:root {
    --yesil: #2e7d32;
    --yesil-koyu: #1b5e20;
    --bg: #f6f7f4;
    --metin: #222;
    --hata: #c62828;
    --basari: #2e7d32;
    --border: #ddd;
}

* { box-sizing: border-box; }

body {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: var(--bg);
    color: var(--metin);
    margin: 0;
    line-height: 1.6;
}

.container {
    max-width: 480px;
    margin: 60px auto;
    background: #fff;
    padding: 32px;
    border-radius: 10px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

h1 { font-size: 22px; color: var(--yesil-koyu); margin-top: 0; }

label { display: block; margin: 14px 0 6px; font-weight: 600; font-size: 14px; }

input[type=text], input[type=email], input[type=tel], input[type=password], textarea, select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 15px;
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--yesil);
}

button, .btn {
    display: inline-block;
    background: var(--yesil);
    color: #fff;
    border: none;
    padding: 11px 22px;
    border-radius: 6px;
    font-size: 15px;
    cursor: pointer;
    margin-top: 18px;
    text-decoration: none;
}

button:hover, .btn:hover { background: var(--yesil-koyu); }

.uyari { padding: 12px 14px; border-radius: 6px; margin-bottom: 16px; font-size: 14px; }
.uyari.hata { background: #fdecea; color: var(--hata); border: 1px solid #f5c6cb; }
.uyari.basari { background: #e8f5e9; color: var(--basari); border: 1px solid #c8e6c9; }

.alt-link { margin-top: 16px; font-size: 14px; text-align: center; }
.alt-link a { color: var(--yesil-koyu); }

.video-wrapper { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; margin: 16px 0; }
.video-wrapper iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border-radius: 8px; }