/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-dark: #0b0e14;
    --nav-bg: rgba(11, 14, 20, 0.96);
    --card-bg: #1a1f29;
    --amber: #ff9f0a;
    --amber-hover: #e68a00;
    --text-bright: #ffffff;
    --text-dim: #a0a0a0;
    --border-color: rgba(255, 255, 255, 0.05);
    --transition: 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
}

:root[data-theme="light"] {
    --bg-dark: #f0f2f5;
    --nav-bg: rgba(255, 255, 255, 0.96);
    --card-bg: #ffffff;
    --text-bright: #111111;
    --text-dim: #555555;
    --border-color: rgba(0, 0, 0, 0.1);
}

/* --- Theme Settings Widget --- */
.theme-settings-widget {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 9999;
}

.theme-settings-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--amber);
    color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    border: none;
    transition: transform 0.3s;
}

.theme-settings-btn:hover {
    transform: rotate(45deg);
}

.theme-panel {
    position: absolute;
    bottom: 80px;
    right: 0;
    background: var(--card-bg);
    width: 250px;
    padding: 20px;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: 0 15px 40px rgba(0,0,0,0.5);
    transform: scale(0);
    transform-origin: bottom right;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.theme-panel.active {
    transform: scale(1);
}

.theme-panel h4 {
    margin-bottom: 15px;
    font-size: 14px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.theme-option {
    margin-bottom: 20px;
}

.theme-option label {
    display: block;
    font-size: 12px;
    color: var(--text-dim);
    margin-bottom: 8px;
    font-weight: 700;
}

@media (max-width: 768px) {
    .theme-settings-widget {
        bottom: 20px;
        right: auto;
        left: 20px;
    }
    .theme-panel {
        right: auto;
        left: 0;
        transform-origin: bottom left;
    }
}

/* --- Genel Reset --- */
* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', sans-serif; scroll-behavior: smooth; }
body { background-color: var(--bg-dark); color: var(--text-bright); line-height: 1.6; overflow-x: hidden; }

/* KÖKTEN ÇÖZÜM: Mavi linkleri her yerde öldürür */
a { text-decoration: none; color: inherit; transition: 0.3s ease; }

/* --- NAVBAR --- */
nav {
    width: 100%; height: 90px; background: var(--nav-bg); backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 1000;
    display: flex; align-items: center;
}
.nav-container { width: 100%; max-width: 1400px; margin: 0 auto; padding: 0 50px; display: flex; justify-content: space-between; align-items: center; }
.logo-wrapper { display: flex; align-items: center; gap: 14px; }
.logo-icon { width: 44px; height: 44px; background: linear-gradient(135deg, var(--amber), #ffcc33); border-radius: 12px; display: flex; justify-content: center; align-items: center; color: #000; font-size: 20px; box-shadow: 0 0 25px rgba(255, 159, 10, 0.2); }
.logo-text { font-size: 24px; font-weight: 800; color: var(--text-bright); letter-spacing: -0.8px; }
.logo-text .highlight { color: var(--amber); }

.nav-links { display: flex; gap: 40px; list-style: none; }
.nav-links a { color: var(--text-dim); font-size: 15px; font-weight: 500; position: relative; padding: 8px 0; }
.nav-links a:hover, .nav-links a.active { color: var(--amber); }
.nav-links a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px; background: var(--amber); transition: 0.3s; }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-right { display: flex; align-items: center; gap: 25px; }
.theme-controls { display: flex; gap: 15px; color: var(--text-dim); }
.nav-divider { width: 1px; height: 30px; background: var(--border-color); }
.auth-group { display: flex; align-items: center; gap: 25px; }
.login-link { color: var(--text-bright); font-weight: 600; }
.register-btn { background: var(--amber); color: #000; padding: 12px 28px; border-radius: 12px; font-weight: 700; transition: 0.3s; }
.register-btn:hover { transform: translateY(-3px); box-shadow: 0 10px 25px rgba(255, 159, 10, 0.3); }

/* --- HERO SECTION --- */
.hero-section {
    position: relative; height: calc(100vh - 90px); display: flex; justify-content: center; align-items: center; text-align: center;
    background: linear-gradient(rgba(11, 14, 20, 0.85), rgba(11, 14, 20, 0.95)), url('/img/hero-bg.jpg') no-repeat center center/cover;
}
.hero-content h1 { font-size: clamp(2.5rem, 6vw, 4.2rem); font-weight: 800; margin-bottom: 20px; line-height: 1.1; }
.hero-content .highlight { color: var(--amber); }
.hero-btn { background: var(--amber); color: #000; padding: 18px 45px; border-radius: 14px; font-weight: 800; display: inline-flex; align-items: center; gap: 12px; transition: 0.3s; }
.hero-btn:hover { transform: translateY(-5px); box-shadow: 0 15px 30px rgba(255, 159, 10, 0.4); }

/* --- KURSLAR SECTION --- */
.courses-container { padding: 100px 10%; background: var(--bg-dark); }
.section-header { text-align: center; margin-bottom: 60px; }
.section-title { font-size: 2.8rem; font-weight: 800; margin-bottom: 10px; }
.section-title span { color: var(--amber); }
.section-header p { color: var(--text-dim); }

.courses-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 40px; }

.course-card {
    background: var(--card-bg); border-radius: 24px; overflow: hidden;
    border: 1px solid var(--border-color); transition: var(--transition); position: relative;
    display: flex; flex-direction: column;
}
.course-card:hover { transform: translateY(-15px); border-color: var(--amber); box-shadow: 0 30px 60px rgba(0,0,0,0.5); }

.course-img { position: relative; height: 220px; background-size: cover; background-position: center; transition: var(--transition); transform: translateZ(0); }
.course-card:hover .course-img { transform: scale(1.1); }

.course-badge {
    position: absolute; top: 20px; left: 20px; z-index: 10;
    background: rgba(255, 159, 10, 0.9); backdrop-filter: blur(5px);
    color: #000; padding: 6px 14px; border-radius: 12px; font-size: 12px; font-weight: 800; display: flex; align-items: center; gap: 6px;
}

.img-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(to bottom, transparent 40%, var(--card-bg) 100%); }

.course-body { padding: 30px; position: relative; background: var(--card-bg); z-index: 5; margin-top: -1px; flex-grow: 1; display: flex; flex-direction: column; }
.course-meta { display: flex; gap: 15px; margin-bottom: 15px; }
.course-meta span { font-size: 11px; color: var(--amber); font-weight: 700; text-transform: uppercase; }

.course-body h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; color: var(--text-bright); }
.course-body p { color: var(--text-dim); font-size: 14px; margin-bottom: 25px; min-height: 45px; }

.course-footer {
    display: flex; justify-content: space-between; align-items: center;
    padding-top: 20px; border-top: 1px solid var(--border-color); margin-top: auto;
}
.price-tag .label { display: block; font-size: 10px; color: var(--text-dim); }
.price-tag .value { font-size: 18px; font-weight: 800; color: var(--text-bright); }

.course-action-btn { color: var(--amber); font-weight: 700; font-size: 15px; display: flex; align-items: center; gap: 8px; }
.course-action-btn:hover { color: var(--text-bright); gap: 12px; }

/* View All Container FIX */
.view-all-container { text-align: center; margin-top: 80px; width: 100%; }
.btn-outline-amber {
    border: 2px solid var(--amber); color: var(--amber); padding: 16px 40px; border-radius: 12px;
    font-weight: 700; display: inline-flex; align-items: center; gap: 10px; transition: 0.3s;
}
.btn-outline-amber:hover { background: var(--amber); color: #000; box-shadow: 0 0 20px rgba(255, 159, 10, 0.3); }

/* Mobil Uyumluluk */
@media (max-width: 1024px) {
    .nav-links, .nav-divider { display: none; }
    .nav-container { padding: 0 20px; }
    .courses-grid { grid-template-columns: 1fr; }
    .menu-toggle { display: block !important; }

    /* Mobile Menu Activated via JS inline display block/flex */
    .nav-list-mobile {
        position: absolute; top: 89px; left: 0; width: 100%;
        background: var(--nav-bg); backdrop-filter: blur(20px);
        flex-direction: column; padding: 20px; border-bottom: 1px solid var(--border-color); z-index: 999;
    }

    .search-form {
        position: absolute; top: 215px; left: 0; width: 100%;
        background: var(--nav-bg); padding: 15px 20px;
        border-bottom: 1px solid var(--border-color); z-index: 998;
        justify-content: center;
        border-radius: 0; border-left: none; border-right: none;
    }

    .search-form input {
        width: 100% !important; padding: 12px 15px !important; font-size: 16px !important;
        background: rgba(255,255,255,0.05) !important;
        border: 1px solid var(--border-color) !important;
        border-radius: 10px !important;
    }
    
    .auth-group {
        position: absolute; top: 295px; left: 0; width: 100%;
        background: var(--nav-bg); padding: 20px;
        flex-direction: column; align-items: stretch !important; border-bottom: 1px solid var(--border-color); z-index: 998;
    }
    
    .auth-group a, .auth-group div {
        justify-content: center; text-align: center;
    }
}