; margin: 4rem 0 .8rem; }
.detail-card p { max-width: 47ch; margin: 0; color: #56605a; }

.cta { position: relative; background: var(--lime); min-height: 640px; padding: clamp(4rem, 9vw, 8rem); display: grid; grid-template-columns: 1fr minmax(310px, .65fr); align-items: center; gap: 7vw; overflow: hidden; }
.cta-copy { position: relative; z-index: 2; }.eyebrow.dark { color: var(--green-900); }.cta h2 { font-size: clamp(4.1rem, 8vw, 8.4rem); color: var(--green-950); }.cta h2 em { color: var(--clay); }
.button-dark { margin-top: 2.3rem; background: var(--green-950); color: #fff; border-color: var(--green-950); box-shadow: 8px 8px 0 rgba(6,31,20,.18); }
.contact-card { position: relative; z-index: 2; font-style: normal; background: var(--green-950); color: #fff; padding: clamp(1.8rem, 4vw, 3.2rem); box-shadow: 18px 18px 0 rgba(6,31,20,.15); }
.contact-card div { padding: 1.2rem 0; border-bottom: 1px solid rgba(255,255,255,.16); }.contact-card div:last-child { border-bottom: 0; }
.contact-card small, .contact-card strong, .contact-card span, .contact-card a { display: block; }
.contact-card small { color: var(--lime); text-transform: uppercase; letter-spacing: .16em; font-size: .62rem; margin-bottom: .35rem; }.contact-card strong { font-size: 1.05rem; }.contact-card span, .contact-card a { color: rgba(255,255,255,.7); text-decoration: none; font-size: .88rem; }
.cta-ball { position: absolute; width: min(38vw, 500px); aspect-ratio: 1; border-radius: 50%; right: -12vw; bottom: -42%; border: 2px solid rgba(6,31,20,.15); box-shadow: 0 0 0 45px rgba(6,31,20,.04), 0 0 0 90px rgba(6,31,20,.035); }

footer { min-height: 170px; padding: 2.5rem clamp(1.25rem, 5vw, 5rem); display: flex; justify-content: space-between; align-items: center; gap: 2rem; background: var(--green-950); color: #fff; }
.footer-brand .brand-logo { width: 46px; height: 46px; flex-basis: 46px; }.footer-brand strong { font-size: 1rem; } footer p, footer > a { font-size: .7rem; color: rgba(255,255,255,.55); text-transform: uppercase; letter-spacing: .12em; } footer > a { text-decoration: none; }
.mobile-cta { display: none; }

.reveal { opacity: 0; transform: translateY(30px); transition: opacity .75s ease, transform .75s ease; }
.reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; }.reveal { opacity: 1; transform: none; transition: none; }.course-card, .button { transition: none; } }

@media (max-width: 980px) {
  .desktop-nav { display: none; }
  .hero { min-height: 760px; }
  .hero-shade { background: linear-gradient(90deg, rgba(3,20,12,.95), rgba(3,20,12,.58) 72%, rgba(3,20,12,.26)); }
  .intro { grid-template-columns: 1fr; gap: 1.6rem; padding: 5rem 0; min-height: auto; }.intro-kicker { padding: 0; }.intro-mark { display: none; }
  .section-heading { grid-template-columns: 1fr; gap: 2rem; }
  .course-grid { grid-template-columns: 1fr; }.course-card { min-height: 470px; }
  .experience { grid-template-columns: 1fr; }.experience-photo { min-height: 480px; }.experience-panel { min-height: 520px; }
  .cta { grid-template-columns: 1fr; }.contact-card { max-width: 620px; }
}

@media (max-width: 640px) {
  body { padding-bottom: 66px; }
  .site-header { height: 70px; padding: 0 1rem; }.site-header::after { left: 1rem; right: 1rem; }.site-header .button { display: none; }
  .brand strong { font-size: 1rem; }.brand-logo { width: 42px; height: 42px; flex-basis: 42px; }
  .hero { min-height: 780px; height: 100svh; max-height: none; align-items: end; padding-bottom: 0; }
  .hero-image { background-position: 64% center; }.hero-shade { background: linear-gradient(0deg, rgba(3,20,12,.98) 8%, rgba(3,20,12,.84) 55%, rgba(3,20,12,.26) 100%); }
  .hero-content { margin: 0; padding: 0 1.25rem 4.2rem; width: 100%; }.hero h1 { font-size: clamp(3.65rem, 18vw, 5.4rem); }.hero-copy { margin: 1.4rem 0; font-size: .96rem; }.hero-actions { gap: 1.2rem; }.hero-actions .button { width: 100%; }.season-note { margin-top: 1.6rem; }.hero-index, .court-line { display: none; }
  .section-shell { width: min(100% - 2rem, 1240px); }
  .intro { padding: 4rem 0; }.intro-statement { font-size: 3.4rem; }
  .courses, .details { padding: 5rem 0; }.section-heading { margin-bottom: 2.5rem; }.section-heading h2, .experience h2 { font-size: 4rem; }
  .course-card { min-height: 500px; padding: 1.3rem; }.course-card h3 { font-size: 3.2rem; }
  .experience-photo { min-height: 340px; }.experience-panel { min-height: 500px; padding: 3.5rem 1.3rem; }
  .detail-grid { grid-template-columns: 1fr; }.detail-card { min-height: 245px; padding: 1.4rem; }.detail-card h3 { margin-top: 3rem; }
  .cta { padding: 5rem 1.25rem; min-height: auto; gap: 3.5rem; }.cta h2 { font-size: 4.6rem; }.contact-card { padding: 1.6rem; box-shadow: 10px 10px 0 rgba(6,31,20,.15); }.contact-card a { overflow-wrap: anywhere; }
  footer { padding: 2.5rem 1.25rem; flex-direction: column; align-items: flex-start; min-height: 220px; }
  .mobile-cta { position: fixed; z-index: 60; bottom: 0; left: 0; right: 0; min-height: 66px; display: flex; justify-content: space-between; align-items: center; padding: 0 1.25rem; background: var(--lime); color: var(--green-950); text-decoration: none; text-transform: uppercase; letter-spacing: .07em; font-size: .72rem; font-weight: 800; border-top: 1px solid rgba(6,31,20,.2); }
}