:root {
  --default-font: "Roboto", system-ui, -apple-system, "Segoe UI", "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  --heading-font: "Raleway", sans-serif;
  --display-font: "Inter", "Raleway", sans-serif;
  --nav-font: "Raleway", sans-serif;

  --background-color: #f2f4f8;
  --default-color: #374151;
  --heading-color: #1e293b;
  --accent-color: #2563eb;
  --muted-color: #94a3b8;
  --surface-color: #ffffff;
  --contrast-color: #ffffff;
  --glass-surface: rgba(255, 255, 255, 0.55);
  --glass-border: rgba(255, 255, 255, 0.5);

  --nav-color: #1e293b;
  --nav-hover-color: #2563eb;
  --nav-mobile-background-color: rgba(242, 244, 248, 0.95);
  --nav-dropdown-background-color: rgba(255, 255, 255, 0.95);
  --nav-dropdown-color: #1f2937;
  --nav-dropdown-hover-color: #2563eb;

  --nav-width: 140px;
  --shadow-soft: 0 24px 72px rgba(37, 99, 235, 0.16);
}

:root {
  scroll-behavior: smooth;
}

.light-background {
  --background-color: #eef2f7;
  --surface-color: #ffffff;
}

body {
  color: var(--default-color);
  background-color: var(--background-color);
  font-family: var(--default-font);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden; /* prevents scrollbar from 100vw hero behind fixed nav */
  background-image: radial-gradient(1200px 600px at 10% -10%, rgba(37, 99, 235, 0.12), transparent 60%),
    radial-gradient(900px 500px at 90% 10%, rgba(37, 99, 235, 0.08), transparent 55%);
  background-attachment: fixed;
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: rgba(37, 99, 235, 0.75);
}

a:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.35);
  outline-offset: 2px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--heading-color);
  font-family: var(--heading-font);
}

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

section,
.section {
  color: var(--default-color);
  background-color: var(--background-color);
  padding: clamp(72px, 10vw, 120px) 0;
  scroll-margin-top: 80px;
  overflow: clip;
}

.section-title {
  padding-bottom: clamp(24px, 4vw, 40px);
}

.section-label {
  display: inline-block;
  font-family: var(--heading-font);
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--muted-color);
  margin-bottom: 12px;
}

.section-title h2 {
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 700;
  margin: 0 0 12px 0;
}

.section-lead {
  margin: 0;
  max-width: 720px;
  color: var(--default-color);
}

/* ─── Global Header ─────────────────────────────────────────── */

.header {
  color: var(--default-color);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  padding: 24px 14px;
  transition: all ease-in-out 0.3s;
  overflow-y: auto;
  z-index: 997;
  width: var(--nav-width);
  backdrop-filter: blur(16px) saturate(140%);
  background: rgba(242, 244, 248, 0.85);
  border-right: 1px solid rgba(255, 255, 255, 0.55);
}

@media (max-width: 1199px) {
  .header {
    background-color: var(--nav-mobile-background-color);
    width: 260px;
    left: -100%;
    box-shadow: 12px 0 40px rgba(15, 23, 42, 0.08);
  }
}

@media (min-width: 1200px) {
  .header {
    top: 50%;
    bottom: auto;
    left: 16px;
    transform: translateY(-50%);
    padding: 0;
    width: auto;
    background: transparent;
    border-right: 0;
    backdrop-filter: none;
    overflow: visible;
    box-shadow: none;
  }

  .navmenu ul {
    width: auto;
  }

  .navmenu a,
  .navmenu a:focus {
    width: auto;
  }
}

.header.header-show {
  left: 0;
}

.header .header-toggle {
  color: var(--contrast-color);
  background-color: var(--accent-color);
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  position: fixed;
  top: 15px;
  right: 15px;
  z-index: 9999;
  transition: background-color 0.3s;
}

.header .header-toggle:hover {
  background-color: rgba(37, 99, 235, 0.85);
}

/* ─── Navigation Menu ───────────────────────────────────────── */

.navmenu {
  padding: 0;
  z-index: 9997;
}

.navmenu ul {
  list-style: none;
  padding: 0;
  margin: 0;
  width: 100%;
}

.navmenu a,
.navmenu a:focus {
  color: var(--nav-color);
  font-family: var(--nav-font);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  margin-bottom: 10px;
  font-size: 14px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.08);
  height: 52px;
  width: 100%;
  overflow: hidden;
  transition: 0.3s;
}

.navmenu a i,
.navmenu a:focus i {
  font-size: 20px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-color);
  background: rgba(37, 99, 235, 0.15);
}

.navmenu a span,
.navmenu a:focus span {
  white-space: nowrap;
}

@media (min-width: 992px) {
  .navmenu a,
  .navmenu a:focus {
    max-width: 56px;
    justify-content: center;
  }

  .navmenu a span,
  .navmenu a:focus span {
    display: none;
  }

  .navmenu a:hover,
  .navmenu li:hover > a {
    max-width: 180px;
    justify-content: flex-start;
  }

  .navmenu a:hover span,
  .navmenu li:hover > a span {
    display: inline;
  }
}

.navmenu a:hover,
.navmenu .active,
.navmenu .active:focus,
.navmenu li:hover > a {
  color: var(--contrast-color);
  background: var(--nav-hover-color);
}

.navmenu a:hover i,
.navmenu .active i,
.navmenu li:hover > a i {
  color: var(--contrast-color);
  background: rgba(255, 255, 255, 0.2);
}

/* ─── Hero Section ──────────────────────────────────────────── */

.hero {
  width: 100vw;
  min-height: 100vh;
  position: relative;
  display: block;
  text-align: left;
  padding: 0;
  background-image: url("../img/hero-bg.jpg");
  background-image: image-set(
    url("../img/hero-bg.webp") type("image/webp"),
    url("../img/hero-bg.jpg") type("image/jpeg")
  );
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    95deg,
    rgba(248, 250, 252, 0.9) 0%,
    rgba(248, 250, 252, 0.72) 42%,
    rgba(248, 250, 252, 0.32) 70%,
    rgba(248, 250, 252, 0.12) 100%
  );
  z-index: 1;
}

.hero-shell {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  align-items: center;
  gap: clamp(28px, 6vw, 72px);
  padding: clamp(96px, 12vw, 160px) clamp(32px, 6vw, 96px);
  padding-left: clamp(88px, 8vw, 140px);
}

.hero-left {
  max-width: 620px;
}

.hero-title {
  font-family: var(--display-font);
  font-size: clamp(40px, 5.6vw, 64px);
  font-weight: 700;
  color: var(--heading-color);
  margin-bottom: 8px;
  line-height: 1.05;
}

.hero-role {
  margin: 0 0 14px 0;
  font-size: clamp(18px, 2.3vw, 26px);
  font-weight: 600;
  color: rgba(30, 41, 59, 0.85);
}

.hero-role .typed {
  border-bottom: 2px solid rgba(37, 99, 235, 0.3);
  padding-bottom: 2px;
}

.hero-intro {
  margin: 0;
  font-size: 15px;
  color: rgba(51, 65, 85, 0.78);
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.4px;
  border: 1px solid transparent;
  transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.hero-btn-primary {
  background: var(--accent-color);
  color: var(--contrast-color);
  box-shadow: 0 16px 28px rgba(37, 99, 235, 0.2);
}

.hero-btn-primary:hover {
  background: rgba(37, 99, 235, 0.85);
  color: var(--contrast-color);
  transform: translateY(-1px);
}

.hero-btn-ghost {
  background: rgba(255, 255, 255, 0.6);
  color: var(--accent-color);
  border-color: rgba(37, 99, 235, 0.25);
}

.hero-btn-ghost:hover {
  background: rgba(255, 255, 255, 0.8);
  color: var(--accent-color);
  transform: translateY(-1px);
}

.hero-social {
  margin-top: 24px;
  display: flex;
  gap: 16px;
  align-items: center;
}

.hero-social a {
  font-size: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: rgba(30, 41, 59, 0.7);
  transition: color 0.3s ease;
}

.hero-social a:hover {
  color: var(--accent-color);
}

/* FIX 4: Right column — add display:flex so hero-right is never
   collapsed, and clamp the tech strip properly.                 */
.hero-right {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.tech-strip {
  width: 100%;
  max-width: 420px;
  overflow: hidden;
  opacity: 0.65;
  /* Soft edge fade so items dissolve in/out cleanly */
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 12%,
    black 88%,
    transparent 100%
  );
  mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 12%,
    black 88%,
    transparent 100%
  );
}

/* FIX 5: Animation name in the original CSS was "tech-marquee"
   but there was no matching @keyframes block with that name —
   the block was named differently. Unified here.               */
.tech-track {
  display: flex;
  align-items: center;
  width: max-content;
  animation: tech-marquee 26s linear infinite;
}

.tech-track:hover {
  animation-play-state: paused;
}

.tech-group {
  display: flex;
  align-items: center;
  gap: 22px;
  padding-right: 22px;
}

.tech-item {
  font-family: var(--heading-font);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: rgba(30, 41, 59, 0.55);
  position: relative;
  padding-right: 22px;
  white-space: nowrap;
}

.tech-item::after {
  content: "•";
  position: absolute;
  right: 6px;
  color: rgba(30, 41, 59, 0.35);
}

.tech-group .tech-item:last-child::after {
  content: "";
}

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

@media (max-width: 991px) {
  .hero-shell {
    grid-template-columns: 1fr;
    padding: 120px 24px 80px;
  }

  .hero-right {
    justify-content: flex-start;
    margin-top: 28px;
  }

  .tech-strip {
    max-width: 100%;
  }
}

/* ─── About Section ─────────────────────────────────────────── */

.about-photo img {
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12), 0 20px 60px rgba(37, 99, 235, 0.15);
}

.about-role {
  font-weight: 700;
  font-size: 26px;
  margin-bottom: 12px;
}

.about-intro {
  font-style: italic;
  margin-bottom: 20px;
}

.about-details {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 32px;
  margin: 24px 0;
}

.about-details .detail-row {
  border-top: 1px solid rgba(37, 99, 235, 0.08);
  padding-top: 12px;
}

.about-details dt {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--muted-color);
  margin-bottom: 4px;
}

.about-details dd {
  margin: 0;
  font-weight: 500;
  color: var(--heading-color);
}

.about-cta a {
  font-weight: 600;
  letter-spacing: 0.4px;
}

@media (max-width: 768px) {
  .about-details {
    grid-template-columns: 1fr;
  }
}

/* ─── Skills Section ─────────────────────────────────────────── */

.skills-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 48px;
  border-top: 1px solid rgba(37, 99, 235, 0.08);
  padding-top: 24px;
}

.skill-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 15px;
  font-weight: 600;
}

.skill-line {
  flex: 1;
  border-bottom: 1px dotted rgba(37, 99, 235, 0.25);
  transform: translateY(-2px);
}

.skill-level {
  font-size: 13px;
  font-style: italic;
  color: var(--muted-color);
  font-weight: 400;
}

@media (max-width: 991px) {
  .skills-list {
    grid-template-columns: 1fr;
  }
}

/* ─── Resume Section ─────────────────────────────────────────── */

.resume-columns {
  row-gap: 48px;
}

.resume-timeline {
  --timeline-offset: 24px;
  border-left: 2px solid rgba(37, 99, 235, 0.25);
  padding-left: var(--timeline-offset);
  margin-top: 24px;
}

.resume-entry {
  position: relative;
}

.resume-entry::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--timeline-offset) - 4px);
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-color);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.resume-entry + .resume-entry {
  border-top: 1px solid rgba(37, 99, 235, 0.1);
  margin-top: 32px;
  padding-top: 32px;
}

.resume-role {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 6px 0;
}

.resume-meta {
  font-size: 13px;
  color: var(--muted-color);
  margin-bottom: 12px;
}

.resume-point {
  margin: 0 0 8px 0;
  font-size: 15px;
}

/* ─── Portfolio Section ──────────────────────────────────────── */

.portfolio .isotope-container {
  display: block;
}

.portfolio .portfolio-filters {
  padding: 0;
  margin: 0 0 32px 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.portfolio .portfolio-filters li {
  cursor: pointer;
  padding: 8px 22px;
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  border-radius: 999px;
  transition: all 0.3s ease-in-out;
  font-family: var(--heading-font);
  color: var(--muted-color);
}

.portfolio .portfolio-filters li:hover {
  color: var(--accent-color);
}

.portfolio .portfolio-filters li.filter-active {
  color: var(--contrast-color);
  background-color: var(--accent-color);
}

.project-row {
  display: flex;
  align-items: center;
  gap: clamp(48px, 6vw, 96px);
  padding: clamp(64px, 8vw, 96px) 0;
  border-top: 1px solid rgba(37, 99, 235, 0.08);
}

.project-row--flip {
  flex-direction: row-reverse;
}

.project-visual {
  flex-shrink: 0;
}

.project-circle {
  width: clamp(280px, 28vw, 380px);
  height: clamp(280px, 28vw, 380px);
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid rgba(255, 255, 255, 0.7);
  box-shadow: var(--shadow-soft);
  transition: transform 0.6s ease;
}

.project-circle img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-row:hover .project-circle {
  transform: scale(1.035);
}

.project-content {
  flex: 1;
  max-width: 560px;
}

.project-label {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent-color);
  opacity: 0.7;
  margin-bottom: 12px;
  display: inline-block;
}

.project-title {
  font-size: clamp(22px, 2.5vw, 30px);
  font-weight: 700;
  margin: 8px 0 12px 0;
}

.project-desc {
  font-size: 15px;
  line-height: 1.8;
  margin: 0 0 12px 0;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.project-tags span {
  background: rgba(37, 99, 235, 0.07);
  border: 1px solid rgba(37, 99, 235, 0.18);
  border-radius: 50px;
  padding: 4px 14px;
  font-size: 12px;
  color: var(--accent-color);
}

.project-highlight {
  font-size: 13px;
  font-style: italic;
  color: var(--muted-color);
  margin: 8px 0 12px 0;
}

.project-link {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
  position: relative;
  display: inline-block;
}

.project-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--accent-color);
  transition: width 0.3s ease;
}

.project-link:hover::after {
  width: 100%;
}

.achievement-row {
  display: flex;
  gap: 48px;
  align-items: flex-start;
  padding: 40px 0;
  border-top: 1px solid rgba(37, 99, 235, 0.08);
}

.achievement-year {
  font-size: clamp(36px, 4vw, 52px);
  font-weight: 700;
  color: rgba(37, 99, 235, 0.15);
  font-family: var(--heading-font);
  line-height: 1;
  flex-shrink: 0;
  width: 100px;
}

.achievement-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.achievement-desc {
  font-size: 14px;
  color: var(--muted-color);
  line-height: 1.7;
}

.achievement-link {
  font-size: 13px;
  font-weight: 600;
  display: inline-block;
  margin-top: 10px;
}

.cert-item {
  display: flex;
  align-items: baseline;
  gap: 24px;
  padding: 24px 0;
  border-bottom: 1px solid rgba(37, 99, 235, 0.08);
}

.cert-issuer {
  width: 120px;
  flex-shrink: 0;
  font-size: 13px;
  color: var(--muted-color);
}

.cert-title {
  font-size: 18px;
  font-weight: 600;
  flex: 1;
  margin: 0;
}

.cert-link {
  font-size: 13px;
  font-weight: 600;
}

.resp-item {
  position: relative;
  padding-left: 32px;
  margin-bottom: 40px;
  border-left: 2px solid rgba(37, 99, 235, 0.18);
}

.resp-item:last-child {
  margin-bottom: 0;
}

.resp-timeline-dot {
  position: absolute;
  left: -5px;
  top: 4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-color);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.resp-period {
  display: block;
  font-size: 13px;
  color: var(--muted-color);
  margin-bottom: 6px;
}

.resp-title {
  font-size: 18px;
  font-weight: 600;
  margin: 0;
}

@media (max-width: 991px) {
  .project-row,
  .project-row--flip {
    flex-direction: column;
    align-items: flex-start;
  }

  .project-circle {
    width: clamp(220px, 70vw, 320px);
    height: clamp(220px, 70vw, 320px);
  }

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

  .achievement-year {
    width: auto;
  }
}

@media (max-width: 768px) {
  .cert-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .cert-issuer {
    width: auto;
  }
}

/* ─── Contact Section ────────────────────────────────────────── */

.contact address {
  margin-bottom: 0;
}

.contact .info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(37, 99, 235, 0.08);
}

.contact .info-item i {
  color: var(--accent-color);
  font-size: 20px;
  margin-top: 4px;
}

.contact .info-item h3 {
  padding: 0;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 5px;
}

.contact .info-item p {
  padding: 0;
  margin-bottom: 0;
  font-size: 14px;
}

.contact-form-wrap {
  background: var(--glass-surface);
  backdrop-filter: blur(14px);
  border-radius: 24px;
  border: 1px solid var(--glass-border);
  padding: 40px 48px;
}

.contact .php-email-form {
  height: 100%;
}

.contact .php-email-form input[type=text],
.contact .php-email-form input[type=email],
.contact .php-email-form textarea {
  font-size: 14px;
  padding: 12px 4px;
  box-shadow: none;
  border-radius: 0;
  color: var(--default-color);
  background-color: transparent;
  border: none;
  border-bottom: 1px solid rgba(37, 99, 235, 0.2);
}

.contact .php-email-form input[type=text]:focus,
.contact .php-email-form input[type=email]:focus,
.contact .php-email-form textarea:focus {
  border-color: var(--accent-color);
  box-shadow: none;
}

.contact .php-email-form input[type=text]::placeholder,
.contact .php-email-form input[type=email]::placeholder,
.contact .php-email-form textarea::placeholder {
  color: rgba(148, 163, 184, 0.8);
}

.contact .php-email-form button[type=submit] {
  color: var(--contrast-color);
  background: var(--accent-color);
  border: 0;
  padding: 12px 40px;
  transition: 0.4s;
  border-radius: 50px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.contact .php-email-form button[type=submit]:hover {
  background: rgba(37, 99, 235, 0.85);
}

@media (max-width: 768px) {
  .contact-form-wrap {
    padding: 32px 24px;
  }
}

/* ─── Footer ─────────────────────────────────────────────────── */

.footer {
  color: var(--default-color);
  background: linear-gradient(to bottom, transparent, rgba(37, 99, 235, 0.04));
  font-size: 14px;
  text-align: center;
  padding: 60px 0;
  position: relative;
}

.footer h2 {
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  position: relative;
  padding: 0;
  margin: 0 0 12px 0;
}

.footer p {
  font-size: 15px;
  padding: 0;
  margin: 0 0 30px 0;
}

.footer .social-links {
  margin: 0 0 30px 0;
}

.footer .social-links a {
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-color);
  color: var(--contrast-color);
  line-height: 1;
  margin: 0 4px;
  border-radius: 50%;
  text-align: center;
  width: 36px;
  height: 36px;
  transition: 0.3s;
}

.footer .social-links a:hover {
  background: rgba(37, 99, 235, 0.8);
  text-decoration: none;
}

.footer .copyright {
  padding-top: 24px;
  border-top: 1px solid rgba(37, 99, 235, 0.08);
}

/* ─── Preloader ──────────────────────────────────────────────── */

#preloader {
  position: fixed;
  inset: 0;
  z-index: 999999;
  overflow: hidden;
  background: var(--background-color);
  transition: all 0.6s ease-out;
}

#preloader:before {
  content: "";
  position: fixed;
  top: calc(50% - 30px);
  left: calc(50% - 30px);
  border: 6px solid #ffffff;
  border-color: var(--accent-color) transparent var(--accent-color) transparent;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  animation: animate-preloader 1.5s linear infinite;
}

@keyframes animate-preloader {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ─── Scroll Top Button ──────────────────────────────────────── */

.scroll-top {
  position: fixed;
  visibility: hidden;
  opacity: 0;
  right: 15px;
  bottom: -15px;
  z-index: 99999;
  background-color: var(--accent-color);
  width: 44px;
  height: 44px;
  border-radius: 50px;
  transition: all 0.4s;
}

.scroll-top i {
  font-size: 24px;
  color: var(--contrast-color);
  line-height: 0;
}

.scroll-top:hover {
  background-color: rgba(37, 99, 235, 0.85);
  color: var(--contrast-color);
}

.scroll-top.active {
  visibility: visible;
  opacity: 1;
  bottom: 15px;
}

/* ─── Utility ────────────────────────────────────────────────── */

/* Disable aos animation delay on mobile devices */
@media screen and (max-width: 768px) {
  [data-aos-delay] {
    transition-delay: 0 !important;
  }
}

/* PHP Email Form Messages */
.php-email-form .loading {
  display: none;
  background: var(--surface-color);
  text-align: center;
  padding: 15px;
  margin-bottom: 24px;
}

.php-email-form .loading:before {
  content: "";
  display: inline-block;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  margin: 0 10px -6px 0;
  border: 3px solid var(--accent-color);
  border-top-color: var(--surface-color);
  animation: php-email-form-loading 1s linear infinite;
}

@keyframes php-email-form-loading {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@media (max-width: 575px) {
  section,
  .section {
    padding: 64px 0;
  }
}

/* CERTIFICATIONS */
.filter-certifications {
  width: 100%;
}

.cert-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  border-bottom: 1px solid #e6ebf2;
  gap: 32px;
}

.cert-issuer {
  width: 90px;
  flex-shrink: 0;
  font-size: 14px;
  color: #8da0be;
}

.cert-title {
  flex: 1;
  margin: 0;
  font-size: 28px;
  font-weight: 500;
  color: #16233b;
}

.cert-link {
  flex-shrink: 0;
  color: #2f66ff;
  font-weight: 600;
  text-decoration: none;
}

@media (max-width: 768px) {
  .cert-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .cert-title {
    font-size: 22px;
  }
}


/* RESPONSIBILITIES */
.filter-responsibility {
  width: 100%;
}

.resp-item {
  display: flex;
  align-items: flex-start;
  gap: 22px;
  padding: 22px 0;
  border-bottom: 1px solid #e6ebf2;
}

.resp-timeline-dot {
  width: 10px;
  height: 10px;
  background: #2f66ff;
  border-radius: 50%;
  margin-top: 8px;
  flex-shrink: 0;
}

.resp-content {
  display: flex;
  flex-direction: column;
}

.resp-period {
  font-size: 14px;
  color: #8da0be;
  margin-bottom: 6px;
}

.resp-title {
  margin: 0;
  font-size: 28px;
  font-weight: 500;
  color: #16233b;
  line-height: 1.3;
}

@media (max-width: 768px) {
  .resp-title {
    font-size: 22px;
  }
}