/* =========================
   Root variables / themes
========================= */
:root {
  --bg-primary: #05070b;
  --bg-secondary: #0d1118;
  --surface: rgba(18, 22, 30, 0.72);
  --surface-strong: rgba(12, 16, 22, 0.92);
  --surface-soft: rgba(255, 255, 255, 0.04);
  --text-primary: #f4efe7;
  --text-secondary: #c8bca9;
  --text-muted: #9d937f;
  --border: rgba(219, 189, 149, 0.18);
  --accent: #d8b27d;
  --accent-strong: #f3d7ab;
  --accent-soft: rgba(216, 178, 125, 0.12);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 18px;
  --container: min(1180px, calc(100% - 2rem));
  --header-height: 84px;
}

body.light-theme {
  --bg-primary: #f3eee6;
  --bg-secondary: #ffffff;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: rgba(255, 255, 255, 0.96);
  --surface-soft: rgba(28, 33, 44, 0.04);
  --text-primary: #181b22;
  --text-secondary: #5b5347;
  --text-muted: #7b7265;
  --border: rgba(73, 53, 26, 0.12);
  --accent: #9c6f3d;
  --accent-strong: #b9864d;
  --accent-soft: rgba(156, 111, 61, 0.1);
  --shadow: 0 20px 60px rgba(77, 59, 36, 0.14);
}

/* =========================
   Base
========================= */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(155, 93, 197, 0.14), transparent 20%),
    radial-gradient(circle at bottom right, rgba(216, 178, 125, 0.14), transparent 22%),
    linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));
  color: var(--text-primary);
  min-height: 100vh;
  transition: background 0.35s ease, color 0.35s ease;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

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

button,
input,
textarea {
  font: inherit;
}

.container {
  width: var(--container);
  margin: 0 auto;
}

.section {
  position: relative;
  padding: 6rem 0;
}

.section-kicker {
  margin: 0 0 0.9rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 2.5rem;
}

.section-heading h2 {
  margin: 0;
  font-family: "Playfair Display", serif;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.1;
}

.section-intro {
  margin: 1rem 0 0;
  color: var(--text-secondary);
  line-height: 1.8;
}

.glass-card {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-xl);
}

/* =========================
   Decorative background
========================= */
.page-noise,
.page-accent {
  position: fixed;
  pointer-events: none;
  z-index: -2;
}

.page-noise {
  inset: 0;
  opacity: 0.12;
  background:
    repeating-linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.04) 0,
      rgba(255, 255, 255, 0.04) 1px,
      transparent 1px,
      transparent 60px
    );
}

.page-accent {
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.45;
}

.page-accent-1 {
  width: 320px;
  height: 320px;
  top: -80px;
  right: 10%;
  background: rgba(176, 112, 224, 0.24);
}

.page-accent-2 {
  width: 360px;
  height: 360px;
  bottom: 5%;
  left: -100px;
  background: rgba(216, 178, 125, 0.18);
}

/* =========================
   Header / navbar
========================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  backdrop-filter: blur(18px);
  background: rgba(5, 7, 11, 0.55);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

body.light-theme .site-header {
  background: rgba(243, 238, 230, 0.76);
}

.navbar {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
}

.brand-mark {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #17120d;
  font-weight: 800;
  box-shadow: 0 12px 30px rgba(216, 178, 125, 0.24);
}

.brand-text {
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-link {
  position: relative;
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: color 0.25s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.35rem;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-strong));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s ease;
}

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

.nav-link:hover::after,
.nav-link.active::after {
  transform: scaleX(1);
}

.nav-toggle,
.theme-toggle {
  border: 0;
  cursor: pointer;
}

.nav-toggle {
  display: none;
  background: transparent;
  padding: 0.3rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  border-radius: 999px;
  background: var(--text-primary);
}

.nav-toggle span + span {
  margin-top: 5px;
}

.theme-toggle {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--surface-soft);
  color: var(--text-primary);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.theme-icon {
  position: absolute;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.theme-icon-light {
  opacity: 0;
  transform: translateY(120%);
}

body.light-theme .theme-icon-dark {
  opacity: 0;
  transform: translateY(-120%);
}

body.light-theme .theme-icon-light {
  opacity: 1;
  transform: translateY(0);
}

/* =========================
   Hero
========================= */
.hero {
  padding-top: 4rem;
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 2rem;
  align-items: center;
}

.hero-title {
  margin: 0;
  font-family: "Playfair Display", serif;
  font-size: clamp(3.2rem, 8vw, 6.3rem);
  line-height: 0.95;
}

.hero-subtitle {
  max-width: 720px;
  margin: 1.5rem 0 0;
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.85;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 160px;
  padding: 0.95rem 1.45rem;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

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

.btn-primary {
  color: #18120c;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 12px 30px rgba(216, 178, 125, 0.22);
}

.btn-secondary {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.02);
  border-color: var(--border);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.hero-badges span {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.8rem 1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
}

.hero-panel {
  padding: 2rem;
}

.profile-placeholder {
  width: 112px;
  height: 112px;
  display: grid;
  place-items: center;
  border-radius: 32px;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #17120d;
  font-size: 2.25rem;
  font-weight: 800;
}

.mini-label {
  margin: 0 0 0.6rem;
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-panel h2 {
  margin: 0;
  font-family: "Playfair Display", serif;
  font-size: 2rem;
  line-height: 1.15;
}

.hero-panel p {
  color: var(--text-secondary);
  line-height: 1.75;
}

.quick-info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.quick-info-item {
  padding: 1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.quick-info-title {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* =========================
   About
========================= */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.5rem;
}

.about-card,
.stats-card {
  padding: 2rem;
}

.about-card h3 {
  margin-top: 0;
  margin-bottom: 1rem;
  font-family: "Playfair Display", serif;
  font-size: 1.8rem;
}

.about-card p {
  color: var(--text-secondary);
  line-height: 1.85;
}

.stats-card {
  display: grid;
  gap: 1rem;
}

.stat-box {
  padding: 1.15rem 1.2rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-value {
  display: block;
  font-weight: 800;
  color: var(--accent-strong);
  margin-bottom: 0.3rem;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* =========================
   Skills
========================= */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
}

.skill-card {
  padding: 1.8rem;
}

.card-icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  margin-bottom: 1.15rem;
  font-size: 1.1rem;
  color: #17120d;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
}

.skill-card h3 {
  margin: 0 0 0.9rem;
  font-family: "Playfair Display", serif;
  font-size: 1.55rem;
}

.skill-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.85;
}

/* =========================
   Projects
========================= */
.project-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 1.75rem;
}

.filter-btn {
  padding: 0.75rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.25s ease;
}

.filter-btn:hover,
.filter-btn.active {
  color: #17120d;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  border-color: transparent;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}

.project-card {
  padding: 1.8rem;
  transition: transform 0.25s ease, opacity 0.3s ease;
}

.project-card.hidden {
  display: none;
}

.project-card:hover,
.skill-card:hover,
.education-card:hover,
.language-card:hover,
.contact-card:hover,
.timeline-card:hover {
  transform: translateY(-6px);
}

.project-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.project-tag {
  display: inline-flex;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.85rem;
  font-weight: 700;
}

.project-icon {
  color: var(--accent);
  font-size: 1.2rem;
}

.project-card h3 {
  margin: 0 0 0.85rem;
  font-family: "Playfair Display", serif;
  font-size: 1.6rem;
}

.project-card p,
.project-features {
  color: var(--text-secondary);
  line-height: 1.75;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1rem 0;
}

.project-tech span {
  padding: 0.45rem 0.7rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  font-size: 0.85rem;
}

.project-features {
  margin: 0;
  padding-left: 1.1rem;
}

/* =========================
   Timeline / experience
========================= */
.timeline {
  position: relative;
  display: grid;
  gap: 1.5rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(var(--accent), transparent);
  opacity: 0.5;
}

.timeline-item {
  position: relative;
  padding-left: 2.6rem;
}

.timeline-dot {
  position: absolute;
  left: 3px;
  top: 1.4rem;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: 0 0 0 7px rgba(216, 178, 125, 0.1);
}

.timeline-card {
  padding: 1.7rem;
}

.timeline-header h3 {
  margin: 0;
  font-family: "Playfair Display", serif;
  font-size: 1.5rem;
}

.timeline-period {
  margin: 0.35rem 0 0;
  color: var(--accent);
  font-weight: 600;
}

.timeline-card ul {
  margin: 1rem 0 0;
  padding-left: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* =========================
   Education / languages
========================= */
.education-grid,
.language-grid {
  display: grid;
  gap: 1.4rem;
}

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

.language-grid {
  grid-template-columns: repeat(3, 1fr);
}

.education-card,
.language-card {
  padding: 1.8rem;
}

.education-year {
  display: inline-flex;
  margin-bottom: 0.8rem;
  padding: 0.5rem 0.8rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.85rem;
  font-weight: 700;
}

.education-card h3,
.language-card h3 {
  margin: 0 0 0.7rem;
  font-family: "Playfair Display", serif;
}

.education-card p,
.language-card p {
  margin: 0;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* =========================
   Contact
========================= */
.contact-wrapper {
  padding: 2rem;
}

.contact-copy {
  max-width: 640px;
  margin-bottom: 1.8rem;
}

.contact-copy h2 {
  margin: 0;
  font-family: "Playfair Display", serif;
  font-size: clamp(2rem, 4vw, 3rem);
}

.contact-copy p:last-child {
  color: var(--text-secondary);
  line-height: 1.8;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.contact-card i {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #17120d;
  flex-shrink: 0;
}

.contact-card span {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.contact-card strong {
  color: var(--text-primary);
  line-height: 1.5;
}

/* =========================
   Footer / back to top
========================= */
.site-footer {
  padding: 1.4rem 0 2rem;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--text-muted);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 1.5rem;
}

.footer-link {
  color: var(--accent);
}

.back-to-top {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 18px;
  cursor: pointer;
  color: #17120d;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.25s ease;
  z-index: 1000;
}

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

/* =========================
   Reveal animation
========================= */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.reveal-delay-1 {
  transition-delay: 0.12s;
}

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

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

/* =========================
   Responsive
========================= */
@media (max-width: 1100px) {
  .hero-grid,
  .about-grid,
  .skills-grid,
  .projects-grid,
  .education-grid,
  .language-grid,
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-grid,
  .about-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-block;
  }

  .nav-menu {
    position: absolute;
    top: calc(var(--header-height) - 2px);
    left: 1rem;
    right: 1rem;
    display: grid;
    gap: 0.3rem;
    padding: 1rem;
    border-radius: 22px;
    background: var(--surface-strong);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.25s ease;
  }

  .nav-menu.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .navbar {
    gap: 0.75rem;
  }

  .brand-text {
    display: none;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 4.5rem 0;
  }

  .hero {
    padding-top: 2.5rem;
  }

  .projects-grid,
  .skills-grid,
  .education-grid,
  .language-grid,
  .contact-grid,
  .quick-info-grid {
    grid-template-columns: 1fr;
  }

  .hero-badges {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-content {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  .hero-title {
    font-size: 2.9rem;
  }

  .hero-panel,
  .about-card,
  .stats-card,
  .skill-card,
  .project-card,
  .timeline-card,
  .education-card,
  .language-card,
  .contact-wrapper {
    padding: 1.4rem;
  }

  .btn {
    width: 100%;
  }

  .contact-card {
    align-items: flex-start;
  }
}