/* ===========================================================
   Biyoloji Rehberi — v4
   =========================================================== */

:root {
    --green-dark: #1b5e20;
    --green-mid: #2e7d32;
    --green-btn: #388e3c;
    --green-light: #e8f5e9;

    --bg-page: #f1f8f2;
    --bg-white: #ffffff;

    --text-dark: #1a2e1a;
    --text-body: #3d5a3d;
    --text-muted: #7a9a7a;

    --accent-teacher: #e8734a;
    --accent-teacher-bg: #fef0eb;
    --accent-teacher-border: #f4c4a8;

    --shadow-xs: 0 1px 3px rgba(0,0,0,0.04);
    --shadow-sm: 0 2px 12px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
    --shadow-lg: 0 16px 50px rgba(0,0,0,0.12);

    --font: 'Montserrat', system-ui, sans-serif;
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --header-h: 72px;
}

/* RESET */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; -webkit-font-smoothing:antialiased; }
body {
    font-family: var(--font);
    background: var(--bg-page);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
a { text-decoration:none; color:inherit; }
button { border:none; background:none; cursor:pointer; font-family:var(--font); }
img { max-width:100%; height:auto; display:block; }

::-webkit-scrollbar { width:6px; }
::-webkit-scrollbar-track { background:var(--bg-page); }
::-webkit-scrollbar-thumb { background:var(--green-mid); border-radius:3px; }

/* ANIMATIONS */
@keyframes fadeInUp {
    from { opacity:0; transform:translateY(24px); }
    to   { opacity:1; transform:translateY(0); }
}
@keyframes fadeIn {
    from { opacity:0; }
    to   { opacity:1; }
}
@keyframes wave {
    0%   { transform: perspective(500px) rotateY(0deg); }
    15%  { transform: perspective(500px) rotateY(5deg) scaleX(1.015); }
    30%  { transform: perspective(500px) rotateY(-3deg) scaleX(0.99); }
    45%  { transform: perspective(500px) rotateY(4deg) scaleX(1.01); }
    60%  { transform: perspective(500px) rotateY(-2deg); }
    75%  { transform: perspective(500px) rotateY(3deg) scaleX(1.005); }
    100% { transform: perspective(500px) rotateY(0deg); }
}
@keyframes modalPop {
    from { opacity:0; transform:scale(0.92) translateY(16px); }
    to   { opacity:1; transform:scale(1) translateY(0); }
}
@keyframes floatSlow {
    0%,100% { transform:translateY(0); }
    50%     { transform:translateY(-10px); }
}

/* ========================
   HEADER
   ======================== */
.header {
    position: fixed;
    top:0; left:0; right:0;
    height: var(--header-h);
    background: rgba(241, 248, 242, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: var(--shadow-xs);
    z-index: 1000;
    transition: box-shadow 0.3s ease, background 0.3s ease;
}
.header--scrolled {
    background: rgba(241, 248, 242, 0.96);
    box-shadow: 0 2px 24px rgba(0,60,0,0.08);
}

.header-inner {
    max-width: 1400px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    padding: 0 32px;
    gap: 24px;
}

/* Marka */
.header-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
    transition: opacity 0.2s;
}
.header-brand:hover { opacity: 0.85; }

.brand-logo {
    height: 88px;
    width: auto;
    object-fit: contain;
}

.brand-name {
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--green-dark);
    white-space: nowrap;
}

/* Nav */
.header-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.nav-item {
    padding: 7px 20px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-dark);
    border: 1.5px solid var(--text-dark);
    border-radius: 24px;
    transition: all 0.28s var(--ease);
    letter-spacing: 0.3px;
}
.nav-item:hover {
    background: var(--green-mid);
    border-color: var(--green-mid);
    color: #fff;
    transform: translateY(-1px);
}

/* Sağ */
.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-left: 20px;
    flex-shrink: 0;
}

.social-row {
    display: flex;
    align-items: center;
    gap: 6px;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px; height: 42px;
    border-radius: 50%;
    transition: all 0.25s var(--ease);
}
.social-icon:hover {
    transform: scale(1.12) translateY(-1px);
    background: rgba(0,0,0,0.04);
}
.social-icon--muted { color: #b0b0b0; }
.social-icon--muted:hover { color: #888; }

.header-divider {
    width: 1px; height: 22px;
    background: rgba(0,0,0,0.1);
}

.btn-login {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 7px 18px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--green-mid);
    border: 1.8px solid var(--green-mid);
    border-radius: 24px;
    transition: all 0.28s var(--ease);
    white-space: nowrap;
}
.btn-login:hover { background: var(--green-mid); color: #fff; }
.btn-login:hover svg { stroke: #fff; }

/* Bayrak — büyük + dalgalanma */
.flag-wrap { flex-shrink: 0; }

.flag-img {
    height: 68px;
    width: auto;
    border-radius: 4px;
    animation: wave 3s ease-in-out infinite;
    transform-origin: left center;
    filter: drop-shadow(0 2px 6px rgba(0,0,0,0.1));
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px; height: 28px;
    z-index: 1010;
}
.hamburger span {
    display:block; width:22px; height:2px;
    background: var(--text-dark);
    border-radius:2px;
    transition: all 0.3s var(--ease);
}
.hamburger--active span:nth-child(1) { transform:rotate(45deg) translate(5px,5px); }
.hamburger--active span:nth-child(2) { opacity:0; }
.hamburger--active span:nth-child(3) { transform:rotate(-45deg) translate(5px,-5px); }

/* ========================
   HERO
   ======================== */
.hero {
    flex: 1;
    margin-top: var(--header-h);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - var(--header-h) - 90px);
    padding: 40px 24px;
    position: relative;
    overflow: hidden;
}

/* Dekorasyon */
.hero-deco {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}
.deco-left {
    position: absolute;
    left: 4%; top: 10%;
    width: 60px;
    animation: floatSlow 8s ease-in-out infinite;
}
.deco-right {
    position: absolute;
    right: 6%; top: 15%;
    width: 100px;
    animation: floatSlow 10s ease-in-out infinite 2s;
}
.deco-right-bottom {
    position: absolute;
    right: 10%; bottom: 12%;
    width: 55px;
    animation: floatSlow 9s ease-in-out infinite 4s;
}

/* İçerik */
.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 680px;
}

.hero-eyebrow {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 12px;
    animation: fadeInUp 0.7s var(--ease) both;
}

.hero-title {
    font-weight: 800;
    font-size: clamp(3.5rem, 8vw, 6.5rem);
    color: var(--green-mid);
    letter-spacing: 6px;
    line-height: 1.1;
    margin-bottom: 10px;
    animation: fadeInUp 0.8s var(--ease) 0.12s both;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.35rem);
    font-weight: 700;
    letter-spacing: 5px;
    color: var(--text-body);
    text-transform: uppercase;
    margin-bottom: 44px;
    animation: fadeInUp 0.8s var(--ease) 0.24s both;
}

/* Butonlar — ikisi de aynı stil */
.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s var(--ease) 0.36s both;
}

.hero-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 0.92rem;
    font-weight: 600;
    border-radius: 30px;
    transition: all 0.3s var(--ease);
    letter-spacing: 0.3px;
    cursor: pointer;
    background: var(--bg-white);
    color: var(--green-btn);
    border: 2px solid var(--green-mid);
    box-shadow: var(--shadow-sm);
}

.hero-btn:hover {
    background: var(--green-mid);
    border-color: var(--green-mid);
    color: #fff;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.hero-btn:hover .hero-btn-icon { stroke: #fff; }

.hero-btn-icon { transition: stroke 0.2s ease; }

/* ========================
   FOOTER
   ======================== */
.footer {
    background: rgba(225, 240, 225, 0.6);
    border-top: 1px solid rgba(46,125,50,0.08);
    padding: 20px 40px;
    flex-shrink: 0;
}

.footer-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.footer-col { flex-shrink: 0; }
.footer-col--center {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.footer-portals-label {
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.footer-portals {
    display: flex;
    align-items: center;
    gap: 20px;
}

.portal {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    padding: 8px 14px;
    border-radius: 10px;
    transition: all 0.25s var(--ease);
}
.portal:hover {
    background: rgba(46,125,50,0.06);
    transform: translateY(-2px);
}

.portal-logo {
    height: 30px;
    width: auto;
    object-fit: contain;
}
.portal:hover .portal-logo { transform: scale(1.06); }

.portal-name {
    font-size: 0.6rem;
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
}

.footer-pill {
    display: inline-flex;
    align-items: center;
    padding: 8px 22px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-dark);
    border: 1.5px solid var(--text-dark);
    border-radius: 24px;
    transition: all 0.28s var(--ease);
    white-space: nowrap;
}
.footer-pill:hover {
    background: var(--green-mid);
    border-color: var(--green-mid);
    color: #fff;
    transform: translateY(-1px);
}

/* ========================
   MODALS — Ortak
   ======================== */
.modal-overlay {
    position:fixed; inset:0;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 2000;
    display:flex; align-items:center; justify-content:center;
    opacity:0; visibility:hidden;
    transition: opacity 0.3s, visibility 0.3s;
    padding: 20px;
}
.modal-overlay.modal--active { opacity:1; visibility:visible; }

.modal-box {
    background: var(--bg-white);
    border-radius: 18px;
    padding: 40px 36px;
    text-align: center;
    position: relative;
    animation: modalPop 0.35s var(--ease);
    box-shadow: var(--shadow-lg);
    max-height: 85vh;
    overflow-y: auto;
}

.modal-box--sm { max-width: 370px; width: 88%; }
.modal-box--md { max-width: 520px; width: 92%; text-align: left; }
.modal-box--lg { max-width: 640px; width: 94%; text-align: left; }

.modal-close {
    position:absolute; top:14px; right:16px;
    color:#aaa; font-size: 1.3rem; font-weight: 300;
    padding:4px 8px; border-radius:50%;
    transition: all 0.2s;
    line-height: 1;
}
.modal-close:hover { color:var(--text-dark); background:#f2f2f2; }

.modal-emoji { font-size:2.8rem; margin-bottom:14px; }
.modal-title { font-weight:700; font-size:1.3rem; color:var(--text-dark); margin-bottom:8px; }
.modal-text { font-size:0.85rem; color:var(--text-body); line-height:1.7; }

/* Modal scrollbar */
.modal-box::-webkit-scrollbar { width: 4px; }
.modal-box::-webkit-scrollbar-thumb { background: #ccc; border-radius: 2px; }

/* ========================
   MODAL: Hakkımızda
   ======================== */
.about-header {
    display: flex;
    align-items: center;
    gap: 18px;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.about-logo {
    height: 64px;
    width: auto;
    object-fit: contain;
    flex-shrink: 0;
}

.about-brand {
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--green-dark);
    margin-bottom: 2px;
}

.about-motto {
    font-size: 0.82rem;
    font-style: italic;
    color: var(--text-muted);
    font-weight: 500;
}

.about-section {
    margin-bottom: 24px;
}

.about-section-title {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-dark);
    margin-bottom: 10px;
}

.about-text {
    font-size: 0.85rem;
    color: var(--text-body);
    line-height: 1.75;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.about-card {
    padding: 18px;
    background: var(--green-light);
    border-radius: 12px;
    border-left: 3px solid var(--green-mid);
}

.about-card .about-section-title {
    margin-bottom: 8px;
    font-size: 0.92rem;
}

.about-card .about-text {
    font-size: 0.8rem;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.feature-item {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-body);
    padding: 8px 12px;
    background: var(--green-light);
    border-radius: 8px;
    transition: background 0.2s;
}

.feature-item:hover {
    background: #d5edd6;
}

/* ========================
   MODAL: Yasal
   ======================== */
.legal-text {
    font-size: 0.85rem;
    color: var(--text-body);
    line-height: 1.75;
    margin-bottom: 18px;
}

.legal-warning {
    background: #fff8f0;
    border: 1px solid #f0dcc8;
    border-left: 3px solid var(--accent-teacher);
    border-radius: 10px;
    padding: 16px 18px;
}

.legal-warning-title {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--accent-teacher);
    margin-bottom: 6px;
}

.legal-warning .legal-text {
    margin-bottom: 0;
    font-size: 0.82rem;
}

/* ========================
   MODAL: İletişim Formu
   ======================== */
.contact-form {
    text-align: left;
}

.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 6px;
    letter-spacing: 0.2px;
}

.form-input {
    width: 100%;
    padding: 10px 14px;
    font-family: var(--font);
    font-size: 0.85rem;
    color: var(--text-dark);
    background: var(--bg-page);
    border: 1.5px solid #d5e0d5;
    border-radius: 10px;
    outline: none;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

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

.form-input::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-submit {
    width: 100%;
    padding: 12px;
    font-family: var(--font);
    font-size: 0.88rem;
    font-weight: 600;
    color: #fff;
    background: var(--green-mid);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.28s var(--ease);
    margin-top: 4px;
}

.form-submit:hover {
    background: var(--green-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

/* ========================
   BREADCRUMB
   ======================== */
.breadcrumb {
    margin-top: var(--header-h);
    background: rgba(225, 240, 225, 0.5);
    border-bottom: 1px solid rgba(46,125,50,0.06);
    padding: 10px 32px;
}

.breadcrumb-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    font-weight: 500;
}

.breadcrumb-link {
    color: var(--green-mid);
    transition: color 0.2s;
}

.breadcrumb-link:hover {
    color: var(--green-dark);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.breadcrumb-sep {
    color: var(--text-muted);
    font-weight: 300;
}

.breadcrumb-current {
    color: var(--text-body);
}

/* ========================
   PAGE 2 — Hero Ayarları
   ======================== */
.hero--page2 {
    margin-top: 0;
    min-height: calc(100vh - var(--header-h) - 38px - 90px);
}

.hero-title-sm {
    font-weight: 800;
    font-size: clamp(1.6rem, 3.5vw, 2.6rem);
    color: var(--green-mid);
    letter-spacing: 4px;
    line-height: 1.1;
    margin-bottom: 8px;
    animation: fadeInUp 0.8s var(--ease) 0.12s both;
}

/* ========================
   SINIF KARTLARI
   ======================== */
.class-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
    animation: fadeInUp 0.8s var(--ease) 0.4s both;
}

.class-card {
    position: relative;
    background: var(--bg-white);
    border-radius: 16px;
    border: 2px solid transparent;
    padding: 32px 20px 28px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s var(--ease);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    overflow: hidden;
}

.class-card:hover {
    transform: scale(1.04) translateY(-4px);
    box-shadow: var(--shadow-md);
}

.class-card:focus-visible {
    outline: 3px solid var(--green-mid);
    outline-offset: 4px;
}

.class-card-number {
    position: absolute;
    top: -8px;
    right: -4px;
    font-size: 4.5rem;
    font-weight: 800;
    opacity: 0.06;
    line-height: 1;
    pointer-events: none;
    color: currentColor;
}

.class-card-icon {
    width: 52px;
    height: 52px;
    margin-bottom: 4px;
    transition: transform 0.3s var(--ease);
}

.class-card-icon svg {
    width: 100%;
    height: 100%;
}

.class-card:hover .class-card-icon {
    transform: scale(1.1);
}

.class-card-title {
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: 0.5px;
}

.class-card-desc {
    font-size: 0.72rem;
    font-weight: 400;
    color: var(--text-muted);
}

/* Renk varyantları */
.class-card--orange {
    border-color: #e8956a;
    color: #c96a3c;
}
.class-card--orange:hover {
    border-color: #d4784e;
    box-shadow: 0 12px 36px rgba(232, 149, 106, 0.18);
}
.class-card--orange .class-card-number { color: #e8956a; }

.class-card--green {
    border-color: var(--green-btn);
    color: var(--green-mid);
}
.class-card--green:hover {
    border-color: var(--green-dark);
    box-shadow: 0 12px 36px rgba(56, 142, 60, 0.16);
}
.class-card--green .class-card-number { color: var(--green-btn); }

.class-card--blue {
    border-color: #5ba4cf;
    color: #3b7fb5;
}
.class-card--blue:hover {
    border-color: #4088b8;
    box-shadow: 0 12px 36px rgba(91, 164, 207, 0.18);
}
.class-card--blue .class-card-number { color: #5ba4cf; }

.class-card--purple {
    border-color: #9b7ec8;
    color: #7b5daa;
}
.class-card--purple:hover {
    border-color: #8264b0;
    box-shadow: 0 12px 36px rgba(155, 126, 200, 0.18);
}
.class-card--purple .class-card-number { color: #9b7ec8; }

/* ========================
   SAYFA INTRO (Slogan)
   ======================== */
.page-intro {
    padding: 28px 32px 8px;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
    animation: fadeInUp 0.7s var(--ease) both;
}

.page-intro-text {
    font-size: clamp(0.95rem, 2vw, 1.2rem);
    font-weight: 700;
    color: var(--green-mid);
    text-transform: uppercase;
    letter-spacing: 2px;
    line-height: 1.6;
    white-space: nowrap;
}

/* ========================
   KAZANIM KARTLARI
   ======================== */
.kazanim-section {
    flex: 1;
    padding: 20px 32px 48px;
    max-width: 960px;
    margin: 0 auto;
    width: 100%;
}

.kazanim-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    animation: fadeInUp 0.8s var(--ease) 0.15s both;
}

.kazanim-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 22px;
    background: var(--bg-white);
    border: 1.5px solid rgba(46, 125, 50, 0.1);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.28s var(--ease);
    box-shadow: var(--shadow-xs);
    text-decoration: none;
    color: inherit;
}

.kazanim-card:hover {
    transform: translateY(-2px) scale(1.01);
    box-shadow: 0 8px 28px rgba(46, 125, 50, 0.1);
    border-color: var(--green-mid);
}

.kazanim-card:focus-visible {
    outline: 3px solid var(--green-mid);
    outline-offset: 3px;
}

.kazanim-code {
    font-weight: 700;
    font-size: 0.82rem;
    color: var(--green-mid);
    white-space: nowrap;
    flex-shrink: 0;
    min-width: 90px;
    letter-spacing: 0.3px;
}

.kazanim-text {
    flex: 1;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-body);
    line-height: 1.55;
}

.kazanim-arrow {
    flex-shrink: 0;
    color: #ccc;
    transition: color 0.2s, transform 0.2s;
    display: flex;
    align-items: center;
}

.kazanim-card:hover .kazanim-arrow {
    color: var(--green-mid);
    transform: translateX(3px);
}

/* ========================
   RESPONSIVE
   ======================== */
@media (max-width: 1024px) {
    .header-inner { padding: 0 20px; gap: 16px; }
    .brand-logo { height: 70px; }
    .brand-name { font-size: 1.1rem; }
    .flag-img { height: 52px; }
    .deco-left, .deco-right, .deco-right-bottom { display: none; }
    .class-cards { grid-template-columns: repeat(2, 1fr); gap: 18px; }
}

@media (max-width: 768px) {
    .hamburger { display: flex; }
    .header-nav, .header-actions { display: none; }
    .header-nav.nav--open, .header-actions.nav--open { display: flex; }

    .header-nav {
        position: fixed;
        top: var(--header-h);
        right: -100%;
        width: 260px;
        height: calc(100vh - var(--header-h));
        background: rgba(241,248,242,0.98);
        backdrop-filter: blur(16px);
        flex-direction: column;
        align-items: flex-start;
        padding: 28px;
        gap: 12px;
        box-shadow: -4px 0 30px rgba(0,0,0,0.08);
        transition: right 0.4s var(--ease);
        z-index: 1005;
    }
    .header-nav.nav--open { right: 0; }
    .nav-item { width: 100%; text-align: center; }

    .hero { padding: 30px 16px; }
    .hero-title { letter-spacing: 3px; }
    .hero-subtitle { letter-spacing: 3px; margin-bottom: 32px; }
    .hero-btn { padding: 12px 24px; font-size: 0.85rem; }

    .about-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }

    .footer-inner { flex-direction: column; gap: 16px; text-align: center; }
    .footer-portals { flex-wrap: wrap; justify-content: center; }
    .footer { padding: 16px 20px; }

    .breadcrumb { padding: 8px 16px; }
    .class-cards { gap: 16px; }
    .class-card { padding: 24px 16px 22px; }

    .page-intro { padding: 20px 16px 4px; }
    .kazanim-section { padding: 16px 16px 36px; }
    .kazanim-card { padding: 14px 16px; gap: 12px; }
    .kazanim-code { min-width: auto; font-size: 0.75rem; }
    .kazanim-text { font-size: 0.8rem; }
}

@media (max-width: 480px) {
    .header-inner { padding: 0 12px; }
    .brand-logo { height: 56px; }
    .brand-name { font-size: 0.95rem; }
    .flag-img { height: 44px; }

    .hero { padding: 24px 12px; }
    .hero-eyebrow { font-size: 0.72rem; letter-spacing: 2.5px; }
    .hero-subtitle { font-size: 0.85rem; letter-spacing: 2px; }
    .hero-buttons { flex-direction: column; align-items: center; }
    .hero-btn { width: 100%; max-width: 280px; justify-content: center; }

    .class-cards { grid-template-columns: 1fr 1fr; gap: 12px; max-width: 340px; }
    .class-card { padding: 22px 14px 18px; }
    .class-card-icon { width: 40px; height: 40px; }
    .class-card-title { font-size: 0.92rem; }
    .class-card-number { font-size: 3.5rem; }

    .modal-box { padding: 30px 22px; }
    .about-header { flex-direction: column; text-align: center; }
    .about-logo { height: 50px; }

    .footer-pill { padding: 7px 16px; font-size: 0.72rem; }
    .portal { padding: 6px 8px; }
    .portal-logo { height: 24px; }
    .portal-name { font-size: 0.55rem; }

    .page-intro { padding: 16px 12px 4px; }
    .page-intro-text { letter-spacing: 1px; }
    .kazanim-section { padding: 12px 12px 28px; }
    .kazanim-card { flex-direction: column; align-items: flex-start; gap: 6px; padding: 14px; }
    .kazanim-arrow { display: none; }
}


/* ========================
   YAZILI SORULARI
   ======================== */
.yazili-content {
    padding: 0;
}
.yazili-question-block {
    background: var(--bg-white);
    border: 1px solid #e0e8e0;
    border-radius: 12px;
    padding: 20px 24px;
    margin-bottom: 18px;
    transition: box-shadow 0.2s ease;
}
.yazili-question-block:hover {
    box-shadow: var(--shadow-sm);
}
.yazili-tarih {
    display: inline-block;
    background: linear-gradient(135deg, #1565c0, #1976d2);
    color: #fff;
    font-size: 0.78rem;
    font-weight: 700;
    padding: 4px 14px;
    border-radius: 20px;
    margin-bottom: 14px;
    letter-spacing: 0.3px;
}
.yazili-soru-text {
    font-size: 0.97rem;
    line-height: 1.7;
    color: var(--text-dark);
    margin-bottom: 16px;
    white-space: pre-line;
}
.yazili-soru-text img.yazili-img {
    display: block;
    max-width: 100%;
    margin: 12px auto;
    border-radius: 8px;
    border: 1px solid #e0e8e0;
}
.yazili-acc-btn {
    display: inline-block;
    background: var(--green-light);
    color: var(--green-dark);
    border: 1px solid var(--green-mid);
    font-size: 0.88rem;
    font-weight: 600;
    padding: 8px 20px;
    border-radius: 8px;
    cursor: pointer;
    margin: 4px 8px 4px 0;
    transition: all 0.2s ease;
    font-family: var(--font);
}
.yazili-acc-btn:hover {
    background: var(--green-mid);
    color: #fff;
}
.yazili-acc-btn.yn-accordion-btn--open {
    background: var(--green-mid);
    color: #fff;
}
.yazili-acc-btn--puan {
    background: #fff3e0;
    color: #e65100;
    border-color: #ffb74d;
}
.yazili-acc-btn--puan:hover {
    background: #ff9800;
    color: #fff;
}
.yazili-acc-btn--puan.yn-accordion-btn--open {
    background: #ff9800;
    color: #fff;
}
.yazili-acc-content {
    overflow: hidden;
    transition: all 0.3s ease;
}
.yazili-cevap {
    background: #f1f8f2;
    border-left: 4px solid var(--green-mid);
    padding: 16px 20px;
    margin: 10px 0;
    border-radius: 0 8px 8px 0;
    font-size: 0.93rem;
    line-height: 1.7;
    color: var(--text-body);
}
.yazili-puantaj {
    background: #fff8e1;
    border-left: 4px solid #ff9800;
    padding: 16px 20px;
    margin: 10px 0;
    border-radius: 0 8px 8px 0;
    font-size: 0.88rem;
    line-height: 1.6;
    color: #5d4037;
}

/* İlerleme rozetleri (sınıf sayfaları) */
.progress-badges { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.progress-badge {
    font-size: 0.68rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 12px;
    border: 1px solid currentColor;
}
.progress-badge--good { color: #2e7d32; background: #e8f5e9; }
.progress-badge--mid { color: #e65100; background: #fff3e0; }
.progress-badge--low { color: #c62828; background: #ffebee; }

/* Yasal bilgilendirme ve gizlilik penceresi */
.modal-box--legal { max-height: 85vh; overflow-y: auto; text-align: left; }
.legal-heading {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--green-dark);
    margin: 18px 0 8px;
}
.legal-list { padding-left: 18px; margin-bottom: 10px; }
.legal-list li { font-size: 0.82rem; color: var(--text-body); line-height: 1.6; margin-bottom: 6px; }
.legal-warning a { color: var(--green-dark); font-weight: 600; }
.legal-clear-btn { margin-top: 10px; width: auto; padding: 10px 20px; }
.legal-clear-btn:disabled { opacity: 0.6; cursor: default; }

/* Kaynak notu ve hata bildir bağlantısı */
/* Konu özeti şemaları */
.sema {
    margin: 22px 0 6px;
    padding: 14px 16px 10px;
    background: #fff;
    border: 1px solid var(--green-light);
    border-radius: 14px;
}
.sema figcaption {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    font-weight: 700;
    color: var(--green-dark);
    font-size: 0.95rem;
}
.sema-etiket {
    background: var(--green-dark);
    color: #fff;
    font-size: 0.7rem;
    padding: 3px 9px;
    border-radius: 20px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}
.sema img {
    display: block;
    width: 100%;
    height: auto;
    cursor: zoom-in;
}
.sema-ipucu {
    margin-top: 6px;
    font-size: 0.72rem;
    color: var(--text-muted);
    text-align: right;
}

.kaynak-notu {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 14px;
    padding-top: 10px;
    border-top: 1px dashed var(--green-light);
    font-size: 0.74rem;
    color: var(--text-muted);
    line-height: 1.5;
}
.hata-bildir {
    font-size: 0.74rem;
    color: var(--text-muted);
    text-decoration: none;
    white-space: nowrap;
}
.hata-bildir:hover { color: #c62828; text-decoration: underline; }
.quiz-hata { text-align: right; margin-top: 10px; }