/*
  A.T.G. PORTFOLYO - css/game.css
  Gizli sayfa: Kısa Devre (easter egg oyunu "Devre Yılanı"; js/game.js bu sınıfları kullanır).
  Kullanan sayfalar: pages/kisa-devre.html
  Bu dosyadaki bölümler: 18
  Sıra (HTML <link> sırası bozulmamalı): base → [sayfa dosyası] → utilities → print
  Bölüm numaraları eski tek-dosya düzeninden (style.css) korunmuştur; tam harita için css/base.css başına bakın.
*/

/* ==========================================================================
   18. GİZLİ SAYFA: KISA DEVRE (EASTER EGG OYUNU: "DEVRE YILANI")
   Sayfa: pages/kisa-devre.html, oyun: js/game.js. Girişi ana sayfadaki gizli Mors kodu (.secret-dots, §14).
   Oyun kutusu sayfadan izoledir: kendi PCB zemini, osiloskop ekranı ve komponent açıklaması vardır.
   Oyunun renkleri aşağıdaki --krt-* değişkenlerindendir; js/game.js bunları okuyup tahtayı/sembolleri boyar
   (koyu/açık tema geçişinde oyun kendiliğinden yeni renklere geçer). Osiloskop ekranı koyu temada koyu, açık temada gözü yormayan mat kemik beyazıdır.
   ========================================================================== */
.krt-page { padding-bottom: 80px; }

.krt-hero { text-align: center; margin: 44px auto 30px; padding: 0 20px; }
.krt-eyebrow { display: inline-flex; align-items: center; gap: 12px; font-family: monospace; font-size: 13px; letter-spacing: 2px; color: var(--accent-color); }
.krt-morse { display: inline-flex; gap: 6px; }
/* üç nokta ('S', "SÜRPRİZ"in baş harfi) sırayla yanar ve yanık kalır (bir kez): ana sayfadaki Mors kodunun yankısı */
.krt-morse i { display: block; width: 6px; height: 6px; border-radius: 50%; background: var(--accent-color); animation: krt-morse 0.5s ease-out both; }
.krt-morse i:nth-child(1) { animation-delay: 0.35s; }
.krt-morse i:nth-child(2) { animation-delay: 0.7s; }
.krt-morse i:nth-child(3) { animation-delay: 1.05s; }
@keyframes krt-morse {
    from { opacity: 0.18; transform: scale(0.8); box-shadow: none; }
    to   { opacity: 1;    transform: none;       box-shadow: 0 0 8px var(--accent-color); }
}
.krt-hero h1 {
    font-size: 40px; letter-spacing: 3px; margin: 10px 0 8px; color: var(--accent-color);
    text-shadow: 0 0 18px rgba(0, 230, 118, 0.25);
    animation: krt-power 1.1s ease-out 0.15s both;    /* açılışta bir kez, hafifçe "güç verilirken" titrer */
}
body.light-mode .krt-hero h1 { text-shadow: none; }
@keyframes krt-power { 0% { opacity: 0; } 10% { opacity: 1; } 16% { opacity: 0.55; } 24% { opacity: 1; } 32% { opacity: 0.8; } 40%, 100% { opacity: 1; } }
.krt-sub { max-width: 620px; margin: 0 auto; font-size: 16px; opacity: 0.8; line-height: 1.6; }

.krt-console {
    /* oyunun renkleri (koyu tema) */
    --krt-board: #0b1511;                       /* PCB zemini */
    --krt-trace: rgba(0, 230, 118, 0.1);        /* zemindeki dekoratif bakır izler */
    --krt-pad: rgba(0, 230, 118, 0.2);         /* pad, via ve kart kenarı */
    --krt-silk: rgba(210, 245, 226, 0.22);      /* serigrafi yazıları ve kutuları */
    --krt-dot: rgba(210, 245, 226, 0.07);       /* hücre merkez noktaları */
    --krt-tile: #0f1c16;                        /* komponent karosu / panel zemini */
    --krt-tile-line: rgba(255, 255, 255, 0.1);
    --krt-ink: #E3F1E9;
    --krt-hazard: #FF5252;                      /* ESD / aşırı gerilim ve genel arıza */
    --krt-blown: #E11D74;                       /* patlak kondansatör (elektrolit sızıntısı: koyu vişne/bordo-pembe) */
    --krt-fuse: #94A3B8;                        /* sigorta (metalik gri) */
    --krt-pot: #4ADE80;                         /* potansiyometre (zümrüt/kalibrasyon yeşili) */
    --krt-mosfet: #2DD4BF;                      /* MOSFET / transistör (turkuaz/camgöbeği) */
    --krt-r: #F2A23A;  --krt-c: #52A8FF;  --krt-led: #FFE45C;  --krt-l: #C28BFF;  --krt-ic: #D7DEE8;  --krt-mcu: #5CF2FF;
    --krt-op: #B8F04A;  --krt-opto: #8F9BFF;  --krt-emi: #FF5CD2;   /* özel etkili komponentler: opamp, optokuplör, EMI */
    --krt-emi-veil: #09060f;                    /* EMI etkinken tahtayı kaplayan örtü */
    --krt-surge: #FFC83D;                       /* gerilim dalgalanması (150 / 200 mA): kehribar */
    --krt-xtal: #FF9FCF;                        /* kristal osilatör (pembe kuvars) */
    --krt-scope: #06100b;                       /* osiloskop ekranı */
    --krt-scope-grid: rgba(0, 230, 118, 0.14);
    --krt-scope-trace: #3dffa0;
    --krt-scope-ink: #bff5d8;
    --krt-scope-bad: #ff6b6b;                   /* gürültü / arıza rengi */
    --krt-scope-vig: rgba(0, 0, 0, 0.45);       /* ekran kenarlarındaki kararma */

    position: relative;
    width: calc(100% - 40px); max-width: 1080px; margin: 0 auto; padding: 14px 18px 20px;
    background-color: var(--card-bg);
    background-image: linear-gradient(165deg, rgba(0, 230, 118, 0.035), transparent 38%);
    background-image: linear-gradient(165deg, color-mix(in srgb, var(--accent-color) 5%, transparent), transparent 38%);
    border: 1px solid var(--border-color); border-radius: 14px;
    box-shadow: var(--card-shadow-3d), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}
body.light-mode .krt-console {
    --krt-board: #dfe9e3;
    --krt-trace: rgba(5, 150, 105, 0.12);
    --krt-pad: rgba(5, 150, 105, 0.2);
    --krt-silk: rgba(20, 60, 40, 0.24);
    --krt-dot: rgba(20, 60, 40, 0.1);
    --krt-tile: #f6faf8;
    --krt-tile-line: rgba(15, 23, 42, 0.14);
    --krt-ink: #14281f;
    --krt-hazard: #D32F2F;
    --krt-blown: #9D174D;
    --krt-fuse: #475569;
    --krt-pot: #16A34A;
    --krt-mosfet: #0D9488;
    --krt-r: #B96A00;  --krt-c: #1C63C9;  --krt-led: #A88200;  --krt-l: #7B3FD0;  --krt-ic: #3F4F63;  --krt-mcu: #0A7F96;
    --krt-op: #4F7A00;  --krt-opto: #4448C9;  --krt-emi: #C2188F;
    --krt-emi-veil: #1d1627;
    --krt-surge: #B26A00;
    --krt-xtal: #B83280;
    /* osiloskop: bembeyaz değil, mat kemik beyazı; iz koyu yeşil, ızgara yeşilimsi gri (parlama yok) */
    --krt-scope: #E6E2D3;
    --krt-scope-grid: rgba(54, 84, 66, 0.2);
    --krt-scope-trace: #0B7A4B;
    --krt-scope-ink: #20372b;
    --krt-scope-bad: #C62828;
    --krt-scope-vig: rgba(92, 78, 40, 0.22);
    box-shadow: var(--card-shadow-3d), inset 0 1px 0 rgba(255, 255, 255, 0.85);
}

/* Üst şerit: modül numarası + oyun adı + LED (LED rengi oyunun durumunu gösterir) */
.krt-bar { display: flex; align-items: center; gap: 12px; padding: 2px 2px 14px; font-family: monospace; }
.krt-led { flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--accent-color); box-shadow: 0 0 8px var(--accent-color); transition: background 0.3s ease, box-shadow 0.3s ease; }
.krt-console[data-state="paused"] .krt-led { background: var(--krt-r); box-shadow: 0 0 8px var(--krt-r); }
.krt-console[data-state="over"] .krt-led { background: var(--krt-hazard); box-shadow: 0 0 8px var(--krt-hazard); }
.krt-bar__tag { font-size: 11px; font-weight: 700; letter-spacing: 2px; color: var(--accent-color); opacity: 0.8; }
.krt-bar__title { margin: 0; font-size: 13px; font-weight: 700; letter-spacing: 2px; color: var(--text-color); }
.krt-bar__hint { margin-left: auto; font-size: 11px; letter-spacing: 0.5px; opacity: 0.6; }

.krt-body {
    display: grid; grid-template-columns: minmax(0, 1fr) 296px; grid-template-rows: auto auto 1fr auto; align-items: start; gap: 12px 18px;
    grid-template-areas:
        "stage scope"
        "stage legend"
        "telemetry legend"
        "pad legend";
}

/* Tahta: PCB zemini. Izgara boyutunu (--krt-cols/--krt-rows) js/game.js yazar; yükseklik buradan en-boy oranıyla gelir. */
.krt-stage {
    --krt-cols: 24; --krt-rows: 16;
    grid-area: stage; justify-self: center;
    position: relative; width: 100%;
    max-width: 720px;
    min-width: min(100%, 300px);
    aspect-ratio: var(--krt-cols) / var(--krt-rows);
    background: var(--krt-board);
    border: 1px solid var(--border-color); border-radius: 10px; overflow: hidden;
    box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.22);
    touch-action: none; user-select: none; -webkit-user-select: none; -webkit-tap-highlight-color: transparent;
}
/* Oyun başlamamışken / duraklatılmışken / bittiğinde tahtaya dokunarak sayfayı rahatça kaydırabilsin */
.krt-console:not([data-state="playing"]) .krt-stage { touch-action: pan-y; }
.krt-stage:focus-visible { outline: 2px solid var(--accent-color); outline-offset: 3px; }
.krt-board { position: absolute; inset: 0; display: block; width: 100%; height: 100%; }

/* Canlı Devre Telemetrisi & Unvan İlerleme Paneli (PCB tahtasının altındaki alanı doldurur ve sağ sütunla hizalar) */
.krt-telemetry {
    grid-area: telemetry; justify-self: center; align-self: stretch;
    width: 100%; max-width: 720px;
    display: flex; flex-direction: column; justify-content: space-between; gap: 9px;
    padding: 11px 14px;
    font-family: monospace; color: var(--krt-ink);
    background: var(--krt-tile);
    background-image: linear-gradient(180deg, rgba(0, 230, 118, 0.03), transparent 65%);
    border: 1px solid var(--border-color); border-radius: 10px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 6px 18px -12px rgba(0, 0, 0, 0.45);
}
body.light-mode .krt-telemetry {
    background-image: linear-gradient(180deg, rgba(5, 150, 105, 0.045), transparent 65%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8), 0 4px 14px -10px rgba(15, 23, 42, 0.12);
}
.krt-tel__head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.krt-tel__rank-box { display: flex; align-items: baseline; gap: 9px; min-width: 0; }
.krt-tel__tag {
    flex: none; padding: 1px 6px; font-size: 9.5px; font-weight: 700; letter-spacing: 1.4px;
    color: var(--accent-color); border: 1px solid color-mix(in srgb, var(--accent-color) 42%, transparent);
    background: color-mix(in srgb, var(--accent-color) 10%, transparent); border-radius: 4px;
}
.krt-tel__rank { font-size: 12px; font-weight: 700; letter-spacing: 0.3px; color: var(--krt-ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.krt-tel__rank.is-neg { color: var(--krt-hazard); }          /* skor < 0: «Ters Bağlı Çaylak» */
.krt-tel__next { font-size: 11px; font-weight: 700; letter-spacing: 1px; color: var(--accent-color); opacity: 0.9; white-space: nowrap; }

.krt-tel__bar {
    position: relative; height: 6px; overflow: hidden;
    background: color-mix(in srgb, var(--krt-board) 85%, #000 15%);
    border: 1px solid var(--krt-tile-line); border-radius: 999px;
}
body.light-mode .krt-tel__bar { background: rgba(20, 60, 40, 0.1); }
.krt-tel__fill {
    display: block; width: var(--p, 0%); height: 100%;
    background: linear-gradient(90deg, color-mix(in srgb, var(--accent-color) 65%, #fff 10%), var(--accent-color));
    box-shadow: 0 0 10px var(--accent-color);
    border-radius: 999px; transition: width 0.28s ease;
}
body.light-mode .krt-tel__fill { box-shadow: none; }

.krt-tel__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; }   /* 6 modül (v2.1: XTAL): 3 × 2 */
.krt-tel__tag { white-space: nowrap; }
.krt-tel__mod {
    --mod-col: var(--accent-color);
    display: flex; flex-direction: column; justify-content: space-between; gap: 4px;
    padding: 6px 8px;
    background: color-mix(in srgb, var(--krt-board) 65%, var(--krt-tile) 35%);
    border: 1px solid var(--krt-tile-line); border-radius: 7px;
    transition: border-color 0.25s ease, background-color 0.25s ease, box-shadow 0.25s ease;
}
body.light-mode .krt-tel__mod { background: rgba(255, 255, 255, 0.68); }
.krt-tel__mod[data-mod="fuse"]   { --mod-col: var(--krt-fuse); }
.krt-tel__mod[data-mod="mosfet"] { --mod-col: var(--krt-mosfet); }
.krt-tel__mod[data-mod="opto"]   { --mod-col: var(--krt-opto); }
.krt-tel__mod[data-mod="gain"]   { --mod-col: var(--krt-op); }
.krt-tel__mod[data-mod="fault"]  { --mod-col: var(--accent-color); }
.krt-tel__mod[data-mod="xtal"]   { --mod-col: var(--krt-xtal); }
.krt-tel__mod.is-pulse { animation: krt-xtal-pulse 0.9s ease-out; }   /* kristal alındığı an: modül bir kez parlar */
@keyframes krt-xtal-pulse { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--mod-col) 70%, transparent), inset 0 0 14px color-mix(in srgb, var(--mod-col) 35%, transparent); } 100% { box-shadow: 0 0 0 10px transparent, inset 0 0 12px color-mix(in srgb, var(--mod-col) 12%, transparent); } }
.krt-tel__mod.is-on, .krt-tel__mod.is-active {
    border-color: color-mix(in srgb, var(--mod-col) 68%, transparent);
    background: color-mix(in srgb, var(--mod-col) 10%, var(--krt-board));
    box-shadow: inset 0 0 12px color-mix(in srgb, var(--mod-col) 12%, transparent);
}
body.light-mode .krt-tel__mod.is-on, body.light-mode .krt-tel__mod.is-active {
    background: color-mix(in srgb, var(--mod-col) 11%, #ffffff);
}
.krt-tel__mod.is-bad {
    --mod-col: var(--krt-hazard);
    border-color: color-mix(in srgb, var(--krt-hazard) 70%, transparent);
    background: color-mix(in srgb, var(--krt-hazard) 11%, var(--krt-board));
}
body.light-mode .krt-tel__mod.is-bad {
    background: color-mix(in srgb, var(--krt-hazard) 10%, #ffffff);
}
.krt-tel__mod-top { display: flex; align-items: center; gap: 5px; }
.krt-tel__dot {
    flex: none; width: 6px; height: 6px; border-radius: 50%;
    background: var(--mod-col); opacity: 0.3;
    transition: opacity 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.krt-tel__mod.is-on .krt-tel__dot, .krt-tel__mod.is-active .krt-tel__dot, .krt-tel__mod.is-bad .krt-tel__dot {
    opacity: 1; transform: scale(1.12); box-shadow: 0 0 7px var(--mod-col);
}
.krt-tel__code { font-size: 9.5px; font-weight: 700; letter-spacing: 0.8px; opacity: 0.72; white-space: nowrap; }
.krt-tel__val { margin-left: auto; font-size: 9.5px; font-weight: 700; letter-spacing: 0.4px; color: var(--mod-col); white-space: nowrap; }
.krt-tel__name { font-family: sans-serif; font-size: 10.5px; font-weight: 600; opacity: 0.78; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.krt-tel__meter { height: 3px; border-radius: 999px; overflow: hidden; background: rgba(128, 128, 128, 0.18); }
.krt-tel__meter span { display: block; width: var(--m, 0%); height: 100%; background: var(--mod-col); border-radius: 999px; transition: width 0.15s linear; }

.krt-tel__log {
    display: flex; align-items: center; gap: 8px;
    padding: 5px 9px; font-size: 11px; line-height: 1.35;
    background: color-mix(in srgb, var(--krt-board) 82%, #000 18%);
    border: 1px solid var(--krt-tile-line); border-radius: 6px;
}
body.light-mode .krt-tel__log { background: rgba(20, 60, 40, 0.06); }
.krt-tel__prompt { flex: none; font-weight: 700; letter-spacing: 0.8px; color: var(--accent-color); }
.krt-tel__msg { min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; opacity: 0.88; }
.krt-tel__log[data-tone="good"] .krt-tel__msg { color: var(--accent-color); opacity: 1; }
.krt-tel__log[data-tone="bad"]  .krt-tel__msg { color: var(--krt-hazard); opacity: 1; }
.krt-tel__log[data-tone="warn"] .krt-tel__msg { color: var(--krt-r); opacity: 1; }

/* Tahtanın üstünde kısa bilgi şeridi (ör. mikrodenetleyici belirince, opamp kazanç rozeti vb.).
   SAYDAM: arkadan geçen yılan ve komponentler şeridin altında da görünür (iki temada da). Okunurluk için bulanıklaştırma (backdrop-filter)
   kullanılmaz, çünkü telefonda pahalıdır; bunun yerine yazıya tahta renginde ince bir hale verilir (koyu temada koyu, açık temada açık).
   Saydamlığı ayarlamak için arka plandaki yüzdeyi (34%) değiştir: küçültürsen daha saydam, büyütürsen daha dolu olur.
   width: max-content: şerit left: 50% ile konumlandığı için aksi hâlde en fazla tahtanın yarısı kadar genişleyip 3-4 satıra bölünür. */
.krt-banner {
    position: absolute; left: 50%; top: 10px; width: max-content; max-width: calc(100% - 24px);
    transform: translate(-50%, -8px);
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 5px 12px; text-align: center;
    font: 700 11px/1.4 monospace; letter-spacing: 1px;
    color: var(--krt-mcu);
    background: rgba(15, 28, 22, 0.34); background: color-mix(in srgb, var(--krt-tile) 34%, transparent);
    border: 1px solid currentColor; border: 1px solid color-mix(in srgb, currentColor 60%, transparent); border-radius: 6px;
    text-shadow: 0 0 2px var(--krt-board), 0 0 4px var(--krt-board), 0 0 8px var(--krt-board);
    opacity: 0; pointer-events: none; transition: opacity 0.25s ease, transform 0.25s ease;
}
.krt-banner.is-on { opacity: 1; transform: translate(-50%, 0); }
.krt-banner[data-kind="gain"]   { color: var(--krt-op); }
.krt-banner[data-kind="opto"]   { color: var(--krt-opto); }
.krt-banner[data-kind="fuse"]   { color: var(--krt-fuse); }
.krt-banner[data-kind="mosfet"] { color: var(--krt-mosfet); }
.krt-banner[data-kind="pot"]    { color: var(--krt-pot); }
.krt-banner[data-kind="emi"]    { color: var(--krt-emi); }
.krt-banner[data-kind="esd"]    { color: var(--krt-hazard); }
.krt-banner[data-kind="blown"]  { color: var(--krt-blown); }
.krt-banner[data-kind="rev"]    { color: var(--krt-hazard); }
.krt-banner[data-kind="surge"]  { color: var(--krt-surge); }
.krt-banner[data-kind="xtal"]   { color: var(--krt-xtal); }
.krt-banner__badge {
    display: inline-flex; align-items: center; gap: 3px;
    padding: 1px 5px; border: 1px solid currentColor; border-radius: 4px;
    background: color-mix(in srgb, currentColor 16%, transparent);
    font-size: 11px; font-weight: 700; letter-spacing: 0.4px; white-space: nowrap;
}
.krt-banner__svg { width: 13px; height: 13px; flex: none; stroke: currentColor; fill: none; }

/* Başlangıç / duraklatma / bitiş paneli: tahtanın üstünde terminal penceresi (içeriği js/game.js yazar) */
.krt-overlay {
    position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; padding: 14px;
    background: rgba(6, 14, 10, 0.66);
    background: color-mix(in srgb, var(--krt-board) 66%, transparent);
    opacity: 0; visibility: hidden; transition: opacity 0.3s ease, visibility 0s linear 0.3s;
}
.krt-overlay.is-on { opacity: 1; visibility: visible; transition: opacity 0.3s ease; }
.krt-term {
    width: 100%; max-width: 430px; padding: 15px 18px 16px; text-align: left;
    font-family: monospace; font-size: 13px; line-height: 1.65; color: var(--krt-ink);
    background: var(--krt-tile); border: 1px solid var(--krt-tile-line); border-left: 3px solid var(--accent-color); border-radius: 8px;
    box-shadow: 0 20px 44px -20px rgba(0, 0, 0, 0.65);
    cursor: pointer; touch-action: manipulation; -webkit-tap-highlight-color: transparent;
}
.krt-term.is-bad { border-left-color: var(--krt-hazard); }
.krt-term__line { animation: krt-line 0.4s cubic-bezier(0.2, 0.8, 0.2, 1) both; animation-delay: calc(var(--i, 0) * 120ms); }
.krt-term.is-static .krt-term__line { animation: none; }
@keyframes krt-line { from { opacity: 0; transform: translateY(5px); } }
.krt-term__title { font-size: 15px; font-weight: 700; letter-spacing: 1.5px; color: var(--accent-color); }
.krt-term.is-bad .krt-term__title { color: var(--krt-hazard); }
.krt-term__sub { opacity: 0.78; }
.krt-term__row { display: flex; align-items: baseline; gap: 8px; }
.krt-term__lead { flex: 1; min-width: 12px; border-bottom: 1px dotted currentColor; opacity: 0.3; transform: translateY(-3px); }
.krt-term__val { font-weight: 700; color: var(--accent-color); }
.krt-term__new { margin-left: 8px; padding: 0 6px; font-size: 11px; font-weight: 700; letter-spacing: 1px; color: var(--bg-color); background: var(--accent-color); border-radius: 4px; }
.krt-term__rank { margin-top: 6px; font-weight: 700; color: var(--krt-ink); }
.krt-term__cta { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 14px; margin-top: 13px; }
.krt-term__hint { font-size: 12px; opacity: 0.7; }
.krt-caret { display: inline-block; width: 7px; height: 14px; margin-left: 4px; vertical-align: -2px; background: var(--accent-color); animation: krt-blink 1s steps(1) infinite; }
@keyframes krt-blink { 50% { opacity: 0; } }
.krt-btn {
    padding: 8px 16px; font: 700 13px monospace; letter-spacing: 1px; cursor: pointer;
    color: var(--bg-color); background: var(--accent-color); border: 1px solid var(--accent-color); border-radius: 6px;
    transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.krt-btn:hover, .krt-btn:focus-visible { box-shadow: 0 0 16px var(--accent-color); transform: translateY(-1px); }

/* Osiloskop: sinyal akarken skor burada görünür. Koyu temada koyu ekran, açık temada mat kemik beyazı (renkler --krt-scope-*). */
.krt-scope {
    grid-area: scope; position: relative; height: 148px; overflow: hidden;
    background: var(--krt-scope); border: 1px solid var(--border-color); border-radius: 10px;
    box-shadow: inset 0 0 28px rgba(0, 0, 0, 0.6);
}
.krt-scope__cv { display: block; width: 100%; height: 100%; }
.krt-hud {
    position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: space-between;
    padding: 8px 12px 7px; pointer-events: none;
    font-family: monospace; color: var(--krt-scope-ink); text-shadow: 0 0 8px rgba(61, 255, 160, 0.35);
    background: linear-gradient(180deg, rgba(6, 16, 11, 0.7), transparent 52%);
}
.krt-hud__top { display: flex; justify-content: space-between; font-size: 10px; letter-spacing: 2px; opacity: 0.8; }
.krt-hud__label b { font-weight: 700; color: #fff; letter-spacing: 1px; }
.krt-hud__mid { display: flex; align-items: baseline; gap: 6px; }
.krt-hud__score { font-size: 40px; font-weight: 700; line-height: 1; letter-spacing: 2px; color: #d8ffe9; text-shadow: 0 0 14px rgba(61, 255, 160, 0.55); }
.krt-hud__score.is-neg { color: #ff8a80; text-shadow: 0 0 14px rgba(255, 82, 82, 0.6); }          /* eksi skor (ters beslem) */
.krt-hud__unit { font-size: 13px; opacity: 0.7; }
.krt-hud__foot { display: flex; justify-content: space-between; gap: 8px; font-size: 10px; letter-spacing: 1.5px; opacity: 0.85; }
.krt-hud__state.is-warn { color: #FFC857; }
.krt-hud__state.is-bad { color: #FF6B6B; }

body.light-mode .krt-scope { box-shadow: inset 0 0 22px rgba(92, 78, 40, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.55); }
body.light-mode .krt-hud { text-shadow: none; background: linear-gradient(180deg, rgba(230, 226, 211, 0.8), transparent 55%); }
body.light-mode .krt-hud__label b { color: #0d1d15; }
body.light-mode .krt-hud__score { color: #10231a; text-shadow: none; }
body.light-mode .krt-hud__score.is-neg { color: #C62828; text-shadow: none; }
body.light-mode .krt-hud__state.is-warn { color: #9A6200; }
body.light-mode .krt-hud__state.is-bad { color: #C62828; }

/* Etkin özel etkilerin rozetleri (js/game.js ekler): kalan süre yazısı + dolu çubuk */
.krt-hud__fx { display: flex; flex-direction: column; align-items: flex-end; align-self: center; gap: 3px; margin-left: auto; }
.krt-chip {
    --p: 100%; padding: 1px 6px; font: 700 10px/1.5 monospace; letter-spacing: 1px; white-space: nowrap;
    border: 1px solid currentColor; border-radius: 4px;
    background: linear-gradient(90deg, color-mix(in srgb, currentColor 28%, transparent) var(--p), transparent var(--p)),
                color-mix(in srgb, var(--krt-scope) 86%, transparent);          /* izin üstünde okunabilsin diye hafif zemin */
}
.krt-chip--gain   { color: var(--krt-op); }
.krt-chip--opto   { color: var(--krt-opto); }
.krt-chip--fuse   { color: var(--krt-fuse); }
.krt-chip--mosfet { color: var(--krt-mosfet); }
.krt-chip--emi    { color: var(--krt-emi); }
.krt-chip--esd    { color: var(--krt-hazard); }
.krt-chip--blown  { color: var(--krt-blown); }
.krt-chip--rev    { color: var(--krt-hazard); }          /* ters beslem: skor < 0 (süresiz; kalan süre çubuğu tam dolu) */
.krt-chip--surge  { color: var(--krt-surge); }           /* gerilim dalgalanması: SURGE ×2 · kalan sn */
.krt-chip.is-ending { animation: krt-blink 0.5s steps(1) infinite; }

/* Komponent açıklaması: semboller küçük canvas'lara js/game.js ile çizilir (tahtadakiyle birebir aynı çizim) */
.krt-legend { grid-area: legend; display: grid; gap: 1px; margin: 0; padding: 0; list-style: none; align-self: stretch; align-content: space-between; margin-bottom: 12px; }   /* 15 öğe (v2.1): liste telemetrinin altına kadar uzar, satırlar eşit aralıkla dağılır (alt hiza hep tutar) */
.krt-legend__item { display: grid; grid-template-columns: 30px minmax(0, 1fr) auto; align-items: center; gap: 9px; padding: 0.5px 8px 0.5px 4px; border: 1px solid transparent; border-radius: 7px; }
.krt-legend__item--bad { border-color: rgba(255, 82, 82, 0.28); background: rgba(255, 82, 82, 0.05); }
body.light-mode .krt-legend__item--bad { border-color: rgba(211, 47, 47, 0.3); background: rgba(211, 47, 47, 0.05); }
.krt-sym { display: block; width: 30px; height: 30px; }
.krt-legend__text { display: block; min-width: 0; }
.krt-legend__name { display: block; font-size: 12.5px; font-weight: 600; line-height: 1.22; }
.krt-legend__note { display: block; font-family: monospace; font-size: 10px; line-height: 1.24; opacity: 0.62; }
.krt-legend__pts { font-family: monospace; font-size: 13.5px; font-weight: 700; color: var(--accent-color); }
.krt-legend__item--bad .krt-legend__pts { color: var(--krt-hazard); }
.krt-legend__item:has([data-sym="blown"]) { border-color: rgba(225, 29, 116, 0.32); background: rgba(225, 29, 116, 0.06); }
body.light-mode .krt-legend__item:has([data-sym="blown"]) { border-color: rgba(157, 23, 77, 0.3); background: rgba(157, 23, 77, 0.05); }
.krt-legend__item:has([data-sym="blown"]) .krt-legend__pts { color: var(--krt-blown); }

/* Dokunmatik Kontrol Dock'u (PCB Analog Joystick + dört geniş bölgeli TUŞLAR modu):
   Bilgisayarda gizlidir; telefon ve dokunmatik ekranlarda PCB tahtasının hemen altında yer alır.
   Üst köşelerdeki kontrol şeridi (.krt-pad__top) ile alttaki yönlendirme arenası (.krt-pad__arena) birbirinden ayrılmıştır. */
.krt-pad {
    grid-area: pad; display: none; justify-self: center;
    width: 100%; max-width: 720px;
    flex-direction: column; align-items: stretch; gap: 10px;
    padding: 8px 10px 12px;
    background: var(--krt-tile);
    background-image: radial-gradient(circle at 50% 62%, color-mix(in srgb, var(--accent-color) 8%, transparent), transparent 65%);
    border: 1px solid var(--border-color); border-radius: 12px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 8px 20px -12px rgba(0, 0, 0, 0.5);
    touch-action: none; user-select: none; -webkit-user-select: none; -webkit-tap-highlight-color: transparent;
}
body.light-mode .krt-pad {
    background-image: radial-gradient(circle at 50% 62%, rgba(5, 150, 105, 0.08), transparent 65%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85), 0 6px 16px -10px rgba(15, 23, 42, 0.12);
}

/* Kontrol Dock'u Üst Köşe Şeridi: Mod Değiştirme (sol üst köşe) ve Duraklat/Başlat (sağ üst köşe).
   Orta kısım (Yukarı tuşunun hizası) bilerek boş bırakılmıştır; yönlendirme sırasında başparmak buraya değmez. */
.krt-pad__top {
    display: flex; align-items: center; justify-content: space-between; gap: 8px;
    padding-bottom: 7px;
    border-bottom: 1px dashed var(--krt-tile-line);
}
.krt-pad__silk {
    font-family: monospace; font-size: 9.5px; font-weight: 700; letter-spacing: 2px;
    color: var(--krt-ink); opacity: 0.32; pointer-events: none;
}
.krt-pad__pill {
    display: inline-flex; align-items: center; justify-content: center; gap: 5px;
    padding: 5px 10px; border-radius: 7px; cursor: pointer;
    font-family: monospace; font-size: 10.5px; font-weight: 700; letter-spacing: 0.6px; white-space: nowrap;
    color: var(--accent-color);
    background: color-mix(in srgb, var(--krt-board) 72%, var(--krt-tile) 28%);
    border: 1px solid var(--krt-tile-line);
    box-shadow: 0 3px 8px -4px rgba(0, 0, 0, 0.45);
    touch-action: manipulation; -webkit-tap-highlight-color: transparent;
    transition: border-color 0.15s ease, transform 0.1s ease;
}
body.light-mode .krt-pad__pill { background: rgba(255, 255, 255, 0.85); }
.krt-pad__pill:active { transform: scale(0.95); border-color: var(--accent-color); }
.krt-pad__pill-lbl { font-size: 9.5px; color: var(--krt-ink); opacity: 0.62; }
.krt-pad__pill-ico { font-size: 11px; opacity: 0.85; }
.krt-pad__pill--act.is-warn { color: var(--krt-r); border-color: color-mix(in srgb, var(--krt-r) 45%, var(--krt-tile-line)); }
.krt-pad__pill--act.is-bad  { color: var(--krt-hazard); border-color: color-mix(in srgb, var(--krt-hazard) 45%, var(--krt-tile-line)); }

/* Yönlendirme Arenası: joystick ortada durur; TUŞLAR modunda dört bölge arenanın tamamını doldurur */
.krt-pad__arena {
    display: flex; align-items: center; justify-content: center;
    width: 100%; padding: 2px 0;
}

/* Mod 1: 4-Eksen Kilitli PCB Analog Thumb Joystick */
.krt-joy {
    --jx: 0px; --jy: 0px;
    --joy-col: var(--accent-color);
    position: relative; width: 136px; height: 136px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: radial-gradient(circle at 50% 50%, color-mix(in srgb, var(--krt-board) 92%, #000 8%) 0%, var(--krt-board) 72%, color-mix(in srgb, var(--joy-col) 12%, var(--krt-tile)) 100%);
    border: 1.5px solid color-mix(in srgb, var(--joy-col) 38%, var(--border-color));
    box-shadow: inset 0 4px 14px rgba(0, 0, 0, 0.55), 0 0 0 3px color-mix(in srgb, var(--joy-col) 7%, transparent);
    touch-action: none; cursor: grab;
}
body.light-mode .krt-joy {
    background: radial-gradient(circle at 50% 50%, #cfdcd4 0%, #dfe9e3 72%, color-mix(in srgb, var(--joy-col) 14%, #fff) 100%);
    box-shadow: inset 0 3px 10px rgba(15, 23, 42, 0.16), 0 0 0 3px rgba(5, 150, 105, 0.08);
}
.krt-joy.is-esd { --joy-col: var(--krt-hazard); }
.krt-joy.is-active {
    border-color: var(--joy-col);
    box-shadow: inset 0 4px 14px rgba(0, 0, 0, 0.6), 0 0 16px color-mix(in srgb, var(--joy-col) 28%, transparent);
}
/* İç PCB nişangah halkası ve eksen çizgileri */
.krt-joy__ring {
    position: absolute; inset: 7px; border-radius: 50%;
    border: 1px dashed color-mix(in srgb, var(--joy-col) 28%, transparent);
    pointer-events: none;
}
.krt-joy__ring::before, .krt-joy__ring::after {
    content: ''; position: absolute; background: color-mix(in srgb, var(--joy-col) 16%, transparent);
}
.krt-joy__ring::before { left: 50%; top: 18%; bottom: 18%; width: 1px; transform: translateX(-0.5px); }
.krt-joy__ring::after  { top: 50%; left: 18%; right: 18%; height: 1px; transform: translateY(-0.5px); }

.krt-joy__dir {
    position: absolute; width: 24px; height: 24px;
    display: flex; align-items: center; justify-content: center;
    color: var(--joy-col); opacity: 0.38;
    transition: opacity 0.08s ease, transform 0.08s ease, filter 0.08s ease;
}
.krt-joy__dir svg { width: 18px; height: 18px; fill: currentColor; }
.krt-joy__dir--up    { top: 1px; left: 50%; transform: translateX(-50%); }
.krt-joy__dir--down  { bottom: 1px; left: 50%; transform: translateX(-50%); }
.krt-joy__dir--left  { left: 1px; top: 50%; transform: translateY(-50%); }
.krt-joy__dir--right { right: 1px; top: 50%; transform: translateY(-50%); }

.krt-joy[data-dir="up"]    .krt-joy__dir--up,
.krt-joy[data-dir="down"]  .krt-joy__dir--down,
.krt-joy[data-dir="left"]  .krt-joy__dir--left,
.krt-joy[data-dir="right"] .krt-joy__dir--right {
    opacity: 1; filter: drop-shadow(0 0 6px var(--joy-col));
}
.krt-joy[data-dir="up"]    .krt-joy__dir--up    { transform: translateX(-50%) scale(1.22); }
.krt-joy[data-dir="down"]  .krt-joy__dir--down  { transform: translateX(-50%) scale(1.22); }
.krt-joy[data-dir="left"]  .krt-joy__dir--left  { transform: translateY(-50%) scale(1.22); }
.krt-joy[data-dir="right"] .krt-joy__dir--right { transform: translateY(-50%) scale(1.22); }

/* Hareketli Başparmak Topuzu (Thumbstick) */
.krt-joy__stick {
    position: relative; width: 54px; height: 54px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    background: radial-gradient(circle at 38% 35%, color-mix(in srgb, var(--krt-tile) 75%, #fff 25%), var(--krt-tile) 68%, #07110c 100%);
    border: 2px solid var(--joy-col);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.55), inset 0 1px 2px rgba(255, 255, 255, 0.25);
    transform: translate3d(var(--jx, 0px), var(--jy, 0px), 0);
    transition: transform 0.18s cubic-bezier(0.22, 1.35, 0.36, 1), box-shadow 0.12s ease;
    pointer-events: none; will-change: transform;
}
body.light-mode .krt-joy__stick {
    background: radial-gradient(circle at 38% 35%, #ffffff, #eef5f1 68%, #c7d8ce 100%);
    box-shadow: 0 5px 12px rgba(15, 23, 42, 0.22), inset 0 1px 2px #ffffff;
}
.krt-joy.is-active .krt-joy__stick {
    transition: none;
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.65), 0 0 14px color-mix(in srgb, var(--joy-col) 48%, transparent);
}
.krt-joy__cap {
    width: 18px; height: 18px; border-radius: 50%;
    background: radial-gradient(circle, var(--joy-col) 0%, color-mix(in srgb, var(--joy-col) 45%, transparent) 100%);
    border: 1px solid rgba(255, 255, 255, 0.35);
    box-shadow: 0 0 8px var(--joy-col);
}

/* Mod 2: TUŞLAR — pedi baştan sona dolduran dört geniş kama bölge (yukarı / aşağı / sol / sağ).
   Bölge çokgenlerini js/game.js (layoutDpad) ölçüye göre çizer; aralarında görünür boşluk kalır, ortada küçük bir elmas boşluk oluşur.
   Dokunuşu yalnızca .krt-dpad'in kendisi alır; düğmeler klavye ve ekran okuyucu içindir. */
.krt-dpad {
    --dpad-col: var(--accent-color);
    display: none; position: relative;
    width: 100%; max-width: 460px; height: 150px;
    touch-action: none; cursor: pointer;
}
.krt-dpad::before { content: ''; position: absolute; inset: -6px -4px; }      /* kenara yakın dokunuşlar da en yakın bölgeye gider */
.krt-dpad.is-esd { --dpad-col: var(--krt-hazard); }
.krt-dpad { --zone-fill: color-mix(in srgb, var(--dpad-col) 7%, color-mix(in srgb, var(--krt-board) 55%, var(--krt-tile) 45%)); }
body.light-mode .krt-dpad { --zone-fill: color-mix(in srgb, var(--dpad-col) 5%, #ffffff); }
.krt-pad[data-mode="dpad"] .krt-joy  { display: none; }
.krt-pad[data-mode="dpad"] .krt-dpad { display: block; }
.krt-dpad__shapes { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.krt-zone {
    fill: var(--zone-fill);
    stroke: color-mix(in srgb, var(--dpad-col) 34%, var(--border-color)); stroke-width: 1.5; stroke-linejoin: round;
    transition: fill 0.08s ease, stroke 0.08s ease;
}
.krt-zone.is-pressed {
    fill: var(--dpad-col); stroke: var(--dpad-col);
    filter: drop-shadow(0 0 7px var(--dpad-col));
}
.krt-dpad__hub {
    position: absolute; left: 50%; top: 50%; width: 7px; height: 7px; margin: -3.5px 0 0 -3.5px;
    border-radius: 50%; background: var(--dpad-col); opacity: 0.32; pointer-events: none;
}
.krt-pad__btn {
    position: absolute; width: 44px; height: 44px; margin: -22px 0 0 -22px;
    display: flex; align-items: center; justify-content: center;
    color: var(--dpad-col); background: none; border: 0; padding: 0; border-radius: 12px;
    pointer-events: none; -webkit-tap-highlight-color: transparent;
    transition: color 0.08s ease;
}
.krt-pad__btn--up    { left: 50%; top: 21%; }
.krt-pad__btn--down  { left: 50%; top: 79%; }
.krt-pad__btn--left  { left: 16%; top: 50%; }
.krt-pad__btn--right { left: 84%; top: 50%; }
.krt-pad__btn svg { width: 28px; height: 28px; fill: currentColor; pointer-events: none; }
.krt-pad__btn.is-pressed { color: var(--bg-color); }
.krt-pad__btn:focus-visible { outline: 2px solid var(--dpad-col); outline-offset: 1px; }
@media (pointer: coarse) {
    .krt-pad { display: flex; }
}

.krt-links { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; margin: 28px 20px 0; }
.krt-sr { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* Orta genişlik ve telefon: tek sütun.
   ÖNEMLİ: Kontrol paneli (pad) doğrudan PCB tahtasının (stage) hemen altındadır; telemetri terminali onun altına alınmıştır! */
@media (max-width: 959px) {
    .krt-body {
        grid-template-columns: minmax(0, 1fr);
        grid-template-rows: auto;
        grid-template-areas:
            "scope"
            "stage"
            "pad"
            "telemetry"
            "legend";
    }
    .krt-pad { display: flex; }
    .krt-legend { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px; }
    .krt-tel__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
    /* Oyun sayfasında sol altta yüzen "Yukarı Çık" butonu kontrollerin/terminalin üstünü kapatmasın */
    body:has(.krt-console) #scrollTopBtn { display: none !important; }
    .krt-page { padding-bottom: 44px; }
    .krt-hero { margin: 16px auto 14px; padding: 0 14px; }
    .krt-hero h1 { font-size: 26px; margin: 6px 0 4px; }
    .krt-sub { font-size: 13.5px; line-height: 1.45; }
    .krt-console { width: calc(100% - 16px); padding: 9px 10px 14px; border-radius: 12px; }
    .krt-bar { padding: 0 2px 8px; gap: 8px; }
    .krt-bar__hint { display: none; }
    .krt-body { gap: 8px; }
    /* Osiloskop + PCB Tahtası + Joystick tek telefon ekranına kaydırmasız sığar */
    .krt-scope { height: 84px; }
    .krt-hud { padding: 5px 10px 4px; }
    .krt-hud__score { font-size: 26px; }
    .krt-hud__fx { flex-direction: row; flex-wrap: wrap; justify-content: flex-end; gap: 3px; max-width: 66%; }
    .krt-chip { font-size: 9px; padding: 0 5px; line-height: 1.4; }
    .krt-pad { padding: 7px 10px 10px; gap: 8px; }
    .krt-joy { width: 128px; height: 128px; }
    .krt-joy__stick { width: 50px; height: 50px; }
    .krt-dpad { height: 146px; }
    .krt-telemetry { padding: 9px 10px; gap: 7px; }
    .krt-tel__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 5px; }
    .krt-tel__tag-x { display: none; }   /* telefonda yalnızca "BUS YOLU": unvan ve mA tek satıra sığsın */
    .krt-legend { gap: 4px; }
    .krt-legend__item { grid-template-columns: 28px minmax(0, 1fr) auto; gap: 7px; padding: 2px 7px 2px 4px; }
    .krt-sym { width: 28px; height: 28px; }
    .krt-legend__name { font-size: 11.5px; }
    .krt-legend__note { display: none; }
    .krt-term { padding: 12px 13px 13px; font-size: 11.5px; line-height: 1.55; }
    .krt-banner { padding: 4px 10px; font-size: 10px; letter-spacing: 0.4px; }   /* uzun afişler (EMI, optokuplör) telefonda en fazla iki satır */
}
@media (max-width: 480px) {
    .krt-legend { grid-template-columns: minmax(0, 1fr); }   /* telefonda tek sütun: uzun adlar (Mikrodenetleyici) puanla çakışmaz */
}
@media (prefers-reduced-motion: reduce) {
    .krt-morse i, .krt-hero h1, .krt-term__line, .krt-caret, .krt-chip.is-ending { animation: none; }
    .krt-overlay, .krt-banner, .krt-btn, .krt-tel__fill, .krt-tel__meter span, .krt-joy__stick, .krt-zone, .krt-pad__btn { transition: none; }
}