:root {
  --color-bg: #f8f5ef;
  --color-bg-soft: #eee7dc;
  --color-surface: #ffffff;
  --color-text: #24211d;
  --color-muted: #6f6a63;
  --color-border: #ded6ca;
  --color-primary: #2f6f64;
  --color-primary-dark: #214e47;
  --color-accent: #c58b55;
  --shadow-soft: 0 18px 50px rgba(36, 33, 29, 0.08);
  --shadow-card: 0 12px 28px rgba(36, 33, 29, 0.08);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Roboto", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
}

h1, h2, h3, h4, h5, h6,
.section-title,
.hero-title {
  font-family: "Quicksand", sans-serif;
}

img {
  max-width: 100%;
}

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

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

.section-padding {
  padding: 108px 0;
  scroll-margin-top: 86px;
}

.bg-soft {
  background: var(--color-bg-soft);
}

.site-header {
  background: rgba(248, 245, 239, 0.9);
  border-bottom: 1px solid rgba(222, 214, 202, 0.75);
  backdrop-filter: blur(18px);
}

.navbar,
.navbar-nav .nav-link,
.navbar-brand {
  font-family: "Raleway", sans-serif;
}

.navbar {
  padding: 16px 0;
}

.navbar-brand {
  color: var(--color-text);
  letter-spacing: -0.03em;
}

.navbar-nav .nav-link {
  color: var(--color-muted);
  font-size: 0.95rem;
  font-weight: 600;
  padding-right: 0.85rem !important;
  padding-left: 0.85rem !important;
}

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

.navbar-toggler {
  border: 0;
  padding: 0.35rem 0.5rem;
}

.navbar-toggler:focus {
  box-shadow: 0 0 0 0.2rem rgba(47, 111, 100, 0.15);
}

.hero-section {
  min-height: 100vh;
  padding-top: 150px;
  display: flex;
  align-items: center;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.section-kicker::before {
  content: "";
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--color-accent);
}

.hero-title,
.section-heading h2,
.contact-section h2 {
  color: var(--color-text);
  font-weight: 700;
  letter-spacing: -0.06em;
}

.hero-title {
  max-width: 920px;
  font-size: clamp(3rem, 7vw, 6.6rem);
  line-height: 0.92;
}

.hero-text {
  max-width: 760px;
  color: var(--color-text);
  font-size: clamp(1.15rem, 2vw, 1.35rem);
  line-height: 1.65;
}

.hero-note {
  max-width: 740px;
  color: var(--color-muted);
  font-size: 1rem;
  line-height: 1.75;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--color-muted);
  font-size: 0.96rem;
  font-weight: 600;
}

.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero-meta i {
  color: var(--color-primary);
}

.hero-photo-card {
  max-width: 330px;
  margin-left: auto;
  border: 1px solid var(--color-border);
  border-radius: 28px;
  overflow: hidden;
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.hero-photo-card img {
  width: 100%;
  height: auto;
  display: block;
  image-rendering: auto;
}

.btn {
  border-radius: 999px;
  font-weight: 700;
}

.btn-primary {
  --bs-btn-bg: var(--color-primary);
  --bs-btn-border-color: var(--color-primary);
  --bs-btn-hover-bg: var(--color-primary-dark);
  --bs-btn-hover-border-color: var(--color-primary-dark);
  --bs-btn-active-bg: var(--color-primary-dark);
  --bs-btn-active-border-color: var(--color-primary-dark);
}

.btn-outline-dark {
  --bs-btn-color: var(--color-text);
  --bs-btn-border-color: var(--color-border);
  --bs-btn-hover-bg: var(--color-text);
  --bs-btn-hover-border-color: var(--color-text);
}

.btn-link-custom {
  color: var(--color-primary);
  text-decoration: none;
  padding-left: 0;
  padding-right: 0;
}

.btn-link-custom:hover {
  color: var(--color-primary-dark);
}

.section-heading {
  max-width: 880px;
  margin-bottom: 48px;
}

.section-heading h2,
.contact-section h2 {
  margin-top: 14px;
  font-size: clamp(2.1rem, 4vw, 3.6rem);
  line-height: 1.05;
}

.content-card,
.timeline-card,
.skill-card,
.cert-card,
.mini-card,
.project-card {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.content-card,
.timeline-card,
.skill-card,
.cert-card,
.mini-card {
  border-radius: var(--radius-lg);
  padding: 28px;
}

.content-card h3,
.timeline-card h3,
.skill-card h3,
.cert-card h3,
.mini-card h3,
.project-card h3 {
  color: var(--color-text);
  font-weight: 800;
  letter-spacing: -0.035em;
}

.content-card p,
.timeline-card p,
.skill-card p,
.cert-card p,
.mini-card p,
.project-card p {
  color: var(--color-muted);
  line-height: 1.72;
}

.check-list {
  display: grid;
  gap: 12px;
  padding-left: 0;
  list-style: none;
}

.check-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-muted);
  font-weight: 600;
}

.check-list i {
  color: var(--color-primary);
}

.mini-card {
  height: 100%;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.mini-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-soft);
}

.mini-card i,
.skill-icon,
.cert-card > i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  margin-bottom: 18px;
  border-radius: 14px;
  color: var(--color-primary);
  background: rgba(47, 111, 100, 0.11);
  font-size: 1.35rem;
}

.mini-card h3 {
  font-size: 1.1rem;
}

.skill-card {
  height: 100%;
}

.skill-card .skill-summary {
  margin: 0 0 14px;
  color: var(--color-text);
  font-size: 0.98rem;
  line-height: 1.65;
}

.skill-card .skill-tags {
  margin: 0;
  color: var(--color-muted);
  font-size: 0.92rem;
  line-height: 1.75;
}

.skill-card .skill-tags strong {
  color: var(--color-text);
  font-weight: 800;
}

.skill-card-wide {
  max-width: none;
}

.timeline-card h3 {
  margin-bottom: 28px;
}

.timeline-item {
  position: relative;
  padding-left: 28px;
  padding-bottom: 30px;
  border-left: 2px solid rgba(47, 111, 100, 0.2);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-primary);
  box-shadow: 0 0 0 5px rgba(47, 111, 100, 0.12);
}

.timeline-date {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.timeline-item h4 {
  margin-bottom: 4px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.timeline-place {
  color: var(--color-text) !important;
  font-weight: 700;
}

.project-card {
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.project-card:hover {
  transform: translateY(-7px);
  box-shadow: var(--shadow-soft);
}

.project-image {
  height: 190px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
  background: #f4efe7;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  padding: 14px;
  transition: transform 0.35s ease;
}

.project-card:hover .project-image img {
  transform: scale(1.035);
}

.project-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 26px;
}

.project-tag {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.project-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.project-meta .project-tag {
  margin-bottom: 0;
}

.project-card-disabled {
  opacity: 0.88;
}

.project-card-disabled:hover {
  transform: none;
}

.project-disabled-text {
  color: var(--color-muted);
  font-size: 0.84rem;
  font-weight: 700;
}

.tech-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
  margin-bottom: 18px;
}

.tech-list span {
  display: inline-flex;
  align-items: center;
  padding: 5px 9px;
  border-radius: 999px;
  background: rgba(47, 118, 106, 0.12);
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 700;
}

.project-links {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding-top: 8px;
}

.project-links a {
  color: var(--color-primary);
  font-size: 0.84rem;
  font-weight: 800;
  text-decoration: none;
}

.project-links a:hover {
  color: var(--color-accent);
}

.cert-card {
  display: flex;
  gap: 18px;
  height: 100%;
}

.cert-card > i {
  flex: 0 0 auto;
  margin-bottom: 0;
}

.cert-card h3 {
  font-size: 1.15rem;
}

.cert-org {
  color: var(--color-primary) !important;
  font-weight: 800;
  margin-bottom: 8px;
}

.contact-section p {
  max-width: 760px;
  margin-right: auto;
  margin-left: auto;
  color: var(--color-muted);
  font-size: 1.05rem;
  line-height: 1.75;
}

.site-footer {
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
  background: #f1eadf;
  font-size: 0.9rem;
}

.back-to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 10;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  color: #ffffff;
  background: var(--color-primary);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: 0.25s ease;
}

.back-to-top:hover {
  color: #ffffff;
  background: var(--color-primary-dark);
}

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

@media (max-width: 991.98px) {
  .navbar-collapse {
    padding: 18px 0 6px;
  }

  .hero-section {
    min-height: auto;
    padding-top: 130px;
  }

  .hero-photo-card {
    max-width: 300px;
    margin: 40px auto 0;
  }
}

@media (max-width: 575.98px) {
  .section-padding {
    padding: 78px 0;
  }

  .hero-title {
    font-size: clamp(2.8rem, 16vw, 4.2rem);
  }

  .content-card,
  .timeline-card,
  .skill-card,
  .cert-card,
  .mini-card,
  .project-content {
    padding: 22px;
  }

  .cert-card {
    flex-direction: column;
  }
}