.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .85rem 1.5rem;
  border-radius: var(--radius-pill);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: .01em;
  border: 1px solid transparent;
  transition: transform .3s var(--ease-out),
              background .3s var(--ease-out),
              border-color .3s var(--ease-out),
              color .3s var(--ease-out),
              box-shadow .3s var(--ease-out);
}
.btn svg { width: 18px; height: 18px; }

.btn--primary {
  background: var(--accent);
  color: var(--on-accent);
  box-shadow: 0 8px 30px -14px var(--accent-glow);
}
.btn--primary:hover {
  background: #fff;
  transform: translateY(-2px);
  box-shadow: 0 14px 36px -16px var(--accent-glow);
}

.btn--ghost {
  border-color: var(--line-strong);
  color: var(--text);
  background: rgba(250, 249, 246, .02);
}
.btn--ghost:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-2px);
}

.btn--sm { padding: .6rem 1.1rem; font-size: var(--fs-xs); }
.btn--block { width: 100%; }

.btn:active { transform: translateY(0); }

.skills {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin-bottom: 2.5rem;
}
.skill {
  padding: .45rem 1rem;
  border-radius: var(--radius-pill);
  font-size: var(--fs-sm);
  color: var(--muted);

  background: var(--glass-bg-solid);
  border: var(--glass-border);
  box-shadow:
    inset 0 1px 0 rgba(250, 249, 246, .18),
    inset 0 -1px 0 rgba(250, 249, 246, .07);

  transition: border-color .3s var(--ease-out),
              color .3s var(--ease-out),
              box-shadow .3s var(--ease-out);
}
.skill:hover {
  border-color: rgba(250, 249, 246, .45);
  color: var(--text);
  box-shadow:
    inset 0 1px 0 rgba(250, 249, 246, .28),
    inset 0 -8px 16px -12px var(--accent-glow),
    0 6px 20px -12px var(--accent-glow);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  border-radius: var(--radius-sm);
  overflow: hidden;

  background: rgba(250, 249, 246, .09);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
}
.stat {
  background: var(--glass-bg-solid);
  padding: 1.1rem 1.2rem;
}

@media (max-width: 620px) {
  .stats { grid-template-columns: 1fr 1fr; }
  .stat:last-child:nth-child(odd) { grid-column: 1 / -1; }
}
.stat__label {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--muted);
  margin-bottom: .3rem;
}
.stat__value {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
}

.project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .85rem;
  padding: clamp(1.4rem, 3vw, 2rem);
  border-radius: var(--radius);

  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);

  transform-style: preserve-3d;
  transition: box-shadow .35s var(--ease-out);
}

.project-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    300px circle at var(--mx, 50%) var(--my, 50%),
    var(--accent-soft),
    transparent 62%
  );
  opacity: var(--glow, 0);
  transition: opacity .4s var(--ease-out);
  pointer-events: none;
}

.project-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: radial-gradient(
    260px circle at var(--mx, 50%) var(--my, 50%),
    var(--accent-2),
    var(--accent) 35%,
    transparent 70%
  );
  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: var(--glow, 0);
  transition: opacity .4s var(--ease-out);
  pointer-events: none;
}

.project-card:hover {
  box-shadow:
    inset 0 1px 0 rgba(250, 249, 246, .3),
    inset 0 -1px 0 rgba(250, 249, 246, .12),
    inset 0 -22px 34px -26px var(--accent-glow),
    0 28px 60px -30px rgba(0, 0, 0, .95);
}

.project-card > * { position: relative; z-index: 1; }

.project-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.project-card__num {
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  color: var(--accent);
  letter-spacing: .1em;
}
.project-card__tag {
  padding: .25rem .65rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  font-size: var(--fs-xs);
  color: var(--muted);
}

.project-card__title { font-size: var(--fs-h3); }

.project-card__desc {
  color: var(--muted);
  font-size: var(--fs-sm);
  flex-grow: 1;
}

.project-card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
}
.project-card__stack li {
  padding: .2rem .6rem;
  border-radius: var(--radius-pill);
  background: var(--surface-2);
  font-size: var(--fs-xs);
  color: var(--muted);
}

.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  margin-top: .4rem;
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--accent-2);
  transition: gap .3s var(--ease-out), color .3s var(--ease-out);
}
.project-card__link svg { width: 16px; height: 16px; }
.project-card__link:hover { gap: .7rem; color: var(--text); }

.socials {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 2.2rem;
}
.social {
  display: inline-block;
  padding: .7rem 1.3rem;
  border-radius: var(--radius-pill);
  font-size: var(--fs-sm);
  font-weight: 500;
  will-change: transform;

  background: var(--glass-bg-solid);
  border: var(--glass-border);
  box-shadow:
    inset 0 1px 0 rgba(250, 249, 246, .2),
    inset 0 -1px 0 rgba(250, 249, 246, .08);

  transition: border-color .3s var(--ease-out), box-shadow .3s var(--ease-out);
}
.social:hover {
  border-color: rgba(250, 249, 246, .45);
  box-shadow:
    inset 0 1px 0 rgba(250, 249, 246, .3),
    inset 0 -10px 20px -14px var(--accent-glow),
    0 10px 26px -14px var(--accent-glow);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  padding: clamp(1.5rem, 3.5vw, 2.2rem);
  border-radius: var(--radius);

  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.field { display: flex; flex-direction: column; gap: .45rem; }

.field label {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--muted);
}

.field input,
.field textarea {
  width: 100%;
  padding: .8rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-size: var(--fs-sm);
  transition: border-color .25s var(--ease-out), background .25s var(--ease-out);
  resize: vertical;
}
.field input::placeholder,
.field textarea::placeholder { color: #52525b; }

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface-2);
}
.field input:focus-visible,
.field textarea:focus-visible { outline: none; }

.field.has-error input,
.field.has-error textarea { border-color: #f87171; }

.field__error {
  min-height: 1rem;
  font-size: var(--fs-xs);
  color: #f87171;
}

.form-status {
  font-size: var(--fs-sm);
  color: var(--muted);
  min-height: 1.4rem;
}
.form-status.is-success { color: #4ade80; }
.form-status.is-error   { color: #f87171; }