/* --- Değişkenler --- */
:root {
    --color-bg: #121212;        /* Koyu Arka Plan */
    --color-panel: #1E1E1E;     /* Panel Rengi */
    --color-red: #FF3333;       /* Neon Kırmızı */
    --color-red-dark: #CC0000;
    --color-text: #E0E0E0;      /* Açık Gri Metin */
    --color-text-dim: #A0A0A0;
    --color-border: #333333;
    --sidebar-width: 260px;
    --header-height: 60px;
    --font-heading: 'Oswald', sans-serif;
    --font-body: 'Roboto', sans-serif;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    overflow: hidden; /* Dashboard için */
}

a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; border-radius: 4px; }

/* --- Layout --- */
.app-layout { display: flex; height: 100vh; }

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--color-panel);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    z-index: 1000;
}

.logo-box {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 20px;
    border-bottom: 1px solid var(--color-border);
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: 1px;
}

.red { color: var(--color-red); }

.nav-links { flex: 1; padding: 20px 0; overflow-y: auto; }
.nav-links a {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 20px;
    color: var(--color-text-dim);
    font-weight: 500;
    border-left: 3px solid transparent;
}
.nav-links a:hover, .nav-links a.active {
    background-color: rgba(255, 51, 51, 0.1);
    color: var(--color-text);
    border-left-color: var(--color-red);
}
.nav-links svg { opacity: 0.7; }
.nav-links a:hover svg, .nav-links a.active svg { opacity: 1; color: var(--color-red); }

.sidebar-footer { padding: 20px; border-top: 1px solid var(--color-border); font-size: 0.8rem; text-align: center; }
.sidebar-footer a { color: var(--color-red); }

/* --- Content Area --- */
.content-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.top-header {
    height: var(--header-height);
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

.header-title { font-family: var(--font-heading); font-size: 1.2rem; color: var(--color-text); letter-spacing: 1px; }

.menu-toggle { display: none; background: none; border: none; color: var(--color-text); cursor: pointer; }

.btn { display: inline-block; padding: 8px 20px; border-radius: 4px; font-weight: bold; font-family: var(--font-heading); text-transform: uppercase; letter-spacing: 1px; }
.btn-red { background-color: var(--color-red); color: #fff; }
.btn-red:hover { background-color: var(--color-red-dark); }

/* --- Mobile Menu --- */
.mobile-menu {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-color: var(--color-bg);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    transform: translateY(-100%);
    transition: 0.3s;
}
.mobile-menu.active { transform: translateY(0); }
.close-menu { position: absolute; top: 20px; right: 20px; background: none; border: none; font-size: 2rem; color: var(--color-text); cursor: pointer; }
.mobile-menu a { font-family: var(--font-heading); font-size: 1.5rem; color: var(--color-text); }

/* --- Content Scroll --- */
.content-scroll { flex: 1; overflow-y: auto; padding: 30px; }

/* --- Hero Banner --- */
.hero-card {
    background: linear-gradient(135deg, #1E1E1E, #252525);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 30px;
    position: relative;
    overflow: hidden;
}

.hero-text h1 { font-family: var(--font-heading); font-size: 2.5rem; line-height: 1.2; margin-bottom: 15px; }
.red-text { color: var(--color-red); }
.hero-text p { color: var(--color-text-dim); margin-bottom: 25px; font-size: 1.1rem; }

.hero-stats { display: flex; gap: 40px; }
.stat strong { display: block; font-size: 2rem; color: var(--color-red); font-family: var(--font-heading); }
.stat span { font-size: 0.9rem; color: var(--color-text-dim); text-transform: uppercase; }

.hero-visual { width: 200px; height: 150px; display: flex; align-items: center; justify-content: center; opacity: 0.5; }
.abstract-globe { width: 100px; height: 100px; border: 2px solid var(--color-red); border-radius: 50%; position: relative; }
.abstract-globe::before { content: ''; position: absolute; top: 50%; left: 0; width: 100%; height: 2px; background: var(--color-red); }
.abstract-globe::after { content: ''; position: absolute; top: 0; left: 50%; width: 2px; height: 100%; background: var(--color-red); }

/* --- Grid Section --- */
.section-head { display: flex; align-items: center; gap: 20px; margin-bottom: 20px; }
.section-head h2 { font-family: var(--font-heading); font-size: 1.5rem; text-transform: uppercase; }
.line { flex: 1; height: 1px; background-color: var(--color-border); }

.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.b2b-card { background-color: var(--color-panel); padding: 25px; border-radius: 8px; border: 1px solid var(--color-border); transition: 0.3s; }
.b2b-card:hover { border-color: var(--color-red); transform: translateY(-5px); }
.icon-box { color: var(--color-red); margin-bottom: 15px; }
.b2b-card h3 { font-family: var(--font-heading); font-size: 1.2rem; margin-bottom: 10px; }
.b2b-card p { color: var(--color-text-dim); font-size: 0.9rem; margin-bottom: 20px; }
.link-red { color: var(--color-red); font-weight: bold; font-size: 0.9rem; text-transform: uppercase; }

/* --- About & Testimonials --- */
.content-block { max-width: 900px; margin: 0 auto; }
.content-block h1 { font-family: var(--font-heading); font-size: 2rem; }
.red-line { border: 0; height: 2px; background: var(--color-red); margin: 20px 0; width: 100px; }
.split-layout { display: flex; gap: 40px; margin-bottom: 40px; align-items: center; }
.split-layout .text { flex: 1; }
.split-layout .image { flex: 1; }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; text-align: center; border-top: 1px solid var(--color-border); padding-top: 30px; }
.metric-card .num { display: block; font-size: 2rem; font-weight: bold; color: var(--color-red); font-family: var(--font-heading); }
.metric-card .label { font-size: 0.8rem; color: var(--color-text-dim); text-transform: uppercase; }

.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 20px; }
.testi-card { background-color: var(--color-panel); padding: 30px; border-radius: 8px; border: 1px solid var(--color-border); position: relative; }
.quote-mark { font-size: 3rem; color: var(--color-red); line-height: 0; opacity: 0.5; position: absolute; top: 30px; left: 20px; }
.feedback { margin-bottom: 20px; padding-left: 30px; font-style: italic; color: #ccc; }
.user-meta strong { display: block; font-family: var(--font-heading); color: var(--color-red); }
.user-meta span { font-size: 0.8rem; color: var(--color-text-dim); }

/* --- Contact & Legal --- */
.contact-container { display: grid; grid-template-columns: 1fr 2fr; gap: 40px; }
.info-panel { background-color: var(--color-panel); padding: 30px; border-radius: 8px; border: 1px solid var(--color-border); }
.info-panel h3 { font-family: var(--font-heading); margin-bottom: 20px; color: var(--color-red); }
.contact-row { display: flex; align-items: center; gap: 10px; margin-bottom: 15px; color: var(--color-text-dim); }

.dark-form .form-group { margin-bottom: 20px; }
.dark-form label { display: block; margin-bottom: 5px; color: var(--color-text); font-weight: bold; font-size: 0.9rem; }
.dark-form input, .dark-form select, .dark-form textarea { width: 100%; background-color: #2A2A2A; border: 1px solid var(--color-border); padding: 12px; color: var(--color-white); border-radius: 4px; font-family: var(--font-body); }
.dark-form input:focus { border-color: var(--color-red); outline: none; }
.btn-full { width: 100%; background-color: var(--color-red); color: #fff; padding: 12px; border: none; font-weight: bold; cursor: pointer; text-transform: uppercase; font-family: var(--font-heading); }
.btn-full:hover { background-color: var(--color-red-dark); }

.legal-doc { background-color: var(--color-panel); padding: 40px; border-radius: 8px; border: 1px solid var(--color-border); max-width: 800px; margin: 0 auto; }
.legal-doc h1 { font-family: var(--font-heading); }
.legal-doc h3 { color: var(--color-red); margin-top: 30px; margin-bottom: 10px; font-family: var(--font-heading); }

/* --- Footer --- */
.content-footer { margin-top: 40px; text-align: center; color: var(--color-text-dim); font-size: 0.8rem; border-top: 1px solid var(--color-border); padding-top: 20px; }

/* --- Responsive --- */
@media (max-width: 992px) {
    .sidebar { position: fixed; transform: translateX(-100%); height: 100%; top: 0; left: 0; }
    .sidebar.active { transform: translateX(0); }
    .main-content { margin-left: 0; width: 100%; }
    .mobile-header, .menu-toggle { display: block; } /* Header ve buton görünür */
    .hero-card { flex-direction: column; text-align: center; }
    .hero-stats { justify-content: center; }
    .hero-visual { margin-top: 20px; }
    .split-layout, .contact-container { grid-template-columns: 1fr; }
}