/* ---------- Base ---------- */
:root {
  --bg: #0b0f17;
  --surface: #121826;
  --ink: #e7ecf5;
  --muted: #aab3c5;
  --line: rgba(255, 255, 255, 0.1);

  --accent: #ff5722;
  --accentSoft: rgba(255, 87, 34, 0.14);

  --shadow: 0 16px 50px rgba(0, 0, 0, 0.45);
  --shadow2: 0 12px 30px rgba(0, 0, 0, 0.35);

  --radius: 16px;
  --radiusSm: 12px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family:
    "Poppins",
    system-ui,
    -apple-system,
    Segoe UI,
    Roboto,
    Arial,
    sans-serif;
}
body {
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
ul {
  list-style: none;
}

/* ---------- Layout ---------- */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: 88px 0;
}
.section.alt {
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--surface) 55%, transparent),
    transparent
  );
}
.section-head {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 34px;
}
.section-head h2 {
  font-size: 34px;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.subtext {
  color: var(--muted);
  font-size: 16px;
}

/* ---------- Header ---------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--accent);
  font-size: 20px;
}
.nav ul {
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav a {
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--ink);
  font-size: 14px;
}
.nav a:hover,
.nav a.active {
  background: var(--accentSoft);
  color: var(--accent);
}
.nav-cta {
  margin-left: 6px;
}

/* Buttons */
.btn {
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 12px 16px;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 12px 26px rgba(255, 87, 34, 0.2);
  transition:
    transform 0.16s ease,
    box-shadow 0.16s ease,
    opacity 0.16s ease;
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(255, 87, 34, 0.22);
}
.btn:active {
  transform: translateY(0);
  opacity: 0.95;
}
.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 87, 34, 0.35);
  color: var(--accent);
  box-shadow: none;
}
.btn-outline:hover {
  background: var(--accentSoft);
}
.btn-sm {
  padding: 9px 12px;
  border-radius: 10px;
  font-size: 13px;
}
.btn.btn-sm i {
  margin-left: 6px;
}
.btn.btn-outline i {
  margin-left: 6px;
}

/* ---------- Hero ---------- */
.hero {
  padding-top: 110px;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 36px;
  align-items: center;
  padding: 34px 0 26px;
}
.kicker {
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 6px;
}
.title {
  font-size: 46px;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}
.changing-text {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 14px;
}
#rotateText {
  color: var(--accent);
  border-right: 2px solid var(--accent);
  padding-right: 6px;
}
.desc {
  color: var(--muted);
  max-width: 620px;
  margin-bottom: 18px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 10px;
}
.socials {
  display: flex;
  gap: 10px;
  margin-left: 6px;
}
.socials a {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--surface);
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  box-shadow: var(--shadow2);
  transition:
    transform 0.16s ease,
    background 0.16s ease;
}
.socials a:hover {
  transform: translateY(-2px);
  background: color-mix(in srgb, var(--surface) 85%, transparent);
}
.socials i {
  font-size: 18px;
  color: var(--ink);
}

.hero-meta {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 16px;
  color: color-mix(in srgb, var(--ink) 80%, var(--muted));
}
.hero-meta i {
  color: var(--accent);
  margin-right: 6px;
}

.photo-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 16px;
}
.photo-card img {
  border-radius: 16px;
  height: 420px;
  width: 100%;
  object-fit: cover;
}

/* ---------- Banner Strip ---------- */
.banner-strip {
  padding: 18px 0 34px;
}
.banner-inner {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow2);
  padding: 16px 16px;
}
.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.mini-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 87, 34, 0.08);
  color: var(--ink);
  border: 1px solid rgba(255, 87, 34, 0.18);
  padding: 10px 12px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 13px;
}
.mini-badge i {
  color: var(--accent);
}

/* ---------- Cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 22px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow2);
  padding: 20px;
  transition: transform 0.18s ease;
}
.card:hover {
  transform: translateY(-6px);
}
.card-ic {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(255, 87, 34, 0.1);
  color: var(--accent);
  margin-bottom: 12px;
}
.card h3 {
  font-size: 18px;
  margin-bottom: 8px;
}
.card p {
  color: var(--muted);
}

/* ---------- Projects ---------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.project-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow2);
  overflow: hidden;
  transition:
    transform 0.18s ease,
    opacity 0.18s ease;
}
.project-card:hover {
  transform: translateY(-6px);
}
.project-media {
  height: 190px;
  overflow: hidden;
}
.project-media img {
  height: 100%;
  width: 100%;
  object-fit: cover;
  transform: scale(1);
  transition: transform 0.25s ease;
}
.project-card:hover .project-media img {
  transform: scale(1.04);
}
.project-body {
  padding: 16px;
}
.project-body h3 {
  font-size: 17px;
  margin-bottom: 8px;
  line-height: 1.25;
}
.project-body p {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 12px;
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}
.tags span {
  font-size: 12px;
  font-weight: 700;
  padding: 8px 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 85%, var(--bg));
  border: 1px solid var(--line);
}
.project-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* --- Filter UI --- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin: 10px 0 26px;
}
.filter-btn {
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 82%, var(--bg));
  color: var(--ink);
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 13px;
  cursor: pointer;
  transition:
    transform 0.16s ease,
    background 0.16s ease,
    border-color 0.16s ease;
}
.filter-btn:hover {
  transform: translateY(-2px);
}
.filter-btn.active {
  background: rgba(255, 87, 34, 0.14);
  border-color: rgba(255, 87, 34, 0.3);
  color: var(--ink);
  box-shadow: var(--shadow2);
}
.project-card.is-hidden {
  display: none;
}
.no-projects {
  text-align: center;
  color: var(--muted);
  margin-top: 14px;
  font-weight: 700;
}

/* ===================================================
   SKILLS SECTION — Clean Dark Pill Style
=================================================== */

.skills-wrap {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.skill-row {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* Category Title (like Backend, Database) */
.skill-head{
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
  position: relative;
  padding-bottom: 8px;
}

.skill-head::after{
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 40px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

/* Skill Pills */
.skill-items {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.skill-items span {
  padding: 12px 20px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  background: #111827;
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--ink);
  transition: all 0.25s ease;
  cursor: default;
}

/* Hover Animation */
.skill-items span:hover {
  background: rgba(255, 87, 34, 0.12);
  border-color: rgba(255, 87, 34, 0.35);
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(255, 87, 34, 0.18);
}

/* Responsive */
@media (max-width: 760px) {
  .skills-wrap {
    gap: 30px;
  }
}

/* Research */
.feature-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow2);
  padding: 18px;
  max-width: 920px;
  margin: 0 auto;
}
.feature-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.feature-top h3 {
  font-size: 18px;
  line-height: 1.3;
}
.pill {
  display: inline-flex;
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(255, 87, 34, 0.1);
  border: 1px solid rgba(255, 87, 34, 0.2);
  color: var(--ink);
  font-weight: 800;
  font-size: 12px;
  white-space: nowrap;
}
.feature-list {
  padding-left: 18px;
}
.feature-list li {
  margin: 7px 0;
  color: var(--muted);
}

/* Achievements */
.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.mini-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow2);
  padding: 18px;
}
.mini-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
}
.mini-card i {
  color: var(--accent);
  margin-right: 8px;
}
.mini-card p {
  color: var(--muted);
}

/* Contact */
.contact-card {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow2);
  padding: 18px;
  max-width: 980px;
  margin: 0 auto;
}
.c-info p {
  margin: 10px 0;
  color: color-mix(in srgb, var(--ink) 85%, var(--muted));
}
.c-info i {
  color: var(--accent);
  margin-right: 8px;
}
.c-info a {
  color: var(--ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.c-form input,
.c-form textarea {
  width: 100%;
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 75%, var(--bg));
  margin-bottom: 10px;
  outline: none;
  color: var(--ink);
}
.c-form textarea {
  min-height: 120px;
  resize: vertical;
}

/* Footer */
.footer {
  background: #0f1117;
  color: #cfd4e3;
  padding: 18px 0;
  margin-top: 30px;
}
.foot-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.foot-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.foot-links a {
  color: #cfd4e3;
  text-decoration: underline;
  text-underline-offset: 3px;
  opacity: 0.9;
}
.foot-links a:hover {
  opacity: 1;
}

/* Mobile */
@media (max-width: 980px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-cta {
    justify-content: center;
  }
  .hero-meta {
    justify-content: center;
  }
  .photo-card img {
    height: 340px;
  }
  .project-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .contact-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }
  .project-grid {
    grid-template-columns: 1fr;
  }
  .cards {
    grid-template-columns: 1fr;
  }
  .two-col {
    grid-template-columns: 1fr;
  }
  .skill-row {
    grid-template-columns: 1fr;
  }
  .skill-head {
    width: fit-content;
    margin: 0 auto;
  }
}

/* Resume Page Styles */
.resume {
  padding-top: 110px;
  padding-bottom: 60px;
}
.resume-hero {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow2);
  border-radius: 18px;
  padding: 18px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 16px;
  align-items: start;
  margin-top: 18px;
}
.resume-name {
  font-size: 30px;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.resume-bio {
  color: var(--muted);
  font-weight: 700;
  margin-bottom: 12px;
}
.resume-contacts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}
.resume-contacts a,
.resume-contacts span {
  color: var(--ink);
  opacity: 0.95;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}
.resume-contacts i {
  color: var(--accent);
}
.resume-hero-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: stretch;
}
.resume-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 18px;
  margin-top: 18px;
}
.resume-card {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow2);
  border-radius: 18px;
  padding: 18px;
}
.resume-card h2 {
  font-size: 16px;
  margin-bottom: 10px;
  letter-spacing: 0.01em;
}
.resume-sub {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
  font-weight: 800;
}
.resume-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}
.resume-tags span {
  background: color-mix(in srgb, var(--surface) 85%, var(--bg));
  border: 1px solid var(--line);
  padding: 9px 11px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 12px;
}
.resume-item {
  padding: 12px 0;
  border-top: 1px dashed var(--line);
}
.resume-item:first-of-type {
  border-top: none;
  padding-top: 0;
}
.resume-item-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}
.resume-item h3 {
  font-size: 14px;
  margin-bottom: 6px;
}
.resume-item ul {
  padding-left: 18px;
  color: var(--muted);
}
.resume-item li {
  margin: 6px 0;
}
.resume-link {
  font-weight: 800;
  color: var(--accent);
  white-space: nowrap;
}
.resume-list {
  padding-left: 18px;
  color: var(--muted);
}
.resume-list li {
  margin: 8px 0;
}
.muted {
  color: var(--muted);
}

.banner-strip {
  padding: 18px 0 34px;
}
.banner-inner {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow2);
  padding: 16px 16px;
}
.resume-title {
  background: rgba(255, 255, 255, 0.08);
  color: var(--ink);
  border: 1px solid rgba(255, 87, 34, 0.18);
  border-radius: 14px;
  padding: 8px;
  font-weight: 700;
  font-size: 13px;
  color: var(--accent);
}

/* responsive */
@media (max-width: 980px) {
  .resume-hero {
    grid-template-columns: 1fr;
  }
  .resume-grid {
    grid-template-columns: 1fr;
  }
  .resume-hero-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

/* print */
@media print {
  @page {
    size: A4;
    margin: 10mm;
  }

  body {
    background: #fff !important;
    color: #000 !important;
    font-size: 10.5px !important;
    line-height: 1.2 !important;
  }
  .header,
  .footer,
  .resume-hero-actions {
    display: none !important;
  }
  .resume {
    padding: 0 !important;
    zoom: 1;
  }
  .container {
    max-width: 100% !important;
    padding: 0 !important;
  }

  .resume-grid {
    display: grid !important;
    grid-template-columns: 1.2fr 0.8fr !important;
    gap: 5px !important;
    margin-top: 5px !important;
  }

  .resume-hero {
    display: grid !important;
    grid-template-columns: 1.2fr 0.8fr !important;
    gap: 8px !important;
    padding: 5px !important;
    margin: 0 !important;
    box-shadow: none !important;
    border: 1px solid #ccc !important;
    border-radius: 6px !important;
  }

  .resume-card {
    padding: 5px !important;
    margin: 0 !important;
    box-shadow: none !important;
    border: 1px solid #ccc !important;
    border-radius: 6px !important;
  }

  .resume-item {
    padding: 3px 0 !important;
  }
  .resume-item li,
  .resume-list li {
    margin: 1px 0 !important;
  }

  .resume-tags {
    gap: 3px !important;
    margin-top: 3px !important;
  }
  .resume-tags span {
    font-size: 7.4px !important;
    padding: 2px 5px !important;
    border: 1px solid #ccc !important;
    background: #f2f2f2 !important;
  }

  .resume-card,
  .resume-hero {
    break-inside: avoid;
    page-break-inside: avoid;
  }
}