:root {
    --primary: #06b6d4;
    --primary-glow: rgba(6, 182, 212, 0.3);
    --secondary: #10b981;
    --secondary-glow: rgba(16, 185, 129, 0.3);
    --accent: #8b5cf6;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg: #020617;
    --sidebar-bg: #0b1120;
    --card-bg: rgba(30, 41, 59, 0.4);
    --text: #f1f5f9;
    --text-dim: #94a3b8;
    --border: rgba(255, 255, 255, 0.08);
    --glass: rgba(255, 255, 255, 0.03);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; background-color: var(--bg); color: var(--text); display: flex; overflow: hidden; height: 100vh; }

/* Sidebar Navigation */
aside {
    width: 340px; height: 100vh; background: var(--sidebar-bg);
    border-right: 1px solid var(--border); display: flex; flex-direction: column;
    padding: 2.5rem; overflow-y: auto; flex-shrink: 0;
    box-shadow: 10px 0 30px rgba(0,0,0,0.5);
    z-index: 200;
}

.brand { font-family: 'Outfit', sans-serif; font-size: 1.6rem; font-weight: 700; color: var(--text); display: flex; align-items: center; gap: 12px; margin-bottom: 3.5rem; text-decoration: none; }
.brand span { background: linear-gradient(90deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.nav-section { margin-bottom: 2.5rem; }
.nav-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.15em; color: var(--text-dim); margin-bottom: 1rem; font-weight: 800; opacity: 0.6; }
.nav-link { 
    display: flex; align-items: center; gap: 10px; padding: 0.8rem 1rem; color: var(--text-dim); text-decoration: none; 
    border-radius: 14px; font-size: 0.95rem; font-weight: 500; transition: all 0.25s; margin-bottom: 0.4rem; cursor: pointer;
}
.nav-link:hover, .nav-link.active { background: rgba(6, 182, 212, 0.08); color: var(--primary); }
.nav-link.active { border-left: 4px solid var(--primary); background: rgba(6, 182, 212, 0.12); color: var(--text); }

/* Main Workspace */
main { flex: 1; height: 100vh; overflow-y: auto; scroll-behavior: smooth; position: relative; }
.content-wrapper { padding: 4rem 10% 10rem; }

.sticky-header { 
    display: flex; justify-content: space-between; align-items: center; 
    margin-bottom: 5rem; position: sticky; top: -4rem; background: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(20px); z-index: 100; padding: 1.5rem 10%; margin: -4rem -10% 5rem;
}

.lang-control { 
    display: flex; background: #1e293b; border: 1px solid var(--border); 
    border-radius: 99px; padding: 4px; box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.lang-btn { 
    padding: 8px 20px; border-radius: 99px; border: none; background: transparent; 
    color: var(--text-dim); cursor: pointer; font-weight: 700; font-size: 0.85rem; transition: 0.3s;
}
.lang-btn.active { background: var(--primary); color: white; box-shadow: 0 4px 10px var(--primary-glow); }

/* Typography */
h1 { font-family: 'Outfit', sans-serif; font-size: 4rem; margin-bottom: 1.5rem; letter-spacing: -0.03em; }
h1 span { display: block; background: linear-gradient(to right, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
h2 { font-family: 'Outfit', sans-serif; font-size: 2.5rem; margin-bottom: 2.5rem; color: var(--primary); }
h3 { font-family: 'Outfit', sans-serif; font-size: 1.6rem; margin: 3rem 0 1.2rem; display: flex; align-items: center; gap: 10px; }
p { color: var(--text-dim); font-size: 1.15rem; max-width: 900px; margin-bottom: 2.5rem; line-height: 1.6; }

/* Media Containers */
.media-container {
    margin: 4rem 0;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    background: #000;
}

.media-container img, .media-container video {
    width: 100%;
    height: auto;
    display: block;
}

.img-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 4rem 0;
}

.img-grid .media-container {
    margin: 0;
}

/* Feature Details */
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: 2rem; margin: 3rem 0; }
.info-card { background: var(--glass); border: 1px solid var(--border); border-radius: 24px; padding: 2.5rem; transition: all 0.3s; }
.info-card:hover { border-color: var(--primary); background: rgba(255,255,255,0.05); }
.info-card h4 { font-size: 1.3rem; margin-bottom: 1rem; color: var(--primary); font-family: 'Outfit', sans-serif; }

/* Tabs */
.tabs-container {
    margin: 3rem 0;
}

.tabs-nav {
    display: flex;
    gap: 4px;
    background: rgba(30, 41, 59, 0.4);
    border-radius: 16px;
    padding: 6px;
    margin-bottom: 2rem;
    border: 1px solid var(--border);
}

.tab-btn {
    flex: 1;
    padding: 1rem 2rem;
    background: transparent;
    border: none;
    border-radius: 12px;
    color: var(--text-dim);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    text-align: center;
}

.tab-btn:hover {
    color: var(--primary);
    background: rgba(6, 182, 212, 0.08);
}

.tab-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.tab-content.active {
    display: block;
}

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

/* Parameters Table */
.data-panel { border: 1px solid var(--border); border-radius: 20px; overflow: hidden; margin: 3rem 0; background: var(--glass); }
table { width: 100%; border-collapse: collapse; text-align: left; }
th { padding: 1.5rem; background: rgba(255,255,255,0.04); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; border-bottom: 1px solid var(--border); }
td { padding: 1.5rem; border-bottom: 1px solid var(--border); font-size: 0.95rem; color: var(--text-dim); }
code { font-family: 'Fira Code', monospace; color: var(--secondary); background: rgba(16,185,129,0.1); padding: 3px 8px; border-radius: 6px; font-weight: 500; font-size: 0.9em; }

/* Lang Logic */
.en { display: block; }
.tr { display: none; }

body[data-lang="tr"] .en { display: none !important; }
body[data-lang="tr"] .tr { display: block !important; }

/* Inline elements fixing for lang */
span.en, strong.en, b.en { display: inline !important; }
span.tr, strong.tr, b.tr { display: none !important; }
body[data-lang="tr"] span.en, body[data-lang="tr"] strong.en, body[data-lang="tr"] b.en { display: none !important; }
body[data-lang="tr"] span.tr, body[data-lang="tr"] strong.tr, body[data-lang="tr"] b.tr { display: inline !important; }

/* Spinner */
.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(6, 182, 212, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s ease-in-out infinite;
    margin: 5rem auto;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Page Transitions */
#page-content {
    opacity: 1;
    transition: opacity 0.3s ease;
}

#page-content.fade-out {
    opacity: 0;
}
/* Copy Button */
.code-container { position: relative; }
.copy-btn {
    position: absolute; right: 12px; top: 12px;
    background: rgba(255, 255, 255, 0.05); border: 1px solid var(--border);
    border-radius: 8px; color: var(--text-dim); padding: 5px 10px;
    font-size: 0.75rem; cursor: pointer; transition: 0.2s;
    font-family: 'Inter', sans-serif; font-weight: 600;
}
.copy-btn:hover { background: var(--primary); color: white; border-color: var(--primary); }
.copy-btn.copied { background: var(--secondary); color: white; border-color: var(--secondary); }