:root{
  --bg: #0f2b31; /* deep teal from screenshot */
  --card: #112f35;
  --text: #e7f3f5;
  --muted: #c1d6da;
  --accent: #f2713f; /* orange */
  --accent-2: #ffb282;
  --ring: rgba(242, 113, 63, .25);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: 'Cairo', system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  color:var(--text);
  background: var(--bg);
  overflow-x:hidden;
}

.container{
  width: min(1300px, 92vw);
  margin-inline:auto;
}

.topbar{
  position:sticky; top:0; z-index:50;
  background: rgba(5,18,21,.7);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid #21515a;
}
.topbar .container{
  display:flex; align-items:center; justify-content:space-between;
  padding: .75rem 0;
}
.tabs{display:flex; gap:1rem}
.tab{
  display:inline-block;
  padding:.55rem 1.2rem;
  border-radius: 999px;
  background:#153941;
  color:var(--text);
  text-decoration:none;
  font-weight:700;
  border:2px solid #2b606a;
}
.tab.active{ background:#0d2a30; border-color:#5c94a0; box-shadow: inset 0 0 0 2px #0d2a30, 0 0 0 3px var(--ring);}
.brand-badge{
  display:inline-grid; place-items:center;
  width:40px; height:40px; border-radius:10px;
  background:#1b5aef; color:#fff; font-weight:800;
}

.hero{
  display:grid; grid-template-columns: 1.1fr 1fr; gap:2rem; align-items:center;
  padding: 3rem 0 2rem;
}
.hero-media img{ width:100%; height:auto; display:block; filter: drop-shadow(0 50px 60px rgba(0,0,0,.45)); }
.hero-copy h1{ font-size: clamp(28px, 4vw, 46px); margin:0 0 .75rem; line-height:1.15;}
.hero-copy p{ color:var(--muted); max-width: 46ch; }
.accent{ color: var(--accent); }
.btn-cta{
  display:inline-block; margin-top:1.25rem;
  padding:.95rem 2.2rem; border-radius: 999px;
  background: var(--accent);
  color:#fff; text-decoration:none; font-weight:800;
  box-shadow: 0 10px 40px rgba(242,113,63,.45);
  transition: transform .15s ease, box-shadow .2s ease;
}
.btn-cta:hover{ transform: translateY(-2px); box-shadow: 0 16px 50px rgba(242,113,63,.6); }

.about{
  display:grid; grid-template-columns: 1fr 1fr; gap:2rem; align-items:center;
  padding: 2rem 0 3rem;
  border-top: 2px solid #1f4b53;
}
.about-media img{ width: 90%; max-width:520px; display:block; margin-inline:auto; }
.about-copy h2{ font-size: clamp(24px, 3vw, 36px); margin:0 0 .5rem; }
.about-copy p{ color:var(--muted); max-width: 52ch; }

.how{
  padding: 2rem 0 3.5rem;
}
.how h2{ font-size: clamp(24px, 3vw, 34px); margin:0 0 .5rem; text-align:center; }
.how .underline{ display:block; margin: .25rem auto 1.5rem; width:min(640px, 80%); opacity:.75; }
.steps{
  counter-reset: s; max-width: 760px; margin: 0 auto; padding:0 1rem;
  display:grid; gap: .9rem;
}
.steps li{
  list-style:none; background: #0e252a; border:1px solid #24474f; border-radius:16px; padding: .9rem 1rem;
  position:relative;
}
.steps li::before{
  counter-increment: s; content: counter(s);
  position:absolute; inset-inline-start:-.6rem; inset-block-start:-.6rem;
  width: 32px; height: 32px; border-radius: 999px; background: var(--accent);
  color:#fff; display:grid; place-items:center; font-weight:800; box-shadow: 0 6px 18px rgba(242,113,63,.5);
}

.site-footer{
  background: #0b1e22; border-top:2px solid #1f4b53; margin-top:2rem;
}
.footer-grid{
  display:grid; grid-template-columns: repeat(3,1fr); gap:1rem;
  padding: 2rem 0;
}
.footer-col h4{ margin:0 0 .75rem; }
.footer-col ul{ margin:0; padding:0; list-style:none; display:grid; gap:.35rem; }
.footer-col a{ color:#d3e7ea; text-decoration:none; }
.footer-col a:hover{ text-decoration:underline; }
.copy{ text-align:center; color:#86a6ac; border-top:1px solid #18383f; padding: .9rem 0; font-size:.9rem; }

/* Background decoration positions */
.bg-glow{
  position:fixed; z-index:-2;
  width: 900px; opacity:.25;
  inset-inline-start: -200px; inset-block-start: -120px;
}
.bg-fingerprint{
  position:fixed; z-index:-2; width: 540px; opacity:.18;
  inset-inline-end: -100px; inset-block-start: 220px;
}
.bg-math{
  position:fixed; z-index:-2; width: 460px; opacity:.22;
  inset-inline-end: -60px; inset-block-end: 60px;
}

/* Responsive */
@media (max-width: 980px){
  .hero{ grid-template-columns: 1fr; }
  .hero-media{ order:2; }
  .hero-copy{ order:1; }
  .about{ grid-template-columns: 1fr; }
  .footer-grid{ grid-template-columns: 1fr; }
}

.tab {
  display:inline-block;
  padding:.55rem 1.2rem;
  border-radius: 999px;
  background:#153941;
  color:var(--text);
  text-decoration:none;
  font-weight:700;
  border:2px solid #2b606a;
  transition: background .2s ease, color .2s ease;
}

/* active tab */
.tab.active {
  background:#0d2a30;
  border-color:#5c94a0;
  box-shadow: inset 0 0 0 2px #0d2a30, 0 0 0 3px var(--ring);
}

/* hover effect with accent color */
.tab:hover,
.logout-btn:hover {
  background: var(--accent);
  color: #fff;
}

/* logout button reset */
.logout-btn {
  background:#153941;
  border:2px solid #2b606a;
  border-radius:999px;
  color:var(--text);
  font-weight:700;
  cursor:pointer;
  padding:.55rem 1.2rem;
}

/* ===== FAQ ===== */
.faq { padding-block: 3rem 4rem; }
.faq-head { text-align:center; margin-bottom: 1.25rem; }
.faq-title{
  margin:0; line-height:1.1; font-weight:800;
  font-size: clamp(28px, 4.8vw, 54px);
  color: var(--text, #e7f3f5);
}
.faq-underline{
  display:block; margin: .4rem auto 0; width: min(280px, 60%);
  opacity:.85; pointer-events:none;
}

.faq-grid{
  display:grid; grid-template-columns: 280px 1fr; gap: 2rem;
  align-items:start;
}
.faq-aside{
  min-height: 100%;
  background:
    radial-gradient(closest-side, rgba(242,113,63,.12), transparent 60%) no-repeat 30% 20% / 240px 240px;
  mask-image: linear-gradient(to bottom, #000, #0000 90%);
  border-radius: 16px;
}
.faq-aside img{ width:100%; height:auto; display:block; opacity:.9; }

.faq-list{ display:block; }

.faq-item{
  width:100%; text-align:right;
  display:flex; align-items:center; gap: .75rem;
  background: #eef3f5; /* بطاقة فاتحة فوق الخلفية الداكنة */
  color: #344a53;
  border: 2px dashed rgba(0,0,0,.15);
  border-radius: 16px;
  padding: 1rem 1.25rem;
  cursor:pointer;
  transition: background .2s ease, border-color .2s ease, transform .1s ease;
  margin-bottom: .75rem;
}
.faq-item:hover{ background:#f6fafb; border-color: rgba(0,0,0,.22); transform: translateY(-1px); }

.faq-item .sign{
  width: 28px; height: 28px; flex: 0 0 28px;
  display:grid; place-items:center;
  border-radius: 50%;
  background:#fff; color:#111; font-weight:900;
  border:1px solid rgba(0,0,0,.12);
}
.faq-item .q{ flex:1; display:flex; align-items:center; gap: .75rem; font-size: clamp(15px, 2.2vw, 20px); }
.faq-item .num{
  color:#6c7e86; font-weight:800; font-size:.95em;
}

.faq-item.is-open{
  background:#eef3f5;
  border-color: rgba(242,113,63,.45);
  box-shadow: 0 0 0 3px rgba(242,113,63,.12) inset;
}
.faq-item.is-open .sign{
  background: var(--accent, #f2713f);
  color:#fff; border-color: transparent;
}

.faq-answer{
  display:none;
  background: #ffffff;
  color:#3b4f57;
  border: 2px dashed rgba(0,0,0,.12);
  border-radius: 0 0 16px 16px;
  margin-top: -0.55rem;       /* تداخل خفيف مع الزر */
  margin-bottom: .9rem;
  padding: 1rem 1.25rem;
  line-height: 1.8;
}

/* Responsive */
@media (max-width: 980px){
  .faq-grid{ grid-template-columns: 1fr; }
  .faq-aside{ display:none; }
}

/* ====== HEADER LAYOUT ====== */

.topbar {
  position:sticky;
  top:0;
  z-index:100;
  background: rgba(5,18,21,.7);
  backdrop-filter: blur(8px);
  border-bottom: 2px solid #21515a;
}

.topbar-inner {
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:.75rem 0;
  position: relative; /* علشان المنيو الموبايل يكون absolute داخله */
}

/* logo */
.site-logo img {
  width:60px;
  height:auto;
  display:block;
}

/* desktop nav wrapper */
.main-nav {
  display:flex;
  align-items:center;
  gap:2rem;
  color:var(--text);
}

/* desktop links list */
.main-links {
  list-style:none;
  display:flex;
  gap:1rem;
  margin:0;
  padding:0;
}
.main-links a {
  color:var(--text);
  text-decoration:none;
  font-weight:600;
  font-size:.95rem;
}
.main-links a:hover {
  color: var(--accent);
}

/* auth buttons desktop */
.auth-area {
  display:flex;
  flex-wrap:nowrap;
  gap:.6rem;
}
.auth-area form {
  margin:0;
}

/* keep your tab style */
.tab {
  display:inline-block;
  padding:.55rem 1.2rem;
  border-radius: 999px;
  background:#153941;
  color:var(--text);
  text-decoration:none;
  font-weight:700;
  border:2px solid #2b606a;
  transition: background .2s ease, color .2s ease;
  font-size:.9rem;
  line-height:1.2;
}
.tab.active {
  background:#0d2a30;
  border-color:#5c94a0;
  box-shadow: inset 0 0 0 2px #0d2a30, 0 0 0 3px var(--ring);
}
.tab:hover,
.logout-btn:hover {
  background: var(--accent);
  color:#fff;
}
.logout-btn {
  background:#153941;
  border:2px solid #2b606a;
  border-radius:999px;
  color:var(--text);
  font-weight:700;
  cursor:pointer;
  padding:.55rem 1.2rem;
  font-size:.9rem;
  line-height:1.2;
}

/* ====== MOBILE PART ====== */

/* hamburger button */
.mobile-toggle {
  background:none;
  border:0;
  padding:.5rem;
  cursor:pointer;
  display:none; /* hidden on desktop */
  flex-direction:column;
  justify-content:space-between;
  width:32px;
  height:24px;
}
.mobile-toggle span {
  display:block;
  height:3px;
  border-radius:2px;
  background: var(--text);
  width:100%;
}

/* dropdown */
.mobile-menu {
  position:absolute;
  top:100%;
  inset-inline-end:0; /* افتح تحت على اليمين (rtl) */
  background:#0f2b31;
  border:2px solid #21515a;
  border-radius:16px;
  padding:1rem;
  min-width:220px;
  display:none;
  box-shadow:0 20px 40px rgba(0,0,0,.6);
}

/* mobile links list */
.mobile-links {
  list-style:none;
  margin:0 0 1rem 0;
  padding:0;
  display:grid;
  gap:.5rem;
}
.mobile-links a {
  color:var(--text);
  text-decoration:none;
  font-weight:600;
  font-size:1rem;
  display:block;
  padding:.5rem .75rem;
  border-radius:10px;
  background:#153941;
  border:1px solid #2b606a;
}
.mobile-links a:hover {
  background: var(--accent);
  color:#fff;
  border-color: var(--accent);
}

/* auth block in mobile menu */
.mobile-auth {
  display:grid;
  gap:.5rem;
}
.mobile-auth form {
  margin:0;
}
.mobile-auth .tab {
  width:100%;
  text-align:center;
  display:block;
}

/* ====== RESPONSIVE RULES ====== */
@media (max-width: 980px){
  /* hide desktop nav, show burger */
  .main-nav {
    display:none;
  }
  .mobile-toggle {
    display:flex;
  }

  /* align header: logo right, burger left */
  .topbar-inner {
    flex-direction:row;
    justify-content:space-between;
  }
}

/* helper class to open menu */
.mobile-menu.open {
  display:block;
}