@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Syncopate:wght@700&display=swap');

:root {
    --bg-darker: #050508;
    --bg-dark: #0c0c10;
    --bg-card: #121218;
    --primary: #ff0000;
    --primary-hover: #cc0000;
    --text-white: #ffffff;
    --text-gray: #a1a1aa;
    --text-muted: #52525b;
    --border-color: #27272a;
    --border-hover: #ff0000;
    --transition: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --grid-color: rgba(255, 0, 0, 0.03);
}

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

body {
    font-family: 'Space Grotesk', sans-serif;
    background-color: var(--bg-darker);
    /* Sıra dışı kırmızı ızgara (cyber grid) desenli arka plan */
    background-image: 
        linear-gradient(var(--grid-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
    background-size: 30px 30px;
    color: var(--text-white);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.5;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
    flex: 1;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
    margin-bottom: 4rem;
}

.logo {
    font-family: 'Syncopate', sans-serif;
    font-weight: 700;
    font-size: 1.25rem;
    text-transform: uppercase;
    color: var(--text-white);
    text-decoration: none;
    letter-spacing: -0.05em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo span {
    color: var(--primary);
    position: relative;
}

/* Hero Section */
.hero {
    max-width: 900px;
    margin: 0 auto 5rem auto;
    text-align: left;
    border-left: 4px solid var(--primary);
    padding-left: 2rem;
}

/* Girişimci Rozeti */
.badge-dev {
    display: inline-block;
    background: rgba(255, 0, 0, 0.1);
    border: 1px solid var(--primary);
    color: var(--primary);
    padding: 0.35rem 0.85rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.15em;
    margin-bottom: 1.5rem;
    border-radius: 2px;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.hero h1 span {
    color: var(--primary);
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-gray);
    max-width: 750px;
    font-weight: 300;
}

/* Social Links */
.social-icons {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 4px;
    background: var(--bg-dark);
    border: 2px solid var(--border-color);
    color: var(--text-gray);
    text-decoration: none;
    transition: var(--transition);
}

.social-icon:hover {
    color: var(--text-white);
    border-color: var(--primary);
    background: var(--primary);
    transform: translateY(-3px);
    box-shadow: 4px 4px 0px 0px #000;
}

/* Systems Grid */
.grid-systems {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 5rem;
}

/* Brutalist Keskin Kart Tasarımı */
.card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 4px; /* Keskin köşe */
    padding: 2.5rem 2rem;
    text-decoration: none;
    color: var(--text-white);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 270px;
    transition: var(--transition);
    position: relative;
}

.card:hover {
    border-color: var(--border-hover);
    /* Sert Brutalist Sağ-Alt Gölge Efekti */
    transform: translate(-6px, -6px);
    box-shadow: 6px 6px 0px 0px var(--primary);
}

.card-icon {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    color: var(--primary);
    display: inline-block;
    transition: var(--transition);
}

.card:hover .card-icon {
    transform: scale(1.05);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.card-desc {
    color: var(--text-gray);
    font-size: 0.95rem;
    font-weight: 300;
    flex-grow: 1;
    margin-bottom: 2rem;
}

.card-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: var(--transition);
}

.card:hover .card-link {
    color: var(--text-white);
    gap: 0.75rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 4rem 0;
    border-top: 2px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: auto;
    background: var(--bg-dark);
}

footer a {
    color: var(--text-gray);
    text-decoration: none;
    transition: var(--transition);
}

footer a:hover {
    color: var(--primary);
}

/* Forms & Admin Panel (Brutalist Arayüz) */
.admin-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    padding: 3rem 2.5rem;
    max-width: 700px;
    margin: 4rem auto;
    box-shadow: 8px 8px 0px 0px var(--border-color);
}

.admin-title {
    font-family: 'Syncopate', sans-serif;
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
    text-transform: uppercase;
    color: var(--primary);
}

.form-group {
    margin-bottom: 1.75rem;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-gray);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-control {
    width: 100%;
    background: var(--bg-darker);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    padding: 0.85rem 1rem;
    color: var(--text-white);
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 4px 4px 0px 0px rgba(255, 0, 0, 0.2);
}

textarea.form-control {
    resize: vertical;
    min-height: 140px;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-white);
    border: 2px solid var(--primary);
    padding: 1rem 1.5rem;
    border-radius: 4px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    cursor: pointer;
    width: 100%;
    transition: var(--transition);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary:hover {
    background: transparent;
    color: var(--primary);
    box-shadow: 4px 4px 0px 0px #000;
    transform: translate(-2px, -2px);
}

.alert {
    padding: 1.25rem;
    border-radius: 4px;
    margin-bottom: 2rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-left: 4px solid currentColor;
}

.alert-success {
    background: rgba(16, 185, 129, 0.05);
    color: #10b981;
    border: 2px solid rgba(16, 185, 129, 0.1);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.05);
    color: #ef4444;
    border: 2px solid rgba(239, 68, 68, 0.1);
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 1.5rem;
}

.admin-header h2 {
    font-family: 'Syncopate', sans-serif;
    font-size: 1.35rem;
    text-transform: uppercase;
    font-weight: 700;
}

.btn-logout {
    background: transparent;
    border: 2px solid rgba(239, 68, 68, 0.4);
    color: #ef4444;
    padding: 0.5rem 1.25rem;
    border-radius: 4px;
    font-weight: 700;
    text-decoration: none;
    font-size: 0.8rem;
    text-transform: uppercase;
    transition: var(--transition);
}

.btn-logout:hover {
    background: #ef4444;
    color: var(--text-white);
    border-color: #ef4444;
    transform: translateY(-2px);
}

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

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.25rem;
    }
    .grid-systems {
        grid-template-columns: 1fr;
    }
    .admin-card {
        padding: 2rem 1.5rem;
    }
}

/* SSS (FAQ) Alanı */
.faq-section {
    max-width: 900px;
    margin: 4rem auto 2rem auto;
    padding: 0 1rem;
}

.faq-title {
    font-family: 'Syncopate', sans-serif;
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.faq-item {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 4px;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--border-hover);
}

.faq-item summary {
    padding: 1.25rem 1.5rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    text-transform: uppercase;
    letter-spacing: -0.01em;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    color: var(--primary);
    font-size: 1.25rem;
    font-weight: 400;
    transition: var(--transition);
}

.faq-item[open] {
    border-color: var(--primary);
    box-shadow: 4px 4px 0px 0px var(--primary);
}

.faq-item[open] summary::after {
    content: '−';
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.5rem 1.5rem 1.5rem;
    color: var(--text-gray);
    font-size: 0.95rem;
    font-weight: 300;
    line-height: 1.6;
    border-top: 1px solid rgba(255, 255, 255, 0.03);
    padding-top: 1rem;
}