/* Genel Ayarlar ve Tema Renkleri */
:root {
    --bg-dark: #0f0f0f;
    --bg-card: #1f1f1f;
    --text-light: #f5f5f5;
    --accent-color: #00ff80; /* Neon Yeşil */
    --font-header: 'Montserrat', sans-serif;
    --font-body: 'Roboto Mono', monospace;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-light);
    font-family: var(--font-body);
    line-height: 1.6;
}

/* Tipografi */
h1, h2, h3 {
    font-family: var(--font-header);
    text-transform: uppercase;
}

h1 { font-size: 3rem; margin-bottom: 1rem; }
h2 { 
    font-size: 2rem; 
    margin-bottom: 2rem; 
    border-bottom: 3px solid var(--accent-color);
    display: inline-block;
    padding-bottom: 5px;
}

.accent-text {
    color: var(--accent-color);
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 100px 0;
    min-height: 100vh;
}

/* Navigasyon */
.fixed-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(15, 15, 15, 0.95);
    z-index: 1000;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
}

.logo {
    font-size: 1.5rem; 
    color: var(--text-light);
    letter-spacing: 4px; 
    display: flex; 
    align-items: center;
    gap: 10px;
    font-weight: 700;
}

.logo .sub-title {
    font-size: 0.65rem;
    letter-spacing: 1px;
    color: rgba(245, 245, 245, 0.7); 
    font-family: var(--font-body); 
    text-transform: none;
    opacity: 0.6;
    margin-left: 5px;
}

.logo .accent-text {
    color: var(--accent-color);
    font-weight: 900;
    margin: 0 5px;
}

nav ul {
    list-style: none;
    display: flex;
}

nav ul li a {
    color: var(--text-light);
    text-decoration: none;
    padding: 10px 15px;
    margin-left: 10px;
    transition: color 0.3s, border-bottom 0.3s;
}

nav ul li a:hover,
nav ul li a.active { /* JS ile .active sınıfı eklenecek */
    color: var(--accent-color);
    border-bottom: 1px solid var(--accent-color);
}

/* Butonlar */
.btn {
    display: inline-block;
    padding: 12px 25px;
    text-decoration: none;
    text-transform: uppercase;
    font-family: var(--font-header);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.primary-btn {
    background-color: var(--accent-color);
    color: var(--bg-dark);
    font-weight: bold;
    box-shadow: 0 0 5px rgba(0, 255, 128, 0.5);
}

.primary-btn:hover {
    box-shadow: 0 0 15px var(--accent-color), 0 0 25px rgba(0, 255, 128, 0.5);
    transform: translateY(-2px);
}

/* Hero Bölümü ve İmleç Efekti */
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero-section {
    background-image: url('../img/hero-grid.svg');
    background-size: cover;
    background-repeat: repeat;
    display: flex;
    align-items: center;
    text-align: left;
    padding-top: 200px;
}

.hero-sub {
    font-size: 1.1rem;
    opacity: 0.85;
    margin-top: 10px;
}

.hero-bottom {
    font-size: 0.95rem;
    opacity: 0.7;
    margin-top: 5px;
}

/* JS ile h1 içine eklenen imleç için stil */
.cursor {
    color: var(--accent-color);
    display: inline-block; /* Yazının hemen yanında kalmasını sağlar */
    font-weight: normal; 
}

/* Hakkımda Bölümü */
.about-grid {
    display: flex;
    gap: 30px;
}

.philosophy-box {
    background-color: var(--bg-card);
    padding: 25px;
    border: 1px solid var(--accent-color);
    flex: 1;
    transition: transform 0.3s ease;
}

.philosophy-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 255, 128, 0.3);
}

.philosophy-box h3 {
    color: var(--accent-color);
    margin-bottom: 10px;
}

/* Projeler Bölümü */
.filter-btns {
    margin-bottom: 30px;
}

.filter-btn {
    background-color: var(--bg-dark);
    color: var(--text-light);
    border: 1px solid var(--text-light);
    padding: 8px 15px;
    margin-right: 10px;
    transition: background-color 0.3s, color 0.3s;
}

.filter-btn.active, .filter-btn:hover {
    background-color: var(--accent-color);
    color: var(--bg-dark);
    border-color: var(--accent-color);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.project-card {
    background-color: var(--bg-card);
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: scale(1.02);
    border-color: var(--accent-color);
    box-shadow: 0 0 10px rgba(0, 255, 128, 0.4);
}

.project-link {
    color: var(--accent-color);
    text-decoration: none;
    display: block;
    margin-top: 10px;
}

/* İletişim Bölümü */
.contact-form input, 
.contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    background-color: var(--bg-card);
    color: var(--text-light);
    border: 1px solid rgba(255, 255, 255, 0.3);
    font-family: var(--font-body);
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--accent-color);
    outline: none;
    box-shadow: 0 0 5px var(--accent-color);
}

.contact-desc {
    margin-bottom: 30px;
    opacity: 0.85;
    font-size: 1rem;
}

.contact-form button {
    font-family: var(--font-body);
    letter-spacing: 1px;
    font-size: 0.9rem;
}

.contact-mini {
    margin-top: 25px;
    font-size: 0.85rem;
    opacity: 0.7;
}

.disabled-btn {
    opacity: 0.7;
    cursor: not-allowed;
}

.form-note {
    margin-top: 20px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.experience-summary {
    margin-top: 60px; /* Kutucuklardan sonra belirgin bir boşluk bırakır */
    padding: 30px;
    background-color: var(--bg-card); /* Kutucuklarla aynı arka plan rengi */
    border-left: 5px solid var(--accent-color); /* Vurgu çizgisi ekler */
}

.summary-heading {
    color: var(--accent-color);
    font-family: var(--font-body); /* Roboto Mono (Terminal) fontunu kullanır */
    font-size: 1.1rem;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.experience-summary p {
    font-size: 0.95rem;
    margin-bottom: 15px;
}

/* Kalın yazıların vurgu renginde olması için */
.experience-summary strong {
    color: var(--accent-color);
}