/* ================================================================
   TECH SIMPLIFIED — style.css
   Premium Dark Tech Education Website
   Clean, responsive, production-ready
   ================================================================ */

:root {
  --bg-base: #0d0e10;
  --bg-surface: #141518;
  --bg-surface-2: #1a1c1f;
  --bg-stats: #111214;
  --bg-mentorship: #12141a;
  --bg-footer: #0a0b0d;

  --gold: #F5A623;
  --gold-light: #FFB74D;
  --gold-dark: #D4841A;
  --red-yt: #FF0000;

  --text-primary: #FFFFFF;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  --text-dim: #374151;

  --border: rgba(255,255,255,.07);
  --border-hover: rgba(255,255,255,.14);

  --font-display: 'Manrope', sans-serif;
  --font-body: 'DM Sans', sans-serif;

  --container-max: 1180px;
  --section-pad: 80px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-2xl: 24px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --t-fast: 0.15s;
  --t-mid: 0.28s;
  --t-slow: 0.5s;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  background-color: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--t-fast);
}

img,
svg {
  display: block;
  max-width: 100%;
}

ul,
ol {
  list-style: none;
}

button {
  cursor: pointer;
  font: inherit;
  border: none;
  background: none;
}

input,
textarea,
select {
  font: inherit;
}

::selection {
  background: rgba(245,166,35,.25);
  color: var(--text-primary);
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,.12);
  border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255,255,255,.2);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(245,166,35,.08);
  border: 1px solid rgba(245,166,35,.2);
  color: var(--gold);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 34px;
  gap: 16px;
  flex-wrap: wrap;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.1rem);
  font-weight: 900;
  letter-spacing: -.03em;
  margin-bottom: 6px;
}

.section-sub {
  font-size: .95rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .88rem;
  line-height: 1;
  white-space: nowrap;
  transition: all var(--t-mid) var(--ease-out);
  position: relative;
  overflow: hidden;
}

.btn:focus-visible,
.nav__link:focus-visible,
.mobile-nav__link:focus-visible,
.footer__social:focus-visible,
.back-to-top:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: 2px solid rgba(245,166,35,.55);
  outline-offset: 2px;
}

.btn--gold {
  background: var(--gold);
  color: #000;
  border: 1.5px solid var(--gold);
}

.btn--gold:hover {
  background: var(--gold-light);
  border-color: var(--gold-light);
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(245,166,35,.28);
}

.btn--outline-white {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid rgba(255,255,255,.28);
}

.btn--outline-white:hover {
  border-color: rgba(255,255,255,.55);
  background: rgba(255,255,255,.06);
  transform: translateY(-1px);
}

.btn--outline-muted {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid rgba(255,255,255,.2);
  padding: 10px 18px;
  font-size: .84rem;
}

.btn--outline-muted:hover {
  border-color: rgba(255,255,255,.45);
  background: rgba(255,255,255,.05);
}

.btn--card-default {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid rgba(255,255,255,.22);
  padding: 10px 18px;
  font-size: .83rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  width: 100%;
  justify-content: center;
}

.btn--card-default:hover {
  background: rgba(255,255,255,.07);
  border-color: rgba(255,255,255,.4);
}

.btn--card-green {
  background: transparent;
  color: #4ADE80;
  border: 1.5px solid rgba(74,222,128,.35);
  padding: 10px 18px;
  font-size: .83rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  width: 100%;
  justify-content: center;
}

.btn--card-green:hover {
  background: rgba(74,222,128,.08);
  border-color: rgba(74,222,128,.6);
}

.btn--with-icon {
  padding: 12px 24px;
}

.btn--yt-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid rgba(255,255,255,.25);
  padding: 13px 28px;
}

.btn--yt-outline:hover {
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.45);
}

.btn--form-submit {
  width: 100%;
  justify-content: center;
  padding: 13px;
  font-size: .9rem;
}

.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  background: rgba(13,14,16,.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background var(--t-mid), box-shadow var(--t-mid), transform .35s cubic-bezier(0.16,1,0.3,1);
}

.header.scrolled {
  background: rgba(13,14,16,.98);
  box-shadow: 0 1px 40px rgba(0,0,0,.55);
}

.header__inner {
  display: flex;
  align-items: center;
  height: 66px;
  gap: 40px;
}

.logo {
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  line-height: 1;
}

.logo__primary {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.18rem;
  color: var(--text-primary);
  letter-spacing: -.01em;
}

.logo__accent {
  color: var(--gold);
}

.logo__sub {
  font-family: var(--font-body);
  font-size: .62rem;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--text-muted);
  margin-top: 3px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav__link {
  padding: 7px 14px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--t-fast), background var(--t-fast);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--gold);
  border-radius: 1px;
  transition: width var(--t-mid) var(--ease-out);
}

.nav__link:hover,
.nav__link--active {
  color: var(--text-primary);
}

.nav__link--active::after {
  width: 24px;
}

.nav__link:hover::after {
  width: 20px;
}

.header__cta {
  margin-left: 16px;
  padding: 10px 20px;
  font-size: .86rem;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  margin-left: 8px;
}

.hamburger__bar {
  display: block;
  width: 22px;
  height: 1.8px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--t-mid) var(--ease-out);
}

.hamburger.open .hamburger__bar:nth-child(1) {
  transform: rotate(45deg) translate(4.5px, 4.5px);
}

.hamburger.open .hamburger__bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.open .hamburger__bar:nth-child(3) {
  transform: rotate(-45deg) translate(4.5px, -4.5px);
}

.mobile-nav {
  position: fixed;
  top: 66px;
  left: 0;
  right: 0;
  z-index: 999;
  background: rgba(13,14,16,.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 20px 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transform: translateY(-110%);
  opacity: 0;
  transition: transform var(--t-mid) var(--ease-out), opacity var(--t-mid);
  pointer-events: none;
}

.mobile-nav.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: all;
}

.mobile-nav__link {
  padding: 13px 14px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--t-fast), background var(--t-fast);
}

.mobile-nav__link:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,.05);
}

.mobile-nav__cta {
  margin-top: 12px;
  width: 100%;
  justify-content: center;
}

.hero {
  position: relative;
  min-height: 100vh;
  padding-top: 66px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.hero__noise {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  opacity: .4;
}

.hero__gradient-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.hero__gradient-blob--1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(245,166,35,.06) 0%, transparent 70%);
  top: 10%;
  left: -100px;
}

.hero__gradient-blob--2 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(30,60,100,.15) 0%, transparent 70%);
  top: -20%;
  right: -50px;
}

.hero__layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  min-height: calc(100vh - 66px - 130px);
  padding-top: 60px;
  gap: 48px;
}

.hero__copy {
  opacity: 0;
  animation: fadeSlideUp .75s var(--ease-out) forwards;
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--gold);
  margin-bottom: 20px;
  text-transform: uppercase;
}

.hero__eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  flex-shrink: 0;
}

.hero__headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.8vw, 3.15rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.03em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.hero__headline--gold {
  color: var(--gold);
}

.hero__desc {
  font-size: .97rem;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 620px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero__btn-primary {
  padding: 13px 24px;
  font-size: .92rem;
}

.hero__btn-sec {
  padding: 12px 20px;
  font-size: .88rem;
}

.hero__visual {
  display: flex;
  justify-content: flex-end;
  align-items: stretch;
  height: 100%;
  opacity: 0;
  animation: fadeIn 1s var(--ease-out) .2s forwards;
}

.hero__photo-wrap {
  position: relative;
  width: 100%;
  max-width: 520px;
  min-height: 500px;
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
  overflow: hidden;
  background: #0f1216;
  box-shadow: 0 20px 60px rgba(0,0,0,.35);
}

.hero__photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.hero__hero-brand {
  position: absolute;
  left: 24px;
  bottom: 24px;
  padding: 14px 16px;
  background: rgba(0,0,0,.45);
  border: 1px solid rgba(255,255,255,.12);
  backdrop-filter: blur(8px);
  border-radius: 14px;
}

.hero__brand-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--text-primary);
}

.hero__brand-tag {
  margin-top: 4px;
  font-size: .68rem;
  letter-spacing: .14em;
  color: rgba(255,255,255,.68);
}

.stats-strip {
  position: relative;
  z-index: 2;
  background: var(--bg-stats);
  border-top: 1px solid var(--border);
}

.stats-strip__inner {
  display: flex;
  align-items: stretch;
  min-height: 110px;
}

.stat {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 22px 28px;
}

.stat__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.stat__icon--red {
  background: rgba(255,0,0,.12);
}

.stat__icon--gold {
  background: rgba(245,158,11,.12);
}

.stat__icon--green {
  background: rgba(16,185,129,.1);
}

.stat__icon--purple {
  background: rgba(167,139,250,.1);
}

.stat__body {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.stat__value {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1;
}

.stat__value--text {
  font-size: 1.2rem;
}

.stat__label {
  font-size: .78rem;
  color: var(--text-secondary);
}

.stat__divider {
  width: 1px;
  background: var(--border);
  margin: 20px 0;
}

.courses,
.mentorship,
.youtube {
  padding: var(--section-pad) 0;
  background: var(--bg-base);
  border-top: 1px solid var(--border);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.course-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--t-mid) var(--ease-out),
    border-color var(--t-mid),
    box-shadow var(--t-mid);
}

.course-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: 0 16px 48px rgba(0,0,0,.45);
}

.course-card__thumb {
  position: relative;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
}

.course-card__thumb--blue {
  background: #2b2357;
}

.course-card__thumb--teal {
  background: #0f3444;
}

.course-card__thumb--navy {
  background: #192340;
}

.course-card__thumb--green {
  background: #0d2b1e;
}

.thumb__pattern {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 18px 18px;
}

.thumb__illo {
  position: relative;
  z-index: 1;
  transition: transform var(--t-mid) var(--ease-out);
}

.course-card:hover .thumb__illo {
  transform: scale(1.06);
}

.tp-brand {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 10px;
}

.tp-brand__text {
  font-size: .92rem;
  font-weight: 600;
  color: rgba(255,255,255,.8);
  letter-spacing: .02em;
}

.course-card__body {
  padding: 20px 20px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.course-badge {
  display: inline-block;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 3px 0;
  border-bottom: 1.5px solid;
  width: fit-content;
}

.course-badge--udemy {
  color: #A78BFA;
  border-color: rgba(167,139,250,.4);
}

.course-badge--tp {
  color: #4ADE80;
  border-color: rgba(74,222,128,.4);
}

.course-card__title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-primary);
}

.course-card__desc {
  font-size: .84rem;
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
}

[data-aos] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s var(--ease-out), transform .6s var(--ease-out);
}

[data-aos].is-visible {
  opacity: 1;
  transform: translateY(0);
}

.mentorship__card {
  background: var(--bg-mentorship);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  overflow: hidden;
}

.mentorship__left {
  padding: 52px;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.mentorship__heading-row {
  display: flex;
  align-items: flex-start;
  gap: 22px;
}

.mentorship__icon-wrap {
  flex-shrink: 0;
  margin-top: 4px;
}

.mentorship__title {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 900;
  letter-spacing: -.03em;
  margin-bottom: 8px;
}

.mentorship__sub {
  font-size: .9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.mentorship__features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 24px;
}

.feat {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: .87rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.feat__check {
  color: var(--gold);
  font-weight: 800;
  flex-shrink: 0;
  margin-top: 1px;
}

.mentorship__right {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 52px 44px;
}

.mentorship__quote {
  text-align: center;
}

.quote__marks {
  font-size: 5rem;
  line-height: .8;
  color: var(--gold);
  font-family: Georgia, serif;
  margin-bottom: 20px;
  opacity: .9;
}

.quote__text {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -.02em;
  color: var(--text-primary);
  margin-bottom: 24px;
}

.quote__rule {
  width: 48px;
  height: 3px;
  background: var(--gold);
  border-radius: 2px;
  margin: 0 auto;
}

.youtube__card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 40px 52px;
  gap: 32px;
  flex-wrap: wrap;
}

.youtube__left {
  display: flex;
  align-items: center;
  gap: 28px;
  flex: 1;
}

.youtube__eyebrow {
  font-size: .7rem;
  font-weight: 800;
  letter-spacing: .14em;
  color: #FF0000;
  margin-bottom: 6px;
  text-transform: uppercase;
}

.youtube__title {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 900;
  letter-spacing: -.03em;
  margin-bottom: 8px;
}

.youtube__desc {
  font-size: .88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.footer {
  background: var(--bg-footer);
  border-top: 1px solid var(--border);
  padding: 64px 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.8fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--border);
}

.footer__brand-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.05rem;
  margin-bottom: 14px;
}

.footer__brand-desc {
  font-size: .84rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 22px;
}

.footer__socials {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.footer__social {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  background: rgba(255,255,255,.03);
  transition: all var(--t-mid);
}

.footer__social:hover {
  background: rgba(255,255,255,.08);
  border-color: rgba(255,255,255,.22);
  transform: translateY(-2px);
}

.footer__social span {
  color: var(--text-primary);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .04em;
}

.footer__col-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: .95rem;
  margin-bottom: 18px;
  color: var(--text-primary);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer__links li {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer__links a {
  font-size: .87rem;
  color: var(--text-secondary);
  padding: 6px 0;
  transition: color var(--t-fast), padding-left var(--t-fast);
  flex: 1;
}

.footer__links a:hover {
  color: var(--text-primary);
  padding-left: 4px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contact-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.contact-form__input {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  color: var(--text-primary);
  font-size: .87rem;
  outline: none;
  transition: border-color var(--t-fast), background var(--t-fast);
  width: 100%;
}

.contact-form__input::placeholder {
  color: var(--text-muted);
}

.contact-form__input:focus {
  border-color: rgba(245,166,35,.4);
  background: rgba(255,255,255,.06);
}

.contact-form__textarea {
  resize: vertical;
  min-height: 90px;
}

.contact-form__success {
  display: none;
  font-size: .83rem;
  color: #4ADE80;
  text-align: center;
  padding: 8px;
}

.contact-form__success.visible {
  display: block;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  flex-wrap: wrap;
  gap: 10px;
}

.footer__copy,
.footer__credit {
  font-size: .82rem;
  color: var(--text-muted);
}

.footer__heart {
  color: #EF4444;
}

.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 900;
  width: 42px;
  height: 42px;
  background: var(--bg-surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: all var(--t-mid) var(--ease-out);
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.back-to-top:hover {
  background: rgba(245,166,35,.12);
  border-color: rgba(245,166,35,.3);
  color: var(--gold);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2.5px;
  width: 0%;
  background: linear-gradient(90deg, var(--gold), var(--gold-light));
  z-index: 9999;
  transition: width .1s linear;
}

@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

#contact,
#courses,
#mentorship,
#youtube {
  scroll-margin-top: 90px;
}

@media (max-width: 1100px) {
  .courses-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer__col--brand {
    grid-column: span 2;
  }
}

@media (max-width: 900px) {
  :root {
    --section-pad: 60px;
  }

  .nav,
  .header__cta {
    display: none;
  }

  .hamburger {
    display: flex;
    margin-left: auto;
  }

  .hero__layout {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-top: 44px;
    min-height: auto;
    padding-bottom: 40px;
  }

  .hero__visual {
    justify-content: center;
    order: -1;
  }

  .hero__photo-wrap {
    max-width: 420px;
    min-height: 360px;
    margin: 0 auto;
    border-radius: var(--radius-2xl);
  }

  .stats-strip__inner {
    flex-wrap: wrap;
    min-height: auto;
  }

  .stat {
    flex: 1 1 calc(50% - 1px);
    min-width: 200px;
  }

  .mentorship__card {
    grid-template-columns: 1fr;
  }

  .mentorship__left {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 36px 32px;
  }

  .mentorship__right {
    padding: 36px 32px;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer__col--brand {
    grid-column: span 2;
  }
}

@media (max-width: 600px) {
  :root {
    --section-pad: 48px;
  }

  .container {
    padding: 0 18px;
  }

  .hero__headline {
    font-size: clamp(1.9rem, 7vw, 2.6rem);
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__btn-primary,
  .hero__btn-sec {
    width: 100%;
    justify-content: center;
  }

  .stats-strip__inner {
    flex-direction: column;
  }

  .stat {
    flex: 1 1 auto;
  }

  .stat__divider {
    width: auto;
    height: 1px;
    margin: 0;
  }

  .courses-grid {
    grid-template-columns: 1fr;
  }

  .mentorship__features {
    grid-template-columns: 1fr;
  }

  .mentorship__heading-row {
    flex-direction: column;
    gap: 14px;
  }

  .mentorship__left {
    padding: 28px 22px;
  }

  .mentorship__right {
    padding: 28px 22px;
  }

  .quote__text {
    font-size: 1.35rem;
  }

  .youtube__card {
    flex-direction: column;
    padding: 28px 22px;
  }

  .youtube__left {
    flex-direction: column;
    gap: 16px;
  }

  .footer__grid {
    grid-template-columns: 1fr;
  }

  .footer__col--brand {
    grid-column: span 1;
  }

  .contact-form__row {
    grid-template-columns: 1fr;
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 420px) {
  .logo__primary {
    font-size: 1.02rem;
  }

  .logo__sub {
    font-size: .56rem;
  }

  .hero__photo-wrap {
    min-height: 320px;
  }
}
.footer__links span:empty,
.footer__links div:empty {
  display: none !important;
}

.footer__social[href="#"] {
  display: none !important;
}