:root {
    --go-gold: #F2A900;
    --go-gold-light: #FFD040;
    --go-gold-dark: #D4940A;
    --go-black: #1A1A1A;
    --go-dark: #111111;
    --go-charcoal: #2D2D2D;
    --go-gray: #4A4A4A;
    --go-gray-light: #6B6B6B;
    --go-bg: #FAFAF8;
    --go-bg-warm: #F5F3EE;
    --go-white: #FFFFFF;
    --go-gradient-gold: linear-gradient(135deg, #F2A900 0%, #FFD040 100%);
    --go-gradient-dark: linear-gradient(135deg, #1A1A1A 0%, #2D2D2D 100%);
    --go-shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --go-shadow: 0 8px 30px rgba(0,0,0,0.08);
    --go-shadow-lg: 0 20px 50px rgba(0,0,0,0.12);
    --go-shadow-gold: 0 8px 30px rgba(242,169,0,0.25);
    --go-radius: 14px;
    --go-radius-lg: 20px;
    --font-display: 'Outfit', sans-serif;
    --font-body: 'DM Sans', sans-serif;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    color: var(--go-gray);
    background: var(--go-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
::selection { background: var(--go-gold); color: var(--go-black); }

/* ===== TOP BAR ===== */
.top-bar {
    background: var(--go-dark);
    color: rgba(255,255,255,0.65);
    font-size: 0.8rem;
    padding: 9px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.top-bar a { color: rgba(255,255,255,0.65); text-decoration: none; transition: color 0.3s; }
.top-bar a:hover { color: var(--go-gold); }
.top-bar-left { display: flex; align-items: center; }
.top-bar-info { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.top-bar-info i { color: var(--go-gold); font-size: 0.75rem; }
.top-bar-divider { width: 1px; height: 12px; background: rgba(255,255,255,0.15); margin: 0 14px; }
/* 1) Sosyal medya ikonları turuncu */
.top-social a {
    display: inline-flex; align-items: center; justify-content: center;
    width: 28px; height: 28px; border-radius: 8px;
    background: rgba(242,169,0,0.15); color: var(--go-gold);
    font-size: 0.82rem; margin-left: 5px; transition: all 0.3s;
}
.top-social a:hover { background: var(--go-gold); color: var(--go-black); transform: translateY(-1px); }

/* ===== NAVBAR ===== */
.main-navbar {
    background: var(--go-white);
    padding: 0;
    transition: all 0.35s ease;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    /* 10) Sticky header fix */
    position: sticky;
    top: 0;
    z-index: 1030;
}
.main-navbar.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,0.08); border-bottom-color: transparent; }
/* 2) Logo büyütüldü */
.main-navbar .navbar-brand { padding: 10px 0; }
.main-navbar .navbar-brand img { height: 68px; transition: height 0.3s; }
.main-navbar.scrolled .navbar-brand img { height: 52px; }
.main-navbar .nav-link {
    font-family: var(--font-display); font-weight: 600; font-size: 0.92rem;
    color: var(--go-black) !important; padding: 22px 15px !important;
    position: relative; transition: color 0.3s; letter-spacing: -0.01em;
}
.main-navbar .nav-link::before {
    content: ''; position: absolute; bottom: 0; left: 15px; right: 15px;
    height: 3px; background: var(--go-gold); border-radius: 3px 3px 0 0;
    transform: scaleX(0); transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
}
.main-navbar .nav-link:hover::before,
.main-navbar .nav-link.active::before { transform: scaleX(1); }
.main-navbar .nav-link:hover { color: var(--go-gold-dark) !important; }
.navbar-toggler { border: 2px solid var(--go-gold) !important; border-radius: 10px; padding: 6px 10px; }
.navbar-toggler-icon { background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23F2A900' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important; }

/* Mega Dropdown */
.dropdown-mega { position: static; }
.dropdown-mega .dropdown-menu {
    width: 100%; border: none; border-radius: 0 0 var(--go-radius-lg) var(--go-radius-lg);
    box-shadow: var(--go-shadow-lg); padding: 30px 20px; margin-top: 0;
    border-top: 3px solid var(--go-gold); animation: megaFade 0.25s ease;
}
@keyframes megaFade { from{opacity:0;transform:translateY(-6px)} to{opacity:1;transform:translateY(0)} }
.mega-col-title {
    font-family: var(--font-display); font-weight: 700; font-size: 0.95rem;
    color: var(--go-black); padding: 8px 14px; margin-bottom: 4px;
    border-radius: 8px; background: var(--go-bg-warm);
    border-left: 3px solid var(--go-gold); transition: all 0.25s; cursor: pointer;
}
.mega-col-title:hover { background: var(--go-gold); color: var(--go-black); border-left-color: var(--go-black); }
.dropdown-mega .dropdown-menu .mega-link {
    color: var(--go-gray); font-size: 0.83rem; padding: 5px 14px;
    display: block; text-decoration: none; border-radius: 6px; transition: all 0.2s;
}
.dropdown-mega .dropdown-menu .mega-link:hover { color: var(--go-black); background: rgba(242,169,0,0.08); padding-left: 18px; }

/* ===== HERO ===== */
.hero { position: relative; background: var(--go-dark); overflow: hidden; }
.hero::after {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 120px;
    background: linear-gradient(to top, var(--go-white), transparent); z-index: 3; pointer-events: none;
    display: none;
}
.hero-grid {
    position: absolute; inset: 0;
    background-image: linear-gradient(rgba(242,169,0,0.04) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(242,169,0,0.04) 1px, transparent 1px);
    background-size: 60px 60px; pointer-events: none;
}
.hero-orb { position: absolute; border-radius: 50%; filter: blur(80px); pointer-events: none; }
.hero-orb-1 { width:500px;height:500px;background:var(--go-gold);top:-150px;right:-100px;opacity:0.12; }
.hero-orb-2 { width:300px;height:300px;background:var(--go-gold);bottom:-80px;left:-60px;opacity:0.08; }
.hero-orb-3 { width:180px;height:180px;background:var(--go-gold-light);top:40%;left:20%;opacity:0.06; }
.carousel-item { height: 520px; }
.hero-slide {
    display: flex; align-items: center; justify-content: center;
    height: 520px; position: relative; z-index: 2;
    text-align: center; padding: 60px 70px 60px;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 6px;
    background: rgba(242,169,0,0.12); color: var(--go-gold);
    font-family: var(--font-display); font-weight: 600; font-size: 0.82rem;
    padding: 7px 18px; border-radius: 100px; margin-bottom: 22px;
    letter-spacing: 0.04em; text-transform: uppercase;
    border: 1px solid rgba(242,169,0,0.2);
}
.hero-title {
    font-family: var(--font-display); font-weight: 900; font-size: 3.4rem;
    color: var(--go-white); line-height: 1.1; margin-bottom: 18px; letter-spacing: -0.02em;
}
.hero-title .gold { color: var(--go-gold); }
.hero-desc { color: rgba(255,255,255,0.6); font-size: 1.1rem; max-width: 560px; margin: 0 auto 32px; line-height: 1.75; }
.hero-btns { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn-gold {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--go-gold); color: var(--go-black);
    font-family: var(--font-display); font-weight: 700; font-size: 0.95rem;
    padding: 14px 32px; border-radius: 100px; text-decoration: none;
    border: none; transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
    box-shadow: var(--go-shadow-gold);
}
.btn-gold:hover { background: var(--go-gold-light); color: var(--go-black); transform: translateY(-2px); box-shadow: 0 12px 36px rgba(242,169,0,0.35); }
.btn-ghost {
    display: inline-flex; align-items: center; gap: 8px;
    background: transparent; color: rgba(255,255,255,0.8);
    font-family: var(--font-display); font-weight: 600; font-size: 0.95rem;
    padding: 13px 30px; border-radius: 100px; text-decoration: none;
    border: 2px solid rgba(255,255,255,0.15); transition: all 0.3s;
}
.btn-ghost:hover { background: var(--go-white); color: var(--go-black); border-color: var(--go-white); }
.hero .carousel-indicators { bottom: 30px; z-index: 5; }
.hero .carousel-indicators [data-bs-target] {
    width: 10px; height: 10px; border-radius: 50%; border: none;
    background: rgba(255,255,255,0.2); opacity: 1; transition: all 0.35s; margin: 0 5px;
}
.hero .carousel-indicators .active { background: var(--go-gold); width: 28px; border-radius: 10px; }

/* 3) Slider Arrows */
.hero-arrow {
    width: 48px; height: 48px; border-radius: 50%;
    background: rgba(255,255,255,0.1) !important; backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.15);
    opacity: 1; transition: all 0.3s;
    top: 50%; transform: translateY(-50%);
    z-index: 5;
    position: absolute;
}
.hero-arrow:hover { background: var(--go-gold) !important; border-color: var(--go-gold); }
.hero-arrow:hover .hero-arrow-icon { color: var(--go-black); }
.carousel-control-prev.hero-arrow { left: 20px; }
.carousel-control-next.hero-arrow { right: 20px; }
.hero-arrow-icon {
    display: flex; align-items: center; justify-content: center;
    color: var(--go-white); transition: color 0.3s;
}
.hero-arrow .visually-hidden { display: none; }

/* ===== FEATURES BAR ===== */
.features-bar {
    position: relative; z-index: 10;
    padding: 48px 0 20px;
    background: var(--go-white);
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.feature-card {
    display: flex; align-items: center; gap: 14px;
    padding: 22px 20px; border-radius: var(--go-radius);
    background: var(--go-white);
    border: 1px solid rgba(0,0,0,0.06);
    box-shadow: var(--go-shadow-sm);
    transition: all 0.3s; cursor: default;
}
.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--go-shadow);
    border-color: rgba(242,169,0,0.2);
}
.feature-icon-box {
    flex-shrink: 0; width: 48px; height: 48px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center; font-size: 1.25rem;
}
.fi-gold { background: rgba(242,169,0,0.1); color: var(--go-gold-dark); }
.fi-dark { background: rgba(26,26,26,0.06); color: var(--go-black); }
.fi-green { background: rgba(34,197,94,0.1); color: #16a34a; }
.fi-purple { background: rgba(139,92,246,0.1); color: #7c3aed; }
.feature-card h6 { font-family: var(--font-display); font-weight: 700; font-size: 0.82rem; color: var(--go-black); margin: 0; line-height: 1.35; }

/* ===== SECTION UTILITIES ===== */
.section-tag {
    display: inline-flex; align-items: center; gap: 6px;
    font-family: var(--font-display); font-weight: 600; font-size: 0.78rem;
    text-transform: uppercase; letter-spacing: 0.08em;
    color: var(--go-gold-dark); background: rgba(242,169,0,0.08);
    padding: 6px 16px; border-radius: 100px; margin-bottom: 14px;
}
.section-heading {
    font-family: var(--font-display); font-weight: 800; font-size: 2.2rem;
    color: var(--go-black); line-height: 1.15; margin-bottom: 16px; letter-spacing: -0.02em;
}
.section-heading .gold { color: var(--go-gold-dark); }
.section-desc { color: var(--go-gray-light); font-size: 1rem; max-width: 520px; line-height: 1.7; }

/* ===== GO MAX (Redesigned) ===== */
.gomax-section { padding: 30px 0; background: var(--go-bg); position: relative; }
.gomax-section::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--go-gradient-gold); }
.gomax-card {
    background: var(--go-white);
    border-radius: var(--go-radius-lg);
    box-shadow: var(--go-shadow-lg);
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.04);
}
.gomax-visual-wrap {
    background: linear-gradient(145deg, var(--go-bg-warm) 0%, #ede8dd 100%);
    padding: 40px;
    display: flex; align-items: center; justify-content: center;
    min-height: 100%;
    position: relative;
}
.gomax-visual-wrap::before {
    content: ''; position: absolute; top: 20px; left: 20px;
    width: 80px; height: 80px; border: 3px solid var(--go-gold);
    border-radius: 16px; opacity: 0.3;
}
.gomax-visual-wrap::after {
    content: ''; position: absolute; bottom: 20px; right: 20px;
    width: 50px; height: 50px; background: var(--go-gold);
    border-radius: 12px; opacity: 0.1;
}
.gomax-visual-wrap img {
    width: 100%; max-width: 380px;
    border-radius: var(--go-radius);
    filter: drop-shadow(0 12px 24px rgba(0,0,0,0.15));
    transition: transform 0.5s cubic-bezier(0.4,0,0.2,1);
}
.gomax-card:hover .gomax-visual-wrap img { transform: scale(1.03) rotate(-0.5deg); }
.gomax-content { padding: 40px 44px; }
.gomax-features {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 12px; margin: 24px 0 28px;
}
.gomax-feat-item {
    display: flex; gap: 12px; align-items: flex-start;
    padding: 14px; border-radius: 12px;
    background: var(--go-bg); border: 1px solid rgba(0,0,0,0.04);
    transition: all 0.25s;
}
.gomax-feat-item:hover { border-color: rgba(242,169,0,0.2); background: rgba(242,169,0,0.04); }
.gomax-feat-icon {
    flex-shrink: 0; width: 36px; height: 36px; border-radius: 10px;
    background: rgba(242,169,0,0.1); color: var(--go-gold-dark);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.95rem;
}
.gomax-feat-item strong {
    display: block; font-family: var(--font-display); font-weight: 700;
    font-size: 0.8rem; color: var(--go-black); margin-bottom: 2px;
}
.gomax-feat-item span {
    display: block; font-size: 0.75rem; color: var(--go-gray-light); line-height: 1.45;
}
.btn-dark-go {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--go-black); color: var(--go-white);
    font-family: var(--font-display); font-weight: 700; font-size: 0.92rem;
    padding: 14px 30px; border-radius: 100px; text-decoration: none;
    border: none; transition: all 0.3s; box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}
.btn-dark-go:hover { background: var(--go-charcoal); color: var(--go-gold); transform: translateY(-2px); box-shadow: 0 10px 28px rgba(0,0,0,0.2); }

/* ===== COUNTDOWN ===== */
.countdown-section { padding: 30px 0; background: var(--go-black); position: relative; overflow: hidden; }
.countdown-section::before {
    content: ''; position: absolute; inset: 0;
    background-image: linear-gradient(rgba(242,169,0,0.03) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(242,169,0,0.03) 1px, transparent 1px);
    background-size: 40px 40px; pointer-events: none;
}
.countdown-heading { font-family: var(--font-display); font-weight: 800; font-size: 2rem; color: var(--go-white); text-align: center; margin-bottom: 8px; }
.countdown-sub { color: rgba(255,255,255,0.45); text-align: center; margin-bottom: 40px; font-size: 0.95rem; }
.cd-card {
    background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.07);
    border-radius: var(--go-radius-lg); padding: 30px 24px; text-align: center;
    backdrop-filter: blur(6px);
}
.cd-label { font-family: var(--font-display); font-weight: 700; font-size: 1.05rem; color: var(--go-gold); margin-bottom: 18px; }
.cd-boxes { display: flex; gap: 10px; justify-content: center; }
.cd-box {
    background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.06);
    border-radius: 12px; padding: 12px 8px; min-width: 64px; text-align: center;
}
.cd-box .num { font-family: var(--font-display); font-weight: 900; font-size: 1.9rem; color: var(--go-white); line-height: 1; display: block; }
.cd-box .lbl { font-size: 0.68rem; color: rgba(255,255,255,0.4); text-transform: uppercase; letter-spacing: 0.1em; margin-top: 4px; display: block; }

/* ===== BOOKS (with Sinif Filter) ===== */
.books-section { padding: 30px 0 30px; background: var(--go-white); }

/* Sinif Filter Grid */
.sinif-filter-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 12px;
    margin-bottom: 36px;
}
.sinif-card-btn {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    background: var(--go-white); border-radius: var(--go-radius); padding: 18px 8px;
    border: 2px solid transparent; cursor: pointer;
    transition: all 0.3s; box-shadow: var(--go-shadow-sm);
}
.sinif-card-btn:hover { border-color: var(--go-gold); transform: translateY(-4px); box-shadow: var(--go-shadow); }
.sinif-card-btn:hover .sinif-num { color: var(--go-gold-dark); }
.sinif-card-btn.active { border-color: var(--go-gold); box-shadow: var(--go-shadow-gold); }
.sinif-card-btn.active .sinif-num { color: var(--go-gold-dark); }
.sinif-card-btn .sinif-num {
    font-family: var(--font-display); font-weight: 900; font-size: 2rem;
    color: var(--go-black); line-height: 1; transition: color 0.3s;
}
.sinif-card-btn .sinif-label {
    font-family: var(--font-display); font-weight: 600; font-size: 0.78rem;
    color: var(--go-gray-light); margin-top: 2px;
}

/* Book Cards */
.book-card {
    position: relative; border-radius: var(--go-radius-lg); overflow: hidden;
    background: var(--go-white); transition: all 0.4s cubic-bezier(0.4,0,0.2,1);
    border: 1px solid rgba(0,0,0,0.06);
    box-shadow: var(--go-shadow-sm);
    display: flex; flex-direction: column; height: 100%;
}
.book-card:hover { transform: translateY(-8px); box-shadow: var(--go-shadow-lg); border-color: rgba(242,169,0,0.3); }
/* 6) Ürün görselleri tam sığdır */
.book-card .book-img-wrap {
    overflow: hidden; aspect-ratio: 1/1;
    background: linear-gradient(145deg, var(--go-bg-warm) 0%, var(--go-bg) 100%);
    display: flex; align-items: center; justify-content: center; padding: 0;
}
.book-card img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.5s cubic-bezier(0.4,0,0.2,1);
}
.book-card:hover img { transform: scale(1.06); }
.book-card .book-info {
    padding: 16px 8px; flex: 1; display: flex; flex-direction: column;
    border-top: 1px solid rgba(0,0,0,0.04);
}
.book-card .book-info .book-series {
    font-family: var(--font-display); font-weight: 600; font-size: 0.68rem;
    text-transform: uppercase; letter-spacing: 0.06em;
    color: var(--go-gold-dark); margin-bottom: 4px;
}
.book-card .book-info .book-title {
    font-family: var(--font-display); font-weight: 700; font-size: 0.88rem;
    color: var(--go-black); line-height: 1.3; margin-bottom: 10px; flex: 1;
}
.book-card .book-info .book-badges {
    display: flex; gap: 6px; flex-wrap: wrap;
}
.book-card .book-info .book-badge-item {
    display: inline-flex; align-items: center; gap: 3px;
    font-size: 0.68rem; color: var(--go-gray-light);
    background: var(--go-bg); padding: 3px 8px; border-radius: 6px;
}
.book-card .book-info .book-badge-item i { font-size: 0.65rem; color: var(--go-gold-dark); }
.book-card .btn-book-bottom {
    display: flex; align-items: center; justify-content: center; gap: 6px;
    width: 100%; padding: 12px;
    background: var(--go-black); color: var(--go-white);
    font-family: var(--font-display); font-weight: 600; font-size: 0.82rem;
    text-decoration: none; transition: all 0.3s;
    border-top: 1px solid rgba(0,0,0,0.04);
    margin-top: auto;
}
.book-card .btn-book-bottom:hover { background: var(--go-gold); color: var(--go-black); }
.book-card .btn-book-bottom i { font-size: 0.75rem; transition: transform 0.3s; }
.book-card:hover .btn-book-bottom i { transform: translateX(3px); }

/* Book filter animation */
#bookGrid [data-sinif] { transition: opacity 0.35s, transform 0.35s; }
#bookGrid [data-sinif].filter-hide { display: none; }

/* ===== GO DİJİTAL ===== */
.dijital-section { padding: 30px 0; background: var(--go-white); }
.dijital-card { background: var(--go-black); border-radius: var(--go-radius-lg); padding: 56px 52px; position: relative; overflow: hidden; }
.dijital-card::before {
    content: ''; position: absolute; top: -40%; right: -15%;
    width: 500px; height: 500px; background: var(--go-gold);
    border-radius: 50%; filter: blur(120px); opacity: 0.08; pointer-events: none;
}
.dijital-card h2 { font-family: var(--font-display); font-weight: 800; font-size: 2rem; color: var(--go-white); margin-bottom: 14px; position: relative; }
.dijital-card p { color: rgba(255,255,255,0.55); font-size: 0.95rem; line-height: 1.7; margin-bottom: 28px; max-width: 460px; position: relative; }
/* 7) Dijital cihaz çizgileri turuncu */
.dijital-icons {
    font-size: 7rem; line-height: 1;
    color: var(--go-gold);
    display: flex; gap: 16px; justify-content: center; align-items: center;
    opacity: 0.35;
}

/* ===== FOOTER ===== */
footer { background: var(--go-dark); padding: 10px 0 0; color: rgba(255,255,255,0.7); }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.footer-brand img {
    height: 48px;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}
.footer-about {
    font-size: 0.88rem; line-height: 1.75;
    color: rgba(255,255,255,0.65); margin-bottom: 0;
}
footer h6 {
    font-family: var(--font-display); font-weight: 700; color: var(--go-white);
    font-size: 0.95rem; margin-bottom: 18px; position: relative; padding-bottom: 10px;
}
footer h6::after { content: ''; position: absolute; bottom: 0; left: 0; width: 28px; height: 3px; background: var(--go-gold); border-radius: 3px; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { padding: 5px 0; }
.footer-links a { color: rgba(255,255,255,0.7); text-decoration: none; font-size: 0.87rem; transition: all 0.25s; }
.footer-links a:hover { color: var(--go-gold); padding-left: 3px; }
.footer-contact { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 14px; font-size: 0.87rem; }
.footer-contact i { color: var(--go-gold); font-size: 0.9rem; margin-top: 3px; flex-shrink: 0; }
.footer-contact a, .footer-contact span { color: rgba(255,255,255,0.7); text-decoration: none; transition: color 0.25s; }
.footer-contact a:hover { color: var(--go-gold); }
.footer-social { display: flex; gap: 8px; margin-top: 16px; }
.footer-social a {
    display: flex; align-items: center; justify-content: center;
    width: 38px; height: 38px; border-radius: 10px;
    background: rgba(242,169,0,0.12); color: var(--go-gold);
    font-size: 1rem; text-decoration: none; transition: all 0.3s;
}
.footer-social a:hover { background: var(--go-gold); color: var(--go-black); transform: translateY(-2px); }
.footer-bottom { margin-top: 20px; padding: 14px 0; border-top: 1px solid rgba(255,255,255,0.08); text-align: center; font-size: 0.82rem; color: rgba(255,255,255,0.5); }

/* 9) Footer çift sütun layout */
.footer-double-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

/* ===== BACK TO TOP ===== */
.back-to-top {
    position: fixed; bottom: 28px; right: 28px; width: 46px; height: 46px;
    border-radius: 13px; background: var(--go-gold); color: var(--go-black);
    display: flex; align-items: center; justify-content: center; font-size: 1.15rem;
    z-index: 1000; opacity: 0; transform: translateY(16px);
    transition: all 0.35s; text-decoration: none; box-shadow: var(--go-shadow-gold);
}
.back-to-top.show { opacity: 1; transform: translateY(0); }
.back-to-top:hover { background: var(--go-black); color: var(--go-gold); }

/* ===== SCROLL ANIMATIONS ===== */
.reveal { opacity: 0; transform: translateY(28px); transition: all 0.65s cubic-bezier(0.4,0,0.2,1); }
.reveal.shown { opacity: 1; transform: translateY(0); }
.d1 { transition-delay: 0.08s; }
.d2 { transition-delay: 0.16s; }
.d3 { transition-delay: 0.24s; }
.d4 { transition-delay: 0.32s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1199px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .gomax-features { grid-template-columns: 1fr; }
    .gomax-content { padding: 30px 28px; }
}
@media (max-width: 991px) {
    .hero-title { font-size: 2.4rem; }
    .hero-slide { height: 440px; padding: 50px 60px 50px; }
    .carousel-item { height: 440px; }
    .section-heading { font-size: 1.75rem; }
    .dijital-card { padding: 36px 28px; }
    .main-navbar .nav-link { padding: 12px 15px !important; }
    .main-navbar .nav-link::before { display: none; }
    .hero-arrow { width: 40px; height: 40px; }
    .carousel-control-prev.hero-arrow { left: 10px; }
    .carousel-control-next.hero-arrow { right: 10px; }
    .gomax-visual-wrap { padding: 30px; }
}
@media (max-width: 767px) {
    .hero-title { font-size: 1.7rem; margin-bottom: 12px; }
    .hero-slide { height: 380px; padding: 30px 44px 40px; }
    .carousel-item { height: 380px; }
    .hero-badge { font-size: 0.72rem; padding: 5px 14px; margin-bottom: 14px; }
    .hero-desc { font-size: 0.82rem; margin-bottom: 18px; line-height: 1.6; }
    .hero-arrow { width: 30px; height: 30px; }
    .hero-arrow-icon svg { width: 14px; height: 14px; }
    .carousel-control-prev.hero-arrow { left: 4px; }
    .carousel-control-next.hero-arrow { right: 4px; }
    .hero .carousel-indicators { bottom: 8px; }
    .hero .carousel-indicators [data-bs-target] { width: 8px; height: 8px; margin: 0 3px; }
    .hero .carousel-indicators .active { width: 22px; }
    .hero-btns { flex-direction: column; align-items: stretch; gap: 8px; }
    .hero-btns .btn-gold,
    .hero-btns .btn-ghost { justify-content: center; width: 100%; padding: 10px 16px; font-size: 0.82rem; }
    /* Features mobilde çift sütun */
    .features-bar { padding: 30px 0 10px; }
    .features-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .feature-card { padding: 16px 14px; gap: 10px; }
    .feature-icon-box { width: 40px; height: 40px; font-size: 1.05rem; }
    .feature-card h6 { font-size: 0.75rem; }
    .cd-boxes { flex-wrap: wrap; gap: 8px; }
    .cd-box { min-width: 56px; }
    .gomax-section { padding: 20px 0; }
    .gomax-content { padding: 24px 20px; }
    .gomax-visual-wrap { padding: 24px; }
    .dijital-icons { font-size: 4rem; }
    /* Sinif filter - mobilde 4 sütun */
    .sinif-filter-grid { grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 24px; }
    .sinif-card-btn { padding: 14px 6px; }
    .sinif-card-btn .sinif-num { font-size: 1.6rem; }
    .sinif-card-btn .sinif-label { font-size: 0.7rem; }
    /* Mobil footer düzenlemeleri */
    .footer-brand-col { text-align: center; }
    .footer-brand { justify-content: center; margin-bottom: 12px; }
    .footer-brand img { height: 64px; }
    .footer-about { font-size: 0.92rem; line-height: 1.8; text-align: center; }
    .footer-social { justify-content: center; }
    .footer-double-col { grid-template-columns: 1fr 1fr; gap: 20px; }
    footer h6 { font-size: 0.9rem; }
    .footer-links a { font-size: 0.85rem; }
    .footer-contact { font-size: 0.85rem; }
}
@media (max-width: 400px) {
    .features-grid { gap: 8px; }
    .feature-card { padding: 14px 10px; }
    .hero-slide { height: 360px; padding: 24px 40px 36px; }
    .carousel-item { height: 360px; }
    .hero-title { font-size: 1.5rem; }
    .hero-desc { font-size: 0.78rem; margin-bottom: 14px; }
    .hero-btns .btn-gold,
    .hero-btns .btn-ghost { padding: 9px 14px; font-size: 0.78rem; }
}