/* ============================================================
   hw9.css — สไตล์เพิ่มเติมสำหรับ Guestbook / Contact / About
   ต่อยอดจาก css/style.css (ใช้ตัวแปรสีชุดเดิม: --primary teal, --accent rust)
   ============================================================ */

.server-info,
.server-info-line,
.server-greeting {
    background: var(--surface, #fff);
    border: 1px solid var(--border, #e1e5ea);
    border-radius: var(--radius, 10px);
    padding: 12px 16px;
    margin: 16px 0 24px;
    font-family: var(--font-mono, monospace);
    font-size: 0.92rem;
    color: var(--text, #1b2430);
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
}

.page-lead {
    color: #55606b;
    margin-bottom: 8px;
}

/* ---- กล่องแจ้งเตือนสถานะ (ใช้ทั้ง Guestbook และ Contact) ---- */
.gb-alert {
    padding: 12px 16px;
    border-radius: var(--radius, 10px);
    margin-bottom: 20px;
    font-weight: 500;
}

.gb-alert--success {
    background: #e5f3ee;
    border: 1px solid var(--primary, #2f6f5e);
    color: var(--primary, #2f6f5e);
}

.gb-alert--error {
    background: #fbeae3;
    border: 1px solid var(--accent, #b65c34);
    color: var(--accent, #b65c34);
}

/* ---- ฟอร์ม Guestbook ---- */
.gb-form-section,
.gb-list-section {
    margin-bottom: 32px;
}

.gb-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-width: 560px;
}

.gb-form .field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.gb-form label,
.form-grid label {
    font-weight: 600;
    font-family: var(--font-display, inherit);
}

.gb-form input,
.gb-form textarea,
.form-grid input,
.form-grid textarea {
    padding: 10px 12px;
    border: 1px solid var(--border, #e1e5ea);
    border-radius: 8px;
    font-family: var(--font-body, inherit);
    font-size: 1rem;
}

.gb-form input:focus,
.gb-form textarea:focus,
.form-grid input:focus,
.form-grid textarea:focus {
    outline: none;
    border-color: var(--primary, #2f6f5e);
    box-shadow: 0 0 0 3px rgba(47, 111, 94, 0.15);
}

/* ---- รายการข้อความ Guestbook ---- */
.gb-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.gb-entry {
    background: var(--surface, #fff);
    border: 1px solid var(--border, #e1e5ea);
    border-radius: var(--radius, 10px);
    padding: 14px 16px;
    box-shadow: var(--shadow-card, 0 1px 2px rgba(27,36,48,0.04));
}

.gb-entry__head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
    flex-wrap: wrap;
    gap: 6px;
}

.gb-entry__name {
    font-weight: 600;
    color: var(--primary, #2f6f5e);
}

.gb-entry__time {
    font-size: 0.82rem;
    color: #8a94a0;
    font-family: var(--font-mono, monospace);
}

.gb-entry__message {
    margin: 0;
    line-height: 1.5;
}

.gb-entry__delete-form {
    margin: 10px 0 0;
    text-align: right;
}

/* ---- กล่องข้อมูลเพิ่มเติมในหน้า About (show/hide ด้วย JS) ---- */
.about-extra {
    margin-top: 18px;
    padding: 16px;
    border-left: 3px solid var(--primary, #2f6f5e);
    background: #f9faf9;
    border-radius: 0 8px 8px 0;
}

.about-extra h3 {
    margin-top: 0;
    color: var(--primary, #2f6f5e);
}

/* ---- active nav link ---- */
.nav-links a.active {
    color: var(--primary, #2f6f5e);
    font-weight: 700;
    border-bottom: 2px solid var(--primary, #2f6f5e);
}

/* ---- fallback hint style เมื่อใช้ .hint นอกบริบท .field ---- */
.hint{
    font-size: .85rem;
    color: var(--text-muted, #6B7480);
}

.server-info-line .hint{
    display: block;
    font-size: .78rem;
    color: var(--text-muted, #6B7480);
    margin-top: 4px;
    font-family: var(--font-body, inherit);
}