/* =========================================================
   Certificates & projects
   ========================================================= */

/* ---------- Filters ---------- */

.filter-bar {
  display: flex;
  width: fit-content;
  max-width: 100%;
  margin-bottom: 28px;
  padding: 7px;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  border-radius: 999px;
}

.filter-btn {
  display: inline-flex;
  padding: 9px 15px;
  align-items: center;
  gap: 7px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--muted);
  transition: color 0.3s, background 0.3s, border-color 0.3s;
}

.filter-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
}

.filter-btn.is-active {
  border-color: rgba(255, 255, 255, 0.09);
  background: linear-gradient(120deg, rgba(139, 92, 246, 0.22), rgba(34, 211, 238, 0.1));
  color: #ffffff;
}

.filter-btn__count {
  display: inline-grid;
  min-width: 19px;
  height: 19px;
  padding: 0 5px;
  place-items: center;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  font-family: var(--font-mono);
  font-size: 0.52rem;
  color: var(--cyan);
}

/* ---------- Certificate hero stack ---------- */

.cert-hero-stack {
  position: relative;
  display: grid;
  width: min(100%, 430px);
  aspect-ratio: 1;
  place-items: center;
}

.cert-hero-stack__card {
  position: absolute;
  width: 71%;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 12px;
  background: #ffffff;
  box-shadow: 0 26px 60px -24px rgba(0, 0, 0, 0.85);
  transition: transform 0.6s var(--ease);
}

.cert-hero-stack__card img {
  width: 100%;
}

.cert-hero-stack__card--1 {
  z-index: 1;
  transform: translate(-17%, 4%) rotate(-10deg);
}

.cert-hero-stack__card--2 {
  z-index: 2;
  transform: translate(5%, -4%) rotate(3deg);
}

.cert-hero-stack__card--3 {
  z-index: 3;
  opacity: 0.92;
  transform: translate(18%, 12%) rotate(13deg);
}

.cert-hero-stack:hover .cert-hero-stack__card--1 {
  transform: translate(-20%, 5%) rotate(-13deg);
}

.cert-hero-stack:hover .cert-hero-stack__card--2 {
  transform: translate(4%, -6%) rotate(1deg);
}

.cert-hero-stack:hover .cert-hero-stack__card--3 {
  transform: translate(22%, 15%) rotate(16deg);
}

.cert-hero-stack__badge {
  position: absolute;
  right: 0;
  bottom: 8%;
  z-index: 5;
  display: flex;
  padding: 11px 15px;
  align-items: center;
  gap: 9px;
  border-radius: 15px;
}

.cert-hero-stack__badge .icon {
  width: 21px;
  height: 21px;
  color: var(--amber);
}

.cert-hero-stack__badge > span {
  display: flex;
  flex-direction: column;
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.cert-hero-stack__badge strong {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1;
  color: #ffffff;
}

/* ---------- Certificate grid ---------- */

.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.cert-card {
  overflow: hidden;
  border-radius: 22px;
  transition: transform 0.45s var(--ease), border-color 0.4s, opacity 0.35s;
}

.cert-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-5px);
}

.cert-card.is-filtered,
.project-card.is-filtered,
[data-filter-static].is-filtered {
  display: none;
}

.cert-card__button {
  display: flex;
  width: 100%;
  padding: 0;
  flex-direction: column;
  border: 0;
  background: transparent;
  text-align: left;
}

.cert-card__image {
  position: relative;
  display: block;
  aspect-ratio: 1.414;
  overflow: hidden;
  background: #ffffff;
}

.cert-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.65s var(--ease);
}

.cert-card:hover .cert-card__image img {
  transform: scale(1.035);
}

.cert-card__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 8px;
  background: rgba(5, 7, 14, 0.48);
  opacity: 0;
  -webkit-backdrop-filter: blur(2px);
  backdrop-filter: blur(2px);
  transition: opacity 0.35s;
}

.cert-card:hover .cert-card__overlay {
  opacity: 1;
}

.cert-card__zoom {
  display: grid;
  width: 43px;
  height: 43px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  transform: scale(0.9);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  transition: transform 0.35s var(--ease);
}

.cert-card:hover .cert-card__zoom {
  transform: scale(1);
}

.cert-card__zoom .icon {
  width: 18px;
  height: 18px;
}

.cert-card__view {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #ffffff;
}

.cert-card__id {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 4px 8px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
  background: rgba(5, 7, 14, 0.62);
  font-family: var(--font-mono);
  font-size: 0.5rem;
  color: #ffffff;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.cert-card__body {
  display: flex;
  width: 100%;
  padding: 17px;
  flex-direction: column;
  gap: 5px;
}

.cert-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.cert-card__title {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text);
}

.cert-card__hint {
  display: flex;
  margin-top: 5px;
  align-items: center;
  gap: 5px;
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--cyan);
}

.cert-card__hint .icon {
  width: 12px;
  height: 12px;
}

/* ---------- Certificate note / empty state ---------- */

.cert-note {
  display: flex;
  margin-top: 24px;
  padding: 20px 23px;
  align-items: flex-start;
  gap: 13px;
  border-radius: 20px;
}

.cert-note__icon {
  display: grid;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  place-items: center;
  border-radius: 12px;
  background: rgba(34, 211, 238, 0.09);
  color: var(--cyan);
}

.cert-note__icon .icon {
  width: 18px;
  height: 18px;
}

.cert-note strong {
  display: block;
  margin-bottom: 3px;
  font-size: 0.8rem;
}

.cert-note p {
  font-size: 0.72rem;
  line-height: 1.62;
  color: var(--muted);
}

.cert-note p strong {
  display: inline;
  font-size: inherit;
  color: var(--text-soft);
}

.empty-state {
  margin-top: 18px;
  padding: 48px 24px;
  border-radius: 24px;
  text-align: center;
}

.empty-state__icon {
  display: grid;
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
}

.empty-state__icon .icon {
  width: 20px;
  height: 20px;
}

.empty-state h3 {
  margin-bottom: 5px;
  font-size: 1.05rem;
}

.empty-state p {
  font-size: 0.78rem;
  color: var(--muted);
}

/* ---------- Project orbit ---------- */

.project-orbit {
  position: relative;
  display: grid;
  width: min(100%, 390px);
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.14), transparent 64%);
}

.project-orbit__ring {
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}

.project-orbit__ring--1 {
  inset: 11%;
  border-style: dashed;
  animation: spin 42s linear infinite;
}

.project-orbit__ring--2 {
  inset: 27%;
  border-color: rgba(34, 211, 238, 0.16);
  animation: spin 30s linear infinite reverse;
}

.project-orbit__center {
  position: relative;
  z-index: 2;
  text-align: center;
}

.project-orbit__center strong {
  display: block;
  font-family: var(--font-display);
  font-size: 3.4rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.07em;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.project-orbit__center span {
  display: block;
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: 0.55rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.project-orbit__node {
  position: absolute;
  z-index: 3;
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  background: rgba(10, 13, 24, 0.9);
  box-shadow: 0 0 26px rgba(34, 211, 238, 0.12);
  color: var(--cyan);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  animation: floatY 6s ease-in-out infinite;
}

.project-orbit__node .icon {
  width: 18px;
  height: 18px;
}

.project-orbit__node--1 { top: 7%; left: 16%; animation-delay: -0.8s; }
.project-orbit__node--2 { top: 19%; right: 7%; animation-delay: -2.1s; color: var(--violet-soft); }
.project-orbit__node--3 { bottom: 13%; left: 9%; animation-delay: -3.4s; color: var(--pink); }
.project-orbit__node--4 { right: 18%; bottom: 6%; animation-delay: -4.6s; color: var(--emerald); }

/* ---------- Projects grid ---------- */

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.project-card {
  overflow: hidden;
  border-radius: 26px;
  scroll-margin-top: 120px;
  transition: transform 0.45s var(--ease), border-color 0.4s;
}

.project-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-5px);
}

.project-card--featured {
  grid-column: span 2;
}

.project-card__button {
  display: flex;
  width: 100%;
  padding: 0;
  flex-direction: column;
  border: 0;
  background: transparent;
  text-align: left;
}

.project-card--featured .project-card__button {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: stretch;
}

.project-card--featured .project-cover {
  height: 100%;
  min-height: 350px;
  aspect-ratio: auto;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 0;
}

.project-card__body {
  display: flex;
  padding: 23px;
  flex: 1;
  flex-direction: column;
}

.project-card__meta {
  display: flex;
  margin-bottom: 7px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 0.52rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.project-card__title {
  margin-top: 4px;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.project-card--featured .project-card__title {
  font-size: clamp(1.7rem, 3vw, 2.35rem);
}

.project-card__tagline {
  margin-top: 4px;
  font-size: 0.84rem;
  line-height: 1.5;
  color: var(--text-soft);
}

.project-card__description {
  margin-top: 8px;
  font-size: 0.76rem;
  line-height: 1.62;
  color: var(--muted);
}

.project-card__footer {
  display: flex;
  margin-top: auto;
  padding-top: 18px;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.project-card__footer .link-arrow {
  flex-shrink: 0;
  font-size: 0.68rem;
}

.project-more {
  display: flex;
  min-height: 260px;
  padding: 27px;
  flex-direction: column;
  align-items: flex-start;
  border-radius: 26px;
  background:
    radial-gradient(110% 90% at 100% 0%, rgba(139, 92, 246, 0.18), transparent 55%),
    linear-gradient(150deg, rgba(34, 211, 238, 0.06), rgba(255, 255, 255, 0.015));
}

.project-more__icon {
  display: grid;
  width: 44px;
  height: 44px;
  margin-bottom: 18px;
  place-items: center;
  border: 1px solid rgba(139, 92, 246, 0.24);
  border-radius: 13px;
  background: rgba(139, 92, 246, 0.1);
  color: var(--violet-soft);
}

.project-more__icon .icon {
  width: 19px;
  height: 19px;
}

.project-more h3 {
  margin-bottom: 7px;
  font-size: 1.1rem;
}

.project-more p {
  max-width: 320px;
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--muted);
}

.project-more .link-arrow {
  margin-top: auto;
  padding-top: 20px;
  font-size: 0.72rem;
}

/* ---------- Certificate modal ---------- */

.modal__dialog--cert {
  width: min(100%, 1100px);
}

.cert-modal__body {
  display: grid;
  min-height: 0;
  overflow-y: auto;
  grid-template-columns: 1.1fr 0.9fr;
}

.cert-modal__visual {
  position: relative;
  display: flex;
  min-height: 380px;
  padding: 24px;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 50% 30%, rgba(139, 92, 246, 0.12), transparent 65%),
    #080a12;
}

.cert-modal__visual img {
  width: auto;
  max-width: 100%;
  max-height: 60vh;
  border-radius: 8px;
  background: #ffffff;
  box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.9);
}

.cert-modal__nav {
  position: absolute;
  bottom: 16px;
  left: 50%;
  display: flex;
  gap: 8px;
  transform: translateX(-50%);
}

.cert-modal__info {
  overflow-y: auto;
  padding: 28px;
}

.cert-modal__meta {
  display: flex;
  margin-bottom: 14px;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.cert-modal__id {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.cert-modal__issuer {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.65rem;
  color: var(--muted);
}

.cert-modal__issuer .icon {
  width: 14px;
  height: 14px;
  color: var(--amber);
}

.cert-modal__info h2 {
  margin-bottom: 12px;
  font-size: clamp(1.45rem, 2.5vw, 1.95rem);
}

.cert-modal__description {
  margin-bottom: 20px;
  font-size: 0.84rem;
  line-height: 1.72;
  color: var(--muted);
}

.cert-modal__footer {
  display: flex;
  margin-top: 26px;
  padding-top: 18px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.cert-modal__counter {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--muted);
}

/* ---------- Project modal ---------- */

.modal__dialog--project {
  width: min(100%, 1050px);
}

.project-modal__scroll {
  min-height: 0;
  overflow-y: auto;
}

.project-modal__scroll .project-cover {
  min-height: 250px;
  aspect-ratio: 21 / 8;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.project-modal__body {
  padding: clamp(24px, 4vw, 40px);
}

.project-modal__meta {
  display: flex;
  margin-bottom: 14px;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--muted);
}

.project-modal__status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--text-soft);
}

.project-modal__body h2 {
  margin-bottom: 7px;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
}

.project-modal__tagline {
  margin-bottom: 14px;
  font-size: 0.95rem;
  color: var(--text-soft);
}

.project-modal__description {
  max-width: 760px;
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--muted);
}

.project-modal__columns {
  display: grid;
  margin-top: 26px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.project-modal__columns h3 {
  margin-bottom: 13px;
  font-size: 0.95rem;
}

.project-modal__columns .feature-list {
  margin-bottom: 0;
}

.project-modal__footer {
  display: flex;
  margin-top: 28px;
  padding-top: 22px;
  align-items: center;
  gap: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  flex-wrap: wrap;
}

.project-modal__note {
  font-family: var(--font-mono);
  font-size: 0.58rem;
  color: var(--muted);
}