:root {
    --bg: #f4f5f7;
    --card-bg: #ffffff;
    --text: #1c1e21;
    --muted: #6b7280;
    --primary: #b8202e; /* Ziraat kırmızısına yakın, ama bağımsız bir marka rengi */
    --primary-dark: #8f1823;
    --border: #e2e4e8;
    --success-bg: #e7f7ee;
    --success-text: #146c43;
    --error-bg: #fdecea;
    --error-text: #a12622;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    width: 100%;
    max-width: 440px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

h1 {
    font-size: 20px;
    margin: 0 0 4px;
}

.subtitle {
    color: var(--muted);
    font-size: 14px;
    margin: 0 0 24px;
}

label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
    margin-top: 16px;
}

input[type="text"],
input[type="password"],
input[type="number"],
select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 15px;
    background: #fff;
    color: var(--text);
}

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

button {
    width: 100%;
    margin-top: 24px;
    padding: 12px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
}

button:hover { background: var(--primary-dark); }

.error {
    background: var(--error-bg);
    color: var(--error-text);
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 8px;
}

.success {
    background: var(--success-bg);
    color: var(--success-text);
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 8px;
}

.link-box {
    display: flex;
    gap: 8px;
    margin-top: 12px;
}

.link-box input {
    flex: 1;
    font-size: 13px;
}

.link-box button {
    width: auto;
    margin-top: 0;
    padding: 10px 16px;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.top-bar a {
    font-size: 13px;
    color: var(--muted);
    text-decoration: none;
}

.top-bar a:hover { color: var(--primary); }

details {
    margin-top: 20px;
    font-size: 12px;
    color: var(--muted);
}

details pre {
    white-space: pre-wrap;
    word-break: break-all;
    background: #fafafa;
    border: 1px solid var(--border);
    padding: 10px;
    border-radius: 6px;
}

.secondary-btn {
    background: #fff;
    color: var(--text);
    border: 1px solid var(--border);
    margin-top: 12px;
}
.secondary-btn:hover { background: #f2f2f2; }