/* ============================================
   TILAKMAN KARKI PORTFOLIO - PREMIUM BASE STYLES
   Apple-inspired minimal system with dual theme
   ============================================ */

:root {
  color-scheme: dark;
  --font-family: "Geist", "Inter", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --color-bg: #07090d;
  --color-bg-soft: #0d1118;
  --color-surface: rgba(18, 22, 32, 0.78);
  --color-surface-solid: #131926;
  --color-surface-elevated: rgba(25, 33, 48, 0.88);
  --color-border: rgba(255, 255, 255, 0.11);
  --color-border-strong: rgba(255, 255, 255, 0.2);

  --color-text-primary: #eef2ff;
  --color-text-secondary: #b4c0d7;
  --color-text-muted: #8291ad;

  --color-accent: #8da9ff;
  --color-accent-strong: #6f92ff;
  --color-accent-soft: rgba(141, 169, 255, 0.2);
  --color-info: #67d9ff;

  --background: var(--color-bg);
  --background-secondary: var(--color-bg-soft);
  --surface: var(--color-surface);
  --surface-secondary: var(--color-surface-elevated);
  --card: var(--color-surface-solid);
  --foreground: var(--color-text-primary);
  --muted-foreground: var(--color-text-secondary);
  --primary: var(--color-accent);
  --primary-hover: var(--color-accent-strong);
  --muted: var(--color-text-muted);
  --border: var(--color-border);
  --input: var(--color-surface-solid);
  --ring: var(--color-accent-soft);
  --info: var(--color-info);
  --success: #67d391;
  --warning: #f0c674;
  --error: #ff8795;

  --gradient-main: linear-gradient(135deg, #6f92ff 0%, #9cb5ff 52%, #d6dfff 100%);
  --gradient-surface: linear-gradient(145deg, rgba(139, 168, 255, 0.15), rgba(139, 168, 255, 0.05));
  --gradient-background: radial-gradient(circle at 15% -5%, rgba(111, 146, 255, 0.22), transparent 45%),
    radial-gradient(circle at 80% 0%, rgba(115, 129, 160, 0.17), transparent 42%),
    linear-gradient(180deg, #080c12 0%, #06080d 100%);

  --shadow-sm: 0 8px 20px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 14px 34px rgba(0, 0, 0, 0.32);
  --shadow-lg: 0 20px 56px rgba(0, 0, 0, 0.42);
  --shadow-glow: 0 0 42px rgba(141, 169, 255, 0.2);

  --radius-sm: 0.7rem;
  --radius-md: 1rem;
  --radius-lg: 1.4rem;
  --radius-xl: 2rem;
  --radius-pill: 999px;

  --transition-fast: 190ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-base: 360ms cubic-bezier(0.22, 1, 0.36, 1);
  --transition-slow: 520ms cubic-bezier(0.22, 1, 0.36, 1);

  --font-size-xs: .75rem;
  --font-size-sm: .875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --radius-full: var(--radius-pill);
  --gradient-primary: var(--gradient-main);
  --color-accent-light: var(--color-accent);
}

[data-theme="light"] {
  color-scheme: light;
  --color-bg: #f4f7ff;
  --color-bg-soft: #edf3ff;
  --color-surface: rgba(255, 255, 255, 0.82);
  --color-surface-solid: #ffffff;
  --color-surface-elevated: rgba(255, 255, 255, 0.96);
  --color-border: rgba(79, 124, 255, 0.22);
  --color-border-strong: rgba(79, 124, 255, 0.36);

  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #64748b;

  --color-accent: #4f7cff;
  --color-accent-strong: #3d68e6;
  --color-accent-soft: rgba(79, 124, 255, 0.12);
  --color-info: #4f7cff;

  --gradient-main: linear-gradient(130deg, #4f7cff 0%, #5f8bff 46%, #7ca2ff 100%);
  --gradient-surface: linear-gradient(150deg, rgba(79, 124, 255, 0.14), rgba(79, 124, 255, 0.04));
  --gradient-background: linear-gradient(180deg, #f6f9ff 0%, #edf3ff 100%);
  --gradient-light-blue: linear-gradient(180deg, rgba(184, 209, 255, 0.76) 0%, rgba(148, 187, 255, 0.92) 52%, rgba(126, 171, 248, 0.95) 100%);

  --shadow-sm: 0 10px 24px rgba(31, 52, 92, 0.12);
  --shadow-md: 0 16px 36px rgba(31, 52, 92, 0.15);
  --shadow-lg: 0 22px 50px rgba(31, 52, 92, 0.18);
  --shadow-glow: 0 0 42px rgba(79, 124, 255, 0.18);

  --highlight-blue-bg: #d8f1ef;
  --highlight-blue-bg-strong: #c3e8e4;
  --highlight-blue-border: #7cbab4;
  --highlight-blue-border-strong: #5da7a1;
  --highlight-blue-text: #0f4f49;
  --highlight-blue-text-strong: #0b443f;
  --highlight-blue-grad-start: #0f766e;
  --highlight-blue-grad-end: #1d8f86;

  --highlight-green-bg: #f7ecd3;
  --highlight-green-border: #c7a46d;
  --highlight-green-text: #7a5725;
}

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

html {
  scroll-behavior: auto;
  overflow-x: clip;
  max-width: 100%;
}

body {
  font-family: var(--font-family);
  line-height: 1.65;
  color: var(--color-text-primary);
  background: var(--gradient-background);
  min-height: 100vh;
  overflow-x: clip;
  max-width: 100%;
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

@supports not (overflow: clip) {
  html,
  body {
    overflow-x: hidden;
  }
}

::selection {
  background: var(--color-accent);
  color: #fff;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--color-text-primary);
  letter-spacing: -0.03em;
  line-height: 1.12;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 750;
}

h3 {
  font-size: clamp(1.2rem, 2.2vw, 1.8rem);
  font-weight: 700;
}

p,
li {
  color: var(--color-text-secondary);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

a:hover {
  color: var(--color-accent-strong);
}

:where(a, button, input, select, textarea):focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.container {
  width: min(1280px, 100% - 3rem);
  margin-inline: auto;
}

.section-header {
  text-align: center;
  margin-bottom: clamp(2rem, 5vw, 4.5rem);
}

.section-title {
  font-size: clamp(1.85rem, 4.2vw, 3.2rem);
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: 1rem;
}

.section-subtitle {
  max-width: 720px;
  margin-inline: auto;
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--color-text-secondary);
}

.top-navbar {
  position: sticky;
  top: 0;
  z-index: 1200;
  margin: 0.85rem auto 0;
  width: min(1260px, calc(100% - 1.6rem));
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  background: color-mix(in oklab, var(--color-surface) 82%, transparent);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.top-navbar.scrolled {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

html:not([data-theme="light"]) .top-navbar {
  border-color: rgba(136, 167, 250, 0.62);
  background:
    radial-gradient(120% 140% at 50% -40%, rgba(110, 147, 255, 0.2), transparent 52%),
    linear-gradient(120deg, rgba(17, 29, 58, 0.94), rgba(28, 40, 72, 0.92)),
    color-mix(in oklab, var(--color-surface) 82%, transparent);
  box-shadow: 0 16px 34px rgba(6, 12, 28, 0.58), 0 0 0 1px rgba(136, 167, 250, 0.26), 0 0 44px rgba(111, 146, 255, 0.32);
}

html:not([data-theme="light"]) .top-navbar.scrolled {
  border-color: rgba(155, 183, 255, 0.72);
  box-shadow: 0 18px 38px rgba(8, 13, 30, 0.66), 0 0 0 1px rgba(155, 183, 255, 0.34), 0 0 52px rgba(124, 159, 255, 0.4);
}

html:not([data-theme="light"]) .nav-links {
  background: rgba(8, 13, 27, 0.7);
  border-color: rgba(143, 171, 245, 0.42);
}

html:not([data-theme="light"]) .logo {
  background: linear-gradient(135deg, rgba(246, 251, 255, 0.96) 0%, rgba(230, 241, 255, 0.94) 100%);
  border-color: rgba(174, 203, 255, 0.72);
  box-shadow: 0 12px 26px rgba(6, 12, 28, 0.52), 0 0 0 1px rgba(182, 208, 255, 0.22);
}

html:not([data-theme="light"]) .nav-name {
  color: #102544;
}

.nav-container {
  min-height: 72px;
  padding: 0.8rem 1.25rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  width: clamp(86px, 9.2vw, 112px);
  height: clamp(38px, 3.7vw, 46px);
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: color-mix(in oklab, var(--color-surface-solid) 82%, transparent);
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.12);
  line-height: 0;
  flex-shrink: 0;
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.logo:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.16);
}

.logo-name {
  width: clamp(150px, 15vw, 190px);
}

.nav-name {
  color: var(--color-text-primary);
  font-size: clamp(0.72rem, 0.95vw, 0.9rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1;
  white-space: nowrap;
}

.logo-last:last-child {
  color: inherit;
}

.nav-links {
  list-style: none;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.35rem;
  background: color-mix(in oklab, var(--color-surface-solid) 70%, transparent);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 0.35rem;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.nav-links a {
  color: var(--color-text-secondary);
  font-size: 0.86rem;
  font-weight: 600;
  padding: 0.58rem 0.95rem;
  border-radius: var(--radius-pill);
  transition: color var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text-primary);
  background: var(--gradient-surface);
  transform: translateY(-1px);
  box-shadow: inset 0 0 0 1px var(--color-border);
}

.nav-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.26rem;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: 0.8rem;
  background: color-mix(in oklab, var(--color-surface-solid) 72%, transparent);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.menu-toggle:hover {
  transform: translateY(-1px);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-sm);
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.btn-cv {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  border: 1px solid var(--color-border);
  border-radius: 0.85rem;
  padding: 0.62rem 0.92rem;
  background: color-mix(in oklab, var(--color-surface-solid) 78%, transparent);
  color: var(--color-text-primary);
  font-size: 0.84rem;
  font-weight: 700;
  line-height: 1.2;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.btn-cv:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm), var(--shadow-glow);
}

.footer-resume-btn {
  margin-top: 0.25rem;
  width: fit-content;
}

.theme-toggle {
  border: 1px solid var(--color-border);
  background: color-mix(in oklab, var(--color-surface-solid) 72%, transparent);
  color: var(--color-text-primary);
  border-radius: 0.95rem;
  width: 42px;
  height: 42px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.theme-toggle:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-1px) scale(1.015);
  box-shadow: var(--shadow-sm), var(--shadow-glow);
}

.theme-toggle .theme-toggle-icon {
  font-size: 1rem;
}

.nav-contact-btn,
.premium-btn-main,
.premium-btn-secondary,
.btn-boom-primary,
.form-submit-btn,
.impact-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 1px solid transparent;
  border-radius: 0.95rem;
  padding: 0.75rem 1.2rem;
  font-weight: 650;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
}

.nav-contact-btn,
.premium-btn-main,
.btn-boom-primary,
.form-submit-btn,
.impact-btn {
  color: #ffffff;
  background: var(--gradient-main);
  box-shadow: 0 10px 26px color-mix(in srgb, var(--color-accent) 30%, transparent);
}

.premium-btn-secondary {
  background: color-mix(in oklab, var(--color-surface) 78%, transparent);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.nav-contact-btn:hover,
.premium-btn-main:hover,
.premium-btn-secondary:hover,
.btn-boom-primary:hover,
.form-submit-btn:hover,
.impact-btn:hover {
  transform: translateY(-1px) scale(1.01);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  z-index: 1500;
  background: var(--gradient-main);
}

.back-to-top-btn {
  position: fixed;
  right: 1.1rem;
  bottom: 1.1rem;
  width: 46px;
  height: 46px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: color-mix(in oklab, var(--color-surface-solid) 80%, transparent);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px) scale(0.96);
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  z-index: 1300;
}

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

.back-to-top-btn:hover {
  border-color: var(--color-border-strong);
  transform: translateY(-1px) scale(1.03);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.back-to-top-btn:focus-visible {
  outline: none;
  border-color: color-mix(in srgb, var(--color-accent) 62%, transparent);
  box-shadow: 0 0 0 4px var(--color-accent-soft), var(--shadow-md);
}

.back-to-top-btn i {
  font-size: 0.95rem;
}

.glass-card,
.skill-card,
.project-card,
.contact-card,
.featured-card,
.collection-block,
.core-box,
.impact-glass-card,
.current-focus-box,
.stat-item,
.popup-card {
  position: relative;
  background: color-mix(in oklab, var(--color-surface) 88%, transparent);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
}

.skill-card:hover,
.project-card:hover,
.contact-card:hover,
.featured-card:hover,
.collection-block:hover,
.core-box:hover,
.impact-glass-card:hover,
.current-focus-box:hover,
.stat-item:hover {
  transform: translateY(-3px) scale(1.008);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.skill-card::before,
.project-card::before,
.contact-card::before,
.collection-block::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--glow-gradient, none);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.skill-card:hover::before,
.project-card:hover::before,
.contact-card:hover::before,
.collection-block:hover::before {
  opacity: 1;
}

img,
iframe {
  border-radius: 0.95rem;
}

img,
video,
iframe,
canvas,
svg {
  max-width: 100%;
}

img,
video,
canvas {
  height: auto;
}

table {
  max-width: 100%;
}

pre,
code {
  overflow-wrap: anywhere;
  word-break: break-word;
}

.form-input,
textarea,
input,
select {
  width: 100%;
  background: color-mix(in oklab, var(--color-surface-solid) 86%, transparent);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  border-radius: 0.85rem;
  padding: 0.8rem 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

.form-input:focus,
textarea:focus,
input:focus,
select:focus {
  border-color: color-mix(in srgb, var(--color-accent) 62%, transparent);
  box-shadow: 0 0 0 4px var(--color-accent-soft);
  outline: none;
}

.footer-bar {
  margin-top: clamp(4rem, 8vw, 8rem);
  padding-top: 4.5rem;
  border-top: 1px solid var(--color-border);
  background: linear-gradient(180deg, transparent 0%, color-mix(in oklab, var(--color-bg-soft) 86%, transparent) 100%);
}

html:not([data-theme="light"]) .footer-bar {
  border-top-color: rgba(139, 169, 250, 0.66);
  background:
    radial-gradient(120% 120% at 50% -38%, rgba(111, 146, 255, 0.28), transparent 58%),
    linear-gradient(180deg, rgba(8, 14, 29, 0.95) 0%, rgba(11, 18, 36, 0.98) 56%, rgba(14, 22, 41, 1) 100%);
  box-shadow: inset 0 1px 0 rgba(159, 186, 255, 0.18), 0 -18px 40px rgba(10, 18, 38, 0.34);
}

html:not([data-theme="light"]) .footer-bottom {
  border-top-color: rgba(133, 163, 243, 0.44);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
  align-items: stretch;
}

.footer-content > div {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

@media (min-width: 1024px) {
  .footer-middle,
  .footer-right {
    display: flex;
    flex-direction: column;
    height: 100%;
  }

  .footer-right p {
    margin-bottom: 0;
  }
}

.footer-title {
  color: var(--color-text-primary);
  font-size: 1.02rem;
  letter-spacing: -0.01em;
  margin-bottom: 0.45rem;
  min-height: 1.5rem;
}

.footer-bar p,
.footer-bar a {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 0.45rem;
}

.footer-social {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.15rem;
}

.footer-social a {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.footer-social a:hover {
  transform: translateY(-2px) scale(1.02);
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-sm), var(--shadow-glow);
}

.footer-bottom {
  margin-top: 2.3rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
  padding: 1.2rem 0 1.8rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-middle .footer-resume-btn {
  margin-top: 0.25rem;
}

.footer-right p {
  margin-top: 0.2rem;
}

.fade-section {
  opacity: 0;
  transform: translateY(16px) scale(0.995);
  transition: opacity 0.66s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.66s cubic-bezier(0.22, 1, 0.36, 1),
    filter 0.66s cubic-bezier(0.22, 1, 0.36, 1);
  filter: blur(2px);
}

.fade-section.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0);
}

.fade-delay-1 {
  transition-delay: 0.08s;
}

.fade-delay-2 {
  transition-delay: 0.16s;
}

.fade-delay-3 {
  transition-delay: 0.24s;
}

.fade-delay-4 {
  transition-delay: 0.32s;
}

.fade-delay-5 {
  transition-delay: 0.4s;
}

.fade-delay-6 {
  transition-delay: 0.48s;
}

@media (max-width: 1100px) {
  .nav-container {
    grid-template-columns: auto 1fr;
    grid-template-areas:
      "logo actions"
      "links links";
    row-gap: 0.7rem;
  }

  .logo {
    grid-area: logo;
    width: clamp(82px, 28vw, 98px);
    height: clamp(35px, 10vw, 40px);
  }

  .logo-name {
    width: min(48vw, 190px);
  }

  .nav-links {
    grid-area: links;
    overflow-x: auto;
    justify-content: flex-start;
    scrollbar-width: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .nav-actions {
    grid-area: actions;
    justify-self: end;
  }

  .footer-content {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .container {
    width: min(1280px, 100% - 1.2rem);
  }

  .top-navbar {
    margin-top: 0.5rem;
    width: calc(100% - 1rem);
  }

  .nav-container {
    min-height: auto;
    padding: 0.7rem;
    grid-template-columns: auto auto;
    grid-template-areas:
      "logo actions"
      "toggle toggle"
      "links links";
    row-gap: 0.6rem;
  }

  .logo {
    grid-area: logo;
  }

  .nav-actions {
    grid-area: actions;
    justify-self: end;
  }

  .menu-toggle {
    grid-area: toggle;
    display: inline-flex;
  }

  .nav-links {
    display: none;
    grid-area: links;
    flex-direction: column;
    align-items: stretch;
    padding: 0.35rem;
    gap: 0.2rem;
    border-radius: 1rem;
    width: 100%;
  }

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

  .nav-links a {
    width: 100%;
    text-align: center;
    font-size: 0.82rem;
    padding: 0.62rem 0.78rem;
    white-space: nowrap;
  }

  .nav-contact-btn {
    padding: 0.62rem 0.9rem;
    font-size: 0.82rem;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 1023px) {
  .footer-content {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.1rem;
  }

  .footer-content > div {
    gap: 0.32rem;
  }
}

@media (max-width: 767px) {
  .container {
    width: min(1280px, 100% - 1rem);
  }

  .top-navbar {
    width: calc(100% - 0.8rem);
  }

  .logo-name {
    width: min(50vw, 180px);
  }

  .nav-container {
    padding: 0.65rem;
    gap: 0.6rem;
  }

  .nav-links a,
  .btn-cv,
  .premium-btn-main,
  .premium-btn-secondary,
  .nav-contact-btn,
  .form-submit-btn,
  .theme-toggle,
  .footer-social a {
    min-height: 44px;
    min-width: 44px;
  }

  .nav-links a {
    font-size: 0.82rem;
    padding: 0.56rem 0.8rem;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }

  .footer-title {
    margin-bottom: 0.4rem;
    min-height: 0;
  }
}

@media (max-width: 479px) {
  .container {
    width: min(1280px, 100% - 0.8rem);
  }

  .top-navbar {
    margin-top: 0.4rem;
    width: calc(100% - 0.7rem);
    border-radius: 1rem;
  }

  .nav-container {
    min-height: 56px;
    padding: 0.58rem;
    row-gap: 0.5rem;
  }

  .logo {
    font-size: 0.78rem;
  }

  .logo-name {
    width: min(52vw, 170px);
  }

  .nav-links {
    padding: 0.24rem;
    gap: 0.2rem;
  }

  .nav-links a {
    font-size: 0.78rem;
    padding: 0.52rem 0.72rem;
  }

  .nav-contact-btn {
    padding: 0.58rem 0.76rem;
    font-size: 0.78rem;
  }

  .btn-cv {
    padding: 0.56rem 0.72rem;
    font-size: 0.76rem;
  }

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

  .footer-content > div {
    gap: 0.28rem;
  }

  .back-to-top-btn {
    right: 0.8rem;
    bottom: 0.8rem;
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 359px) {
  .container {
    width: min(1280px, 100% - 0.6rem);
  }

  .top-navbar {
    width: calc(100% - 0.55rem);
  }

  .nav-links a {
    font-size: 0.74rem;
    padding: 0.48rem 0.62rem;
  }

  .theme-toggle,
  .footer-social a {
    min-width: 40px;
    min-height: 40px;
    width: 40px;
    height: 40px;
  }
}

@media (max-height: 520px) and (orientation: landscape) {
  .top-navbar {
    margin-top: 0.3rem;
  }

  .nav-container {
    min-height: 52px;
    padding-block: 0.45rem;
  }

  .footer-bar {
    margin-top: 3rem;
    padding-top: 2.5rem;
  }
}

/* Second-pass premium refinements */
:root {
  --letter-tight: -0.045em;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background-image: linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 0.65), transparent 88%);
}

h1,
h2,
.section-title,
.hero-title,
.impact-title,
.post-title,
.main-headline,
.contact-title {
  letter-spacing: var(--letter-tight);
}

.top-navbar::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid color-mix(in srgb, var(--color-border-strong) 35%, transparent);
  pointer-events: none;
}

.premium-btn-main,
.nav-contact-btn,
.btn-boom-primary,
.form-submit-btn,
.impact-btn {
  position: relative;
  overflow: hidden;
}

.premium-btn-main::before,
.nav-contact-btn::before,
.btn-boom-primary::before,
.form-submit-btn::before,
.impact-btn::before {
  content: "";
  position: absolute;
  top: -180%;
  left: -35%;
  width: 30%;
  height: 360%;
  transform: rotate(22deg);
  background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.35), transparent);
  transition: left 450ms ease;
}

.premium-btn-main:hover::before,
.nav-contact-btn:hover::before,
.btn-boom-primary:hover::before,
.form-submit-btn:hover::before,
.impact-btn:hover::before {
  left: 120%;
}

.footer-bar {
  position: relative;
}

.footer-bar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: min(900px, 90%);
  height: 1px;
  transform: translateX(-50%);
  background: linear-gradient(to right, transparent, var(--color-border-strong), transparent);
}

/* Special border system for light theme */
[data-theme="light"] .skill-card,
[data-theme="light"] .project-card,
[data-theme="light"] .contact-card,
[data-theme="light"] .featured-card,
[data-theme="light"] .blog-accordion-item,
[data-theme="light"] .collection-block,
[data-theme="light"] .core-box,
[data-theme="light"] .impact-glass-card,
[data-theme="light"] .current-focus-box,
[data-theme="light"] .stat-item,
[data-theme="light"] .about-contribution-card,
[data-theme="light"] .location-section,
[data-theme="light"] .popup-card {
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

[data-theme="light"] .skill-card::after,
[data-theme="light"] .project-card::after,
[data-theme="light"] .contact-card::after,
[data-theme="light"] .featured-card::after,
[data-theme="light"] .blog-accordion-item::after,
[data-theme="light"] .collection-block::after,
[data-theme="light"] .core-box::after,
[data-theme="light"] .impact-glass-card::after,
[data-theme="light"] .about-contribution-card::after,
[data-theme="light"] .location-section::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  pointer-events: none;
}

[data-theme="light"] .section-title,
[data-theme="light"] .card-title,
[data-theme="light"] .impact-title,
[data-theme="light"] .gallery-section-title,
[data-theme="light"] .contact-title,
[data-theme="light"] .main-headline,
[data-theme="light"] .project-header h1,
[data-theme="light"] .post-title {
  position: relative;
  display: inline-block;
  padding-bottom: 0.28rem;
  border-bottom: 2px solid var(--color-accent-soft);
}

/* Unified light-theme navbar + footer color system (all pages) */
[data-theme="light"] .top-navbar {
  border-color: #8eaeea;
  background: var(--gradient-light-blue);
  background-size: 220% 220%;
  animation: lightFooterShift 18s ease-in-out infinite;
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

[data-theme="light"] .top-navbar.scrolled {
  border-color: #8eaeea;
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

[data-theme="light"] .nav-links {
  background: color-mix(in oklab, var(--color-surface-solid) 92%, transparent);
  border-color: var(--color-border);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.88);
}

[data-theme="light"] .nav-links a {
  color: #102544;
}

[data-theme="light"] .logo-name {
  background: rgba(255, 255, 255, 0.96);
  border-color: #8eaeea;
}

[data-theme="light"] .nav-name {
  color: #102544;
}

[data-theme="light"] .nav-links a:hover,
[data-theme="light"] .nav-links a.active {
  color: #ffffff;
  background: var(--gradient-main);
  box-shadow: var(--shadow-sm), var(--shadow-glow);
}

[data-theme="light"] .form-input,
[data-theme="light"] input,
[data-theme="light"] textarea,
[data-theme="light"] select {
  background: #ffffff;
  border-color: var(--color-border);
  color: var(--color-text-primary);
}

[data-theme="light"] input::placeholder,
[data-theme="light"] textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 1;
}

[data-theme="light"] h1,
[data-theme="light"] h2,
[data-theme="light"] h3,
[data-theme="light"] h4,
[data-theme="light"] h5,
[data-theme="light"] h6 {
  color: var(--color-text-primary);
}

[data-theme="light"] .logo,
[data-theme="light"] .logo-last {
  color: #111111;
}

[data-theme="light"] .logo {
  background: rgba(255, 255, 255, 0.9);
  border-color: #bfd0ef;
  box-shadow: 0 10px 22px rgba(49, 86, 179, 0.14);
}

[data-theme="light"] .logo-last:last-child {
  color: #111111;
}

[data-theme="light"] .footer-bar {
  border-top-color: #8eaeea;
  background: var(--gradient-light-blue);
  background-size: 220% 220%;
  animation: lightFooterShift 18s ease-in-out infinite;
}

[data-theme="light"] .footer-title {
  color: #12274b;
}

[data-theme="light"] .footer-bar p,
[data-theme="light"] .footer-bar a {
  color: #244271;
}

[data-theme="light"] .footer-bar a:hover {
  color: #1d4fc0;
}

[data-theme="light"] .footer-social a {
  background: rgba(240, 247, 255, 0.95);
  border-color: #a9bfe9;
  color: #1f4176;
}

[data-theme="light"] .footer-social a:hover {
  background: linear-gradient(135deg, var(--highlight-blue-grad-start) 0%, var(--highlight-blue-grad-end) 100%);
  color: #ffffff;
  border-color: #2448b2;
}

[data-theme="light"] .btn-cv {
  background: rgba(240, 247, 255, 0.95);
  border-color: #a9bfe9;
  color: #1f4176;
}

[data-theme="light"] .btn-cv:hover {
  background: linear-gradient(135deg, var(--highlight-blue-grad-start) 0%, var(--highlight-blue-grad-end) 100%);
  color: #ffffff;
  border-color: #2448b2;
}

[data-theme="light"] .footer-bottom {
  border-top-color: #c5d5f3;
  color: #36527f;
}

@keyframes lightNavShift {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@keyframes lightFooterShift {
  0%,
  100% {
    background-position: 50% 0%;
  }
  50% {
    background-position: 50% 100%;
  }
}

[data-theme="light"] .tag,
[data-theme="light"] .tech-pills span,
[data-theme="light"] .category-tag,
[data-theme="light"] .meta-tag,
[data-theme="light"] .read-time-badge,
[data-theme="light"] .about-contribution-label,
[data-theme="light"] .contact-label,
[data-theme="light"] .project-type-tag,
[data-theme="light"] .project-proof {
  border: 1px solid var(--highlight-blue-border);
  border-radius: 999px;
  background: var(--highlight-blue-bg);
  color: var(--highlight-blue-text);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.95);
}

[data-theme="light"] .tag:hover,
[data-theme="light"] .tech-pills span:hover,
[data-theme="light"] .category-tag:hover,
[data-theme="light"] .meta-tag:hover,
[data-theme="light"] .read-time-badge:hover,
[data-theme="light"] .about-contribution-label:hover,
[data-theme="light"] .contact-label:hover,
[data-theme="light"] .project-type-tag:hover,
[data-theme="light"] .project-proof:hover {
  border-color: var(--highlight-blue-border-strong);
  background: var(--highlight-blue-bg-strong);
  color: var(--highlight-blue-text-strong);
}