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

:root {
  color-scheme: light dark;

  --bg: #f3f5f9;
  --text: #16181d;
  --muted: #70747f;

  --card: rgba(255, 255, 255, 0.76);
  --card-border: rgba(255, 255, 255, 0.82);

  --surface: rgba(255, 255, 255, 0.72);
  --surface-hover: rgba(255, 255, 255, 0.96);

  --line: rgba(20, 24, 34, 0.08);

  --shadow:
    0 35px 100px rgba(31, 40, 65, 0.16),
    0 2px 10px rgba(31, 40, 65, 0.06);

  --facebook: #1877f2;
  --linkedin: #0a66c2;
  --zalo: #0068ff;

  --orb-one: rgba(87, 164, 255, 0.38);
  --orb-two: rgba(162, 116, 255, 0.27);
  --orb-three: rgba(255, 173, 111, 0.28);
}

:root[data-theme="dark"] {
  --bg: #070a12;
  --text: #f5f7fb;
  --muted: #9aa1b1;

  --card: rgba(14, 18, 30, 0.76);
  --card-border: rgba(255, 255, 255, 0.09);

  --surface: rgba(255, 255, 255, 0.055);
  --surface-hover: rgba(255, 255, 255, 0.085);

  --line: rgba(255, 255, 255, 0.08);

  --shadow:
    0 35px 110px rgba(0, 0, 0, 0.45),
    0 2px 12px rgba(0, 0, 0, 0.25);

  --orb-one: rgba(36, 111, 255, 0.28);
  --orb-two: rgba(138, 71, 255, 0.25);
  --orb-three: rgba(255, 128, 62, 0.16);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #070a12;
    --text: #f5f7fb;
    --muted: #9aa1b1;
    --card: rgba(14, 18, 30, 0.76);
    --card-border: rgba(255, 255, 255, 0.09);
    --surface: rgba(255, 255, 255, 0.055);
    --surface-hover: rgba(255, 255, 255, 0.085);
    --line: rgba(255, 255, 255, 0.08);
    --shadow:
      0 35px 110px rgba(0, 0, 0, 0.45),
      0 2px 12px rgba(0, 0, 0, 0.25);
    --orb-one: rgba(36, 111, 255, 0.28);
    --orb-two: rgba(138, 71, 255, 0.25);
    --orb-three: rgba(255, 128, 62, 0.16);
  }
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  color: var(--text);
  background: var(--bg);
  transition: background 0.25s ease, color 0.25s ease;
}

.background-orb {
  position: fixed;
  z-index: 0;
  border-radius: 999px;
  filter: blur(10px);
  pointer-events: none;
}

.orb-1 {
  width: 440px;
  height: 440px;
  top: -170px;
  left: -130px;
  background: radial-gradient(circle, var(--orb-one), transparent 68%);
}

.orb-2 {
  width: 500px;
  height: 500px;
  top: 12%;
  right: -210px;
  background: radial-gradient(circle, var(--orb-two), transparent 68%);
}

.orb-3 {
  width: 500px;
  height: 500px;
  bottom: -250px;
  left: 30%;
  background: radial-gradient(circle, var(--orb-three), transparent 68%);
}

.page-shell {
  position: relative;
  z-index: 1;
  width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 42px 18px 28px;
}

.profile-card {
  position: relative;
  width: min(100%, 560px);
  padding: 26px 28px 26px;
  border: 1px solid var(--card-border);
  border-radius: 34px;
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(28px) saturate(140%);
  -webkit-backdrop-filter: blur(28px) saturate(140%);
}

.top-actions {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 4px;
}

.icon-button {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--text);
  background: var(--surface);
  cursor: pointer;
  transition: transform 0.18s ease, background 0.18s ease;
}

.icon-button:hover {
  transform: translateY(-1px);
  background: var(--surface-hover);
}

.theme-icon {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.sun-icon {
  display: none;
}

:root[data-theme="dark"] .moon-icon {
  display: none;
}

:root[data-theme="dark"] .sun-icon {
  display: block;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .moon-icon {
    display: none;
  }
  :root:not([data-theme="light"]) .sun-icon {
    display: block;
  }
}

.profile-head {
  text-align: center;
  padding: 4px 18px 30px;
}

.avatar-ring {
  position: relative;
  width: 126px;
  height: 126px;
  margin: 0 auto 20px;
  padding: 4px;
  border-radius: 50%;
  background:
    linear-gradient(var(--card), var(--card)) padding-box,
    linear-gradient(135deg, #58a6ff, #9f7aea, #ff9b62) border-box;
  border: 2px solid transparent;
  box-shadow: 0 18px 40px rgba(35, 56, 95, 0.16);
}

.avatar {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  border-radius: 50%;
}

.status-dot {
  position: absolute;
  width: 20px;
  height: 20px;
  right: 7px;
  bottom: 8px;
  border: 4px solid var(--card);
  border-radius: 50%;
  background: #29c66f;
}

h1 {
  font-size: clamp(2rem, 8vw, 2.45rem);
  line-height: 1.1;
  letter-spacing: -0.045em;
  font-weight: 700;
}

.tagline {
  margin-top: 9px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
}

.tagline span {
  margin: 0 3px;
  opacity: 0.55;
}

.bio {
  max-width: 410px;
  margin: 17px auto 0;
  font-size: 0.94rem;
  line-height: 1.7;
  color: var(--muted);
}

.links-grid {
  display: grid;
  gap: 12px;
}

.profile-link {
  width: 100%;
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 20px;
  text-decoration: none;
  text-align: left;
  color: var(--text);
  background: var(--surface);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  cursor: pointer;
  transition:
    transform 0.18s ease,
    background 0.18s ease,
    border-color 0.18s ease,
    box-shadow 0.18s ease;
}

.profile-link:hover {
  transform: translateY(-2px);
  background: var(--surface-hover);
  box-shadow: 0 14px 30px rgba(24, 35, 58, 0.09);
}

.profile-link:active {
  transform: translateY(0) scale(0.99);
}

.email-button {
  font: inherit;
}

.brand-icon {
  flex: 0 0 46px;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  color: #fff;
  background: #262b34;
  box-shadow: 0 9px 20px rgba(22, 28, 42, 0.14);
}

.brand-icon svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.facebook .brand-icon {
  background: var(--facebook);
}

.linkedin .brand-icon {
  background: var(--linkedin);
}

.zalo .brand-icon {
  background: var(--zalo);
}

.brand-text {
  font-size: 1.15rem;
  font-weight: 700;
}

.link-copy {
  min-width: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.link-copy strong {
  font-size: 0.96rem;
  font-weight: 650;
}

.link-copy small {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.78rem;
  color: var(--muted);
}

.chevron {
  flex: 0 0 auto;
  padding: 0 4px;
  font-size: 1.08rem;
  color: var(--muted);
  transition: transform 0.18s ease;
}

.profile-link:hover .chevron {
  transform: translateX(2px);
}

.qr-card {
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border: 1px dashed var(--line);
  border-radius: 20px;
  background: rgba(127, 127, 127, 0.035);
}

.qr-wrap {
  width: 68px;
  height: 68px;
  overflow: hidden;
  flex: 0 0 68px;
  padding: 5px;
  border-radius: 14px;
  background: #fff;
}

.qr-wrap img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
}

.qr-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.qr-copy strong {
  font-size: 0.9rem;
}

.qr-copy span {
  font-size: 0.78rem;
  color: var(--muted);
}

.divider {
  height: 1px;
  margin: 24px 0 18px;
  background: var(--line);
}

footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  color: var(--muted);
}

footer > div {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

footer strong {
  font-size: 0.82rem;
  color: var(--text);
}

footer span,
footer p {
  font-size: 0.72rem;
}

.credit {
  margin-top: 16px;
  font-size: 0.7rem;
  color: var(--muted);
  opacity: 0.68;
}

.toast {
  position: fixed;
  z-index: 20;
  left: 50%;
  bottom: 26px;
  transform: translate(-50%, 18px);
  padding: 11px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  font-size: 0.82rem;
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 620px) {
  .page-shell {
    justify-content: flex-start;
    padding: 18px 12px 24px;
  }

  .profile-card {
    padding: 18px 14px 22px;
    border-radius: 28px;
  }

  .profile-head {
    padding-left: 10px;
    padding-right: 10px;
  }

  .avatar-ring {
    width: 112px;
    height: 112px;
  }

  .profile-link {
    min-height: 68px;
    border-radius: 18px;
  }

  .qr-card {
    border-radius: 18px;
  }

  footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
}