* { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: 'Segoe UI', 'Poppins', Tahoma, Geneva, Verdana, sans-serif;
            background: #0a0f1c;
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
            position: relative;
            overflow-x: hidden;
        }
        body::before {
            content: '';
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 120px;
            background: repeating-linear-gradient(transparent 0px, transparent 98px, rgba(80, 140, 180, 0.08) 98px, rgba(80, 140, 180, 0.12) 100px);
            pointer-events: none;
            z-index: 0;
        }
        .star {
            position: fixed;
            background: rgba(255, 235, 160, 0.7);
            border-radius: 50%;
            pointer-events: none;
            animation: twinkle 3s infinite alternate;
        }
        @keyframes twinkle {
            0% { opacity: 0.2; transform: scale(1); }
            100% { opacity: 1; transform: scale(1.2); }
        }
        .site-header {
            position: fixed;
            top: 24px;
            left: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(10, 15, 28, 0.6);
            backdrop-filter: blur(8px);
            padding: 8px 18px;
            border-radius: 60px;
            z-index: 100;
        }
        .site-header .crescent { font-size: 28px; filter: drop-shadow(0 0 4px rgba(245,197,66,0.5)); }
        .site-header .site-title { font-size: 20px; font-weight: 500; color: #f0ede8; letter-spacing: 1px; }
        .about-btn {
            position: fixed;
            top: 28px;
            right: 28px;
            background: rgba(10, 15, 28, 0.6);
            backdrop-filter: blur(8px);
            color: #f5c542;
            border-radius: 40px;
            width: 40px;
            height: 40px;
            font-size: 20px;
            cursor: pointer;
            z-index: 100;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        /* Alttaki margin, sabit (position:fixed) duran sosyal medya çubuğunun
           en alttaki butonu örtmesini engelliyor. */
        .container { max-width: 460px; width: 100%; position: relative; z-index: 10; margin-top: 40px; margin-bottom: 130px; }
        .marquee-area { padding: 12px 20px; margin-bottom: 24px; }
        .marquee { 
            overflow: hidden; 
            white-space: nowrap; 
            color: #f5c542; 
            font-size: 13px; 
            font-style: italic; 
            text-align: center; 
            text-shadow: 0 0 5px rgba(245,197,66,0.3);
            letter-spacing: 1px;
        }
        .marquee span { display: inline-block; padding-left: 100%; animation: scrollMarquee 22s linear infinite; }
        @keyframes scrollMarquee { 0% { transform: translate(0, 0); } 100% { transform: translate(-100%, 0); } }
        .card {
            background: rgba(20, 28, 45, 0.85);
            backdrop-filter: blur(12px);
            border-radius: 36px;
            padding: 28px 24px;
            border: 1px solid rgba(245, 197, 66, 0.25);
        }
        .form-group { margin-bottom: 16px; }
        label { display: block; margin-bottom: 6px; color: #cfddee; font-size: 12px; }
        input, select {
            width: 100%;
            padding: 10px 16px;
            background: rgba(0,0,0,0.4);
            border: 1px solid #3a4a62;
            border-radius: 40px;
            font-size: 13px;
            color: #f5c542;
        }
        input:focus, select:focus { 
            outline: none; 
            border-color: #f5c542; 
            box-shadow: 0 0 0 2px rgba(245,197,66,0.2); 
        }
        select option, select optgroup { background: #141d2e; color: #f5c542; }
        select option:first-child { background: #2a2f3e !important; color: #8f9bb3 !important; }
        input::placeholder, select::placeholder { color: #8f9bb3; }
        .checkbox-group { display: flex; align-items: flex-start; gap: 12px; margin: 16px 0; }
        .checkbox-group input { width: 18px; height: 18px; margin-top: 2px; flex-shrink: 0; }
        .checkbox-group label { margin-bottom: 0; line-height: 1.5; }
        .checkbox-group label a { color: #f5c542; text-decoration: underline; }
        .btn {
            width: 100%;
            padding: 11px;
            background: #f5c542;
            color: #0a0f1c;
            border: none;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 700;
            cursor: pointer;
            margin-top: 6px;
        }
        .btn-secondary { background: transparent; border: 1.5px solid #f5c542; color: #f5c542; }
        .switch-link { text-align: center; margin-top: 24px; }
        .switch-link a { color: #f5c542; text-decoration: none; font-size: 13px; }
        .error-message, .success-message {
            padding: 10px 16px;
            border-radius: 40px;
            margin-bottom: 20px;
            font-size: 13px;
            display: none;
        }
        .error-message { background: rgba(194,61,43,0.2); color: #ffaea5; }
        .success-message { background: rgba(44,110,44,0.2); color: #b8e4b0; }
        .password-strength { font-size: 11px; margin-top: 6px; color: #aab4c8; }
        .legal-warning { 
            background: rgba(194,61,43,0.15); 
            color: #ffaea5; 
            padding: 10px 16px; 
            border-radius: 40px; 
            font-size: 12px; 
            margin: 16px 0; 
            display: none; 
            text-align: center;
        }
        .modal {
            display: none;
            position: fixed;
            top: 0; left: 0;
            width: 100%; height: 100%;
            background: rgba(0,0,0,0.85);
            backdrop-filter: blur(12px);
            justify-content: center;
            align-items: center;
            z-index: 1000;
        }
        .modal-content {
            background: linear-gradient(145deg, #101b2e, #0a1222);
            border-radius: 40px;
            max-width: 700px;
            width: 90%;
            padding: 32px;
            border: 1px solid rgba(245, 197, 66, 0.4);
            color: #f0ede8;
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.7);
        }
        .modal-content h3 { 
            color: #f5c542; 
            margin-bottom: 20px; 
            display: flex;
            align-items: center;
            gap: 10px;
            border-bottom: 1px solid rgba(245,197,66,0.2);
            padding-bottom: 20px;
        }
        .modal-content h4 { color: #f5c542; font-size: 15px; margin-bottom: 10px; }
        .modal-content p { color: #d8d4cc; font-size: 13px; line-height: 1.7; margin-bottom: 16px; }
        .modal-buttons { display: flex; gap: 12px; justify-content: center; margin-top: 24px; }
        .about-text { font-size: 14px; line-height: 1.8; margin: 20px 0; color: #d8d4cc; }
        .about-text p { margin-bottom: 16px; }
        .about-text .highlight { color: #f5c542; font-weight: 500; }

@keyframes moonGlowFull {
    0% { opacity: 0.1; text-shadow: 0 0 0 #f5c542; }
    50% { opacity: 1; text-shadow: 0 0 30px #f5c542; }
    100% { opacity: 1; text-shadow: 0 0 50px #f5c542; }
}
@keyframes moonGlowSimple {
    0% { opacity: 0.3; text-shadow: 0 0 10px #f5c542; }
    100% { opacity: 1; text-shadow: 0 0 30px #f5c542; }
}
@keyframes lineFadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes splashFadeOut {
    0% { opacity: 1; visibility: visible; }
    99% { opacity: 0; }
    100% { opacity: 0; visibility: hidden; }
}