:root {
    --bp-navy: #0e0091;
    --bp-blue: #48c7ff;
}

body {
    background: linear-gradient(180deg, #f2f5ff 0%, #f7f9fc 320px);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    color: #222;
}

.site-header {
    background: #fff;
    border-bottom: 1px solid #e7eaf3;
    padding: 14px 0;
}

.form-card {
    border: 0;
    border-radius: 14px;
    box-shadow: 0 8px 30px rgba(14, 0, 145, .07);
    border-top: 4px solid var(--bp-blue);
}

.form-label {
    font-weight: 600;
    font-size: .9rem;
    margin-bottom: .3rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--bp-blue);
    box-shadow: 0 0 0 .2rem rgba(72, 199, 255, .25);
}

.lang-switch .btn {
    padding: 0 .55rem;
    font-size: .75rem;
}

.btn-brand {
    background: var(--bp-navy);
    border-color: var(--bp-navy);
    color: #fff;
    font-weight: 600;
}

.btn-brand:hover,
.btn-brand:focus {
    background: #1a10b8;
    border-color: #1a10b8;
    color: #fff;
}

.mail-window {
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 8px 30px rgba(14, 0, 145, .07);
    overflow: hidden;
}

.mail-toolbar {
    background: #f3f4f8;
    padding: 10px 16px;
    display: flex;
    align-items: center;
    border-bottom: 1px solid #e7eaf3;
}

.mail-toolbar .dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background: #d5d8e2;
    margin-right: 6px;
}

.mail-meta {
    padding: 8px 20px;
    border-bottom: 1px solid #eef0f5;
    font-size: .875rem;
}

.mail-meta div {
    padding: 4px 0;
}

.mail-meta span {
    display: inline-block;
    width: 52px;
    color: #8a8fa3;
}

.mail-body {
    padding: 20px;
    font-family: Calibri, Arial, sans-serif;
    font-size: 15px;
    min-height: 320px;
}

.signature-preview {
    margin-top: 28px;
    overflow-x: auto;
}

/* Bootstrap'in tablo/görsel stilleri önizlemede imzayı bozmasın */
.signature-preview img {
    vertical-align: top;
    max-width: none;
}

.signature-preview table {
    border-collapse: collapse;
}