/* ========================================
   Kişisel Website - Ana Stil Dosyası
   ======================================== */

:root {
    /* Tema renkleri: cyan, gri, mor */
    --color-bg: #f8f7fc;
    --color-bg-alt: #ffffff;
    --color-text: #101018;
    --color-text-muted: #afafaf;
    --color-accent: #00e0ff;
    --color-accent-hover: #8e5dcc;
    --color-accent-light: #e6fbff;
    --color-border: #afafaf;
    --font-sans: 'Orienta', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Orienta', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 20px rgba(0, 224, 255, 0.08);
    --shadow-hover: 0 8px 30px rgba(142, 93, 204, 0.16);
    --transition: 0.25s ease;
    /* Buton çerçeve + glow (cyan/mor) */
    --btn-glow: 0 0 20px rgba(0, 224, 255, 0.35), 0 0 40px rgba(142, 93, 204, 0.15);
    --btn-glow-hover: 0 0 25px rgba(0, 224, 255, 0.5), 0 0 50px rgba(142, 93, 204, 0.25);
    --btn-gradient: linear-gradient(135deg, #00e0ff 0%, #8e5dcc 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    background-image:
        radial-gradient(circle at 20% 20%, rgba(0, 224, 255, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(142, 93, 204, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 1px 1px, rgba(175, 175, 175, 0.04) 1px, transparent 0);
    background-size: 100% 100%, 100% 100%, 24px 24px;
    background-position: 0 0, 0 0, 0 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ========== Header ========== */
.site-header {
    background: rgba(248, 247, 252, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    height: 70px;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: -0.02em;
    white-space: nowrap;
    flex-shrink: 0;
}

.logo:hover {
    color: var(--color-accent);
}

.logo-mark {
    width: 100px;
    height: 100px;
    border-radius: 999px;
    display: block;
}

.logo-text {
    display: inline-block;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    justify-content: flex-start;
}

.main-nav a {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--color-text-muted);
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
    white-space: nowrap;
}

.nav-cart-icon {
    font-size: 1.1rem;
    display: inline;
    background: none;
    box-shadow: none;
    border-radius: 0;
}

/* Sağ üst kullanıcı / auth linkleri */
.auth-links {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: 1.5rem;
    white-space: nowrap;
    font-size: 0.9rem;
}

.auth-user {
    color: var(--color-text-muted);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-accent);
    background: var(--color-accent-light);
}

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
}

/* ========== Main Content ========== */
.main-content {
    flex: 1;
}

/* ========== Hero Section ========== */
.hero {
    padding: 4rem 0 5rem;
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, rgba(243, 239, 255, 0.6) 0%, transparent 60%);
}

.hero::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(124, 58, 237, 0.08) 0%, transparent 70%);
    top: -200px;
    right: -150px;
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.06) 0%, transparent 70%);
    bottom: -100px;
    left: -100px;
    pointer-events: none;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 3rem;
    align-items: center;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.25rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    color: #000000;
}

.hero-title .highlight {
    color: inherit;
    position: relative;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-muted);
    margin-bottom: 2rem;
    max-width: 480px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
    width: 280px;
    height: 280px;
}

.hero-shape {
    width: 100%;
    height: 100%;
    position: relative;
    z-index: 1;
    background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent) 50%, #6366f1 100%);
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    animation: morph 8s ease-in-out infinite;
    box-shadow:
        0 25px 50px -12px rgba(91, 33, 182, 0.25),
        0 0 0 1px rgba(255, 255, 255, 0.1) inset;
}

.hero-visual::before {
    content: '';
    position: absolute;
    inset: -15px;
    border-radius: 40% 60% 60% 40% / 50% 50% 50% 50%;
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.15) 0%, transparent 50%);
    animation: morph 8s ease-in-out infinite reverse;
    z-index: 0;
}

@keyframes morph {
    0%, 100% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
    50% { border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%; }
}

/* ========== Buttons (sadece çerçeve + glow + renk geçişi) ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    background: linear-gradient(var(--color-bg), var(--color-bg)) padding-box,
                var(--btn-gradient) border-box;
    color: var(--color-accent);
    box-shadow: var(--btn-glow);
}

.btn:hover {
    box-shadow: var(--btn-glow-hover);
    transform: translateY(-1px);
    color: var(--color-accent-hover);
}

.btn-primary {
    color: var(--color-accent);
}

.btn-primary:hover {
    color: var(--color-accent-hover);
}

.btn-secondary {
    /* Aynı çerçeve stilini kullanıyor */
}

.btn-secondary:hover {
    /* hover yukarıda .btn:hover ile */
}

/* Header'daki link butonları (Giriş Yap, Çıkış vb.) */
.btn-link {
    padding: 0.35rem 0.75rem;
    font-size: 0.9rem;
    background: linear-gradient(var(--color-bg), var(--color-bg)) padding-box,
                var(--btn-gradient) border-box;
    color: var(--color-accent);
    border: 2px solid transparent;
    box-shadow: 0 0 12px rgba(26, 95, 74, 0.2);
}

.btn-link:hover {
    box-shadow: var(--btn-glow);
    color: var(--color-accent-hover);
}

/* ========== Quick Links / Cards ========== */
.quick-links {
    padding: 4rem 0;
    background: linear-gradient(180deg, var(--color-bg-alt) 0%, rgba(243, 239, 255, 0.5) 100%);
    position: relative;
}

.quick-links::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
    opacity: 0.8;
}

.section-title {
    font-family: var(--font-display);
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
    display: inline-block;
    width: 100%;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    margin: 0.75rem auto 0;
    background: var(--btn-gradient);
    border-radius: 2px;
    opacity: 0.9;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 1.5rem;
}

/* Hizmetler sayfası: 3 sütun, kartlar daha geniş ve kısa */
.services-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.service-card {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.service-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.6rem;
    flex-shrink: 0;
}

.service-card p {
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card {
    background: linear-gradient(white, white) padding-box,
                var(--btn-gradient) border-box;
    padding: 2rem;
    border-radius: var(--radius);
    text-decoration: none;
    color: inherit;
    border: 2px solid transparent;
    box-shadow: var(--shadow), 0 0 20px rgba(91, 33, 182, 0.08);
    transition: all var(--transition);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover), 0 0 28px rgba(91, 33, 182, 0.18), 0 0 50px rgba(99, 102, 241, 0.08);
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent-light) 0%, rgba(237, 233, 254, 0.8) 100%);
    border-radius: var(--radius-sm);
    border: 1px solid rgba(124, 58, 237, 0.2);
    box-shadow: 0 4px 14px rgba(91, 33, 182, 0.08);
}

.card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.card p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* ========== Page Hero ========== */
.page-hero {
    padding: 3rem 0 2rem;
    background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
    border-bottom: 1px solid var(--color-border);
}

.page-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    position: relative;
}

.page-hero {
    position: relative;
}

.page-hero .container::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    margin-top: 1rem;
    background: var(--btn-gradient);
    border-radius: 2px;
    opacity: 0.85;
}

.page-subtitle {
    color: var(--color-text-muted);
    font-size: 1.1rem;
}

/* ========== Content Section ========== */
.content-section {
    padding: 3rem 0;
}

/* Arama kutusu (Dersler, Projeler, Ürünler, Hizmetler) */
.section-search-wrap {
    margin-bottom: 2rem;
}

.section-search-wrap label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--color-text-muted);
}

.section-search {
    width: 100%;
    max-width: 400px;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    font-family: var(--font-sans);
    font-size: 1rem;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    background: linear-gradient(white, white) padding-box,
                var(--btn-gradient) border-box;
    color: var(--color-text);
    box-shadow: 0 0 15px rgba(91, 33, 182, 0.06);
    transition: box-shadow var(--transition), border-color var(--transition);
}

.section-search::placeholder {
    color: var(--color-text-muted);
}

.section-search:focus {
    outline: none;
    box-shadow: 0 0 20px rgba(91, 33, 182, 0.15);
}

.search-wrap {
    position: relative;
    display: inline-block;
}

.search-wrap::before {
    content: '🔍';
    position: absolute;
    left: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.1rem;
    pointer-events: none;
}

/* ========== Giriş / Kayıt formları ========== */
.auth-container {
    max-width: 440px;
    margin: 0 auto;
}

.auth-form {
    background: linear-gradient(white, white) padding-box,
                var(--btn-gradient) border-box;
    border: 2px solid transparent;
    border-radius: var(--radius);
    padding: 2.5rem;
    box-shadow: var(--shadow), 0 0 24px rgba(91, 33, 182, 0.1);
}

.auth-form .form-group {
    margin-bottom: 1.5rem;
}

.auth-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--color-text);
}

.auth-form input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-sans);
    font-size: 1rem;
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    background: linear-gradient(var(--color-bg), var(--color-bg)) padding-box,
                var(--btn-gradient) border-box;
    color: var(--color-text);
    box-shadow: 0 0 12px rgba(91, 33, 182, 0.06);
    transition: box-shadow var(--transition);
}

.auth-form input::placeholder {
    color: var(--color-text-muted);
}

.auth-form input:focus {
    outline: none;
    box-shadow: 0 0 18px rgba(91, 33, 182, 0.2);
}

.auth-form .btn-primary {
    width: 100%;
    margin-top: 0.5rem;
    padding: 0.85rem 1.5rem;
}

.auth-switch {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
    text-align: center;
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

.auth-switch a {
    color: var(--color-accent);
    font-weight: 600;
    text-decoration: none;
}

.auth-switch a:hover {
    color: var(--color-accent-hover);
    text-decoration: underline;
}

/* ========== Projects ========== */
.projects-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.project-card {
    background: linear-gradient(white, white) padding-box,
                var(--btn-gradient) border-box;
    padding: 2rem;
    border-radius: var(--radius);
    border: 2px solid transparent;
    box-shadow: var(--shadow), 0 0 20px rgba(91, 33, 182, 0.08);
    transition: all var(--transition);
}

.project-card:hover {
    box-shadow: var(--shadow-hover), 0 0 28px rgba(91, 33, 182, 0.18), 0 0 50px rgba(99, 102, 241, 0.08);
}

.project-header {
    margin-bottom: 1rem;
}

.project-year {
    display: inline-block;
    font-size: 0.85rem;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.project-card h2 {
    font-size: 1.5rem;
    font-family: var(--font-display);
}

.project-description {
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    font-size: 0.8rem;
    padding: 0.25rem 0.75rem;
    background: var(--color-accent-light);
    color: var(--color-accent);
    border-radius: 999px;
    font-weight: 500;
}

.project-link {
    color: var(--color-accent);
    font-weight: 600;
    text-decoration: none;
}

.project-link:hover {
    text-decoration: underline;
}

/* ========== Ürünler ========== */
.urunler-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 2rem;
    align-items: flex-start;
}

.urun-filters {
    background: #ffffff;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    padding: 1.25rem 1.1rem;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
    font-size: 0.9rem;
}

.urun-filters-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.urun-filters-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.urun-filters-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: 0.35rem;
}

.urun-filter-option {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    cursor: pointer;
}

.urun-filter-option input[type="checkbox"] {
    width: 14px;
    height: 14px;
    border-radius: 3px;
}

.urun-filter-option span {
    font-size: 0.9rem;
}

.urunler-main {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.urunler-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
}

@media (min-width: 900px) {
    .urunler-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (min-width: 1200px) {
    .urunler-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

.urunler-grid .project-card {
    padding: 0.85rem;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.urunler-grid .project-card h2 {
    font-size: 1rem;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.urun-card .project-description {
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
    max-height: 4.2em; /* yaklaşık 3 satır */
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
}

.urun-card .project-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.urun-fiyat {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-accent);
}

.urun-actions {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    align-items: center;
    margin-top: auto;
    text-align: center;
}

.urun-qty-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
}

.urun-qty-btn {
    width: 24px;
    height: 24px;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: #ffffff;
    color: var(--color-text-muted);
    font-size: 0.75rem;
    line-height: 1;
    display: none; /* Başlangıçta gizli, JS ile adet > 0 olunca gösterilecek */
    align-items: center;
    justify-content: center;
    padding: 0;
    cursor: pointer;
    transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.urun-qty-btn:hover {
    background: var(--color-accent-light);
    color: var(--color-accent);
    border-color: rgba(129, 140, 248, 0.6);
    box-shadow: 0 0 0 1px rgba(129, 140, 248, 0.15);
}

.btn-sm {
    padding: 0.35rem 0.8rem;
    font-size: 0.8rem;
}

@media (max-width: 900px) {
    .urunler-layout {
        grid-template-columns: 1fr;
    }

    .urun-filters {
        order: 2;
    }

    .urunler-main {
        order: 1;
    }
}

.urun-detail-layout {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
    gap: 2rem;
    align-items: flex-start;
}

.urun-detail-media {
    background: radial-gradient(circle at top left, rgba(129, 140, 248, 0.25), transparent 55%),
                radial-gradient(circle at bottom right, rgba(236, 72, 153, 0.18), transparent 60%),
                #020617;
    border-radius: var(--radius);
    padding: 1.75rem;
    min-height: 260px;
    box-shadow: var(--shadow), 0 0 28px rgba(15, 23, 42, 0.5);
    color: #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: center;
}

.urun-detail-media-inner {
    max-width: 360px;
    text-align: center;
}

.urun-detail-media-label {
    display: inline-block;
    font-size: 0.8rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(199, 210, 254, 0.85);
    margin-bottom: 0.75rem;
}

.urun-detail-media-inner p {
    font-size: 0.95rem;
    color: rgba(226, 232, 240, 0.9);
}

.urun-detail-info h2 {
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
}

.urun-detail-description {
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.urun-detail-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

@media (max-width: 768px) {
    .urun-detail-layout {
        grid-template-columns: 1fr;
    }
}

/* ========== Sepet ========== */
.cart-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.cart-wrapper {
    background: linear-gradient(white, white) padding-box,
                var(--btn-gradient) border-box;
    border-radius: var(--radius);
    border: 2px solid transparent;
    box-shadow: var(--shadow);
    padding: 1.5rem;
    overflow-x: auto;
}

.cart-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.cart-table thead {
    background: var(--color-accent-light);
}

.cart-table th,
.cart-table td {
    padding: 0.75rem 0.9rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

.cart-table th {
    font-weight: 600;
    color: var(--color-text);
}

.cart-table tbody tr:nth-child(even) {
    background: rgba(243, 239, 255, 0.4);
}

.cart-summary {
    margin-top: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.cart-summary-row {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    align-items: baseline;
    font-size: 1rem;
}

.cart-summary-row strong {
    font-size: 1.2rem;
    color: var(--color-accent);
}

.cart-note {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    text-align: right;
}

.cart-checkout-wrap {
    margin-top: 1.25rem;
    text-align: right;
}

.btn-checkout {
    padding: 0.85rem 2rem;
    font-size: 1.05rem;
}

.cart-qty-cell {
    white-space: nowrap;
}

.cart-qty-cell .cart-qty {
    display: inline-block;
    min-width: 2rem;
    text-align: center;
    font-weight: 600;
}

.qty-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.6rem;
    height: 1.6rem;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: #fff;
    color: var(--color-accent);
    text-decoration: none;
    font-size: 0.9rem;
    line-height: 1;
    transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.qty-btn:hover {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
    box-shadow: 0 0 8px rgba(91, 33, 182, 0.25);
}

/* Sepet onay modali */
.cart-confirm-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 40;
}

.cart-confirm-overlay[hidden] {
    display: none;
}

.cart-confirm-modal {
    background: #ffffff;
    border-radius: var(--radius);
    padding: 1.75rem 1.5rem;
    max-width: 380px;
    width: 90%;
    box-shadow: 0 22px 60px rgba(15, 23, 42, 0.35);
}

.cart-confirm-modal h2 {
    font-size: 1.15rem;
    margin-bottom: 0.75rem;
}

.cart-confirm-modal p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: 1.25rem;
}

.cart-confirm-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* ========== Lessons ========== */
.lessons-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.lesson-card {
    background: linear-gradient(white, white) padding-box,
                var(--btn-gradient) border-box;
    padding: 2rem;
    border-radius: var(--radius);
    border: 2px solid transparent;
    box-shadow: var(--shadow), 0 0 20px rgba(91, 33, 182, 0.08);
    transition: all var(--transition);
}

.lesson-card:hover {
    box-shadow: var(--shadow-hover), 0 0 28px rgba(91, 33, 182, 0.18), 0 0 50px rgba(99, 102, 241, 0.08);
}

.lesson-header {
    margin-bottom: 1rem;
}

.lesson-semester {
    font-size: 0.85rem;
    color: var(--color-accent);
    font-weight: 600;
}

.lesson-card h2 {
    font-size: 1.35rem;
    font-family: var(--font-display);
}

.lesson-description {
    color: var(--color-text-muted);
    margin-bottom: 1rem;
}

.lesson-topics ul {
    margin-left: 1.5rem;
    margin-top: 0.5rem;
}

.lesson-topics li {
    margin-bottom: 0.25rem;
}

/* ========== Contact ========== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 3rem;
    max-width: 800px;
}

.contact-info {
    background: var(--color-accent-light);
    padding: 2rem;
    border-radius: var(--radius);
    height: fit-content;
}

.contact-info h3 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.contact-info ul {
    list-style: none;
}

.contact-info li {
    margin-bottom: 0.75rem;
    color: var(--color-text-muted);
}

.contact-form .form-group {
    margin-bottom: 1.5rem;
}

.contact-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-sans);
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: white;
    transition: border-color var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
}

.alert-success {
    background: var(--color-accent-light);
    color: var(--color-accent-hover);
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
}

/* ========== CV ========== */
.cv-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 3rem;
    align-items: start;
}

.cv-sidebar {
    top: 90px;
    left: max(1.5rem, calc((100vw - 1100px) / 2 + 1.5rem));
    width: 260px;
    max-width: calc(100vw - 2rem);
}

.cv-main {
    min-width: 0;
}

.cv-block {
    margin-bottom: 2rem;
}

.cv-block h3 {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-accent);
}

.cv-block ul {
    list-style: none;
}

.cv-block ul li {
    margin-bottom: 0.5rem;
    color: var(--color-text-muted);
}

.cv-main .cv-block h3 {
    margin-top: 2rem;
}

.cv-main .cv-block h3:first-child {
    margin-top: 0;
}

.cv-item {
    margin-bottom: 2rem;
}

.cv-item-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.cv-item h4 {
    font-size: 1.15rem;
}

.cv-date {
    font-size: 0.9rem;
    color: var(--color-accent);
    font-weight: 500;
}

.cv-item p {
    margin-top: 0.5rem;
    color: var(--color-text-muted);
}

.cv-download {
    margin-top: 2.5rem;
}

/* ========== Footer ========== */
.site-footer {
    background: linear-gradient(180deg, #1a1625 0%, var(--color-text) 100%);
    color: rgba(255, 255, 255, 0.8);
    padding: 2.5rem 0;
    margin-top: auto;
    position: relative;
}

.site-footer::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    height: 3px;
    background: var(--btn-gradient);
    opacity: 0.7;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
}

.footer-content p {
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
}

.footer-links a:hover {
    color: white;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        border-bottom: 1px solid var(--color-border);
        padding: 1rem;
        display: none;
    }

    .main-nav.active {
        display: block;
    }

    .main-nav ul {
        flex-direction: column;
    }

    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .cards-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .service-card p {
        -webkit-line-clamp: 6;
    }

    .hero-visual {
        margin: 0 auto;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .cv-layout {
        grid-template-columns: 1fr;
    }

    .cv-sidebar {
        position: static;
    }
}