/* ===================================================================
   Flutter & AI course page — builds on app.css tokens and components.
   No WebGL here: the page stays light so it loads fast on mobile data.
   =================================================================== */

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 18px); }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

.course-page main { position: relative; z-index: 2; }

/* Static backdrop standing in for the home page's live stage. */
.c-bg {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(52% 42% at 82% 8%, rgba(232, 180, 92, .17), transparent 70%),
    radial-gradient(46% 40% at 6% 46%, rgba(143, 108, 255, .14), transparent 72%),
    radial-gradient(40% 34% at 70% 92%, rgba(63, 224, 208, .08), transparent 70%),
    var(--void);
}
.c-bg::after {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .028) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(70% 55% at 50% 20%, #000, transparent 75%);
  -webkit-mask-image: radial-gradient(70% 55% at 50% 20%, #000, transparent 75%);
}

.c-tight { padding: clamp(56px, 8vh, 96px) 0; }
.btn-sm { white-space: nowrap; }

/* ---------- Hero ---------- */
.c-hero { padding: calc(var(--header-h) + clamp(28px, 6vh, 64px)) 0 clamp(48px, 7vh, 80px); }
.c-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

.crumbs {
  display: flex; align-items: center; gap: 8px; margin-bottom: 22px;
  font-family: var(--font-mono); font-size: .64rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--text-3);
}
.crumbs a { color: var(--text-2); transition: color .3s; }
.crumbs a:hover { color: var(--gold); }
.crumbs i { font-size: .6rem; }

.c-title { margin-top: 22px; }
.c-lead { margin-top: 24px; max-width: 60ch; }
.c-urdu {
  margin-top: 14px; padding-left: 14px;
  border-left: 2px solid var(--gold);
  color: var(--text); font-size: .95rem; font-weight: 500;
}

.c-facts {
  margin-top: 28px;
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px;
  background: var(--line-soft); border: 1px solid var(--line-soft);
  border-radius: var(--r-sm); overflow: hidden;
}
.c-facts li { display: flex; gap: 12px; align-items: flex-start; padding: 16px; background: rgba(8, 8, 15, .62); }
.c-facts i { color: var(--gold); font-size: 1.05rem; margin-top: 2px; }
.c-facts b { display: block; font-family: var(--font-display); font-size: 1rem; letter-spacing: -.02em; }
.c-facts span { font-size: .74rem; color: var(--text-3); line-height: 1.4; }

/* Glance card */
.c-card { padding: 26px 26px 22px; border-radius: var(--r-lg); box-shadow: 0 30px 90px rgba(0, 0, 0, .35); }
.c-card-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.c-card-kicker { font-family: var(--font-mono); font-size: .6rem; letter-spacing: .2em; text-transform: uppercase; color: var(--text-3); }
.c-badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 11px; border-radius: 999px;
  border: 1px solid var(--line-hot); background: rgba(232, 180, 92, .08);
  font-family: var(--font-mono); font-size: .58rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--gold-hot);
}
.c-glance { margin-top: 20px; display: grid; gap: 0; }
.c-glance div {
  display: flex; justify-content: space-between; gap: 16px;
  padding: 12px 0; border-bottom: 1px solid var(--line-soft);
}
.c-glance dt { font-family: var(--font-mono); font-size: .6rem; letter-spacing: .16em; text-transform: uppercase; color: var(--text-3); padding-top: 3px; }
.c-glance dd { font-size: .86rem; text-align: right; color: var(--text); }
.c-card-btn { margin-top: 20px; width: 100%; justify-content: center; }
.c-card-who { margin-top: 18px; display: flex; align-items: center; gap: 12px; }
.c-card-who img { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; object-position: center 18%; }
.c-card-who strong { display: block; font-size: .88rem; }
.c-card-who span span { font-family: var(--font-mono); font-size: .6rem; letter-spacing: .08em; color: var(--text-3); }

/* ---------- Proof strip ---------- */
.c-proof {
  position: relative; z-index: 2;
  border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft);
  background: rgba(4, 4, 10, .45);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.c-proof-row { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.c-proof-row li { padding: 26px 20px; border-right: 1px solid var(--line-soft); }
.c-proof-row li:last-child { border-right: 0; }
.c-proof-row b {
  display: block; font-family: var(--font-display); font-weight: 800;
  font-size: clamp(1.6rem, 3vw, 2.3rem); letter-spacing: -.04em; line-height: 1;
  background: var(--grad-text); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.c-proof-row span { display: block; margin-top: 8px; font-size: .8rem; color: var(--text-2); }

/* ---------- Why ---------- */
.why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 16px; }
.why { padding: 28px 26px 30px; transition: transform .5s var(--ease); }
.why:hover { transform: translateY(-5px); }
.why .ico, .aud .h-card i {
  width: 46px; height: 46px; border-radius: 13px;
  display: grid; place-items: center; font-size: 1.2rem; color: var(--gold);
  background: linear-gradient(140deg, rgba(232, 180, 92, .16), rgba(143, 108, 255, .10));
  border: 1px solid rgba(232, 180, 92, .18);
}
.why h3 { margin-top: 20px; }
.why p { margin-top: 10px; font-size: .88rem; color: var(--text-2); }

/* ---------- Curriculum ---------- */
.cur-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.cur-note { max-width: 36ch; font-size: .9rem; }

.phases { display: flex; flex-direction: column; gap: 16px; }
.phase {
  display: grid; grid-template-columns: minmax(200px, 270px) minmax(0, 1fr); gap: 24px;
  padding: 24px; border: 1px solid var(--line-soft); border-radius: var(--r);
  background: rgba(8, 8, 15, .55);
}
.phase-head { display: flex; flex-direction: column; gap: 8px; padding-top: 6px; }
.phase-n { font-family: var(--font-mono); font-size: .62rem; letter-spacing: .22em; text-transform: uppercase; color: var(--gold); }
.phase-head h3 { font-size: clamp(1.35rem, 2.4vw, 1.75rem); }
.phase-weeks { font-family: var(--font-mono); font-size: .66rem; letter-spacing: .1em; color: var(--text-3); }

.mods { display: flex; flex-direction: column; gap: 10px; }
.mod { border: 1px solid var(--line); border-radius: var(--r-sm); background: rgba(255, 255, 255, .02); transition: border-color .35s, background-color .35s; }
.mod[open] { border-color: var(--line-hot); background: rgba(232, 180, 92, .035); }
.mod summary {
  display: flex; align-items: center; gap: 16px;
  padding: 16px 18px; cursor: pointer; list-style: none;
}
.mod summary::-webkit-details-marker, .faq summary::-webkit-details-marker { display: none; }
.mod .wk { flex: 0 0 64px; font-family: var(--font-mono); font-size: .62rem; letter-spacing: .14em; text-transform: uppercase; color: var(--gold); }
.mod .mt { flex: 1; font-weight: 600; font-size: .96rem; }
.mod summary i, .faq summary i { color: var(--text-3); transition: transform .35s var(--ease), color .35s; }
.mod[open] summary i, .faq details[open] summary i { transform: rotate(45deg); color: var(--gold); }
.mod-body { padding: 0 18px 18px 98px; }
.mod-body ul { display: grid; gap: 8px; }
.mod-body li { position: relative; padding-left: 18px; font-size: .88rem; color: var(--text-2); }
.mod-body li::before { content: ''; position: absolute; left: 0; top: .72em; width: 8px; height: 1px; background: var(--gold); }
.build {
  margin-top: 14px; display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 13px; border-radius: 999px;
  background: rgba(63, 224, 208, .07); border: 1px solid rgba(63, 224, 208, .22);
  font-size: .8rem; color: var(--text);
}
.build i { color: var(--cyan); }

/* ---------- Projects ---------- */
.proj-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; }
.proj { grid-column: span 2; padding: 26px 24px 24px; display: flex; flex-direction: column; transition: transform .5s var(--ease); }
.proj:hover { transform: translateY(-4px); }
.proj:nth-last-child(2) { grid-column: 2 / span 2; }
.proj:last-child { grid-column: 4 / span 2; }
.proj-n { font-family: var(--font-mono); font-size: .64rem; letter-spacing: .2em; text-transform: uppercase; color: var(--gold); }
.proj h3 { margin-top: 14px; font-size: 1.1rem; letter-spacing: -.02em; }
.proj p { margin-top: 10px; font-size: .86rem; color: var(--text-2); flex: 1; }
.proj-tags { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 6px; }
.proj-tags span {
  font-family: var(--font-mono); font-size: .58rem; letter-spacing: .1em; text-transform: uppercase;
  padding: 4px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--text-2);
}
.proj-capstone {
  grid-column: 1 / -1;
  padding: clamp(28px, 4vw, 44px);
  box-shadow: 0 30px 90px rgba(232, 180, 92, .08);
}
.proj-capstone::before {
  background: linear-gradient(150deg, var(--gold-hot), rgba(232, 180, 92, .25) 45%, rgba(63, 224, 208, .45));
  padding: 1.4px;
}
.proj-capstone .proj-n {
  align-self: flex-start; padding: 5px 12px; border-radius: 999px;
  background: linear-gradient(120deg, var(--gold-hot), var(--gold)); color: #17120a; font-weight: 700;
}
.proj-capstone {
  display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: clamp(24px, 4vw, 56px); align-items: center;
}
.cap-copy { display: flex; flex-direction: column; }
.proj-capstone h3 { font-size: clamp(1.4rem, 2.8vw, 2.1rem); max-width: 22ch; }
.proj-capstone p { font-size: .96rem; max-width: 56ch; flex: none; }
.cap-list {
  display: grid; gap: 1px; background: var(--line-soft);
  border: 1px solid var(--line-soft); border-radius: var(--r-sm); overflow: hidden;
}
.cap-list li { display: flex; gap: 12px; align-items: center; padding: 13px 16px; background: rgba(8, 8, 15, .7); font-size: .86rem; color: var(--text-2); }
.cap-list i { color: var(--gold); font-size: .95rem; }

/* ---------- Stack ---------- */
.tech { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; max-width: 980px; margin: 0 auto; }
.tech li {
  padding: 9px 16px; border-radius: 999px;
  border: 1px solid var(--line); background: rgba(255, 255, 255, .025);
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .06em; color: var(--text-2);
  transition: border-color .3s, color .3s, background-color .3s;
}
.tech li:hover { border-color: var(--line-hot); color: var(--gold-hot); background: rgba(232, 180, 92, .06); }

/* ---------- Audience ---------- */
.aud-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.aud { padding: 28px 28px 30px; }
.aud .h-card { display: flex; align-items: center; gap: 14px; }
.aud .h-card i { width: 40px; height: 40px; font-size: 1.05rem; flex-shrink: 0; }
.ticks { margin-top: 20px; display: grid; gap: 12px; }
.ticks li { position: relative; padding-left: 24px; font-size: .9rem; color: var(--text-2); }
.ticks li::before {
  content: ''; position: absolute; left: 2px; top: .38em;
  width: 10px; height: 6px;
  border-left: 1.6px solid var(--gold); border-bottom: 1.6px solid var(--gold);
  transform: rotate(-45deg);
}

.outcomes { margin-top: 16px; padding: 30px 28px; }
.outcomes ul { margin-top: 20px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px 24px; }
.outcomes li { display: flex; gap: 10px; font-size: .88rem; color: var(--text-2); }
.outcomes i { color: var(--cyan); margin-top: .15em; }

/* ---------- Format & enrol ---------- */
.fmt-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
.fmt-list { display: grid; gap: 1px; background: var(--line-soft); border: 1px solid var(--line-soft); border-radius: var(--r); overflow: hidden; }
.fmt { display: flex; gap: 18px; padding: 22px 24px; background: rgba(7, 7, 14, .66); transition: background-color .4s; }
.fmt:hover { background: rgba(232, 180, 92, .045); }
.fmt > i { color: var(--gold); font-size: 1.25rem; margin-top: 2px; }
.fmt h3 { font-size: 1.02rem; }
.fmt p { margin-top: 6px; font-size: .86rem; color: var(--text-2); }

.enroll {
  padding: clamp(28px, 4vw, 40px); border-radius: var(--r-lg);
  display: flex; flex-direction: column; gap: 12px;
  box-shadow: 0 30px 90px rgba(232, 180, 92, .10);
  scroll-margin-top: calc(var(--header-h) + 24px);
}
.enroll::before {
  background: linear-gradient(150deg, var(--gold-hot), rgba(232, 180, 92, .25) 45%, rgba(63, 224, 208, .45));
  padding: 1.4px;
}
.enroll .c-badge { align-self: flex-start; }
.enroll h3 { margin-top: 6px; font-size: clamp(1.6rem, 3vw, 2.1rem); }
.enroll > p { font-size: .9rem; color: var(--text-2); }
.enroll-points { margin: 6px 0 8px; display: grid; gap: 8px; }
.enroll-points li { display: flex; gap: 10px; font-size: .86rem; color: var(--text-2); }
.enroll-points i { color: var(--gold); }
.enroll .btn { justify-content: center; width: 100%; }
.enroll-tel { margin-top: 4px; text-align: center; font-family: var(--font-mono); font-size: .68rem; color: var(--text-3); }
.enroll-tel a { color: var(--gold); }

/* ---------- Instructor ---------- */
.ins-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.ins-photo { margin: 0; border-radius: var(--r-lg); aspect-ratio: 4 / 4.6; max-width: 460px; }
.ins-photo img { width: 100%; height: 100%; object-fit: cover; object-position: center 20%; filter: saturate(.92) contrast(1.05); }
.ins-points { margin-top: 24px; display: grid; gap: 12px; }
.ins-points li { display: flex; gap: 8px; font-size: .92rem; color: var(--text-2); }
.ins-points i { color: var(--gold); font-size: 1.2rem; line-height: 1.2; }
.ins-links { margin-top: 28px; display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }

/* ---------- FAQ ---------- */
.faq-wrap { max-width: 880px; }
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: 20px 4px; cursor: pointer; list-style: none;
  font-weight: 600; font-size: 1rem;
  transition: color .3s;
}
.faq summary:hover { color: var(--gold-hot); }
.faq details p { padding: 0 4px 22px; color: var(--text-2); font-size: .92rem; max-width: 68ch; }
.faq details a { color: var(--gold); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .c-hero-grid { grid-template-columns: 1fr; }
  .c-card { max-width: 560px; }
  .c-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .outcomes ul { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .phase { grid-template-columns: 1fr; gap: 16px; padding: 20px; }
  .phase-head { flex-direction: row; align-items: baseline; flex-wrap: wrap; gap: 6px 14px; padding-top: 0; }
  .proj-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .proj, .proj:nth-last-child(2) { grid-column: span 1; }
  .proj:last-child { grid-column: 1 / -1; }
  .proj-capstone { grid-template-columns: 1fr; }
  .aud-grid, .fmt-grid, .ins-grid { grid-template-columns: 1fr; }
  .c-proof-row { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .c-proof-row li:nth-child(2) { border-right: 0; }
  .c-proof-row li:nth-child(-n+2) { border-bottom: 1px solid var(--line-soft); }
}

@media (max-width: 560px) {
  .pill-sub { display: none; }
  .c-title { font-size: clamp(1.75rem, 8.4vw, 2.1rem); }
  .c-facts li { padding: 14px 12px; gap: 10px; }
  .outcomes ul { grid-template-columns: 1fr; }
  .proj-grid { grid-template-columns: 1fr; }
  .proj:last-child { grid-column: auto; }
  .mod summary { flex-wrap: wrap; gap: 6px 12px; padding: 14px 16px; }
  .mod .wk { flex-basis: auto; }
  .mod .mt { flex-basis: calc(100% - 40px); order: 3; }
  .mod summary i { margin-left: auto; }
  .mod-body { padding: 0 16px 16px; }
  .c-glance dd { font-size: .82rem; }
  .c-proof-row li { padding: 20px 14px; }
}