/* ========================================================================
   SHIVAM ENGINEERS & FABRICATORS — GLOBAL STYLES
   All class names prefixed with "sef-" to avoid Hostinger conflicts.
   ======================================================================== */

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

:root {
  --sef-bg: #06111A;
  --sef-bg2: #091924;
  --sef-card: #0D202D;
  --sef-accent: #159FE3;
  --sef-light: #4FC4FF;
  --sef-text: #FFFFFF;
  --sef-muted: #91A4B2;
  --sef-radius: 14px;
  --sef-maxw: 1200px;
  --sef-space: clamp(32px, 6vw, 80px);
  --sef-nav-bg: rgba(6, 17, 26, .75);
  --sef-nav-bg-scrolled: rgba(6, 17, 26, .95);
  --sef-nav-border: rgba(79, 196, 255, .08);
  --sef-nav-border-scrolled: rgba(79, 196, 255, .18);
  --sef-card-border: rgba(79, 196, 255, .1);
  --sef-card-border-hover: rgba(79, 196, 255, .3);
  --sef-divider: rgba(79, 196, 255, .08);
  --sef-hero-overlay: linear-gradient(180deg, rgba(6, 17, 26, .72) 0%, rgba(6, 17, 26, .6) 40%, rgba(6, 17, 26, .92) 100%);
  --sef-gal-cap-bg: linear-gradient(transparent, rgba(6, 17, 26, .92));
  --sef-cta-overlay: rgba(6, 17, 26, .85);
  --sef-about-badge-bg: rgba(13, 32, 45, .92);
  --sef-shadow: 0 16px 40px rgba(0, 0, 0, .4);
  --sef-input-bg: #06111A;
  --sef-mobile-menu-bg: #091924;
  --sef-overlay-bg: rgba(0, 0, 0, .5);
}

/* LIGHT THEME OVERRIDES */
:root.sef-light {
  --sef-bg: #F4F7FA;
  --sef-bg2: #EAF0F5;
  --sef-card: #FFFFFF;
  --sef-text: #0B1B26;
  --sef-muted: #55697A;
  --sef-nav-bg: rgba(244, 247, 250, .85);
  --sef-nav-bg-scrolled: rgba(255, 255, 255, .97);
  --sef-nav-border: rgba(220, 228, 234, .6);
  --sef-nav-border-scrolled: rgba(220, 228, 234, .9);
  --sef-card-border: #DCE4EA;
  --sef-card-border-hover: #159FE3;
  --sef-divider: rgba(220, 228, 234, .5);
  --sef-hero-overlay: linear-gradient(180deg, rgba(6, 17, 26, .68) 0%, rgba(6, 17, 26, .52) 40%, rgba(6, 17, 26, .88) 100%);
  --sef-gal-cap-bg: linear-gradient(transparent, rgba(6, 17, 26, .88));
  --sef-cta-overlay: rgba(6, 17, 26, .82);
  --sef-about-badge-bg: rgba(255, 255, 255, .95);
  --sef-shadow: 0 8px 24px rgba(15, 35, 50, 0.06);
  --sef-input-bg: #F4F7FA;
  --sef-mobile-menu-bg: #FFFFFF;
  --sef-overlay-bg: rgba(0, 0, 0, .3);
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--sef-bg);
  color: var(--sef-text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background .4s ease, color .4s ease;
}

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

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

ul {
  list-style: none;
}

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

.sef-section {
  padding: var(--sef-space) 0;
  position: relative;
}

.sef-section-alt {
  background: var(--sef-bg2);
  transition: background .4s ease;
}

.sef-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--sef-light);
  margin-bottom: 14px;
}

.sef-heading {
  font-size: clamp(26px, 4vw, 42px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.5px;
  margin-bottom: 18px;
}

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

.sef-lead {
  font-size: clamp(15px, 1.6vw, 18px);
  color: var(--sef-muted);
  max-width: 640px;
}

.sef-center {
  text-align: center;
}

.sef-center .sef-lead {
  margin: 0 auto;
}

.sef-section-head {
  margin-bottom: 48px;
}

.sef-center .sef-section-head {
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

/* Brand — wordmark treatment, display font, one line, never wraps */
.sef-brand {
  font-size: clamp(14px, 1.8vw, 19px);
  font-weight: 600;
  letter-spacing: -0.3px;
  white-space: nowrap;
  color: var(--sef-text);
  display: block;
  text-decoration: none;
  line-height: 1.2;
}

/* Buttons */
.sef-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 14px 30px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 50px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .25s, box-shadow .25s, background .25s, border-color .25s;
  text-align: center;
}

.sef-btn-primary {
  background: linear-gradient(135deg, var(--sef-accent), var(--sef-light));
  color: #03101a;
  box-shadow: 0 8px 30px rgba(21, 159, 227, .32);
}

.sef-btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(21, 159, 227, .5);
}

.sef-btn-outline {
  background: transparent;
  border-color: rgba(79, 196, 255, .4);
  color: var(--sef-text);
}

.sef-btn-outline:hover {
  border-color: var(--sef-light);
  background: rgba(79, 196, 255, .08);
  transform: translateY(-3px);
}

.sef-btn-block {
  width: 100%;
}

/* Reveal animation */
.sef-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .7s ease, transform .7s ease;
}

.sef-reveal.sef-in {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================================================
   2. NAVBAR — refined for a cleaner, more professional, modern look
   ======================================================================== */
#sef-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 20px 0;
  background: var(--sef-nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--sef-nav-border);
  transition: padding .3s, background .3s, border-color .4s ease, box-shadow .3s ease;
}

#sef-nav.sef-scrolled {
  padding: 13px 0;
  background: var(--sef-nav-bg-scrolled);
  border-bottom-color: var(--sef-nav-border-scrolled);
  box-shadow: 0 4px 24px rgba(0, 0, 0, .12);
}

:root.sef-light #sef-nav.sef-scrolled {
  box-shadow: 0 4px 20px rgba(15, 35, 50, 0.08);
}

.sef-nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.sef-nav-links {
  display: flex;
  align-items: center;
  gap: clamp(18px, 2.2vw, 30px);
}

.sef-nav-links a {
  font-size: clamp(12.5px, 0.9vw, 14px);
  font-weight: 600;
  letter-spacing: .2px;
  color: var(--sef-muted);
  position: relative;
  padding: 8px 2px;
  white-space: nowrap;
  transition: color .25s ease;
}

.sef-nav-links a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--sef-accent), var(--sef-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s cubic-bezier(.4, 0, .2, 1);
}

.sef-nav-links a:hover {
  color: var(--sef-text);
}

.sef-nav-links a:hover::after {
  transform: scaleX(1);
}

.sef-nav-cta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.sef-nav-phone {
  font-size: 14px;
  font-weight: 600;
  color: var(--sef-light);
  white-space: nowrap;
  padding-right: 16px;
  border-right: 1px solid var(--sef-nav-border-scrolled);
}

.sef-nav-phone:empty {
  display: none;
}

.sef-nav-cta .sef-btn {
  height: 42px;
  padding: 0 24px;
  letter-spacing: .2px;
}

.sef-burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  transition: background .2s ease;
}

.sef-burger:hover {
  background: rgba(79, 196, 255, .1);
}

.sef-burger span {
  width: 26px;
  height: 3px;
  background: var(--sef-text);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}

.sef-burger.sef-active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.sef-burger.sef-active span:nth-child(2) {
  opacity: 0;
}

.sef-burger.sef-active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.sef-mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 82vw);
  background: var(--sef-mobile-menu-bg);
  border-left: 1px solid var(--sef-card-border);
  z-index: 999;
  padding: 90px 28px 30px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  box-shadow: -12px 0 40px rgba(0, 0, 0, .25);
  transform: translateX(100%);
  transition: transform .35s ease, background .4s ease;
  overflow-y: auto;
}

.sef-mobile-menu.sef-open {
  transform: translateX(0);
}

.sef-mobile-menu a {
  font-size: 17px;
  font-weight: 600;
  color: var(--sef-muted);
  padding: 14px 10px;
  border-radius: 10px;
  border-bottom: 1px solid rgba(79, 196, 255, .08);
  transition: color .2s, background .2s, padding-left .2s;
}

.sef-mobile-menu a:hover {
  color: var(--sef-light);
  background: rgba(79, 196, 255, .06);
  padding-left: 16px;
}

.sef-mobile-menu .sef-btn {
  margin-top: 18px;
}

.sef-overlay {
  position: fixed;
  inset: 0;
  background: var(--sef-overlay-bg);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity .3s, background .4s ease;
}

.sef-overlay.sef-open {
  opacity: 1;
  pointer-events: auto;
}

/* ========================================================================
   1. HERO (background video + image fallback)
   ======================================================================== */
#sef-home {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 80px;
}

.sef-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.sef-hero-bg video,
.sef-hero-bg img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sef-hero-bg img {
  z-index: 1;
}

.sef-hero-bg video {
  z-index: 2;
  object-position: center;
}

.sef-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 3;
  background: var(--sef-hero-overlay);
}

.sef-hero-inner {
  position: relative;
  z-index: 4;
  width: 100%;
  padding: 40px 0;
}

.sef-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 50px;
  background: rgba(79, 196, 255, .12);
  border: 1px solid rgba(79, 196, 255, .3);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--sef-light);
  margin-bottom: 22px;
}

.sef-hero-title {
  font-size: clamp(34px, 6.5vw, 64px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -1px;
  max-width: 880px;
  margin-bottom: 0;
}

.sef-hero-title .sef-hero-accent {
  display: block;
  background: linear-gradient(135deg, var(--sef-accent), var(--sef-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 8px;
}

.sef-hero-title .sef-hero-tagline {
  display: block;
  font-size: clamp(20px, 3vw, 32px);
  font-weight: 400;
  color: rgba(255, 255, 255, .9);
  letter-spacing: -0.3px;
  line-height: 1.3;
  margin-top: 10px;
}

.sef-hero-sub {
  font-size: clamp(16px, 2vw, 21px);
  color: rgba(255, 255, 255, .85);
  max-width: 560px;
  margin-top: 28px;
  margin-bottom: 36px;
  font-weight: 300;
}

.sef-hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 50px;
}

.sef-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(24px, 5vw, 56px);
}

.sef-hero-stat .sef-stat-num {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 800;
  color: var(--sef-light);
  line-height: 1;
}

.sef-hero-stat .sef-stat-label {
  font-size: 13px;
  color: var(--sef-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-top: 6px;
}

/* ========================================================================
   3. ABOUT
   ======================================================================== */
.sef-about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  align-items: center;
}

.sef-about-img {
  position: relative;
  border-radius: var(--sef-radius);
  overflow: hidden;
}

.sef-about-img img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  transition: transform .8s ease;
}

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

.sef-about-badge {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  background: var(--sef-about-badge-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--sef-card-border);
  border-radius: 12px;
  padding: 20px;
  transition: background .4s ease, border-color .4s ease;
}

.sef-about-badge .sef-ab-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--sef-light);
  line-height: 1;
}

.sef-about-badge .sef-ab-label {
  font-size: 14px;
  color: var(--sef-muted);
  margin-top: 4px;
}

.sef-about-text p {
  color: var(--sef-muted);
  margin-bottom: 18px;
  font-size: 16px;
}

.sef-about-feats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 28px;
}

.sef-feat {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.sef-feat-ic {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  border-radius: 10px;
  background: rgba(79, 196, 255, .1);
  border: 1px solid rgba(79, 196, 255, .2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sef-feat-ic svg {
  width: 22px;
  height: 22px;
  fill: none;
  stroke: var(--sef-light);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sef-feat-tt {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 2px;
}

.sef-feat-ds {
  font-size: 13px;
  color: var(--sef-muted);
}

/* ========================================================================
   4. TIMELINE / 25-YEAR JOURNEY
   ======================================================================== */
.sef-timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.sef-timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, transparent, var(--sef-accent), transparent);
  transform: translateX(-50%);
}

.sef-tl-item {
  position: relative;
  width: 50%;
  padding: 0 40px 48px 0;
}

.sef-tl-item:nth-child(even) {
  margin-left: 50%;
  padding: 0 0 48px 40px;
  text-align: left;
}

.sef-tl-item:nth-child(odd) {
  text-align: right;
}

.sef-tl-dot {
  position: absolute;
  top: 4px;
  right: -9px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--sef-accent);
  border: 3px solid var(--sef-bg);
  box-shadow: 0 0 0 4px rgba(21, 159, 227, .25);
  transition: border-color .4s ease;
}

.sef-tl-item:nth-child(even) .sef-tl-dot {
  left: -9px;
  right: auto;
}

.sef-tl-card {
  background: var(--sef-card);
  border: 1px solid var(--sef-card-border);
  border-radius: var(--sef-radius);
  padding: 22px;
  transition: transform .3s, border-color .3s, background .4s ease;
}

.sef-tl-card:hover {
  transform: translateY(-4px);
  border-color: var(--sef-card-border-hover);
}

.sef-tl-year {
  font-size: 22px;
  font-weight: 800;
  color: var(--sef-light);
  margin-bottom: 6px;
}

.sef-tl-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.sef-tl-desc {
  font-size: 14px;
  color: var(--sef-muted);
}

/* ========================================================================
   5. SERVICES
   ======================================================================== */
.sef-serv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.sef-serv-card {
  background: var(--sef-card);
  border: 1px solid var(--sef-card-border);
  border-radius: var(--sef-radius);
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
  transition: transform .35s, border-color .35s, box-shadow .35s, background .4s ease;
}

.sef-serv-card:hover {
  transform: translateY(-6px);
  border-color: var(--sef-card-border-hover);
  box-shadow: var(--sef-shadow);
}

:root.sef-light .sef-serv-card {
  box-shadow: 0 8px 24px rgba(15, 35, 50, 0.06);
}

.sef-serv-img {
  overflow: hidden;
  aspect-ratio: 16/10;
}

.sef-serv-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .6s;
}

.sef-serv-card:hover .sef-serv-img img {
  transform: scale(1.08);
}

.sef-serv-body {
  padding: 26px;
}

.sef-serv-ic {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(21, 159, 227, .15), rgba(79, 196, 255, .15));
  border: 1px solid rgba(79, 196, 255, .2);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.sef-serv-ic svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: var(--sef-light);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sef-serv-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}

.sef-serv-desc {
  font-size: 14px;
  color: var(--sef-muted);
  margin-bottom: 16px;
}

.sef-serv-list li {
  font-size: 13px;
  color: var(--sef-muted);
  padding: 4px 0 4px 22px;
  position: relative;
}

.sef-serv-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--sef-light);
  font-weight: 700;
}

/* ========================================================================
   6. WHY CHOOSE US
   ======================================================================== */
.sef-why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 24px;
}

.sef-why-card {
  background: var(--sef-card);
  border: 1px solid var(--sef-card-border);
  border-radius: var(--sef-radius);
  padding: 30px;
  text-align: center;
  transition: transform .3s, border-color .3s, background .4s ease;
}

.sef-why-card:hover {
  transform: translateY(-5px);
  border-color: var(--sef-card-border-hover);
}

.sef-why-ic {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(21, 159, 227, .12), rgba(79, 196, 255, .12));
  border: 1px solid rgba(79, 196, 255, .2);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sef-why-ic svg {
  width: 32px;
  height: 32px;
  fill: none;
  stroke: var(--sef-light);
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sef-why-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.sef-why-desc {
  font-size: 14px;
  color: var(--sef-muted);
}

/* ========================================================================
   7. PROCESS
   ======================================================================== */
.sef-proc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  counter-reset: step;
}

.sef-proc-step {
  background: var(--sef-card);
  border: 1px solid var(--sef-card-border);
  border-radius: var(--sef-radius);
  padding: 30px 24px;
  position: relative;
  transition: transform .3s, border-color .3s, background .4s ease;
}

.sef-proc-step:hover {
  transform: translateY(-5px);
  border-color: var(--sef-card-border-hover);
}

.sef-proc-num {
  counter-increment: step;
  font-size: 42px;
  font-weight: 800;
  color: rgba(79, 196, 255, .15);
  line-height: 1;
  margin-bottom: 14px;
}

.sef-proc-num::before {
  content: '0' counter(step);
}

.sef-proc-title {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.sef-proc-desc {
  font-size: 14px;
  color: var(--sef-muted);
}

/* ========================================================================
   8. INDUSTRIES / APPLICATIONS
   ======================================================================== */
.sef-ind-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 18px;
}

.sef-ind-card {
  background: var(--sef-card);
  border: 1px solid var(--sef-card-border);
  border-radius: var(--sef-radius);
  padding: 26px 18px;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
  transition: transform .3s, border-color .3s, background .3s;
}

.sef-ind-card:hover {
  transform: translateY(-4px);
  border-color: rgba(79, 196, 255, .35);
  background: rgba(21, 159, 227, .06);
}

:root.sef-light .sef-ind-card {
  box-shadow: 0 8px 24px rgba(15, 35, 50, 0.06);
}

.sef-ind-ic {
  font-size: 32px;
  margin-bottom: 12px;
}

.sef-ind-ic svg {
  width: 36px;
  height: 36px;
  fill: none;
  stroke: var(--sef-light);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sef-ind-name {
  font-size: 14px;
  font-weight: 600;
}

/* ========================================================================
   9. STATISTICS BANNER
   ======================================================================== */
#sef-stats {
  position: relative;
  background: linear-gradient(135deg, var(--sef-bg2), var(--sef-bg));
  border-top: 1px solid rgba(79, 196, 255, .1);
  border-bottom: 1px solid rgba(79, 196, 255, .1);
}

.sef-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 24px;
  text-align: center;
}

.sef-stat-item .sef-si-num {
  font-size: clamp(36px, 5vw, 56px);
  font-weight: 800;
  background: linear-gradient(135deg, var(--sef-accent), var(--sef-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.sef-stat-item .sef-si-plus {
  -webkit-text-fill-color: var(--sef-light);
}

.sef-stat-item .sef-si-label {
  font-size: 14px;
  color: var(--sef-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-top: 10px;
}

/* ========================================================================
   10. GALLERY (photos + videos)
   ======================================================================== */
.sef-gal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.sef-gal-item {
  border-radius: var(--sef-radius);
  overflow: hidden;
  position: relative;
  background: var(--sef-card);
  transition: background .4s ease;
}

.sef-gal-item img,
.sef-gal-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.sef-gal-media {
  aspect-ratio: 4/3;
  overflow: hidden;
}

.sef-gal-item .sef-gal-cap {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--sef-gal-cap-bg);
  padding: 30px 18px 16px;
  font-size: 14px;
  font-weight: 600;
}

.sef-gal-media video {
  aspect-ratio: 4/3;
}

/* ========================================================================
   11. FAQ
   ======================================================================== */
.sef-faq-wrap {
  max-width: 780px;
  margin: 0 auto;
}

.sef-faq-item {
  background: var(--sef-card);
  border: 1px solid var(--sef-card-border);
  border-radius: var(--sef-radius);
  margin-bottom: 14px;
  overflow: hidden;
  transition: border-color .3s, background .4s ease;
}

.sef-faq-item.sef-open {
  border-color: var(--sef-card-border-hover);
}

.sef-faq-q {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  color: var(--sef-text);
  font-size: 16px;
  font-weight: 600;
  font-family: inherit;
}

.sef-faq-ic {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(79, 196, 255, .12);
  border: 1px solid rgba(79, 196, 255, .25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: transform .3s;
}

.sef-faq-item.sef-open .sef-faq-ic {
  transform: rotate(45deg);
}

.sef-faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}

.sef-faq-a-inner {
  padding: 0 24px 22px;
  color: var(--sef-muted);
  font-size: 15px;
}

/* ========================================================================
   12. CTA
   ======================================================================== */
#sef-cta {
  position: relative;
  overflow: hidden;
}

.sef-cta-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.sef-cta-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sef-cta-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--sef-cta-overlay);
}

.sef-cta-inner {
  position: relative;
  z-index: 1;
  text-align: center;
}

.sef-cta-title {
  font-size: clamp(26px, 4.5vw, 44px);
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.15;
}

.sef-cta-text {
  font-size: clamp(15px, 1.8vw, 18px);
  color: var(--sef-muted);
  max-width: 560px;
  margin: 0 auto 30px;
}

.sef-cta-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

/* ========================================================================
   13. CONTACT
   ======================================================================== */
.sef-contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(32px, 5vw, 56px);
}

.sef-contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sef-contact-card {
  background: var(--sef-card);
  border: 1px solid var(--sef-card-border);
  border-radius: var(--sef-radius);
  padding: 24px;
  transition: background .4s ease, border-color .4s ease;
}

.sef-contact-card h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.sef-contact-card h3 .sef-cc-ic {
  font-size: 20px;
}

.sef-phone-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--sef-divider);
}

.sef-phone-row:last-child {
  border-bottom: none;
}

.sef-phone-num {
  font-size: 16px;
  font-weight: 600;
}

.sef-phone-label {
  font-size: 12px;
  color: var(--sef-muted);
}

.sef-phone-links {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.sef-ic-link {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: transform .2s, background .2s;
}

.sef-ic-link:hover {
  transform: translateY(-2px);
}

.sef-ic-call {
  background: rgba(21, 159, 227, .12);
  border: 1px solid rgba(21, 159, 227, .3);
}

.sef-ic-wa {
  background: rgba(37, 211, 102, .12);
  border: 1px solid rgba(37, 211, 102, .3);
}

.sef-email-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--sef-divider);
  font-size: 15px;
  transition: color .2s;
}

.sef-email-link:last-child {
  border-bottom: none;
}

.sef-email-link:hover {
  color: var(--sef-light);
}

.sef-email-link .sef-em-ic {
  font-size: 18px;
  flex-shrink: 0;
}

.sef-form {
  background: var(--sef-card);
  border: 1px solid var(--sef-card-border);
  border-radius: var(--sef-radius);
  padding: 30px;
  transition: background .4s ease, border-color .4s ease;
}

.sef-field {
  margin-bottom: 18px;
}

.sef-field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 7px;
  color: var(--sef-muted);
}

.sef-field input,
.sef-field select,
.sef-field textarea {
  width: 100%;
  padding: 13px 16px;
  background: var(--sef-input-bg);
  border: 1px solid var(--sef-card-border);
  border-radius: 10px;
  color: var(--sef-text);
  font-size: 15px;
  font-family: inherit;
  transition: border-color .25s, background .4s ease, color .4s ease;
}

.sef-field input:focus,
.sef-field select:focus,
.sef-field textarea:focus {
  outline: none;
  border-color: var(--sef-accent);
}

.sef-field textarea {
  resize: vertical;
  min-height: 110px;
}

.sef-field select {
  cursor: pointer;
}

.sef-field select option {
  background: var(--sef-bg);
}

.sef-field-error {
  border-color: #e74c3c !important;
}

.sef-err-msg {
  font-size: 12px;
  color: #e74c3c;
  margin-top: 5px;
  display: none;
}

.sef-err-msg.sef-show {
  display: block;
}

.sef-form-success {
  display: none;
  text-align: center;
  padding: 30px 20px;
}

.sef-form-success.sef-show {
  display: block;
}

.sef-success-ic {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: rgba(37, 211, 102, .15);
  border: 2px solid rgba(37, 211, 102, .4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: #25d664;
}

.sef-form-success p {
  font-size: 16px;
  font-weight: 600;
}

.sef-form-success span {
  font-size: 14px;
  color: var(--sef-muted);
}

/* ========================================================================
   14. FOOTER
   ======================================================================== */
#sef-footer {
  background: var(--sef-bg2);
  border-top: 1px solid var(--sef-card-border);
  padding: 56px 0 26px;
  transition: background .4s ease, border-color .4s ease;
}

.sef-footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 32px;
  margin-bottom: 40px;
}

.sef-footer-brand .sef-brand {
  margin-bottom: 16px;
}

.sef-footer-brand p {
  font-size: 14px;
  color: var(--sef-muted);
  max-width: 320px;
  margin-bottom: 18px;
}

.sef-footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
}

.sef-footer-col ul li {
  margin-bottom: 10px;
}

.sef-footer-col a {
  font-size: 14px;
  color: var(--sef-muted);
  transition: color .2s;
}

.sef-footer-col a:hover {
  color: var(--sef-light);
}

.sef-footer-contact li {
  font-size: 14px;
  color: var(--sef-muted);
  margin-bottom: 10px;
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.sef-footer-contact .sef-fc-ic {
  flex-shrink: 0;
}

.sef-footer-bottom {
  border-top: 1px solid var(--sef-divider);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--sef-muted);
}

/* ========================================================================
   15. FLOATING WHATSAPP BUTTON
   ======================================================================== */
.sef-wa-fab {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 997;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.sef-wa-chooser {
  display: none;
  flex-direction: column;
  gap: 8px;
  background: var(--sef-card);
  border: 1px solid var(--sef-card-border);
  border-radius: 14px;
  padding: 12px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, .5);
  animation: sefFadeUp .3s ease;
  transition: background .4s ease, border-color .4s ease;
}

.sef-wa-chooser.sef-show {
  display: flex;
}

.sef-wa-chooser-title {
  font-size: 12px;
  color: var(--sef-muted);
  padding: 4px 8px 8px;
  font-weight: 600;
}

.sef-wa-choice {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(37, 211, 102, .08);
  border: 1px solid rgba(37, 211, 102, .2);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: background .2s;
}

.sef-wa-choice:hover {
  background: rgba(37, 211, 102, .16);
}

.sef-wa-choice .sef-wa-c-ic {
  font-size: 18px;
}

.sef-wa-btn {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: #25d664;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(37, 211, 102, .5);
  transition: transform .25s;
  animation: sefWaPulse 2.5s infinite;
}

.sef-wa-btn:hover {
  transform: scale(1.08);
}

.sef-wa-btn svg {
  width: 32px;
  height: 32px;
  fill: #fff;
}

.sef-wa-close {
  position: absolute;
  top: -10px;
  right: -10px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--sef-bg);
  border: 1px solid var(--sef-card-border);
  color: var(--sef-text);
  font-size: 14px;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition: background .4s ease;
}

.sef-wa-close.sef-show {
  display: flex;
}

@keyframes sefWaPulse {

  0%,
  100% {
    box-shadow: 0 8px 24px rgba(37, 211, 102, .5), 0 0 0 0 rgba(37, 211, 102, .4);
  }

  50% {
    box-shadow: 0 8px 24px rgba(37, 211, 102, .5), 0 0 0 14px rgba(37, 211, 102, 0);
  }
}

@keyframes sefFadeUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================================================
   THEME TOGGLE BUTTON
   ======================================================================== */
.sef-theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(79, 196, 255, .1);
  border: 1px solid var(--sef-card-border);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .25s, border-color .25s, transform .25s;
  flex-shrink: 0;
  padding: 0;
}

.sef-theme-toggle:hover {
  background: rgba(79, 196, 255, .18);
  border-color: var(--sef-card-border-hover);
  transform: translateY(-2px);
}

.sef-theme-toggle svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: var(--sef-light);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke .4s ease;
}

:root.sef-light .sef-theme-toggle svg {
  stroke: #55697A;
}

:root.sef-light .sef-theme-toggle:hover svg {
  stroke: #159FE3;
}

/* ========================================================================
   SOCIAL ICONS (uniform circular line-icon buttons)
   ======================================================================== */
.sef-social-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.sef-social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(79, 196, 255, .08);
  border: 1px solid var(--sef-card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .25s, background .25s, border-color .25s, color .25s;
  color: var(--sef-muted);
  flex-shrink: 0;
}

.sef-social-link:hover {
  transform: translateY(-3px);
  background: rgba(21, 159, 227, .12);
  border-color: var(--sef-accent);
  color: var(--sef-accent);
}

.sef-social-link svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.sef-social-contact-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--sef-muted);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.sef-footer-social {
  margin-top: 18px;
}

/* ========================================================================
   RESPONSIVE
   ======================================================================== */
@media(max-width:1024px) {

  .sef-nav-links,
  .sef-nav-cta {
    display: none;
  }

  .sef-burger {
    display: flex;
  }
}

@media(max-width:900px) {
  .sef-about-grid {
    grid-template-columns: 1fr;
  }

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

  .sef-footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .sef-about-feats {
    grid-template-columns: 1fr;
  }

  /* Timeline becomes single column, left-aligned */
  .sef-timeline::before {
    left: 20px;
  }

  .sef-tl-item,
  .sef-tl-item:nth-child(even) {
    width: 100%;
    margin-left: 0;
    padding: 0 0 40px 50px;
    text-align: left;
  }

  .sef-tl-item:nth-child(odd) {
    text-align: left;
  }

  .sef-tl-item .sef-tl-dot {
    left: 11px;
    right: auto;
  }

  .sef-mobile-theme-row {
    display: flex;
    gap: 12px;
    margin-top: 18px;
    align-items: center;
  }

  .sef-mobile-theme-row .sef-btn {
    flex: 1;
    margin-top: 0;
  }
}

@media(max-width:560px) {
  .sef-footer-grid {
    grid-template-columns: 1fr;
  }

  .sef-hero-cta .sef-btn {
    width: 100%;
  }

  .sef-footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .sef-wa-fab {
    bottom: 16px;
    right: 16px;
  }
}

/* ========================================================================
   REDUCED MOTION
   ======================================================================== */
@media(prefers-reduced-motion:reduce) {

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }

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

  .sef-hero-bg video {
    display: none;
  }
}

/* ========================================================================
   LIGHT THEME POLISH — improved contrast & visibility
   Keeps the original layout/design intact.
   ======================================================================== */
:root.sef-light {
  --sef-bg: #f7fafc;
  --sef-bg2: #eef4f8;
  --sef-card: #ffffff;
  --sef-accent: #087fbd;
  --sef-light: #05699f;
  --sef-text: #10202b;
  --sef-muted: #526674;

  --sef-nav-bg: rgba(247, 250, 252, .92);
  --sef-nav-bg-scrolled: rgba(255, 255, 255, .98);
  --sef-nav-border: rgba(16, 32, 43, .10);
  --sef-nav-border-scrolled: rgba(16, 32, 43, .14);

  --sef-card-border: #d7e1e8;
  --sef-card-border-hover: #087fbd;
  --sef-divider: rgba(16, 32, 43, .10);

  /* Keep hero text readable because the hero uses a photo/video background. */
  --sef-hero-overlay: linear-gradient(
    180deg,
    rgba(5, 18, 27, .70) 0%,
    rgba(5, 18, 27, .56) 42%,
    rgba(5, 18, 27, .90) 100%
  );
  --sef-gal-cap-bg: linear-gradient(transparent, rgba(5, 18, 27, .88));
  --sef-cta-overlay: rgba(5, 18, 27, .84);
  --sef-about-badge-bg: rgba(255, 255, 255, .96);
  --sef-shadow: 0 12px 32px rgba(16, 32, 43, .10);
  --sef-input-bg: #ffffff;
  --sef-mobile-menu-bg: #ffffff;
  --sef-overlay-bg: rgba(8, 20, 28, .32);
}

:root.sef-light .sef-section:not(.sef-section-alt) {
  background: var(--sef-bg);
}

:root.sef-light .sef-section-alt {
  background:
    linear-gradient(180deg, #eef4f8 0%, #f3f7fa 100%);
}

:root.sef-light .sef-nav-links a:hover,
:root.sef-light .sef-footer-col a:hover {
  color: var(--sef-accent);
}

:root.sef-light .sef-btn-outline {
  border-color: rgba(8, 127, 189, .48);
  color: var(--sef-text);
  background: rgba(255, 255, 255, .48);
}

:root.sef-light .sef-btn-outline:hover {
  background: rgba(8, 127, 189, .08);
  border-color: var(--sef-accent);
}

:root.sef-light .sef-btn-primary {
  color: #ffffff;
  box-shadow: 0 8px 28px rgba(8, 127, 189, .24);
}

:root.sef-light .sef-serv-card,
:root.sef-light .sef-why-card,
:root.sef-light .sef-proc-step,
:root.sef-light .sef-tl-card,
:root.sef-light .sef-contact-card,
:root.sef-light .sef-form,
:root.sef-light .sef-faq-item,
:root.sef-light .sef-ind-card {
  box-shadow: 0 8px 24px rgba(16, 32, 43, .07);
}

:root.sef-light .sef-serv-card:hover,
:root.sef-light .sef-why-card:hover,
:root.sef-light .sef-proc-step:hover,
:root.sef-light .sef-tl-card:hover,
:root.sef-light .sef-contact-card:hover,
:root.sef-light .sef-ind-card:hover {
  box-shadow: 0 14px 34px rgba(16, 32, 43, .11);
}

:root.sef-light .sef-phone-num,
:root.sef-light .sef-contact-card h3,
:root.sef-light .sef-form label,
:root.sef-light .sef-faq-q {
  color: var(--sef-text);
}

:root.sef-light .sef-input,
:root.sef-light .sef-form input,
:root.sef-light .sef-form textarea,
:root.sef-light .sef-form select {
  background: #ffffff;
  color: var(--sef-text);
  border-color: #cbd8e1;
}

:root.sef-light .sef-input:focus,
:root.sef-light .sef-form input:focus,
:root.sef-light .sef-form textarea:focus,
:root.sef-light .sef-form select:focus {
  border-color: var(--sef-accent);
  box-shadow: 0 0 0 3px rgba(8, 127, 189, .10);
}

:root.sef-light .sef-ic-link.sef-ic-call {
  color: #087fbd;
  border-color: rgba(8, 127, 189, .20);
  background: rgba(8, 127, 189, .07);
}

:root.sef-light .sef-ic-link.sef-ic-wa {
  color: #128c55;
  border-color: rgba(18, 140, 85, .22);
  background: rgba(18, 140, 85, .08);
}

:root.sef-light .sef-ic-link.sef-ic-call:hover {
  color: #ffffff;
  background: #087fbd;
}

:root.sef-light .sef-ic-link.sef-ic-wa:hover {
  color: #ffffff;
  background: #128c55;
}

:root.sef-light .sef-wa-choice:hover {
  background: rgba(18, 140, 85, .08);
}

:root.sef-light #sef-footer {
  background: #e9f0f5;
}

:root.sef-light .sef-footer-bottom {
  border-top-color: rgba(16, 32, 43, .12);
}

@media (prefers-reduced-motion: reduce) {
  :root.sef-light *,
  :root.sef-light *::before,
  :root.sef-light *::after {
    transition-duration: .01ms !important;
  }
}