/* static/landings/studentu-shop/style.css */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:       #10b981;
  --primary-dark:  #059669;
  --primary-light: #d1fae5;
  --secondary:     #06b6d4;
  --accent:        #f59e0b;
  --accent-green:  #22c55e;
  --text:          #0f172a;
  --muted:         #64748b;
  --bg:            #f8fafc;
  --white:         #ffffff;
  --dark:          #0f172a;
  --radius:        16px;
  --shadow:        0 4px 30px rgba(16, 185, 129, 0.12);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

a { color: inherit; text-decoration: none; }

/* ─── HEADER ─── */
.header {
  background: var(--white);
  box-shadow: 0 2px 16px rgba(15,23,42,.08);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 3px solid transparent;
  border-image: linear-gradient(90deg, var(--primary), var(--secondary)) 1;
}
.header__inner {
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  display: flex;
  align-items: center;
  gap: .9rem;
  font-weight: 900;
  font-size: 1.4rem;
  color: var(--text);
  letter-spacing: -.03em;
}
.logo__icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
  font-weight: 900;
  flex-shrink: 0;
  box-shadow: 0 4px 18px rgba(16,185,129,.4);
}
.logo span {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

nav { display: flex; align-items: center; gap: .3rem; }
nav a {
  padding: .52rem 1.15rem;
  font-weight: 500;
  color: var(--muted);
  border-radius: 11px;
  transition: color .2s, background .2s;
  font-size: .93rem;
}
nav a:hover { color: var(--primary); background: var(--primary-light); }

.btn-nav {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%) !important;
  color: var(--white) !important;
  padding: .58rem 1.6rem !important;
  border-radius: 12px;
  font-weight: 700 !important;
  margin-left: .75rem;
  box-shadow: 0 4px 18px rgba(16,185,129,.42);
  transition: opacity .2s, transform .15s !important;
}
.btn-nav:hover { opacity: .92 !important; transform: translateY(-1px); }

/* ─── HERO ─── */
.hero {
  background: linear-gradient(160deg, #059669 0%, #047857 40%, #0891b2 100%);
  color: var(--white);
  padding: 7rem 1.5rem 6rem;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -150px; right: -150px;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6,182,212,.28) 0%, transparent 65%);
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -120px; left: -120px;
  width: 480px; height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(16,185,129,.25) 0%, transparent 65%);
  pointer-events: none;
}
.hero__inner {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  background: rgba(6,182,212,.2);
  border: 1px solid rgba(6,182,212,.5);
  color: #a5f3fc;
  font-size: .79rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  padding: .4rem 1.15rem;
  border-radius: 22px;
  margin-bottom: 1.7rem;
}
.hero h1 {
  font-size: clamp(2.1rem, 4.8vw, 3.5rem);
  font-weight: 900;
  line-height: 1.12;
  margin-bottom: 1.5rem;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, #a7f3d0, #67e8f9);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__subtitle {
  font-size: 1.15rem;
  color: rgba(255,255,255,.84);
  margin-bottom: 2.5rem;
  max-width: 540px;
  line-height: 1.8;
}
.hero__cta { display: flex; gap: 1.15rem; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: .95rem 2.4rem;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 1rem;
  transition: transform .15s, box-shadow .15s, background .2s;
  cursor: pointer;
  border: none;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #ea580c 100%);
  color: var(--white);
  box-shadow: 0 6px 26px rgba(245,158,11,.45);
}
.btn-primary:hover { box-shadow: 0 12px 38px rgba(245,158,11,.58); }
.btn-outline {
  border: 2px solid rgba(255,255,255,.58);
  color: var(--white);
  background: transparent;
  padding: .91rem 2.3rem;
}
.btn-outline:hover { border-color: rgba(255,255,255,.98); background: rgba(255,255,255,.12); }
.btn-white { background: var(--white); color: var(--primary); }
.btn-white:hover { background: var(--primary-light); }

.hero__visual { position: relative; }
.hero__img {
  width: 100%;
  max-width: 600px;
  border-radius: 24px;
  box-shadow: 0 30px 75px rgba(0,0,0,.6);
  display: block;
}

/* ─── STATS BAR ─── */
.stats {
  background: linear-gradient(90deg, var(--primary) 0%, #0d9488 50%, var(--secondary) 100%);
  color: var(--white);
  padding: 3rem 1.5rem;
}
.stats__grid {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.8rem;
  text-align: center;
}
.stat { position: relative; }
.stat + .stat::before {
  content: '';
  position: absolute;
  left: 0; top: 20%; bottom: 20%;
  width: 2px;
  background: rgba(255,255,255,.3);
}
.stat__number {
  font-size: 2.8rem;
  font-weight: 900;
  line-height: 1;
}
.stat__label { font-size: .88rem; opacity: .88; margin-top: .45rem; }

/* ─── INTRO SECTION ─── */
.intro { padding: 6.5rem 1.5rem; background: var(--white); }
.intro__inner { max-width: 1040px; margin: 0 auto; text-align: center; }
.intro h2 {
  font-size: clamp(1.8rem, 3.8vw, 2.6rem);
  font-weight: 900;
  margin-bottom: 1.2rem;
  color: var(--text);
}
.intro p {
  font-size: 1.08rem;
  color: var(--muted);
  line-height: 1.85;
  max-width: 880px;
  margin: 0 auto 1.5rem;
}
.intro__highlight {
  margin-top: 2.5rem;
  padding: 2.5rem;
  background: linear-gradient(135deg, var(--primary-light) 0%, #cffafe 100%);
  border-radius: 20px;
  border-left: 5px solid var(--primary);
}
.intro__highlight p {
  font-size: 1.12rem;
  color: var(--text);
  font-weight: 600;
  line-height: 1.9;
}

/* ─── SECTION HEADER ─── */
.section-header { text-align: center; margin-bottom: 3.8rem; }
.section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
  padding: .34rem 1.05rem;
  border-radius: 22px;
  margin-bottom: 1.05rem;
}
.section-title {
  font-size: clamp(1.75rem, 3.7vw, 2.7rem);
  font-weight: 900;
  color: var(--text);
  margin-bottom: .8rem;
}
.section-sub {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ─── SERVICES ─── */
.services { padding: 6.5rem 1.5rem; }
.services__grid {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.2rem;
}
.card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: var(--shadow);
  border-bottom: 4px solid transparent;
  transition: transform .2s, box-shadow .2s, border-color .2s;
}
.card:hover {
  transform: translateY(-7px);
  box-shadow: 0 18px 52px rgba(16,185,129,.22);
  border-bottom-color: var(--primary);
}
.card__icon {
  width: 60px; height: 60px;
  border-radius: 16px;
  background: var(--primary-light);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 1.4rem;
}
.card__icon img {
  width: 28px; height: 28px;
  filter: invert(48%) sepia(79%) saturate(2476%) hue-rotate(113deg) brightness(95%) contrast(87%);
}
.card h3 { font-size: 1.14rem; font-weight: 800; margin-bottom: .7rem; color: var(--text); }
.card p { color: var(--muted); font-size: .95rem; line-height: 1.8; margin-bottom: 1.2rem; }
.card__price {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 700;
  font-size: .9rem;
  padding: .4rem 1rem;
  border-radius: 11px;
}

/* ─── SUBJECTS ─── */
.subjects { background: var(--bg); padding: 6.5rem 1.5rem; }
.subjects__grid {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.3rem;
}
.subject-card {
  background: var(--white);
  border-radius: 14px;
  padding: 1.5rem 1.8rem;
  display: flex;
  align-items: center;
  gap: .95rem;
  box-shadow: 0 2px 16px rgba(15,23,42,.07);
  transition: transform .2s, box-shadow .2s, background .2s;
  border-left: 4px solid transparent;
}
.subject-card:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow);
  border-left-color: var(--primary);
  background: var(--primary-light);
}
.subject-card__icon {
  width: 12px; height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  flex-shrink: 0;
}
.subject-card span { font-size: .96rem; font-weight: 600; color: var(--text); }

/* ─── PROCESS ─── */
.process { padding: 6.5rem 1.5rem; background: var(--white); }
.process__grid {
  max-width: 1140px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}
.process-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 2.2rem;
  position: relative;
  transition: transform .2s, box-shadow .2s;
  border-top: 4px solid transparent;
  border-image: linear-gradient(90deg, var(--primary), var(--secondary)) 1;
}
.process-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}
.process-card__num {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  font-size: 1.3rem;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.3rem;
  box-shadow: 0 4px 16px rgba(16,185,129,.38);
}
.process-card h3 { font-size: 1.08rem; font-weight: 800; margin-bottom: .6rem; color: var(--text); }
.process-card p { font-size: .92rem; color: var(--muted); line-height: 1.75; }

/* ─── ADVANTAGES ─── */
.advantages { background: var(--dark); color: var(--white); padding: 6.5rem 1.5rem; }
.advantages .section-title { color: var(--white); }
.advantages .section-sub { color: rgba(255,255,255,.78); }
.advantages .section-tag { background: rgba(16,185,129,.24); color: #a7f3d0; }
.advantages__grid {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.8rem;
}
.advantage {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  transition: background .2s, transform .2s;
}
.advantage:hover { background: rgba(255,255,255,.14); transform: scale(1.04); }
.advantage__icon {
  width: 58px; height: 58px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.2rem;
  box-shadow: 0 4px 18px rgba(16,185,129,.4);
}
.advantage__icon img { width: 27px; height: 27px; filter: invert(1); }
.advantage h3 { font-size: 1.03rem; font-weight: 700; margin-bottom: .5rem; }
.advantage p { font-size: .88rem; color: rgba(255,255,255,.72); line-height: 1.7; }

/* ─── PRICING ─── */
.pricing { padding: 6.5rem 1.5rem; background: var(--bg); }
.pricing__table {
  max-width: 980px;
  margin: 0 auto;
  background: var(--white);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 10px 42px rgba(15,23,42,.1);
}
.pricing__row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 0;
  border-bottom: 1px solid #e2e8f0;
}
.pricing__row:last-child { border-bottom: none; }
.pricing__cell {
  padding: 1.8rem 2rem;
  font-size: .96rem;
}
.pricing__header {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white);
  font-weight: 700;
  font-size: 1.05rem;
}
.pricing__cell:nth-child(2),
.pricing__cell:nth-child(3) {
  text-align: center;
  font-weight: 600;
}
.pricing__highlight {
  background: var(--primary-light);
  font-weight: 700;
  color: var(--primary-dark);
}

/* ─── GUARANTEES ─── */
.guarantees { padding: 6.5rem 1.5rem; background: var(--white); }
.guarantees__list {
  max-width: 1040px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.guarantee-item {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1.5rem 2rem;
  background: var(--bg);
  border-radius: 16px;
  border-left: 5px solid var(--primary);
  transition: transform .15s, box-shadow .2s;
}
.guarantee-item:hover { transform: translateX(7px); box-shadow: var(--shadow); }
.guarantee-item__icon {
  flex-shrink: 0;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--accent-green);
  display: flex; align-items: center; justify-content: center;
}
.guarantee-item__icon svg { width: 20px; height: 20px; stroke: white; stroke-width: 3; }
.guarantee-item span { font-size: 1rem; font-weight: 600; color: var(--text); line-height: 1.7; }

/* ─── REVIEWS ─── */
.reviews { padding: 6.5rem 1.5rem; background: var(--bg); }
.reviews__grid {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.2rem;
}
.review {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2.4rem;
  box-shadow: var(--shadow);
  position: relative;
}
.review::before {
  content: '"';
  position: absolute;
  top: 1.2rem; left: 1.8rem;
  font-size: 5rem;
  font-family: Georgia, serif;
  color: var(--primary-light);
  line-height: 1;
}
.review__stars { font-size: 1.08rem; margin-bottom: .9rem; color: var(--accent); position: relative; }
.review__text {
  color: var(--muted);
  font-size: .96rem;
  margin-bottom: 1.5rem;
  line-height: 1.8;
  position: relative;
}
.review__author { display: flex; align-items: center; gap: 1rem; }
.review__avatar {
  width: 50px; height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}
.review__name { font-weight: 700; font-size: .95rem; color: var(--text); }
.review__role { font-size: .84rem; color: var(--muted); }

/* ─── FAQ ─── */
.faq { background: var(--white); padding: 6.5rem 1.5rem; }
.faq__list { max-width: 880px; margin: 0 auto; }
.faq__item {
  background: var(--bg);
  border-radius: var(--radius);
  margin-bottom: 1.1rem;
  box-shadow: 0 2px 16px rgba(15,23,42,.07);
  overflow: hidden;
  transition: box-shadow .2s;
}
.faq__item.is-open { box-shadow: 0 6px 28px rgba(16,185,129,.16); }
.faq__q {
  width: 100%;
  background: none;
  border: none;
  padding: 1.5rem 2rem;
  text-align: left;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.2rem;
}
.faq__q:hover { color: var(--primary); }
.faq__arrow {
  flex-shrink: 0;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex; align-items: center; justify-content: center;
  transition: transform .3s, background .2s;
}
.faq__item.is-open .faq__arrow { transform: rotate(180deg); background: var(--primary); }
.faq__item.is-open .faq__arrow svg { stroke: var(--white); }
.faq__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .25s;
  color: var(--muted);
  font-size: .96rem;
  line-height: 1.85;
  padding: 0 2rem;
}
.faq__item.is-open .faq__a { max-height: 350px; padding: 0 2rem 1.6rem; }

/* ─── CTA ─── */
.cta-section {
  background: linear-gradient(135deg, var(--dark) 0%, #047857 40%, #0891b2 100%);
  color: var(--white);
  padding: 6.5rem 1.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 800px; height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(16,185,129,.22) 0%, transparent 60%);
  pointer-events: none;
}
.cta-section h2 {
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 900;
  margin-bottom: 1.2rem;
  position: relative;
}
.cta-section p {
  font-size: 1.16rem;
  color: rgba(255,255,255,.87);
  margin-bottom: 2.6rem;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
}
.cta-section .hero__cta { justify-content: center; }

/* ─── SEO ─── */
.seo { padding: 5.5rem 1.5rem; background: var(--bg); }
.seo__inner { max-width: 980px; margin: 0 auto; }
.seo__inner h2 { font-size: 1.45rem; font-weight: 800; color: var(--text); margin-bottom: 1.3rem; }
.seo__body { position: relative; color: var(--muted); font-size: .97rem; line-height: 1.95; }
.seo__body p + p { margin-top: .95rem; }
.seo__clamp { max-height: 110px; overflow: hidden; transition: max-height .4s ease; }
.seo__clamp.is-open { max-height: 3200px; }
.seo__fade {
  position: absolute; bottom: 0; left: 0; right: 0; height: 80px;
  background: linear-gradient(to bottom, transparent, var(--bg));
  pointer-events: none; transition: opacity .3s;
}
.seo__clamp.is-open + .seo__fade { opacity: 0; }
.seo__toggle {
  margin-top: 1.3rem; background: none; border: none;
  color: var(--primary); font-weight: 700; font-size: .97rem;
  cursor: pointer; padding: 0; display: flex; align-items: center; gap: .5rem;
}
.seo__toggle:hover { text-decoration: underline; }
.seo__toggle svg { transition: transform .3s; }
.seo__toggle.is-open svg { transform: rotate(180deg); }

/* ─── FOOTER ─── */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,.54);
  padding: 3.5rem 1.5rem;
  text-align: center;
  font-size: .91rem;
  border-top: 4px solid transparent;
  border-image: linear-gradient(90deg, var(--primary), var(--secondary)) 1;
}
.footer__logo {
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--white);
  margin-bottom: .8rem;
}
.footer__logo span {
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer a { color: rgba(255,255,255,.64); text-decoration: underline; }
.footer a:hover { color: #a7f3d0; }

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; gap: 3rem; text-align: center; }
  .hero__subtitle { margin-left: auto; margin-right: auto; }
  .hero__cta { justify-content: center; }
  .stats__grid { grid-template-columns: repeat(2, 1fr); }
  .pricing__row { grid-template-columns: 1fr; }
  .pricing__cell { text-align: left !important; }
}
@media (max-width: 768px) {
  .header__inner nav { display: none; }
}
@media (max-width: 480px) {
  .hero { padding: 4rem 1rem 3.5rem; }
  .btn { width: 100%; text-align: center; }
  .hero__cta { flex-direction: column; align-items: stretch; max-width: 350px; margin: 0 auto; }
  .stats__grid { grid-template-columns: 1fr 1fr; gap: 1.2rem; }
  .stat__number { font-size: 2.3rem; }
  .cta-section .hero__cta { flex-direction: column; max-width: 350px; margin: 0 auto 0; }
}