/* ===================================
   TEMA DEĞİŞKENLERİ (Renk Stratejisi)
   =================================== */
:root {
    --bg-color: #fcfbf9;
    --text-color: #1a1a1a;
    --accent-color: #d4af37;
    --card-bg: #ffffff;
    --border-color: #eaeaea;
}

[data-theme="dark"] {
    --bg-color: #0f1115;
    --text-color: #e0e6ed;
    --accent-color: #00e5ff;
    --card-bg: #1a1d24;
    --border-color: #2d313a;
}

/* ===================================
   GENEL SİTE AYARLARI
   =================================== */
body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'IBM Plex Sans', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
}

/* ===================================
   ÜST MENÜ (HEADER)
   =================================== */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--bg-color);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

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

/* ===================================
   NAVİGASYON MENÜSÜ
   =================================== */
.nav-menu {
    display: flex;
    align-items: center;
    gap: 25px;
    margin-left: auto;
    margin-right: 30px;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.95rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

/* ===================================
   AÇILIR MENÜ (DROPDOWN)
   =================================== */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: var(--card-bg);
    min-width: 220px;
    box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.3);
    z-index: 1001;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    top: 100%;
    left: -20px;
    overflow: hidden;
    animation: slideDown 0.3s ease forwards;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content a {
    color: var(--text-color);
    padding: 12px 16px;
    text-decoration: none;
    display: block;
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.dropdown-content a:last-child {
    border-bottom: none;
}

.dropdown-content a:hover {
    background-color: var(--bg-color);
    color: var(--accent-color);
    padding-left: 24px;
    border-left: 3px solid var(--accent-color);
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===================================
   NAV AVATAR (PROFİL FOTOĞRAFI)
   =================================== */
.nav-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--accent-color);
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.nav-avatar:hover {
    transform: scale(1.05);
}

/* ===================================
   TEMA & DİL BUTONLARI
   =================================== */
.theme-btn {
    background: none;
    border: 2px solid var(--accent-color);
    color: var(--text-color);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.theme-btn svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.theme-btn:hover {
    background-color: var(--accent-color);
    color: var(--bg-color);
}

.lang-btn {
    background: none;
    border: 2px solid var(--accent-color);
    color: var(--text-color);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 700;
    font-size: 0.9rem;
}

.lang-btn:hover {
    background-color: var(--accent-color);
    color: var(--bg-color);
    box-shadow: 0 0 10px var(--accent-color);
}

/* ===================================
   HAMBURGER MENÜ
   =================================== */
.hamburger-btn {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    padding: 5px;
    margin-left: 5px;
    transition: color 0.3s ease;
}

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

/* ===================================
   KAHRAMAN BÖLÜMÜ (HERO)
   =================================== */
.hero {
    padding: 80px 0;
    text-align: left;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 10px;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.8;
    max-width: 600px;
}

.terminal-text {
    font-family: 'IBM Plex Mono', monospace;
    color: var(--accent-color);
    font-size: 1rem;
    display: block;
    margin-bottom: 20px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    margin-top: 35px;
    flex-wrap: wrap;
}

/* ===================================
   BUTONLAR
   =================================== */
.btn-icon,
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    border-radius: 6px;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-icon {
    border: 1px solid var(--border-color);
    color: var(--text-color);
    background-color: transparent;
}

.btn-icon:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-3px);
}

.btn-icon svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.btn-primary {
    background-color: var(--accent-color);
    color: var(--bg-color);
    border: 1px solid var(--accent-color);
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-3px);
}

.btn-primary svg {
    width: 20px;
    height: 20px;
}

.btn-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--text-color);
    color: var(--bg-color);
    padding: 8px 16px;
    text-decoration: none;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.9rem;
    border-radius: 6px;
    font-weight: 600;
    border: 1px solid var(--text-color);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.btn-link:hover {
    opacity: 0.8;
    transform: translateY(-2px);
}

/* ===================================
   PROJELER
   =================================== */
.bolum-basligi {
    font-size: 2rem;
    margin-bottom: 30px;
    border-left: 4px solid var(--accent-color);
    padding-left: 15px;
}

.proje-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.proje-karti {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 25px;
    border-radius: 8px;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.proje-karti:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.proje-karti h3 {
    margin-top: 0;
    font-size: 1.4rem;
}

.tech-stack {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.85rem;
    color: var(--accent-color);
    margin-bottom: 15px;
    display: block;
}

/* ===================================
   SERTİFİKALAR
   =================================== */
.sertifika-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.sertifika-karti {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.sertifika-karti:hover {
    transform: translateX(5px);
    border-color: var(--accent-color);
    border-left: 4px solid var(--accent-color);
}

.sertifika-karti h3 {
    margin: 0 0 10px 0;
    font-size: 1.2rem;
}

.kurum-etiketi {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.85rem;
    color: var(--bg-color);
    background-color: var(--text-color);
    padding: 4px 10px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 15px;
}

.sertifika-alt {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 15px;
    margin-top: 10px;
}

.tarih {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.85rem;
    opacity: 0.7;
}

.dogrulama-linki {
    color: var(--accent-color);
    text-decoration: none;
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 600;
    font-size: 0.9rem;
    transition: opacity 0.3s ease;
}

.dogrulama-linki:hover {
    opacity: 0.7;
}

/* ===================================
   YETKİNLİK ETİKETLERİ
   =================================== */
.yetkinlik-grubu {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 15px;
    margin-bottom: 10px;
}

.yetkinlik-etiket {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.75rem;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    padding: 2px 8px;
    border-radius: 4px;
    opacity: 0.9;
}

/* ===================================
   FOOTER
   =================================== */
.site-footer {
    margin-top: 80px;
    padding: 30px 0;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.85rem;
    opacity: 0.8;
}

.footer-email {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: opacity 0.3s ease;
}

.footer-email:hover {
    opacity: 0.7;
    text-decoration: underline;
}

/* ===================================
   HEADER ACTIONS (inline style yerine)
   =================================== */
.header-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* Proje kartı resmi */
.proje-resmi {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 15px;
    border: 1px solid var(--border-color);
}

/* Proje kartı alt butonlar */
.proje-butonlar {
    margin-top: 20px;
    display: flex;
    gap: 10px;
    align-items: center;
}

/* İletişim linki vurgusu */
.nav-link--iletisim {
    color: var(--accent-color);
}

/* Logo wrapper */
.logo-link {
    text-decoration: none;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Tüm sertifikalar butonu */
.sertifika-tumu {
    text-align: center;
    margin-top: 40px;
}

/* Sertifikalar bölümü */
.sertifikalar-bolumu {
    margin-top: 60px;
}

/* ===================================
   MOBİL UYUM (RESPONSIVE)
   =================================== */
@media (max-width: 600px) {
    .site-footer {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

@media (max-width: 1100px) {
    .hamburger-btn {
        display: block !important;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 85px;
        left: 0;
        width: 100%;
        background-color: var(--card-bg);
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
        padding: 20px 0;
        gap: 15px;
        text-align: center;
        z-index: 999;
    }

    .nav-menu.aktif {
        display: flex !important;
    }

    .dropdown-content {
        position: static;
        display: none;
        box-shadow: none;
        border: none;
        background-color: transparent;
        margin-top: 10px;
    }

    .dropdown:hover .dropdown-content {
        display: block;
    }
}