/* ==========================================================================
   MAHARISHI ARVIND GROUP
   Premium One-Page Website — style.css
   ========================================================================== */

/* ---------------------------------------------------------------------- */
/* 1. ROOT VARIABLES                                                       */
/* ---------------------------------------------------------------------- */
:root {
  --color-primary: #0D2340;
  --color-secondary: #164A87;
  --color-accent: #D4AF37;
  --color-white: #FFFFFF;
  --color-bg: #F7F8FA;
  --color-dark-text: #1E293B;

  --color-primary-rgb: 13, 35, 64;
  --color-accent-rgb: 212, 175, 55;

  --font-heading: 'Playfair Display', serif;
  --font-body: 'Poppins', sans-serif;

  --container-width: 1240px;
  --section-padding: 130px;

  --transition-fast: 0.3s cubic-bezier(0.65, 0, 0.35, 1);
  --transition-slow: 0.7s cubic-bezier(0.65, 0, 0.35, 1);

  --shadow-soft: 0 20px 60px rgba(13, 35, 64, 0.08);
  --shadow-medium: 0 25px 70px rgba(13, 35, 64, 0.14);
  --shadow-gold: 0 15px 40px rgba(212, 175, 55, 0.25);
}

/* ---------------------------------------------------------------------- */
/* 2. RESET & BASE                                                         */
/* ---------------------------------------------------------------------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  font-size: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--color-dark-text);
  background-color: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { display: block; max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

::selection {
  background: var(--color-accent);
  color: var(--color-primary);
}

::-webkit-scrollbar { width: 9px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb {
  background: var(--color-secondary);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover { background: var(--color-primary); }

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 40px;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-primary);
  line-height: 1.2;
  font-weight: 700;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------------------------------------------------------------------- */
/* 3. SHARED ELEMENTS                                                      */
/* ---------------------------------------------------------------------- */
.eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: 14px;
}

.eyebrow-light { color: var(--color-accent); }

.section-title {
  font-size: clamp(2rem, 3.4vw, 2.9rem);
  margin-bottom: 22px;
}

.section-title-light { color: var(--color-white); }

.gold-line {
  display: block;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  margin-bottom: 30px;
  border-radius: 2px;
  animation: expandLine 1.4s cubic-bezier(0.65, 0, 0.35, 1) forwards;
  animation-delay: 0.3s;
}

.gold-line-center { margin-left: auto; margin-right: auto; }

@keyframes expandLine {
  to { width: 90px; }
}

.section-heading { text-align: center; margin-bottom: 70px; }
.section-heading .gold-line { margin-left: auto; margin-right: auto; }
.section-subtext {
  max-width: 560px;
  margin: 0 auto;
  color: #5B6B82;
  font-size: 1.02rem;
}

.glass {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

/* Buttons */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 34px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.4px;
  border-radius: 50px;
  overflow: hidden;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-primary);
  box-shadow: var(--shadow-gold);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 45px rgba(212, 175, 55, 0.4);
}

.btn-outline {
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  color: var(--color-white);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--color-white);
  transform: translateY(-3px);
}

.btn-card {
  padding: 12px 24px;
  font-size: 0.85rem;
  background: transparent;
  color: var(--color-secondary);
  border: 1.5px solid var(--color-secondary);
}
.btn-card:hover {
  background: var(--color-secondary);
  color: var(--color-white);
}

.ripple { position: relative; }
.ripple-effect {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  animation: rippleAnim 0.65s linear;
  background: rgba(255, 255, 255, 0.5);
  pointer-events: none;
}
@keyframes rippleAnim {
  to { transform: scale(3); opacity: 0; }
}

/* ---------------------------------------------------------------------- */
/* 4. PREMIUM LOADER                                                       */
/* ---------------------------------------------------------------------- */
.loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s ease, visibility 0.8s ease;
}

.loader.loaded {
  opacity: 0;
  visibility: hidden;
}

.loader-inner {
  text-align: center;
}

.loader-logo-chip {
  display: inline-flex;
  width: auto;
  margin-bottom: 26px;
  animation: pulseMonogram 1.6s ease-in-out infinite;
}

.loader-logo {
  display: block;
  height: 52px;
  width: auto;
}

@keyframes pulseMonogram {
  0%, 100% { opacity: 0.55; transform: scale(0.96); }
  50% { opacity: 1; transform: scale(1.02); }
}

.loader-bar {
  width: 200px;
  height: 3px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 5px;
  overflow: hidden;
  margin: 0 auto;
}

.loader-bar-fill {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent), var(--color-secondary));
  animation: loaderFill 1.6s ease forwards;
}

@keyframes loaderFill {
  to { width: 100%; }
}

/* ---------------------------------------------------------------------- */
/* 5. NAVBAR                                                               */
/* ---------------------------------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 26px 0;
  background: transparent;
  transition: var(--transition-fast);
}

.navbar.scrolled {
  padding: 14px 0;
  background: rgba(13, 35, 64, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.18);
}

.navbar-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-logo {
  display: flex;
  align-items: center;
  width: 20%;
  min-width: 130px;
  max-width: 243px;
  flex-shrink: 0;
}

.logo-chip {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  background: rgba(255, 255, 255, 0.96);
  padding: 8px 16px;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  transition: var(--transition-fast);
}

.navbar-logo img {
  width: 100%;
  height: auto;
  object-fit: contain;
  display: block;
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 42px;
}

.nav-link {
  position: relative;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-white);
  padding: 6px 0;
  transition: var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-accent);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 30px;
  z-index: 1100;
}

.navbar-toggle span {
  height: 2px;
  width: 100%;
  background: var(--color-white);
  border-radius: 2px;
  transition: var(--transition-fast);
}

.navbar-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar-toggle.active span:nth-child(2) { opacity: 0; }
.navbar-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------------------------------------------------------------------- */
/* 6. HERO                                                                 */
/* ---------------------------------------------------------------------- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 640px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  color: var(--color-white);
  text-align: center;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.15);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(13,35,64,0.75) 0%, rgba(13,35,64,0.55) 45%, rgba(13,35,64,0.92) 100%);
}

.hero-floating {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(212, 175, 55, 0.35);
  z-index: -1;
  pointer-events: none;
}

.hero-floating-1 {
  width: 260px;
  height: 260px;
  top: 12%;
  left: 6%;
  animation: floatY 7s ease-in-out infinite;
}

.hero-floating-2 {
  width: 160px;
  height: 160px;
  bottom: 14%;
  right: 8%;
  animation: floatY 9s ease-in-out infinite reverse;
}

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-30px); }
}

.hero-content {
  max-width: 900px;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 24px;
  border-radius: 50px;
  background: rgba(212, 175, 55, 0.15);
  border: 1px solid rgba(212, 175, 55, 0.45);
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 30px;
  opacity: 0;
}

.hero-title {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 26px;
}

.hero-title .line {
  display: block;
  font-size: clamp(2rem, 5.2vw, 4.4rem);
  overflow: hidden;
}

.hero-subtitle {
  font-family: var(--font-body);
  font-size: clamp(1rem, 1.6vw, 1.3rem);
  font-weight: 300;
  letter-spacing: 0.6px;
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 44px;
  opacity: 0;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  opacity: 0;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.72rem;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.mouse {
  width: 26px;
  height: 42px;
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: 20px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.wheel {
  width: 4px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 3px;
  animation: scrollWheel 1.8s ease infinite;
}

@keyframes scrollWheel {
  0% { transform: translateY(0); opacity: 1; }
  70% { transform: translateY(12px); opacity: 0; }
  100% { transform: translateY(0); opacity: 0; }
}

/* ---------------------------------------------------------------------- */
/* 7. ABOUT SECTION                                                        */
/* ---------------------------------------------------------------------- */
.about {
  padding: var(--section-padding) 0;
  background: var(--color-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 90px;
  align-items: center;
}

.about-image { position: relative; }

.about-image-frame {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-medium);
  aspect-ratio: 4 / 5;
}

.about-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s cubic-bezier(0.65, 0, 0.35, 1);
}

.about-image-frame:hover img { transform: scale(1.08); }

.about-image-badge {
  position: absolute;
  bottom: -30px;
  right: -20px;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 24px 30px;
  border-radius: 14px;
  text-align: center;
  box-shadow: var(--shadow-gold);
}

.badge-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-accent);
}

.badge-label {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  margin-top: 4px;
}

.lead-text {
  font-size: 1.08rem;
  font-weight: 400;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.about-content p { color: #4A5A70; margin-bottom: 20px; }

.about-pillars {
  margin-top: 34px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.about-pillars li {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.about-pillars i {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(22, 74, 135, 0.08);
  color: var(--color-secondary);
  font-size: 1.15rem;
  transition: var(--transition-fast);
}

.about-pillars li:hover i {
  background: var(--color-accent);
  color: var(--color-white);
  transform: rotate(-8deg) scale(1.05);
}

.about-pillars h3 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.about-pillars p {
  font-size: 0.92rem;
  color: #64748B;
  margin-bottom: 0;
}

/* ---------------------------------------------------------------------- */
/* 8. CHAIRMAN SECTION                                                     */
/* ---------------------------------------------------------------------- */
.chairman {
  position: relative;
  padding: var(--section-padding) 0;
  background: linear-gradient(160deg, var(--color-primary) 0%, #0A1A30 100%);
  color: var(--color-white);
  overflow: hidden;
}

.chairman::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -120px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(212,175,55,0.14), transparent 70%);
  border-radius: 50%;
}

.chairman-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 90px;
  align-items: center;
}

.chairman-quote-card {
  border-radius: 18px;
  padding: 36px 38px;
  margin-bottom: 30px;
  position: relative;
}

.quote-icon {
  color: var(--color-accent);
  font-size: 1.6rem;
  opacity: 0.7;
  margin-bottom: 14px;
}

.chairman-quote {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: clamp(1.15rem, 1.8vw, 1.5rem);
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-white);
}

.chairman-text {
  color: rgba(255, 255, 255, 0.78);
  font-size: 1rem;
  margin-bottom: 34px;
}

.chairman-signature {
  display: flex;
  flex-direction: column;
  border-left: 3px solid var(--color-accent);
  padding-left: 20px;
}

.signature-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent);
}

.signature-role {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.65);
  margin-top: 4px;
}

.chairman-image-frame {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  aspect-ratio: 4 / 5;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(212, 175, 55, 0.25);
}

.chairman-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s cubic-bezier(0.65, 0, 0.35, 1);
}

.chairman-image-frame:hover img { transform: scale(1.06); }

/* ---------------------------------------------------------------------- */
/* 9. LEGACY SECTION                                                       */
/* ---------------------------------------------------------------------- */
.legacy {
  position: relative;
  padding: var(--section-padding) 0;
  background: var(--color-primary);
  color: var(--color-white);
  text-align: center;
  overflow: hidden;
}

.legacy-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 900px;
  height: 900px;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, rgba(212,175,55,0.08), transparent 65%);
  pointer-events: none;
}

.legacy-heading { position: relative; margin-bottom: 70px; }

.legacy-number {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(4rem, 10vw, 8rem);
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  letter-spacing: 2px;
}

.legacy-subtitle {
  color: var(--color-white);
  font-size: clamp(1.1rem, 2vw, 1.6rem);
  font-weight: 500;
  margin-top: 10px;
}

.legacy-counters {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.counter-card {
  padding: 44px 20px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition-fast);
}

.counter-card:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(212, 175, 55, 0.4);
}

.counter-card i {
  font-size: 1.7rem;
  color: var(--color-accent);
  margin-bottom: 18px;
}

.counter {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.2vw, 2.6rem);
  font-weight: 700;
  color: var(--color-white);
}

.counter-suffix {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.2vw, 2.6rem);
  font-weight: 700;
  color: var(--color-accent);
}

.counter-card p {
  margin-top: 8px;
  font-size: 0.85rem;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
}

/* ---------------------------------------------------------------------- */
/* 10. INSTITUTIONS SECTION                                                */
/* ---------------------------------------------------------------------- */
.institutions {
  padding: var(--section-padding) 0;
  background: var(--color-bg);
}

.institutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.institution-card {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid rgba(13, 35, 64, 0.06);
  box-shadow: var(--shadow-soft);
  transition: var(--transition-fast);
}

.institution-card:hover {
  transform: translateY(-12px);
  box-shadow: var(--shadow-medium);
}

.institution-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 11;
}

.institution-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.9s cubic-bezier(0.65, 0, 0.35, 1);
}

.institution-card:hover .institution-thumb img {
  transform: scale(1.12);
}

.institution-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(13,35,64,0.5) 100%);
  opacity: 0;
  transition: var(--transition-fast);
}

.institution-card:hover .institution-thumb::after { opacity: 1; }

.institution-body {
  padding: 30px 28px 34px;
}

.institution-body h3 {
  font-size: 1.18rem;
  margin-bottom: 10px;
  line-height: 1.35;
}

.institution-body p {
  font-size: 0.9rem;
  color: #64748B;
  margin-bottom: 22px;
  min-height: 62px;
}

/* ---------------------------------------------------------------------- */
/* 11. FOOTER                                                              */
/* ---------------------------------------------------------------------- */
.footer {
  background: #081729;
  color: rgba(255, 255, 255, 0.75);
  padding: 90px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1.2fr;
  gap: 50px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  margin-bottom: 22px;
}

.footer-logo .logo-chip {
  width: auto;
}

.footer-logo img {
  height: 42px;
  width: auto;
  display: block;
}

.footer-brand p { font-size: 0.9rem; margin-bottom: 24px; max-width: 320px; }

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.footer-social a:hover {
  background: var(--color-accent);
  color: var(--color-primary);
  border-color: var(--color-accent);
  transform: translateY(-4px);
}

.footer-links h4,
.footer-address h4 {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: 22px;
  font-family: var(--font-heading);
}

.footer-links a {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 14px;
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition-fast);
  width: fit-content;
}

.footer-links a:hover {
  color: var(--color-accent);
  padding-left: 6px;
}

.footer-address p {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.88rem;
  margin-bottom: 16px;
  line-height: 1.6;
}

.footer-address i {
  color: var(--color-accent);
  margin-top: 3px;
}

.footer-bottom {
  text-align: center;
  padding: 28px 0;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ---------------------------------------------------------------------- */
/* 12. BACK TO TOP                                                         */
/* ---------------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--color-accent);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: var(--shadow-gold);
  opacity: 0;
  visibility: hidden;
  transform: translateY(15px);
  transition: var(--transition-fast);
  z-index: 900;
}

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

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 45px rgba(212, 175, 55, 0.45);
}

/* ---------------------------------------------------------------------- */
/* 13. RESPONSIVE — LAPTOP / TABLET / MOBILE                              */
/* ---------------------------------------------------------------------- */
@media (max-width: 1200px) {
  :root { --section-padding: 100px; }
  .container { padding: 0 30px; }
  .about-grid,
  .chairman-grid { gap: 60px; }
  .institutions-grid { gap: 28px; }
}

@media (max-width: 1024px) {
  .navbar-links { gap: 28px; }
  .about-grid { grid-template-columns: 1fr; }
  .about-image { max-width: 460px; margin: 0 auto; }
  .chairman-grid { grid-template-columns: 1fr; }
  .chairman-image { order: -1; max-width: 420px; margin: 0 auto; }
  .institutions-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .legacy-counters { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --section-padding: 80px; }

  .navbar-logo {
    min-width: 100px;
    max-width: 140px;
  }

  .navbar-logo img {
    height: 32px;
  }

  .logo-chip {
    padding: 6px 12px;
  }

  .navbar-links {
    position: fixed;
    top: 0;
    right: -100%;
    height: 100vh;
    width: 78%;
    max-width: 320px;
    background: var(--color-primary);
    flex-direction: column;
    justify-content: center;
    gap: 36px;
    transition: right 0.5s cubic-bezier(0.65, 0, 0.35, 1);
    box-shadow: -20px 0 60px rgba(0,0,0,0.3);
  }

  .navbar-links.open { right: 0; }
  .navbar-toggle { display: flex; }

  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; justify-content: center; }

  .about-pillars li { align-items: center; }

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

  .footer-grid { grid-template-columns: 1fr; text-align: left; }
  .footer-brand p { max-width: 100%; }
}

@media (max-width: 560px) {
  .container { padding: 0 22px; }
  .legacy-counters { grid-template-columns: 1fr 1fr; gap: 16px; }
  .counter-card { padding: 30px 14px; }
  .about-image-badge { right: 0; padding: 18px 22px; }
  .chairman-quote-card { padding: 26px; }
}