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

/* ============================================================
   CSS VARIABLES — LIGHT THEME (DEFAULT)
============================================================ */
:root {
  --bg: #f0ede6;
  --bg-alt: #e8e3d9;
  --surface: #faf8f4;
  --border: #c4b9a4;
  --text: #1c1610;
  --muted: #6b5f52;
  --accent: #8b4513;
  --accent-2: #c47a35;
  --nav-bg: rgba(240, 237, 230, 0.92);
  --shadow: 0 4px 24px rgba(28, 22, 16, 0.1);
  --radius: 16px;
  --transition: 0.3s ease;
}

/* ============================================================
   CSS VARIABLES — DARK THEME
============================================================ */
[data-theme="dark"] {
  --bg: #12100e;
  --bg-alt: #1c1916;
  --surface: #1f1b17;
  --border: #3a2e24;
  --text: #f0ede6;
  --muted: #a89882;
  --accent: #d4874a;
  --accent-2: #e8aa6a;
  --nav-bg: rgba(18, 16, 14, 0.92);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

/* ============================================================
   BASE
============================================================ */
html {
  scroll-behavior: smooth;
}

body {
  font-family: "DM Sans", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  transition:
    background var(--transition),
    color var(--transition);
}

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

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

ul {
  padding-left: 20px;
}

/* ============================================================
   SCROLLBAR
============================================================ */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 99px;
}

/* ============================================================
   NAVBAR
============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 999;
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  padding: 0 6%;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition:
    background var(--transition),
    box-shadow var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow);
}

.logo {
  font-family: "Syne", Arial, sans-serif;
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
}

.logo span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 4px;
  align-items: center;
}

.nav-links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--muted);
  padding: 6px 14px;
  border-radius: 99px;
  transition: all 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  background: var(--bg-alt);
}

.nav-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.theme-btn {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 7px 16px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--text);
  font-family: "DM Sans", Arial, sans-serif;
  transition: all 0.2s;
}

.theme-btn:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 4px;
  transition: all 0.3s;
}

/* ============================================================
   MOBILE MENU
============================================================ */
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  z-index: 998;
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  padding: 14px 6%;
  flex-direction: column;
  gap: 4px;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  color: var(--text);
  font-weight: 500;
  padding: 10px 14px;
  border-radius: 10px;
  transition: background 0.2s;
}

.mobile-menu a:hover {
  background: var(--bg-alt);
}

/* ============================================================
   BUTTONS
============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: 99px;
  font-family: "DM Sans", Arial, sans-serif;
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-2);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(139, 69, 19, 0.28);
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* ============================================================
   SECTION SHARED
============================================================ */
section {
  padding: 90px 6%;
}

.section-alt {
  background: var(--bg-alt);
}

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.section-title {
  font-family: "Syne", Arial, sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 40px;
}

/* ============================================================
   SCROLL REVEAL
============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 0.65s ease,
    transform 0.65s ease;
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ============================================================
   HERO
============================================================ */
.hero {
  min-height: 100vh;
  padding-top: 100px;
  padding-bottom: 60px;
  padding-left: 6%;
  padding-right: 6%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
  max-width: 1400px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 6px 16px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 20px;
}

.hero-badge::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #4ade80;
  flex-shrink: 0;
  animation: blink 2s infinite;
}

@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
}

.hero-text h1 {
  font-family: "Syne", Arial, sans-serif;
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 12px;
}

.hero-text h1 span {
  color: var(--accent);
}

.hero-text h3 {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 10px;
}

.hero-text p {
  color: var(--muted);
  margin-bottom: 28px;
}

.hero-btns {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-img-wrap {
  flex-shrink: 0;
  position: relative;
}

.hero-img-wrap::before {
  content: "";
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    var(--accent),
    var(--accent-2),
    transparent,
    var(--accent)
  );
  animation: spin 8s linear infinite;
  opacity: 0.35;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.hero-img-wrap img {
  width: 210px;
  height: 210px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--bg);
  position: relative;
  z-index: 1;
}

/* ============================================================
   ABOUT
============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
}

.about-text p {
  color: var(--muted);
  margin-bottom: 14px;
}

.about-text h4 {
  font-family: "Syne", Arial, sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  margin: 18px 0 8px;
  color: var(--text);
}

.about-text ul li {
  color: var(--muted);
  font-size: 0.92rem;
}

.skills-wrap h4 {
  font-family: "Syne", Arial, sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 18px;
}

.skill-row {
  margin-bottom: 16px;
}

.skill-top {
  display: flex;
  justify-content: space-between;
  font-size: 0.88rem;
  font-weight: 500;
  margin-bottom: 6px;
}

.skill-top span:last-child {
  color: var(--accent);
  font-weight: 700;
}

.skill-bar {
  height: 7px;
  background: var(--border);
  border-radius: 99px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 99px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   EDUCATION
============================================================ */
.edu-timeline {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.edu-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 26px;
  display: flex;
  align-items: center;
  gap: 20px;
  position: relative;
  overflow: hidden;
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}

.edu-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(to bottom, var(--accent), var(--accent-2));
}

.edu-card:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow);
}

.edu-icon-wrap {
  width: 52px;
  height: 52px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.edu-icon-text {
  font-family: "Syne", Arial, sans-serif;
  font-weight: 800;
  font-size: 0.82rem;
  color: var(--accent);
}

.edu-info {
  flex: 1;
}

.edu-info h3 {
  font-family: "Syne", Arial, sans-serif;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 4px;
}

.edu-info p {
  color: var(--muted);
  font-size: 0.88rem;
}

.edu-year {
  flex-shrink: 0;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 4px 14px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
}

/* ============================================================
   PROJECTS
============================================================ */
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.filter-btn {
  padding: 7px 18px;
  border-radius: 99px;
  border: 1.5px solid var(--border);
  background: transparent;
  color: var(--muted);
  font-family: "DM Sans", Arial, sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 22px;
}

.project {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition:
    transform var(--transition),
    box-shadow var(--transition);
}

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

.project.hidden {
  display: none;
}

.project img {
  width: 100%;
  height: 170px;
  object-fit: cover;
  display: block;
}

.project-body {
  padding: 18px 20px 20px;
}

.project-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}

.tag {
  padding: 3px 10px;
  border-radius: 99px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
}

.project-body h3 {
  font-family: "Syne", Arial, sans-serif;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 6px;
}

.project-body p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 14px;
}

.project-link {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--accent);
  transition: letter-spacing 0.2s;
}

.project-link:hover {
  letter-spacing: 0.5px;
}

/* ============================================================
   CV
============================================================ */
.cv-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 32px;
}

.cv-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}

.cv-block h3 {
  font-family: "Syne", Arial, sans-serif;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 16px;
  color: var(--text);
}

.cv-row {
  display: flex;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

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

.cv-row span:first-child {
  color: var(--muted);
  min-width: 80px;
  font-size: 0.84rem;
}

.cv-row span:last-child {
  font-weight: 500;
}

.cv-list {
  list-style: disc;
  padding-left: 18px;
}

.cv-list li {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 8px;
}

.cv-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.cv-tag {
  padding: 6px 14px;
  border-radius: 99px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
}

.cv-download-wrap {
  text-align: center;
}

/* ============================================================
   CONTACT
============================================================ */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 50px;
  align-items: start;
}

.contact-info h3 {
  font-family: "Syne", Arial, sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.contact-info > p {
  color: var(--muted);
  margin-bottom: 28px;
  font-size: 0.95rem;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 14px;
}

.contact-icon {
  width: 42px;
  height: 42px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  overflow: hidden;
  padding: 6px;
}

.contact-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.contact-item small {
  display: block;
  font-size: 0.76rem;
  color: var(--muted);
  margin-bottom: 2px;
}

.contact-item strong {
  font-size: 0.9rem;
}

/* ---- Contact Form ---- */
.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 16px;
}

.form-group label {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text);
}

.form-group input,
.form-group textarea {
  padding: 11px 14px;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: "DM Sans", Arial, sans-serif;
  font-size: 0.92rem;
  outline: none;
  resize: none;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--muted);
  opacity: 0.7;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(139, 69, 19, 0.1);
}

.form-group input.input-error,
.form-group textarea.input-error {
  border-color: #e05252;
  box-shadow: 0 0 0 3px rgba(224, 82, 82, 0.1);
}

.form-error {
  font-size: 0.78rem;
  color: #e05252;
  min-height: 16px;
}

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 6px;
}

.checkbox-row input[type="checkbox"] {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  margin-top: 3px;
  accent-color: var(--accent);
  cursor: pointer;
}

.checkbox-row label {
  font-size: 0.84rem;
  color: var(--muted);
  cursor: pointer;
}

.form-success {
  display: none;
  margin-top: 16px;
  background: rgba(74, 222, 128, 0.1);
  border: 1.5px solid rgba(74, 222, 128, 0.3);
  border-radius: 10px;
  padding: 14px;
  text-align: center;
  color: #16a34a;
  font-weight: 600;
  font-size: 0.92rem;
}

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

/* ============================================================
   FOOTER
============================================================ */
footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 36px 6%;
}

.footer-top {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-logo {
  font-family: "Syne", Arial, sans-serif;
  font-size: 1.2rem;
  font-weight: 800;
}

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

.footer-copy {
  color: var(--muted);
  font-size: 0.85rem;
}

.social {
  display: flex;
  gap: 10px;
}

.social a {
  width: 38px;
  height: 38px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 6px;
  transition: all 0.2s;
}

.social a:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.social a img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* ============================================================
   TOAST NOTIFICATION
============================================================ */
.toast {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 9999;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  pointer-events: none;
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 0.3s ease,
    transform 0.3s ease;
}

.toast.show {
  opacity: 1;
  transform: none;
}

/* ============================================================
   RESPONSIVE — TABLET
============================================================ */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
  .cv-grid {
    grid-template-columns: 1fr;
  }
  .contact-wrap {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   RESPONSIVE — MOBILE
============================================================ */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hamburger {
    display: flex;
  }

  .hero {
    flex-direction: column-reverse;
    text-align: center;
    padding-top: 90px;
    min-height: auto;
  }

  .hero-btns {
    justify-content: center;
  }

  .hero-img-wrap img {
    width: 170px;
    height: 170px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

  section {
    padding: 70px 5%;
  }
}