/* =========================================
   BILISIMCI HOCAM - PROGRAMLAMA EGITIMI
   BH ortak mimari sayfa stilleri
   ========================================= */

body {
  min-height: 100vh;
  overflow-x: hidden;
}

.pe-wrap {
  position: relative;
  z-index: 1;
  width: min(96vw, 1520px);
  margin: clamp(1.1rem, 2vw, 2rem) auto 0;
  padding-bottom: clamp(3rem, 6vw, 7rem);
}

.pe-hero {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  gap: clamp(1rem, 2vw, 1.6rem);
  align-items: stretch;
  padding: clamp(1.2rem, 3.2vw, 3rem);
  min-height: 320px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background:
    radial-gradient(circle at 12% 18%, rgba(34,197,94,.16), transparent 28%),
    radial-gradient(circle at 86% 14%, rgba(var(--primary-rgb), .14), transparent 26%),
    linear-gradient(135deg, color-mix(in srgb, var(--bg2) 78%, transparent), var(--bg1));
  box-shadow: 0 24px 80px rgba(0, 0, 0, .26);
}

.pe-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(var(--grid, rgba(255,255,255,.03)) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid, rgba(255,255,255,.03)) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(circle at center, black 30%, transparent 82%);
}

.pe-hero-copy,
.pe-hero-panel {
  position: relative;
  z-index: 1;
}

.pe-eyebrow,
.pe-section-kicker {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  color: #34d399;
  font: 800 .72rem/1 'JetBrains Mono', monospace;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: .7rem;
}

.pe-hero h1 {
  max-width: 840px;
  color: var(--text1);
  font: 900 clamp(2rem, 4.5vw, 4.8rem)/.98 'Montserrat', sans-serif;
  letter-spacing: -.06em;
  margin: 0 0 .75rem;
}

.pe-hero p,
.pe-note,
.pe-card p,
.pe-detail-sub,
.pe-question,
.pe-answer {
  color: var(--text3);
  line-height: 1.7;
}

.pe-hero p {
  max-width: 740px;
  margin: 0;
  font-size: clamp(.95rem, 1.15vw, 1.15rem);
}

.pe-search {
  display: flex;
  align-items: center;
  gap: .7rem;
  width: min(100%, 720px);
  margin-top: 1.35rem;
  padding: .8rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.06);
}

.pe-search input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text1);
  font: 700 .95rem 'Sora', sans-serif;
}

.pe-hero-panel {
  align-self: center;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255,255,255,.045);
  backdrop-filter: blur(18px);
}

.pe-panel-label {
  color: var(--text2);
  font: 800 .76rem 'JetBrains Mono', monospace;
  text-transform: uppercase;
  letter-spacing: .1em;
}

.pe-stat-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .7rem;
  margin: 1rem 0;
}

.pe-stat {
  min-height: 88px;
  padding: .8rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,.12);
}

.pe-stat strong {
  display: block;
  color: var(--text1);
  font: 900 clamp(1.5rem, 2.4vw, 2.4rem) 'Montserrat', sans-serif;
}

.pe-stat span {
  color: var(--text3);
  font-size: .82rem;
}

.pe-note {
  display: flex;
  gap: .5rem;
  font-size: .82rem;
}

.pe-shell {
  display: grid;
  grid-template-columns: minmax(240px, 290px) minmax(0, 1fr);
  gap: clamp(1rem, 2vw, 1.8rem);
  margin-top: clamp(1rem, 2vw, 1.4rem);
}

.pe-side,
.pe-main,
.pe-card,
.pe-detail {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: color-mix(in srgb, var(--card) 82%, transparent);
  box-shadow: 0 18px 60px rgba(0,0,0,.16);
}

.pe-side {
  position: sticky;
  top: calc(clamp(64px, 6vw, 90px) + 1rem);
  align-self: start;
  display: grid;
  gap: .45rem;
  padding: .65rem;
}

.pe-filter {
  display: flex;
  align-items: center;
  gap: .7rem;
  width: 100%;
  padding: .75rem .85rem;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--text2);
  font: 800 .86rem 'Sora', sans-serif;
  text-align: left;
  cursor: pointer;
  transition: background .2s, border-color .2s, color .2s;
}

.pe-filter:hover,
.pe-filter.active {
  color: #34d399;
  background: rgba(34,197,94,.08);
  border-color: rgba(34,197,94,.25);
}

.pe-main {
  min-height: 620px;
  padding: clamp(1.1rem, 2vw, 1.7rem);
}

.pe-section-head {
  display: flex;
  justify-content: flex-start;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}

.pe-section-head h2 {
  margin: 0;
  color: var(--text1);
  font: 900 clamp(1.45rem, 2.4vw, 2.4rem)/1.05 'Montserrat', sans-serif;
  letter-spacing: -.04em;
}

.pe-section-head p {
  max-width: 920px;
  margin: .45rem 0 0;
  color: var(--text3);
  line-height: 1.7;
}

.pe-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .85rem;
}

.pe-course-summary-grid {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .85rem;
}

.pe-course-summary-grid-single {
  grid-template-columns: 1fr;
}

.pe-course-summary {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: color-mix(in srgb, var(--card) 88%, transparent);
  box-shadow: 0 18px 60px rgba(0,0,0,.16);
}

.pe-course-strip {
  height: 4px;
}

.pe-course-shell {
  display: grid;
  gap: .9rem;
  padding: 1rem;
  background:
    radial-gradient(circle at 100% 0, var(--pe-course-soft, rgba(34,197,94,.1)), transparent 34%);
}

.pe-course-head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: .85rem;
  align-items: center;
}

.pe-course-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.06);
  font-size: 1.7rem;
}

.pe-course-copy h3 {
  margin: 0 0 .24rem;
  color: var(--text1);
  font: 800 1.05rem/1.2 'Sora', sans-serif;
}

.pe-course-copy p,
.pe-course-lane span,
.pe-card-desc {
  margin: 0;
  color: var(--text3);
  line-height: 1.65;
}

.pe-course-open {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .72rem .95rem;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, #2563eb, #22c55e);
  color: #eff6ff;
  font: 800 .78rem 'Sora', sans-serif;
  cursor: pointer;
}

.pe-course-facts,
.pe-course-foot {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.pe-course-lane {
  flex: 1 1 220px;
  display: grid;
  gap: .18rem;
  padding: .8rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255,255,255,.04);
}

.pe-course-lane strong {
  color: var(--text1);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.pe-card {
  display: flex;
  flex-direction: column;
  gap: .85rem;
  min-height: 220px;
  padding: 1rem;
  text-align: left;
  color: inherit;
  cursor: pointer;
  transition: transform .2s, border-color .2s, background .2s;
  background:
    radial-gradient(circle at top right, var(--pe-card-soft, rgba(34,197,94,.1)), transparent 34%),
    color-mix(in srgb, var(--card) 82%, transparent);
}

.pe-card:hover {
  transform: translateY(-4px);
  border-color: rgba(34,197,94,.32);
  background: rgba(34,197,94,.055);
}

.pe-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .8rem;
}

.pe-card-icon {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: color-mix(in srgb, var(--pe-card-soft, rgba(34,197,94,.1)) 80%, transparent);
  border: 1px solid color-mix(in srgb, var(--pe-card-start, #34d399) 24%, transparent);
  font-size: 1.45rem;
}

.pe-card-kicker {
  padding: .34rem .6rem;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--pe-card-start, #34d399) 24%, transparent);
  color: color-mix(in srgb, var(--pe-card-start, #34d399) 85%, #fff 15%);
  background: color-mix(in srgb, var(--pe-card-soft, rgba(34,197,94,.1)) 88%, transparent);
  font: 700 .65rem 'JetBrains Mono', monospace;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.pe-card h3 {
  margin: 0;
  color: var(--text1);
  font-size: 1.04rem;
}

.pe-card > div > p {
  margin: .28rem 0 0;
  color: var(--text3);
  font-size: .82rem;
}

.pe-card-meta,
.pe-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin-top: auto;
}

.pe-chip {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .28rem .55rem;
  border-radius: 999px;
  color: var(--text2);
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  font: 700 .68rem 'JetBrains Mono', monospace;
}

.pe-detail {
  overflow: hidden;
  grid-column: 1 / -1;
}

.pe-detail-head {
  padding: 1.1rem;
  border-bottom: 1px solid var(--border);
  background: rgba(255,255,255,.035);
}

.pe-back {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  margin-bottom: .8rem;
  padding: .5rem .75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255,255,255,.04);
  color: var(--text2);
  font-weight: 800;
  cursor: pointer;
}

.pe-detail-title {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin: 0 0 .45rem;
  color: var(--text1);
  font: 900 clamp(1.35rem, 2.4vw, 2.25rem)/1.08 'Montserrat', sans-serif;
  letter-spacing: -.04em;
}

.pe-detail-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, .55fr);
  gap: 1rem;
  padding: clamp(1rem, 2vw, 1.5rem);
}

.pe-panel {
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  background: rgba(255,255,255,.035);
}

.pe-panel h3 {
  margin: 0 0 .8rem;
  color: var(--text1);
}

.pe-theory {
  color: var(--text2);
  line-height: 1.75;
  overflow-wrap: anywhere;
}

.pe-theory h2,
.pe-theory h3,
.pe-theory h4 {
  color: var(--text1);
  margin: 1rem 0 .55rem;
}

.pe-theory p,
.pe-theory li,
.pe-theory td,
.pe-theory th {
  color: var(--text2);
}

.pe-theory table {
  width: 100%;
  border-collapse: collapse;
  display: block;
  overflow-x: auto;
  margin: 1rem 0;
}

.pe-theory th,
.pe-theory td {
  border: 1px solid var(--border);
  padding: .65rem;
}

.pe-theory th {
  color: var(--text1);
  background: rgba(255,255,255,.06);
}

.pe-theory pre,
.pe-theory .code-block {
  max-width: 100%;
  overflow-x: auto;
  padding: 1rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,.28);
  color: var(--text1);
}

.pe-theory code,
.pe-example {
  font-family: 'JetBrains Mono', monospace;
}

.pe-theory svg {
  max-width: 100%;
  height: auto;
}

.meta-row,
.pe-theory .grid {
  max-width: 100%;
}

.meta-row,
.pe-question-list {
  display: grid;
  gap: .65rem;
}

.meta-pill,
.info-box,
.warning-box,
.tip-box,
.example-box,
.pe-question {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .85rem;
  background: rgba(255,255,255,.04);
}

.pe-question strong {
  display: block;
  color: var(--text1);
  margin-bottom: .35rem;
}

.pe-answer {
  margin-top: .45rem;
  font-size: .86rem;
}

.pe-example {
  white-space: pre-wrap;
  overflow-x: auto;
  padding: .9rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(0,0,0,.28);
  color: #a7f3d0;
  font-size: .82rem;
}

.pe-loading,
.pe-empty {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .7rem;
  min-height: 220px;
  padding: 1.5rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: rgba(255,255,255,.04);
  color: var(--text3);
  text-align: center;
}

.pe-loading span {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid rgba(34,197,94,.18);
  border-top-color: #34d399;
  animation: peSpin .8s linear infinite;
}

@keyframes peSpin {
  to { transform: rotate(360deg); }
}

@media (max-width: 1080px) {
  .pe-course-summary-grid,
  .pe-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .pe-hero,
  .pe-shell,
  .pe-detail-body {
    grid-template-columns: 1fr;
  }

  .pe-side {
    position: relative;
    top: auto;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .pe-course-head {
    grid-template-columns: auto 1fr;
  }

  .pe-course-open {
    grid-column: 1 / -1;
    width: fit-content;
  }
}

@media (max-width: 640px) {
  .pe-hero h1 {
    font-size: clamp(1.85rem, 12vw, 3rem);
  }

  .pe-course-summary-grid,
  .pe-stat-grid,
  .pe-grid,
  .pe-side {
    grid-template-columns: 1fr;
  }
}