:root{
  --blue:#1e3a8a;
  --blue-deep:#152a63;
  --orange:#f59e0b;
  --paper:#ffffff;
  --ink:#1a1d29;
  --ink-dim:#6b7280;
  --border:#e5e7eb;
  --bg:#f7f8fb;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:'Tajawal',Tahoma,sans-serif;line-height:1.7}
h1,h2,h3,.brand__name{font-family:'Cairo',sans-serif}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
.container{max-width:1280px;margin-inline:auto;padding-inline:24px}

/* ---- Nav with underline-slide ---- */
.nav{position:sticky;inset-block-start:0;z-index:80;background:#fff;border-block-end:1px solid var(--border)}
.nav__inner{max-width:1280px;margin-inline:auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px}
.brand__mark{width:38px;height:38px;background:var(--blue);border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700}
.brand__name{font-size:16px;color:var(--blue)}
.nav__links{display:flex;gap:6px;position:relative}
.nav__link{position:relative;padding:10px 16px;font-size:14.5px;color:var(--ink-dim);font-weight:600}
.nav__link::after{content:'';position:absolute;inset-inline:16px;inset-block-end:0;height:2px;background:var(--orange);transform:scaleX(0);transition:transform .2s}
.nav__link:hover::after,.nav__link.is-active::after{transform:scaleX(1)}
.nav__link:hover,.nav__link.is-active{color:var(--blue)}
.nav__toggle{display:none;background:none;border:1px solid var(--blue);color:var(--blue);padding:8px 12px;border-radius:6px}

/* ---- Split-screen shell (archetype C): fixed summary panel + independently scrolling content ---- */
.split-fixed{position:fixed;inset-block:0;inset-inline-start:0;width:42%;color:#fff;z-index:10;overflow:hidden}
.split-fixed__bg{position:absolute;inset:0}
.split-fixed__bg img{width:100%;height:100%;object-fit:cover;filter:brightness(.4)}
.split-fixed__veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(21,42,99,.7),rgba(21,42,99,.92))}
.split-fixed__content{position:relative;height:100%;display:flex;flex-direction:column;justify-content:center;padding:40px;padding-block-start:76px;overflow-y:auto}
.split-fixed .brand{margin-block-end:22px}
.split-fixed__brand{color:#fff}
.split-fixed__nav{display:flex;flex-direction:column;gap:4px;margin-block:22px;padding-block:18px;border-block:1px solid rgba(255,255,255,.15)}
.split-fixed__nav .nav__link{color:#dbe0ee;padding:8px 0}
.split-fixed__nav .nav__link.is-active,.split-fixed__nav .nav__link:hover{color:var(--orange)}
.split-fixed__nav .nav__link::after{background:var(--orange)}
.split-fixed__cd-note{color:#dbe0ee;font-size:13px;margin:10px 0 22px}

.split-scroll{margin-inline-start:42%;min-height:100vh}

@media (max-width:900px){
  .split-fixed{position:static;width:100%;height:auto;min-height:0}
  .split-fixed__content{padding:32px 24px;height:auto}
  .split-scroll{margin-inline-start:0}
}

/* ---- Hero (legacy rules, unused after split-screen retrofit but harmless) ---- */
.hero{position:relative;color:#fff}
.hero__img{width:100%;height:62vh;min-height:420px;object-fit:cover;filter:brightness(.45)}
.hero__overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;text-align:center}
.hero__content{max-width:700px;padding:0 24px}
.hero__eyebrow{color:var(--orange);letter-spacing:2px;text-transform:uppercase;font-size:13px;margin-block-end:14px;display:block;font-weight:700}
.hero__title{font-size:clamp(28px,5vw,48px);margin:0 0 18px}
.hero__lead{color:#e2e6f0;font-size:16px;margin:0 0 26px}
.btn{display:inline-block;padding:14px 30px;border-radius:6px;font-weight:700;font-size:15px;border:none}
.btn--orange{background:var(--orange);color:#1a1d29}
.btn--outline{border:1.5px solid #fff;color:#fff;background:none}

/* countdown */
.countdown{display:flex;gap:14px;justify-content:center;margin-block-start:28px}
.countdown__unit{background:rgba(255,255,255,.12);backdrop-filter:blur(6px);border-radius:8px;padding:12px 16px;min-width:70px;text-align:center}
.countdown__num{font-size:26px;font-weight:700;font-family:'Cairo',sans-serif}
.countdown__label{font-size:11.5px;color:#dbe0ee}

/* ---- Category tabs ---- */
.catalog{padding:70px 0}
.catalog__head{text-align:center;margin-block-end:36px}
.catalog__head h2{font-size:clamp(24px,3.5vw,36px);margin:0 0 10px}
.catalog__head p{color:var(--ink-dim);margin:0}
.tabs{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-block-end:36px}
.tab{border:1px solid var(--border);background:#fff;padding:10px 20px;border-radius:999px;font-size:14px;font-weight:600;color:var(--ink-dim)}
.tab.is-active{background:var(--blue);color:#fff;border-color:var(--blue)}

.courses-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.course-card{background:#fff;border:1px solid var(--border);border-radius:12px;overflow:hidden;display:flex;flex-direction:column}
.course-card__img{aspect-ratio:16/10;object-fit:cover;width:100%}
.course-card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.course-card__cat{font-size:11.5px;color:var(--blue);font-weight:700}
.course-card__title{font-size:17px;margin:0}
.course-card__meta{display:flex;gap:14px;font-size:13px;color:var(--ink-dim)}
.course-card__price{font-size:18px;font-weight:700;color:var(--blue-deep);margin-block-start:auto}
.course-card__btn{background:var(--blue);color:#fff;padding:10px;border-radius:6px;font-size:13.5px;font-weight:700;text-align:center}

/* ---- Course modal + accordion ---- */
.modal-backdrop{position:fixed;inset:0;background:rgba(15,17,26,.7);z-index:200;display:none;align-items:center;justify-content:center;padding:16px}
.modal-backdrop.is-open{display:flex}
.modal{background:#fff;border-radius:14px;max-width:720px;width:100%;max-height:88vh;overflow-y:auto;position:relative}
.modal__close{position:absolute;inset-block-start:14px;inset-inline-end:14px;width:34px;height:34px;border-radius:50%;background:#fff;border:1px solid var(--border);font-size:15px;z-index:2}
.modal__img{width:100%;aspect-ratio:16/9;object-fit:cover}
.modal__body{padding:28px}
.modal__body h3{margin:0 0 6px;font-size:23px}
.modal__price{font-size:22px;color:var(--blue);font-weight:700;margin-block:14px}
.accordion-item{border:1px solid var(--border);border-radius:8px;margin-block-end:10px;overflow:hidden}
.accordion-head{padding:14px 16px;display:flex;justify-content:space-between;align-items:center;font-weight:700;font-size:14.5px;background:#f9fafc}
.accordion-body{max-height:0;overflow:hidden;transition:max-height .3s ease}
.accordion-body__inner{padding:14px 16px;color:var(--ink-dim);font-size:14px}
.accordion-item.is-open .accordion-body{max-height:300px}
.accordion-item.is-open .accordion-head{color:var(--blue)}

/* ---- Login screen ---- */
.login-section{background:var(--blue-deep);padding:70px 0;color:#fff}
.login-card{max-width:400px;margin:0 auto;background:#fff;color:var(--ink);border-radius:12px;padding:34px}
.login-card h3{margin-block-start:0;color:var(--blue)}
.form-row{margin-block-end:16px}
.form-row label{display:block;font-size:13px;font-weight:700;margin-block-end:6px}
.form-row input{width:100%;padding:12px;border:1px solid var(--border);border-radius:6px;font-family:inherit}
.login-submit{width:100%;background:var(--blue);color:#fff;border:none;padding:13px;border-radius:6px;font-weight:700}

/* ---- Testimonials ---- */
.testimonials{padding:70px 0}
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.testi-card{background:#fff;border:1px solid var(--border);border-radius:12px;padding:24px}
.testi-card p{color:var(--ink-dim);font-size:14.5px;margin:0 0 16px}
.testi-card__name{font-weight:700;font-size:14px}
.testi-card__role{font-size:12.5px;color:var(--ink-dim)}

.footer{background:var(--blue-deep);color:#c3caea;padding:44px 0 30px;font-size:13.5px}
.footer .brand__name{color:#fff;font-size:16px}
.footer a{color:var(--orange)}
.site-footer__grid{display:grid;grid-template-columns:2fr 2fr 1fr;gap:24px;text-align:start}
.site-footer__grid p{margin:0 0 8px}
@media (max-width:768px){.site-footer__grid{grid-template-columns:1fr;text-align:center}}

.login-success{text-align:center}
.login-success h3{color:var(--blue);margin-block-start:0}
.login-success__stats{display:flex;justify-content:space-between;gap:12px;margin-block-start:20px;padding-block-start:18px;border-block-start:1px solid var(--border)}
.login-success__stats div{flex:1}
.login-success__stats strong{display:block;font-size:20px;color:var(--blue);font-family:'Cairo',sans-serif}
.login-success__stats span{font-size:11.5px;color:var(--ink-dim)}

.back-pill{position:fixed;inset-block-start:16px;inset-inline-start:16px;z-index:95;background:rgba(30,58,138,.92);color:#fff;padding:8px 16px;border-radius:999px;font-size:13px;border:1px solid var(--orange)}
.wa-fab{position:fixed;inset-block-end:24px;inset-inline-end:24px;z-index:95;width:54px;height:54px;border-radius:50%;background:var(--blue);display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(0,0,0,.3);color:#fff}

@media (max-width:1024px){.courses-grid,.testi-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:768px){
  .nav__links{display:none}
  .nav__toggle{display:block}
  .courses-grid,.testi-grid{grid-template-columns:1fr}
  .countdown{flex-wrap:wrap}
}