@import url('https://fonts.googleapis.com/css2?family=Nunito+Sans:ital,opsz,wght@0,6..12,200..1000;1,6..12,200..1000&display=swap');

:root {
    --bg-color: #0A0A0F;
    --accent-color: #C9A96E;
    --text-primary: #FFFFFF;
    --text-secondary: #A0A0AB;
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.08);
    --font-main: 'Nunito Sans', sans-serif;
    --transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(201, 169, 110, 0.05) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(201, 169, 110, 0.05) 0%, transparent 40%);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 4rem 1.5rem;
    animation: fadeIn 1s ease-out;
}

header {
    text-align: center;
    margin-bottom: 5rem;
}

h1 {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 900;
    letter-spacing: -0.04em;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #FFFFFF 0%, #A0A0AB 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.accent {
    color: var(--accent-color);
    text-shadow: 0 0 30px rgba(201, 169, 110, 0.3);
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.nav-links {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-color);
    transition: var(--transition);
}

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

.nav-links a:hover::after {
    width: 100%;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 32px;
    padding: 3rem;
    backdrop-filter: blur(20px);
    margin-bottom: 2.5rem;
    transition: var(--transition);
}

.card:hover {
    border-color: rgba(201, 169, 110, 0.4);
    transform: translateY(-8px) scale(1.01);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.app-item {
    display: flex;
    align-items: center;
    gap: 2rem;
    text-decoration: none;
}

.app-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent-color) 0%, #927847 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--bg-color);
    box-shadow: 0 10px 30px rgba(201, 169, 110, 0.2);
}

.content-section {
    margin-bottom: 4rem;
}

h2 {
    color: var(--accent-color);
    font-size: 1.75rem;
    margin-bottom: 2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

h3 {
    color: #FFFFFF;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

ul {
    list-style: none;
    margin-bottom: 2rem;
}

li {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    padding-left: 2rem;
    position: relative;
    font-size: 1.05rem;
}

li::before {
    content: "→";
    color: var(--accent-color);
    position: absolute;
    left: 0;
    font-weight: bold;
}

footer {
    text-align: center;
    margin-top: 6rem;
    padding-top: 3rem;
    border-top: 1px solid var(--card-border);
    color: var(--text-secondary);
    font-size: 0.9rem;
    opacity: 0.6;
}

/* Language Switcher */
.lang-switch {
    position: fixed;
    top: 2rem;
    right: 2rem;
    display: flex;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 0.4rem;
    border-radius: 14px;
    border: 1px solid var(--card-border);
    z-index: 100;
    backdrop-filter: blur(10px);
}

.lang-btn {
    padding: 0.5rem 1rem;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 800;
    font-size: 0.75rem;
    transition: var(--transition);
    border: none;
    background: transparent;
    color: var(--text-secondary);
}

.lang-btn.active {
    background: var(--accent-color);
    color: var(--bg-color);
}

/* Hidden elements for localized content */
[lang="tr"] { display: none; }
body.lang-tr [lang="tr"] { display: block; }
body.lang-tr [lang="en"] { display: none; }

@media (max-width: 768px) {
    .container { padding: 2rem 1.25rem; }
    h1 { font-size: 2.5rem; }
    .nav-links { gap: 1.5rem; }
    .card { padding: 2rem; }
    .app-item { flex-direction: column; text-align: center; }
}