/* ===== Variables ===== */
:root {
  --color-bg: #f7f5f0;
  --color-bg-dark: #0f1f17;
  --color-surface: #ffffff;
  --color-primary: #1b4332;
  --color-primary-light: #2d6a4f;
  --color-accent: #d4a853;
  --color-accent-soft: rgba(212, 168, 83, 0.15);
  --color-text: #1a1a1a;
  --color-text-muted: #5c5c5c;
  --color-border: rgba(27, 67, 50, 0.12);
  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(15, 31, 23, 0.08);
  --shadow-lg: 0 20px 60px rgba(15, 31, 23, 0.15);
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-primary);
}

.container {
  width: min(1140px, 92vw);
  margin-inline: auto;
}

/* Grain overlay */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  transition: background var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}

.header.scrolled {
  background: rgba(247, 245, 240, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 700;
  font-size: 1.05rem;
  color: #fff;
  transition: color var(--transition);
}

.header.scrolled .nav__logo {
  color: var(--color-primary);
}

.header:not(.scrolled) .nav__logo:hover {
  color: rgba(255, 255, 255, 0.85);
}

.nav__logo img {
  width: 40px;
  height: auto;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav__link {
  display: block;
  padding: 0.5rem 1rem;
  font-weight: 500;
  font-size: 0.925rem;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background var(--transition), color var(--transition);
}

.header:not(.scrolled) .nav__link:not(.nav__link--cta) {
  color: rgba(255, 255, 255, 0.92);
}

.header:not(.scrolled) .nav__link:not(.nav__link--cta):hover,
.header:not(.scrolled) .nav__link:not(.nav__link--cta).active {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-primary);
  background: var(--color-accent-soft);
}

.nav__link--cta {
  background: var(--color-primary);
  color: #fff !important;
  margin-left: 0.5rem;
}

.nav__link--cta:hover {
  background: var(--color-primary-light);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 100px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s, background var(--transition), border-color var(--transition), color var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg-dark);
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background: #e0b96a;
  color: var(--color-bg-dark);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(8px);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
}

.hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05);
  animation: heroZoom 20s ease-in-out infinite alternate;
}

@keyframes heroZoom {
  from { transform: scale(1.05); }
  to { transform: scale(1.12); }
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(15, 31, 23, 0.88) 0%,
    rgba(27, 67, 50, 0.75) 50%,
    rgba(15, 31, 23, 0.6) 100%
  );
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: calc(var(--header-h) + 3rem) 0 4rem;
  display: grid;
  gap: 3rem;
}

.hero__eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.hero__title {
  font-family: var(--font-sans);
  font-size: clamp(2.5rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.15;
  color: #fff;
  max-width: 18ch;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.hero__title em {
  font-style: normal;
  color: var(--color-accent);
}

.hero__desc {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.82);
  max-width: 52ch;
  margin-bottom: 2rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.stat {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.3rem 0.45rem;
  padding: 0.9rem 1.2rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.stat__text {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.78);
  line-height: 1.35;
}

.stat__num {
  font-family: var(--font-serif);
  font-size: 2.1rem;
  line-height: 1;
  color: #fff;
  white-space: nowrap;
}

.stat__suffix {
  font-family: var(--font-serif);
  font-size: 2.1rem;
  color: var(--color-accent);
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  width: 28px;
  height: 44px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-radius: 14px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
  animation: scrollBounce 2s ease-in-out infinite;
}

.hero__scroll span {
  width: 4px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 2px;
  animation: scrollDot 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

@keyframes scrollDot {
  0%, 100% { opacity: 1; transform: translateY(0); }
  50% { opacity: 0.3; transform: translateY(6px); }
}

/* ===== Sections ===== */
.section {
  padding: 6rem 0;
}

.section__tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary-light);
  margin-bottom: 0.75rem;
}

.section__title {
  font-family: var(--font-sans);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.section__header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3.5rem;
}

/* ===== About ===== */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

.about__visual {
  position: relative;
}

.about__img-wrap {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 3rem;
  box-shadow: var(--shadow);
  display: flex;
  justify-content: center;
  transition: transform var(--transition);
}

.about__img-wrap:hover {
  transform: translateY(-4px);
}

.about__img-wrap img {
  max-width: 220px;
}

.about__badge {
  position: absolute;
  bottom: -1rem;
  right: -1rem;
  background: var(--color-primary);
  color: #fff;
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-lg);
}

.about__badge-icon {
  width: 22px;
  height: 22px;
  background: var(--color-accent);
  color: var(--color-bg-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
}

.about__content p {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.about__content p:last-child {
  margin-bottom: 0;
}

/* ===== BOZP ===== */
.bozp {
  background: var(--color-surface);
}

.bozp__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: start;
  margin-bottom: 3.5rem;
}

.bozp__content p {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.bozp__cert {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: rotate(2deg);
  transition: transform var(--transition);
  cursor: zoom-in;
}

.bozp__cert:hover {
  transform: rotate(0deg) scale(1.02);
}

.bozp__cert img {
  width: 100%;
}

.bozp__services-title {
  font-family: var(--font-sans);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: 2rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.service-card__icon {
  width: 44px;
  height: 44px;
  background: var(--color-accent-soft);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

.service-card__icon svg {
  width: 22px;
  height: 22px;
}

.service-card h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.service-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

.bozp__note {
  text-align: center;
  margin-top: 2.5rem;
  padding: 1.25rem 2rem;
  background: var(--color-accent-soft);
  border-radius: var(--radius-sm);
  font-size: 0.925rem;
  color: var(--color-text-muted);
}

/* ===== Courses ===== */
.courses__intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-bottom: 3.5rem;
}

.courses__intro-text p {
  color: var(--color-text-muted);
}

.courses__intro-img {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.courses__intro-img img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.courses__intro-img:hover img {
  transform: scale(1.05);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.course-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.course-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary-light), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.course-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.course-card:hover::before {
  transform: scaleX(1);
}

.course-card__header {
  margin-bottom: 0.85rem;
}

.course-card__hours {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: var(--color-accent-soft);
  color: var(--color-primary);
  padding: 0.25rem 0.65rem;
  border-radius: 100px;
  margin-bottom: 0.65rem;
}

.course-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1.35;
}

.course-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin-bottom: 1rem;
}

.course-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.course-card__meta span {
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--color-bg);
  color: var(--color-text-muted);
  padding: 0.25rem 0.6rem;
  border-radius: 6px;
}

.course-card__cert {
  margin-top: 1rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  cursor: zoom-in;
  transition: box-shadow var(--transition), transform var(--transition);
}

.course-card__cert:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.course-card__cert img {
  width: 100%;
  display: block;
}

.courses__note {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-top: 2.5rem;
  padding: 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  border-left: 4px solid var(--color-accent);
}

.courses__note-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  background: var(--color-accent-soft);
  color: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.courses__note p {
  font-size: 0.925rem;
  color: var(--color-text-muted);
}

/* ===== Gallery marquee ===== */
.gallery {
  overflow: hidden;
  padding: 2rem 0;
  background: var(--color-bg-dark);
}

.gallery__track {
  display: flex;
  gap: 1rem;
  width: max-content;
  animation: marquee 40s linear infinite;
}

.gallery__track img {
  width: 320px;
  height: 220px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  opacity: 0.85;
  transition: opacity var(--transition);
}

.gallery__track img:hover {
  opacity: 1;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ===== Contact ===== */
.contact {
  background: var(--color-surface);
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.contact__visual {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.contact__visual img {
  width: 100%;
  height: 100%;
  min-height: 400px;
  object-fit: cover;
}

.contact__list {
  list-style: none;
  margin: 2rem 0;
}

.contact__list li {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--color-border);
}

.contact__list li:last-child {
  border-bottom: none;
}

.contact__label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.2rem;
}

.contact__list a {
  font-weight: 500;
}

.contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ===== Footer ===== */
.footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.6);
  padding: 2rem 0;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.footer__tagline {
  color: var(--color-accent);
  font-family: var(--font-sans);
  font-weight: 500;
}

/* ===== Lightbox ===== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.lightbox:not([hidden]) {
  display: flex;
}

.lightbox--open {
  opacity: 1;
  visibility: visible;
}

.lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 31, 23, 0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  cursor: zoom-out;
}

.lightbox__content {
  position: relative;
  z-index: 1;
  margin: 0;
  max-width: min(92vw, 820px);
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  animation: lightboxIn 0.3s ease;
}

@keyframes lightboxIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.lightbox__img {
  max-width: 100%;
  max-height: calc(92vh - 2.5rem);
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  background: #fff;
}

.lightbox__caption {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.75);
  text-align: center;
}

.lightbox__close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 2;
  width: 44px;
  height: 44px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
  transition: background var(--transition);
}

.lightbox__close:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* ===== Scroll reveal ===== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal--delay { transition-delay: 0.12s; }
.reveal--delay-2 { transition-delay: 0.24s; }
.reveal--delay-3 { transition-delay: 0.36s; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .courses-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about__grid,
  .bozp__grid,
  .courses__intro,
  .contact__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .bozp__cert {
    max-width: 400px;
    margin: 0 auto;
    transform: none;
  }

  .about__badge {
    right: 1rem;
    bottom: -0.5rem;
  }
}

@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: rgba(247, 245, 240, 0.97);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: 1.5rem;
    gap: 0.25rem;
    transform: translateY(-120%);
    opacity: 0;
    transition: transform var(--transition), opacity var(--transition);
    box-shadow: var(--shadow);
  }

  .nav__menu.open {
    transform: translateY(0);
    opacity: 1;
  }

  .nav__link--cta {
    margin-left: 0;
    text-align: center;
  }

  .hero__stats {
    gap: 0.65rem;
  }

  .stat {
    flex: 1 1 100%;
  }

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

  .section {
    padding: 4rem 0;
  }

  .hero__scroll {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .hero__bg-img {
    animation: none;
  }

  .gallery__track {
    animation: none;
  }
}