:root {
  color-scheme: dark;
  --bg: #0b1120;
  --bg-soft: #111827;
  --panel: rgba(15, 23, 42, 0.76);
  --panel-strong: rgba(17, 24, 39, 0.92);
  --line: rgba(148, 163, 184, 0.2);
  --text: #f8fafc;
  --muted: #cbd5e1;
  --muted-2: #94a3b8;
  --cyan: #38bdf8;
  --teal: #06b6d4;
  --violet: #8b5cf6;
  --green: #22c55e;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.36);
  --radius: 8px;
  --max: 1180px;
  --body-bg:
    radial-gradient(circle at 12% 12%, rgba(56, 189, 248, 0.16), transparent 30%),
    radial-gradient(circle at 88% 8%, rgba(139, 92, 246, 0.18), transparent 30%),
    linear-gradient(180deg, #0b1120 0%, #0f172a 48%, #111827 100%);
  --grid-line: rgba(148, 163, 184, 0.035);
  --header-bg: rgba(11, 17, 32, 0.78);
  --header-solid: rgba(11, 17, 32, 0.92);
  --field-bg: rgba(2, 6, 23, 0.56);
  --visual-bg:
    linear-gradient(145deg, rgba(56, 189, 248, 0.1), transparent),
    rgba(15, 23, 42, 0.84);
  --node-bg: rgba(2, 6, 23, 0.72);
  --brand-text: #06111f;
  --brand-mark-bg:
    radial-gradient(circle at 58% 44%, rgba(88, 229, 255, 0.28), transparent 64%),
    radial-gradient(circle at 40% 64%, rgba(121, 133, 255, 0.24), transparent 52%),
    linear-gradient(145deg, rgba(19, 31, 58, 0.98), rgba(13, 24, 44, 0.94));
  --brand-mark-border: rgba(120, 232, 255, 0.28);
  --brand-mark-shadow: 0 14px 34px rgba(4, 10, 24, 0.28);
  --button-text: #06111f;
}

[data-theme="light"] {
  color-scheme: light;
  --bg: #f8fafc;
  --bg-soft: #eef6fb;
  --panel: rgba(255, 255, 255, 0.82);
  --panel-strong: rgba(255, 255, 255, 0.94);
  --line: rgba(15, 23, 42, 0.12);
  --text: #0f172a;
  --muted: #334155;
  --muted-2: #64748b;
  --cyan: #0284c7;
  --teal: #0891b2;
  --violet: #7c3aed;
  --green: #16a34a;
  --shadow: 0 24px 70px rgba(15, 23, 42, 0.12);
  --body-bg:
    radial-gradient(circle at 10% 10%, rgba(253, 224, 71, 0.28), transparent 26%),
    radial-gradient(circle at 82% 6%, rgba(14, 165, 233, 0.16), transparent 30%),
    radial-gradient(circle at 88% 38%, rgba(124, 58, 237, 0.1), transparent 28%),
    linear-gradient(180deg, #fffdf4 0%, #eef8ff 48%, #f7fbff 100%);
  --grid-line: rgba(15, 23, 42, 0.045);
  --header-bg: rgba(255, 255, 255, 0.78);
  --header-solid: rgba(255, 255, 255, 0.94);
  --field-bg: rgba(255, 255, 255, 0.72);
  --visual-bg:
    linear-gradient(145deg, rgba(253, 224, 71, 0.18), rgba(14, 165, 233, 0.12) 48%, transparent),
    rgba(255, 255, 255, 0.78);
  --node-bg: rgba(255, 255, 255, 0.84);
  --brand-text: #06111f;
  --brand-mark-bg:
    radial-gradient(circle at 58% 44%, rgba(109, 234, 255, 0.22), transparent 62%),
    radial-gradient(circle at 38% 66%, rgba(111, 129, 255, 0.18), transparent 52%),
    linear-gradient(145deg, rgba(247, 251, 255, 0.98), rgba(232, 245, 250, 0.94));
  --brand-mark-border: rgba(120, 208, 232, 0.28);
  --brand-mark-shadow: 0 14px 30px rgba(56, 189, 248, 0.14);
  --button-text: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", Arial, sans-serif;
  color: var(--text);
  background: var(--body-bg);
  line-height: 1.6;
  transition: color 0.2s ease, background 0.2s ease;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 78%);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(var(--max), calc(100% - 32px));
  margin: 16px auto 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--header-bg);
  backdrop-filter: blur(18px);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.site-header.is-scrolled {
  border-color: rgba(56, 189, 248, 0.34);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.28);
  background: var(--header-solid);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
  white-space: nowrap;
  order: 1;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 56px;
  height: 44px;
  padding: 5px;
  overflow: hidden;
  border: 1px solid var(--brand-mark-border);
  border-radius: 14px;
  background: var(--brand-mark-bg);
  box-shadow: var(--brand-mark-shadow);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  transform: scale(1.05);
}

.brand-name {
  color: var(--text);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  order: 2;
  margin-left: auto;
}

.site-nav a {
  padding: 10px 12px;
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.94rem;
  transition: color 0.2s ease, background 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
  background: rgba(148, 163, 184, 0.12);
}

.site-nav .nav-resume {
  color: var(--text);
  background: rgba(56, 189, 248, 0.14);
  border: 1px solid rgba(56, 189, 248, 0.28);
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  margin-left: 6px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  background: rgba(148, 163, 184, 0.08);
  font: inherit;
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
  order: 3;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  color: var(--text);
  background: rgba(148, 163, 184, 0.14);
}

.theme-toggle-track {
  position: relative;
  width: 38px;
  height: 20px;
  border-radius: 999px;
  background: rgba(56, 189, 248, 0.2);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.theme-toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--teal));
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.34);
  transition: transform 0.2s ease;
}

[data-theme="dark"] .theme-toggle-thumb {
  transform: translateX(18px);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(148, 163, 184, 0.08);
  color: var(--text);
  cursor: pointer;
  order: 4;
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  border-color: rgba(56, 189, 248, 0.44);
  background: rgba(56, 189, 248, 0.12);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.14);
  outline: none;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: var(--text);
}

.section-pad {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 94px 0;
}

.compact-top {
  padding-top: 20px;
}

.hero {
  min-height: calc(100vh - 76px);
  display: grid;
  align-items: center;
}

.hero-grid,
.about-grid,
.contact-grid {
  display: grid;
  grid-template-columns: 1.03fr 0.97fr;
  gap: 34px;
  align-items: center;
}

.eyebrow,
.card-kicker {
  margin: 0 0 12px;
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 20px;
  font-size: clamp(2.35rem, 5.45vw, 5.15rem);
  line-height: 1.01;
  letter-spacing: 0;
}

.page-hero h1 {
  max-width: 980px;
}

h2 {
  margin-bottom: 16px;
  font-size: clamp(2rem, 4vw, 3.55rem);
  line-height: 1.04;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.16rem;
  line-height: 1.25;
}

.hero-text,
.section-copy,
.section-heading p:not(.eyebrow),
.project-body p,
.detail-content p,
.timeline-card p,
.glass-card p {
  color: var(--muted);
}

.hero-text {
  max-width: 720px;
  font-size: 1.16rem;
}

.hero-actions,
.section-cta,
.social-row,
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

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

.btn-primary {
  color: var(--button-text);
  background: linear-gradient(135deg, var(--cyan), var(--teal));
}

.btn-secondary,
.filter-btn {
  color: var(--text);
  background: rgba(148, 163, 184, 0.1);
  border-color: var(--line);
}

.filter-btn {
  min-height: 42px;
  padding: 10px 14px;
  border-radius: var(--radius);
  font-weight: 800;
}

.filter-btn.active,
.filter-btn:hover {
  border-color: rgba(56, 189, 248, 0.56);
  background: rgba(56, 189, 248, 0.14);
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 30px;
}

.metric-row div,
.glass-card,
.project-card,
.timeline-card,
.project-detail,
.contact-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.metric-row div {
  padding: 16px;
}

.metric-row strong,
.metric-row span {
  display: block;
}

.metric-row span {
  color: var(--muted-2);
  font-size: 0.9rem;
}

.visual-shell {
  position: relative;
  min-height: 500px;
  overflow: hidden;
  border: 1px solid rgba(56, 189, 248, 0.26);
  border-radius: var(--radius);
  background: var(--visual-bg);
  box-shadow: var(--shadow);
}

.visual-header {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 14px;
  border-bottom: 1px solid var(--line);
}

.visual-header span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--cyan);
}

.visual-header span:nth-child(2) {
  background: var(--violet);
}

.visual-header span:nth-child(3) {
  background: var(--green);
}

.visual-header p {
  margin: 0 0 0 8px;
  color: var(--muted-2);
  font-size: 0.88rem;
}

.pipeline {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  padding: 48px 26px;
}

.pipeline::before {
  content: "";
  position: absolute;
  inset: 50% 42px auto;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--violet), transparent);
}

.node {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  min-height: 92px;
  border: 1px solid rgba(148, 163, 184, 0.24);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--node-bg);
  font-weight: 800;
  animation: floatNode 5s ease-in-out infinite;
}

.node:nth-child(even) {
  animation-delay: -1.5s;
}

.node-large {
  grid-column: span 2;
}

.node-accent {
  border-color: rgba(56, 189, 248, 0.48);
  background: rgba(6, 182, 212, 0.16);
}

.section-heading {
  max-width: 820px;
  margin-bottom: 34px;
}

.glass-card,
.timeline-card,
.contact-form {
  padding: 24px;
}

.about-card {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  align-items: center;
}

.profile-photo {
  width: 180px;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid rgba(56, 189, 248, 0.24);
}

.education-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.education-meta span {
  padding: 8px 10px;
  border-radius: var(--radius);
  color: var(--text);
  background: rgba(56, 189, 248, 0.12);
}

.skill-grid,
.project-grid,
.architecture-grid,
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

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

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-list span {
  padding: 7px 9px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: var(--radius);
  color: var(--muted);
  background: rgba(148, 163, 184, 0.08);
  font-size: 0.88rem;
}

.tag-list.compact span {
  font-size: 0.8rem;
}

.project-card {
  overflow: hidden;
}

.project-card-link {
  display: block;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.project-card-link:hover,
.project-card-link:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(248, 113, 113, 0.3);
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.12);
  outline: none;
}

.project-visual,
.detail-media {
  min-height: 210px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  padding: 22px;
  background: rgba(15, 23, 42, 0.08);
}

.workflow-media {
  align-content: center;
  grid-template-columns: 1fr;
  gap: 12px;
}

.project-visual span,
.detail-media span {
  display: grid;
  place-items: center;
  min-height: 68px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--node-bg);
  font-weight: 800;
}

.workflow-media span {
  position: relative;
  min-height: 54px;
  justify-content: start;
  padding: 0 18px 0 46px;
  text-align: left;
}

.workflow-media span::before {
  content: "";
  position: absolute;
  left: 18px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 6px rgba(56, 189, 248, 0.12);
}

.workflow-media span:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 23px;
  top: calc(100% - 2px);
  width: 2px;
  height: 16px;
  background: rgba(56, 189, 248, 0.34);
}

.autocat-visual {
  background:
    linear-gradient(135deg, rgba(56, 189, 248, 0.16), transparent),
    rgba(2, 6, 23, 0.42);
}

.paperbrief-visual {
  background:
    linear-gradient(135deg, rgba(139, 92, 246, 0.18), transparent),
    rgba(2, 6, 23, 0.42);
}

.seo-visual {
  background:
    linear-gradient(135deg, rgba(34, 197, 94, 0.16), transparent),
    rgba(2, 6, 23, 0.42);
}

.budget-visual {
  background:
    linear-gradient(135deg, rgba(248, 113, 113, 0.14), rgba(56, 189, 248, 0.1)),
    rgba(2, 6, 23, 0.42);
}

.dashboard-visual span {
  min-height: 54px;
  background: linear-gradient(180deg, rgba(56, 189, 248, 0.55), rgba(56, 189, 248, 0.08));
}

.dashboard-visual span:nth-child(2) {
  background: linear-gradient(180deg, rgba(139, 92, 246, 0.54), rgba(139, 92, 246, 0.08));
}

.dashboard-visual span:nth-child(3) {
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.54), rgba(6, 182, 212, 0.08));
}

.dashboard-visual span:nth-child(4) {
  background: linear-gradient(180deg, rgba(34, 197, 94, 0.48), rgba(34, 197, 94, 0.08));
}

.opengl-visual {
  background:
    linear-gradient(135deg, rgba(56, 189, 248, 0.13), rgba(139, 92, 246, 0.13)),
    rgba(2, 6, 23, 0.42);
}

.project-body {
  padding: 22px;
}

.project-live-row {
  margin-bottom: 12px;
}

.project-live-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  color: #991b1b;
  background: rgba(252, 165, 165, 0.22);
  border: 1px solid rgba(248, 113, 113, 0.28);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.project-live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #ef4444;
  box-shadow: 0 0 0 5px rgba(248, 113, 113, 0.16);
}

.project-detail-live {
  border-color: rgba(248, 113, 113, 0.24);
}

.project-detail-link {
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.project-detail-link:hover,
.project-detail-link:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(248, 113, 113, 0.34);
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.12);
  outline: none;
}

.project-actions {
  margin-top: 18px;
}

.timeline-list {
  display: grid;
  gap: 16px;
}

.timeline-card {
  position: relative;
  padding-left: 72px;
}

.timeline-card::before {
  content: "";
  position: absolute;
  left: 30px;
  top: 28px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 8px rgba(56, 189, 248, 0.12);
}

.timeline-card span {
  color: var(--cyan);
  font-weight: 800;
  font-size: 0.85rem;
}

.architecture-section {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.workflow-line {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.workflow-line span {
  position: relative;
  padding: 8px 10px;
  border-radius: var(--radius);
  color: var(--text);
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.2);
  font-size: 0.86rem;
}

.cert-feature {
  position: relative;
  overflow: hidden;
  border-color: rgba(56, 189, 248, 0.32);
}

.cert-feature::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
}

.cert-grid .glass-card strong {
  display: inline-flex;
  margin-top: 10px;
  padding: 8px 10px;
  border: 1px solid rgba(56, 189, 248, 0.24);
  border-radius: var(--radius);
  color: var(--text);
  background: rgba(56, 189, 248, 0.12);
  font-size: 0.9rem;
}

.social-row a {
  display: inline-flex;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  background: rgba(148, 163, 184, 0.08);
}

.contact-form {
  display: grid;
  gap: 14px;
}

.contact-form label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-weight: 700;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 13px;
  color: var(--text);
  background: var(--field-bg);
  font: inherit;
}

.contact-form textarea {
  resize: vertical;
}

.page-hero {
  padding-bottom: 32px;
}

.project-detail-list {
  display: grid;
  gap: 22px;
}

.project-detail {
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 0;
  overflow: hidden;
}

.detail-media {
  min-height: 100%;
}

.detail-content {
  padding: 28px;
}

.feature-columns {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  gap: 20px;
  margin-top: 18px;
}

.feature-columns ul {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}

.budget-demo-page {
  padding-bottom: 72px;
}

.budget-top-grid,
.budget-results-grid {
  display: grid;
  gap: 22px;
}

.budget-top-grid {
  grid-template-columns: minmax(0, 1.06fr) minmax(320px, 0.94fr);
  align-items: start;
}

.budget-side-grid {
  display: grid;
  gap: 18px;
}

.budget-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  padding: 24px;
}

.budget-panel-heading {
  margin-bottom: 22px;
}

.budget-panel-heading h2,
.budget-panel h3 {
  margin-bottom: 10px;
}

.budget-field-group {
  display: grid;
  gap: 10px;
  margin-bottom: 18px;
}

.budget-choice-grid {
  display: grid;
  gap: 12px;
}

.budget-choice {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(148, 163, 184, 0.06);
  cursor: pointer;
}

.budget-choice input {
  margin: 3px 0 0;
  accent-color: var(--cyan);
}

.budget-choice strong,
.budget-choice small {
  display: block;
}

.budget-choice strong {
  color: var(--text);
  margin-bottom: 4px;
}

.budget-choice small {
  color: var(--muted);
  line-height: 1.45;
}

.budget-choice-inline {
  margin-bottom: 18px;
}

.budget-row-header {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.budget-label {
  color: var(--text);
  font-weight: 700;
}

.budget-input-wrap {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 10px;
  min-height: 54px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--field-bg);
}

.budget-input-wrap-strong {
  border-color: rgba(56, 189, 248, 0.3);
  box-shadow: inset 0 0 0 1px rgba(56, 189, 248, 0.08);
}

.budget-prefix {
  color: var(--muted-2);
  font-weight: 700;
}

.budget-input {
  width: 100%;
  min-height: 52px;
  padding: 0;
  border: 0;
  outline: none;
  color: var(--text);
  background: transparent;
  font: inherit;
}

.budget-input::placeholder {
  color: var(--muted-2);
}

.budget-row-list {
  display: grid;
  gap: 12px;
}

.budget-row {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.85fr) 50px;
  gap: 12px;
}

.budget-remove-btn {
  min-height: 54px;
  min-width: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(248, 113, 113, 0.24);
  border-radius: var(--radius);
  color: #991b1b;
  background: rgba(252, 165, 165, 0.14);
  font: inherit;
  font-size: 1rem;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
}

.budget-remove-btn:hover,
.budget-remove-btn:focus-visible {
  background: rgba(252, 165, 165, 0.28);
}

.budget-action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.compact-actions .btn {
  min-width: 176px;
}

.budget-inline-btn {
  min-height: 42px;
  padding: 10px 14px;
}

.budget-metric-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.budget-metric-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.budget-metric-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted-2);
  font-size: 0.88rem;
  font-weight: 700;
}

.budget-metric-card strong {
  font-size: clamp(1.28rem, 3vw, 2.1rem);
  line-height: 1.05;
}

.budget-summary-note {
  margin-bottom: 16px;
  color: var(--muted);
}

.budget-summary-note p,
.budget-narrative p {
  margin-bottom: 12px;
}

.budget-guidance-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.budget-guidance-chips span,
.budget-export-note {
  padding: 8px 10px;
  border: 1px solid rgba(56, 189, 248, 0.18);
  border-radius: var(--radius);
  background: rgba(56, 189, 248, 0.1);
  color: var(--muted);
  font-size: 0.88rem;
}

.budget-results-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 22px;
}

.budget-table-wrap {
  overflow-x: auto;
}

.budget-table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.budget-table th,
.budget-table td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.budget-table th {
  color: var(--muted-2);
  font-weight: 700;
  background: rgba(148, 163, 184, 0.08);
}

.budget-table tr:last-child td {
  border-bottom: 0;
}

.chart-shell {
  position: relative;
  min-height: 300px;
}

.budget-narrative {
  color: var(--muted);
}

.budget-export-note {
  display: inline-flex;
  margin-top: 16px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 42px;
  color: var(--muted-2);
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
}

.back-to-top-wrap {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto 36px;
  display: flex;
  justify-content: center;
}

.back-to-top-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: rgba(148, 163, 184, 0.08);
  font-weight: 700;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

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

[data-category].is-hidden {
  display: none;
}

@keyframes floatNode {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@media (max-width: 980px) {
  .hero-grid,
  .about-grid,
  .contact-grid,
  .project-detail {
    grid-template-columns: 1fr;
  }

  .budget-top-grid,
  .budget-results-grid {
    grid-template-columns: 1fr;
  }

  .visual-shell {
    min-height: 420px;
  }

  .skill-grid,
  .project-grid,
  .architecture-grid,
  .cert-grid {
    grid-template-columns: 1fr 1fr;
  }

}

@media (max-width: 760px) {
  .site-header {
    align-items: center;
    width: calc(100% - 24px);
    max-width: var(--max);
    margin-top: 10px;
    padding: 8px;
    gap: 8px;
    justify-content: flex-start;
  }

  .brand {
    order: 1;
  }

  .theme-toggle {
    order: 2;
    margin-left: auto;
  }

  .nav-toggle {
    display: block;
    flex: 0 0 38px;
    width: 38px;
    height: 38px;
    order: 3;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--header-solid);
    box-shadow: var(--shadow);
    order: 4;
    margin-left: 0;
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    justify-content: center;
    padding: 12px;
    text-align: center;
  }

  .site-nav .nav-resume {
    width: 100%;
    justify-content: center;
  }

  .theme-toggle {
    min-height: 36px;
    padding: 6px 8px;
    font-size: 0.82rem;
    flex: 0 0 auto;
  }

  .section-pad {
    width: min(100% - 24px, var(--max));
    padding: 58px 0;
  }

  .hero {
    min-height: auto;
  }

  h1 {
    font-size: clamp(2.28rem, 12vw, 3.55rem);
    line-height: 1;
  }

  h2 {
    font-size: clamp(1.8rem, 8vw, 2.65rem);
    line-height: 1.08;
  }

  .hero-text {
    font-size: 1rem;
  }

  .hero-actions {
    align-items: stretch;
  }

  .hero-actions .btn {
    flex: 1 1 180px;
  }

  .metric-row,
  .skill-grid,
  .project-grid,
  .architecture-grid,
  .cert-grid,
  .feature-columns {
    grid-template-columns: 1fr;
  }

  .budget-metric-grid {
    grid-template-columns: 1fr;
  }

  .budget-row {
    grid-template-columns: minmax(0, 1fr) 52px;
    align-items: end;
  }

  .budget-row > :first-child {
    grid-column: 1 / -1;
  }

  .budget-remove-btn {
    min-height: 52px;
    min-width: 52px;
    border-radius: 14px;
  }

  .budget-action-row .btn,
  .budget-inline-btn,
  .compact-actions .btn {
    width: 100%;
  }

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

  .profile-photo {
    width: 150px;
  }

  .visual-shell {
    min-height: auto;
  }

  .visual-header {
    padding: 12px;
  }

  .visual-header p {
    font-size: 0.8rem;
  }

  .pipeline {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    padding: 22px 16px;
  }

  .node-large {
    grid-column: span 1;
  }

  .node {
    min-height: 72px;
    padding: 10px;
    font-size: 0.92rem;
  }

  .project-visual,
  .detail-media {
    min-height: 190px;
  }

  .detail-content,
  .project-body,
  .glass-card,
  .timeline-card,
  .contact-form {
    padding: 20px;
  }

  .workflow-line {
    gap: 7px;
  }

  .workflow-line span,
  .tag-list span {
    font-size: 0.8rem;
  }

  .timeline-card {
    padding-left: 20px;
  }

  .timeline-card::before {
    display: none;
  }

  .site-footer {
    flex-direction: column;
    padding-bottom: 22px;
  }

  .back-to-top-wrap {
    width: min(100% - 24px, var(--max));
    margin-bottom: 28px;
  }
}

@media (max-width: 430px) {
  .brand-name {
    display: none;
  }

  .brand-mark {
    width: 44px;
    height: 34px;
    padding: 4px;
  }

  .theme-toggle-label {
    display: none;
  }

  .theme-toggle {
    gap: 0;
    min-height: 32px;
    padding: 5px;
  }

  .theme-toggle-track {
    width: 31px;
    height: 18px;
  }

  .theme-toggle-thumb {
    top: 3px;
    left: 3px;
    width: 10px;
    height: 10px;
  }

  [data-theme="dark"] .theme-toggle-thumb {
    transform: translateX(13px);
  }

  .nav-toggle {
    flex-basis: 34px;
    width: 34px;
    height: 34px;
  }

  .nav-toggle span {
    width: 16px;
  }

  .budget-panel,
  .detail-content,
  .project-body,
  .glass-card,
  .timeline-card,
  .contact-form {
    padding: 18px;
  }

  .budget-panel h3,
  .budget-panel-heading h2 {
    line-height: 1.14;
  }

  .chart-shell {
    min-height: 260px;
  }

  .hero-actions .btn,
  .contact-form .btn {
    width: 100%;
  }

  .metric-row div {
    padding: 14px;
  }

  .pipeline {
    grid-template-columns: 1fr;
  }

  .pipeline::before {
    inset: 34px auto 34px 30px;
    width: 2px;
    height: auto;
    background: linear-gradient(180deg, var(--cyan), var(--violet));
  }

  .node {
    justify-content: start;
    min-height: 54px;
    padding-left: 48px;
    text-align: left;
    animation: none;
  }

  .node::before {
    content: "";
    position: absolute;
    left: 22px;
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 0 6px rgba(56, 189, 248, 0.12);
  }

  .detail-media {
    min-height: auto;
    padding: 16px;
  }

  .workflow-media span {
    min-height: 48px;
    padding-right: 12px;
    font-size: 0.86rem;
  }
}