/* ===========================================================
   BİY.9.1.1 — 3 Sütunlu Interaktif Sayfa CSS
   =========================================================== */

/* Kazanım Banner */
.kazanim-banner {
    background: var(--green-mid);
    padding: 14px 32px;
    text-align: center;
}

.kazanim-banner-text {
    font-size: clamp(0.7rem, 1.4vw, 0.88rem);
    font-weight: 700;
    color: #fff;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    line-height: 1.5;
}

/* ========================
   3 SÜTUN DÜZENİ
   ======================== */
.three-col {
    display: grid;
    grid-template-columns: 190px 1fr 190px;
    gap: 0;
    width: 100%;
    min-height: calc(100vh - var(--header-h) - 38px - 52px - 90px);
}

/* Sidebar ortak */
.sidebar {
    position: sticky;
    top: var(--header-h);
    height: fit-content;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    padding: 16px 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar--left {
    border-right: 1px solid rgba(46,125,50,0.06);
    background: rgba(241,248,242,0.5);
}

.sidebar--right {
    border-left: 1px solid rgba(46,125,50,0.06);
    background: rgba(241,248,242,0.5);
}

/* Sidebar butonları */
.sb-btn {
    display: block;
    width: 100%;
    padding: 12px 14px;
    font-family: var(--font);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-body);
    background: var(--bg-white);
    border: 1.5px solid rgba(46,125,50,0.1);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.25s var(--ease);
    text-align: left;
    line-height: 1.4;
}

.sb-btn:hover {
    border-color: var(--green-mid);
    color: var(--green-mid);
    transform: translateX(2px);
}

.sb-btn--active {
    background: var(--green-mid);
    color: #fff;
    border-color: var(--green-mid);
}

.sb-btn--active:hover {
    background: var(--green-dark);
    border-color: var(--green-dark);
    color: #fff;
    transform: none;
}

.sb-btn--toggled {
    background: var(--green-light);
    color: var(--green-dark);
    border-color: var(--green-mid);
    font-style: italic;
}

/* ========================
   ORTA SÜTUN — İçerik
   ======================== */
.content-area {
    padding: 24px 28px;
    min-height: 400px;
}

/* Panel sistemi */
.panel {
    display: none;
}

.panel--active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.panel-header-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--green-dark);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--green-light);
    letter-spacing: 0.5px;
}

/* Video */
.video-wrap {
    margin-bottom: 28px;
}

.video-placeholder {
    width: 100%;
    aspect-ratio: 16/9;
    background: #1a2e1a;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.4);
    font-size: 0.9rem;
    font-weight: 500;
}

.video-placeholder iframe {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 12px;
}

.video-fallback {
    width: 100%;
    height: 100%;
    border-radius: 12px;
    background-size: cover;
    background-position: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
    text-decoration: none;
}

.video-fallback-play {
    width: 72px;
    height: 50px;
    border-radius: 14px;
    background: #ff0000;
    color: #fff;
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-fallback-text {
    background: rgba(0,0,0,0.7);
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 8px 16px;
    border-radius: 20px;
}

/* Konu Özeti */
.konu-title {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--green-dark);
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--green-light);
}

.konu-content {
    font-size: 0.88rem;
    color: var(--text-body);
    line-height: 1.85;
    white-space: pre-wrap;
}

/* ========================
   QUIZ — Slayt Düzeni
   ======================== */
.quiz-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 420px;
}

.quiz-start {
    text-align: center;
    padding: 40px;
}

.quiz-start h3 {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.quiz-start p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.quiz-start-btn {
    padding: 12px 36px;
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 600;
    color: #fff;
    background: var(--green-mid);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.25s var(--ease);
}

.quiz-start-btn:hover {
    background: var(--green-dark);
    transform: translateY(-1px);
}

/* Soru kartı */
.quiz-slide {
    width: 100%;
    max-width: 600px;
    padding: 32px;
    background: var(--bg-white);
    border-radius: 16px;
    border: 1.5px solid rgba(46,125,50,0.08);
    box-shadow: var(--shadow-sm);
}

.quiz-progress {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 16px;
    text-align: right;
}

.quiz-question {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-dark);
    line-height: 1.6;
    margin-bottom: 22px;
}

/* Test seçenekleri */
.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.quiz-option {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-body);
    background: var(--bg-page);
    border: 1.5px solid transparent;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    width: 100%;
}

.quiz-option:hover {
    border-color: var(--green-mid);
    background: var(--green-light);
}

.quiz-option--selected {
    border-color: var(--green-mid);
    background: var(--green-light);
    color: var(--green-dark);
    font-weight: 600;
}

.quiz-option--correct {
    border-color: #4caf50;
    background: #e8f5e9;
    color: #2e7d32;
}

.quiz-option--wrong {
    border-color: #e57373;
    background: #ffebee;
    color: #c62828;
}

.quiz-option-letter {
    font-weight: 700;
    font-size: 0.82rem;
    color: var(--text-muted);
    min-width: 18px;
}

/* DY butonları */
.dy-options {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 20px;
}

.dy-btn {
    padding: 12px 32px;
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.25s var(--ease);
    border: 2px solid;
}

.dy-btn--true {
    color: #2e7d32;
    border-color: #a5d6a7;
    background: #e8f5e9;
}

.dy-btn--true:hover {
    background: #2e7d32;
    color: #fff;
}

.dy-btn--false {
    color: #c62828;
    border-color: #ef9a9a;
    background: #ffebee;
}

.dy-btn--false:hover {
    background: #c62828;
    color: #fff;
}

/* Boşluk doldurma */
.bosluk-input {
    width: 100%;
    max-width: 360px;
    padding: 10px 14px;
    font-family: var(--font);
    font-size: 0.9rem;
    border: 1.5px solid #d5e0d5;
    border-radius: 10px;
    outline: none;
    margin-bottom: 16px;
    transition: border-color 0.2s;
}

.bosluk-input:focus {
    border-color: var(--green-mid);
    box-shadow: 0 0 0 3px rgba(46,125,50,0.1);
}

/* Quiz navigasyon */
.quiz-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
}

.quiz-nav-btn {
    padding: 10px 24px;
    font-family: var(--font);
    font-size: 0.82rem;
    font-weight: 600;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.quiz-nav-btn--next {
    background: var(--green-mid);
    color: #fff;
}

.quiz-nav-btn--next:hover {
    background: var(--green-dark);
}

.quiz-nav-btn--answer {
    background: #fff3e0;
    color: #e65100;
    border: 1.5px solid #ffcc02;
}

.quiz-nav-btn--answer:hover {
    background: #ffe0b2;
}

.quiz-feedback {
    margin-top: 12px;
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    text-align: center;
}

.quiz-feedback--correct {
    background: #e8f5e9;
    color: #2e7d32;
}

.quiz-feedback--wrong {
    background: #ffebee;
    color: #c62828;
}

/* Skor ekranı */
.quiz-result {
    text-align: center;
    padding: 40px;
}

.quiz-result h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
}

.quiz-score {
    font-size: 3rem;
    font-weight: 800;
    color: var(--green-mid);
    margin-bottom: 8px;
}

.quiz-result p {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

.quiz-restart-btn {
    padding: 10px 28px;
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--green-mid);
    border: 2px solid var(--green-mid);
    border-radius: 10px;
    background: none;
    cursor: pointer;
    transition: all 0.25s;
}

.quiz-restart-btn:hover {
    background: var(--green-mid);
    color: #fff;
}

/* ========================
   BİLGİ KARTLARI — Flip
   ======================== */
.flashcards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 18px;
    padding: 8px 0;
}

.flashcard {
    perspective: 800px;
    height: 200px;
    cursor: pointer;
}

.flashcard-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s var(--ease);
    transform-style: preserve-3d;
}

.flashcard--flipped .flashcard-inner {
    transform: rotateY(180deg);
}

.flashcard-face {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: 14px;
    padding: 24px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: 0.88rem;
    line-height: 1.6;
}

.flashcard-front {
    background: var(--bg-white);
    border: 2px solid var(--green-mid);
    color: var(--green-dark);
    font-weight: 600;
}

.flashcard-front::after {
    content: 'Cevap için tıklayın';
    position: absolute;
    bottom: 12px;
    font-size: 0.65rem;
    color: var(--text-muted);
    font-weight: 400;
}

.flashcard-back {
    background: var(--green-mid);
    color: #fff;
    transform: rotateY(180deg);
    font-weight: 400;
    font-size: 0.82rem;
}

/* ========================
   YENİ NESİL — Akordiyon
   ======================== */
.yeninesil-content {
    padding: 8px 0;
}

.yn-question-block {
    margin-bottom: 24px;
    border: 1.5px solid rgba(46,125,50,0.08);
    border-radius: 12px;
    overflow: hidden;
    background: var(--bg-white);
}

.yn-question-text {
    padding: 20px 22px;
    font-size: 0.88rem;
    color: var(--text-dark);
    line-height: 1.75;
    white-space: pre-wrap;
}

.yn-accordion-btn {
    display: block;
    width: 100%;
    padding: 12px 22px;
    font-family: var(--font);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--green-mid);
    background: var(--green-light);
    border: none;
    border-top: 1px solid rgba(46,125,50,0.08);
    cursor: pointer;
    text-align: left;
    transition: background 0.2s;
}

.yn-accordion-btn:hover {
    background: #d5edd6;
}

.yn-accordion-btn--open {
    background: #d5edd6;
}

.yn-accordion-content {
    display: none;
    padding: 16px 22px;
    font-size: 0.85rem;
    color: var(--text-body);
    line-height: 1.75;
    white-space: pre-wrap;
    background: #fafff9;
    border-top: 1px solid rgba(46,125,50,0.06);
}

.yn-accordion-content--open {
    display: block;
}

/* Quiz: gezinme, cevaplanmış şıklar, sonuç ekranı */
.quiz-option:disabled, .dy-btn:disabled { cursor: default; color: inherit; opacity: 1; }
.quiz-option:disabled:not(.quiz-option--correct):not(.quiz-option--wrong) { opacity: 0.75; }
.quiz-nav { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.quiz-nav-btn--prev {
    background: var(--bg-white);
    color: var(--green-dark);
    border: 1.5px solid var(--green-light);
}
.quiz-nav-btn--prev:hover:not(:disabled) { background: var(--green-light); }
.quiz-nav-btn--prev:disabled { opacity: 0.4; cursor: default; }
.quiz-nav-btn--skip {
    background: var(--bg-white);
    color: var(--text-muted);
    border: 1.5px dashed var(--text-muted);
}
.quiz-nav-btn--skip:hover { color: var(--text-dark); border-color: var(--text-dark); }
.quiz-best { display: inline-block; margin-top: 6px; font-weight: 700; color: var(--green-mid); }

.quiz-result-btns { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin-bottom: 8px; }
.quiz-restart-btn--retry { background: var(--green-mid); color: #fff; }
.quiz-perfect { font-weight: 700; color: var(--green-mid); margin-top: 16px; }
.quiz-review { text-align: left; margin-top: 24px; }
.quiz-review h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--green-light);
}
.quiz-review-item {
    border: 1px solid var(--green-light);
    border-radius: 10px;
    padding: 12px 16px;
    margin-bottom: 12px;
    font-size: 0.85rem;
    line-height: 1.6;
    background: var(--bg-white);
}
.quiz-review-head { font-weight: 700; color: var(--green-dark); margin-bottom: 4px; }
.quiz-review-tag { font-size: 0.7rem; padding: 2px 8px; border-radius: 12px; margin-left: 6px; color: #fff; }
.quiz-review-tag--wrong { background: #c62828; }
.quiz-review-tag--empty { background: #9e9e9e; }
.quiz-review-q { color: var(--text-body); margin-bottom: 6px; }
.quiz-review-a { color: var(--text-body); }
.quiz-review-a--correct { color: #2e7d32; }

/* Bilgi kartları araç çubuğu */
.flashcards-toolbar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }

/* Önceki / sonraki kazanım */
.kazanim-gezinti {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    max-width: 1100px;
    margin: 10px auto 30px;
    padding: 0 20px;
}
.kg-link {
    display: flex;
    flex-direction: column;
    gap: 3px;
    padding: 14px 18px;
    background: var(--bg-white);
    border: 1.5px solid var(--green-light);
    border-radius: 12px;
    text-decoration: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.kg-link:hover { border-color: var(--green-mid); box-shadow: var(--shadow-sm); }
.kg-link--sonra { text-align: right; }
.kg-yon { font-size: 0.72rem; font-weight: 700; color: var(--green-mid); text-transform: uppercase; letter-spacing: 0.5px; }
.kg-kod { font-size: 0.85rem; font-weight: 800; color: var(--green-dark); }
.kg-metin { font-size: 0.8rem; color: var(--text-body); line-height: 1.45; }
@media (max-width: 600px) {
    .kazanim-gezinti { grid-template-columns: 1fr; padding: 0 16px; }
    .kg-link--sonra { text-align: left; }
}

/* Biçimlendirilmiş konu özeti ve kitap çözümleri */
.konu-content.bicimli { white-space: normal; }

.bm-satir { margin: 2px 0; }
.bm-bosluk { height: 10px; }
.bm-madde { display: flex; gap: 8px; margin: 3px 0; }
.bm-madde--alt { margin-left: 22px; }
.bm-isaret { color: var(--green-mid); font-weight: 700; flex-shrink: 0; }
.bm-altbaslik { font-weight: 700; color: var(--text-dark); margin: 12px 0 4px; }
.bicimli strong { color: var(--text-dark); font-weight: 700; }

.ko-ana-baslik {
    font-size: 1rem;
    font-weight: 800;
    color: var(--green-dark);
    letter-spacing: 0.3px;
    margin-bottom: 10px;
}
.ko-bolum {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--green-dark);
    background: var(--green-light);
    border-left: 4px solid var(--green-mid);
    border-radius: 6px;
    padding: 7px 12px;
    margin: 22px 0 10px;
}
.ko-ara {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--green-mid);
    margin: 14px 0 4px;
}

.kc-kart {
    background: var(--bg-white);
    border: 1px solid var(--green-light);
    border-left: 4px solid var(--green-mid);
    border-radius: 10px;
    padding: 14px 18px;
    margin-bottom: 16px;
}
.kc-etiket {
    display: inline-block;
    background: var(--green-dark);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.4px;
    padding: 3px 10px;
    border-radius: 20px;
    margin-bottom: 8px;
}
.kc-baslik {
    font-size: 0.98rem;
    font-weight: 700;
    color: var(--green-dark);
    line-height: 1.45;
    margin-bottom: 10px;
}

/* Çıkmış Sorular */
.cikmis-soru {
    background: #fff;
    border: 1px solid rgba(46,125,50,0.12);
    border-radius: 12px;
    padding: 18px 20px;
    margin-bottom: 22px;
}

.cikmis-baslik {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.cikmis-no {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--green-dark);
}

.cikmis-yil {
    background: var(--green-dark);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    letter-spacing: 0.3px;
}

.cikmis-img {
    display: block;
    width: 100%;
    max-width: 520px;
    height: auto;
    margin-bottom: 14px;
}

.cikmis-btn {
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--green-dark);
    background: #e8f5e9;
    border: 1px solid rgba(46,125,50,0.2);
    border-radius: 8px;
    padding: 9px 18px;
    cursor: pointer;
    transition: background 0.2s;
}

.cikmis-btn:hover,
.cikmis-btn--open {
    background: #d5edd6;
}

.cikmis-cozum {
    margin-top: 12px;
    padding: 14px 18px;
    background: #fafff9;
    border-left: 4px solid var(--green-mid);
    border-radius: 8px;
    font-size: 0.86rem;
    color: var(--text-body);
    line-height: 1.75;
}

.cikmis-cevap {
    font-weight: 700;
    color: var(--green-dark);
    margin-bottom: 6px;
}

/* Çok yakında paneli */
.coming-soon-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    text-align: center;
    padding: 40px;
}

.coming-soon-panel h3 {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.coming-soon-panel p {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ========================
   MOBİL BUTON BAR
   ======================== */
.mobile-btn-bar {
    display: none;
}

/* ========================
   RESPONSIVE
   ======================== */
@media (max-width: 1024px) {
    .three-col {
        grid-template-columns: 160px 1fr 160px;
    }
    .sb-btn { font-size: 0.72rem; padding: 10px 10px; }
}

@media (max-width: 768px) {
    .sidebar { display: none; }
    .three-col {
        grid-template-columns: 1fr;
    }
    .mobile-btn-bar {
        display: flex;
        overflow-x: auto;
        gap: 8px;
        padding: 10px 16px;
        background: rgba(225,240,225,0.5);
        border-bottom: 1px solid rgba(46,125,50,0.06);
        -webkit-overflow-scrolling: touch;
    }
    .mobile-btn-bar::-webkit-scrollbar { height: 3px; }
    .mobile-btn-bar::-webkit-scrollbar-thumb { background: var(--green-mid); border-radius: 2px; }

    .mb-btn {
        flex-shrink: 0;
        padding: 8px 16px;
        font-family: var(--font);
        font-size: 0.72rem;
        font-weight: 600;
        color: var(--text-body);
        background: var(--bg-white);
        border: 1.5px solid rgba(46,125,50,0.12);
        border-radius: 20px;
        cursor: pointer;
        transition: all 0.2s;
        white-space: nowrap;
    }

    .mb-btn:hover { border-color: var(--green-mid); }
    .mb-btn--active {
        background: var(--green-mid);
        color: #fff;
        border-color: var(--green-mid);
    }

    .content-area { padding: 16px; }
    .kazanim-banner { padding: 12px 16px; }
    .flashcards-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .content-area { padding: 12px; }
    .quiz-slide { padding: 20px; }
    .quiz-option { padding: 10px 12px; font-size: 0.8rem; }
    .flashcard { height: 170px; }
}

/* PDF Öğrenme Etkinliği Stilleri */
.pdf-activity-wrapper {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 10px;
}
.pdf-action-bar {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}
.pdf-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 8px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.25s var(--ease);
    border: none;
}
.pdf-btn--primary {
    background: #1b5e20;
    color: #ffffff;
}
.pdf-btn--primary:hover {
    background: #2e7d32;
    transform: translateY(-1px);
}
.pdf-btn--secondary {
    background: #1565c0;
    color: #ffffff;
}
.pdf-btn--secondary:hover {
    background: #1e88e5;
    transform: translateY(-1px);
}
.pdf-btn--sm {
    padding: 6px 14px;
    font-size: 0.78rem;
    background: #424242;
    color: #fff;
}
.pdf-btn--sm:hover {
    background: #616161;
}
.pdf-viewer-container {
    width: 100%;
    height: 750px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 18px rgba(0,0,0,0.08);
    background: #f8f9fa;
    border: 1px solid #e2e8f0;
}
.pdf-iframe {
    width: 100%;
    height: 100%;
    border: none;
}


/* Test sorusu açıklaması */
.quiz-explain {
    margin-top: 10px;
    padding: 10px 14px;
    background: var(--green-light);
    border-left: 4px solid var(--green-mid);
    border-radius: 8px;
    font-size: 0.84rem;
    line-height: 1.6;
    color: var(--text-body);
}
.quiz-explain strong { color: var(--green-dark); }