/*** Ortak sayfa düzeni: başlık alanı, içerik kartı, makale tipografisi ***/
:root {
    --bt-navy: #011A41;
    --bt-blue: #355EFC;
    --bt-blue-dark: #2a4dd4;
    --bt-blue-soft: #eaf0ff;
    --bt-text: #1c2536;
    --bt-muted: #5f6b80;
    --bt-line: #e3e8f2;
    --bt-card: #ffffff;
    --bt-surface: #f5f7fc;
    --bt-radius: 18px;
    --bt-shadow: 0 1px 2px rgba(1, 26, 65, 0.06), 0 8px 24px rgba(1, 26, 65, 0.06);
    --bt-shadow-hover: 0 2px 4px rgba(1, 26, 65, 0.08), 0 18px 40px rgba(1, 26, 65, 0.14);
}

.bt-page :focus-visible {
    outline: 3px solid #ffbf00;
    outline-offset: 3px;
}

/* Header sabit olduğu için içerik onun hemen altından başlar */
.bt-page {
    padding-top: var(--bt-header-offset, 135px);
    background: var(--bt-surface);
}

@media (max-width: 991.98px) {
    .bt-page {
        padding-top: var(--bt-header-offset, 68px);
    }
}

/* Başlık alanı */
.bt-page-hero {
    padding: 36px 0 40px;
    background:
        radial-gradient(circle at 85% 0%, rgba(53, 94, 252, 0.10), transparent 45%),
        linear-gradient(180deg, #ffffff 0%, var(--bt-surface) 100%);
    border-bottom: 1px solid var(--bt-line);
}

.bt-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    list-style: none;
    margin: 0 0 18px;
    padding: 0;
    font-size: 0.875rem;
    color: var(--bt-muted);
}

.bt-breadcrumb li {
    min-width: 0;
}

.bt-breadcrumb li + li::before {
    content: "\203A";
    margin-right: 8px;
    color: #9aa4b8;
}

.bt-breadcrumb a {
    color: var(--bt-muted);
    text-decoration: none;
}

.bt-breadcrumb a:hover {
    color: var(--bt-blue);
}

.bt-breadcrumb [aria-current] {
    display: inline-block;
    max-width: 48ch;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    vertical-align: bottom;
    color: var(--bt-navy);
    font-weight: 600;
}

.bt-page-title-row {
    display: flex;
    align-items: center;
    gap: 20px;
}

.bt-page-icon {
    flex: 0 0 64px;
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: var(--bt-navy);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    box-shadow: 0 10px 24px rgba(1, 26, 65, 0.2);
}

.bt-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    background: var(--bt-blue-soft);
    color: var(--bt-blue);
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.bt-section-title {
    margin: 14px 0 8px;
    font-family: "Jost", sans-serif;
    font-size: clamp(1.875rem, 1.3rem + 2vw, 2.75rem);
    font-weight: 700;
    line-height: 1.15;
    color: var(--bt-navy);
}

.bt-page-hero .bt-section-title {
    margin: 0 0 6px;
}

.bt-page-hero--article .bt-section-title {
    font-size: clamp(1.625rem, 1.1rem + 2vw, 2.5rem);
}

.bt-section-lead {
    max-width: 640px;
    margin: 0;
    color: var(--bt-muted);
    font-size: 1rem;
}

.bt-page-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 18px;
    margin-top: 10px;
    color: var(--bt-muted);
    font-size: 0.9375rem;
}

.bt-page-meta span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.bt-page-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    margin: 16px 0 0;
    padding: 0;
}

.bt-page-chips li {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 14px;
    border: 1px solid var(--bt-line);
    border-radius: 999px;
    background: #fff;
    color: var(--bt-navy);
    font-size: 0.875rem;
    font-weight: 600;
}

.bt-page-chips i {
    color: var(--bt-blue);
}

.bt-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 22px;
    border: 0;
    border-radius: 999px;
    background: var(--bt-navy);
    color: #fff;
    font-weight: 600;
    font-size: 0.9375rem;
    text-decoration: none;
    transition: background-color 0.2s ease, gap 0.2s ease;
}

.bt-link-btn:hover,
.bt-link-btn:focus-visible {
    background: var(--bt-blue);
    color: #fff;
    gap: 14px;
}

.bt-link-btn--ghost {
    background: #fff;
    color: var(--bt-navy);
    border: 1px solid var(--bt-line);
}

.bt-link-btn--ghost:hover,
.bt-link-btn--ghost:focus-visible {
    background: var(--bt-blue-soft);
    color: var(--bt-blue);
}

/* İçerik alanı */
.bt-page-body {
    padding-top: 40px;
    padding-bottom: 72px;
}

.bt-article {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bt-card);
    border: 1px solid var(--bt-line);
    border-radius: var(--bt-radius);
    box-shadow: var(--bt-shadow);
    overflow: hidden;
}

.bt-article--wide {
    max-width: none;
}

.bt-article-cover {
    margin: 0;
    background: #eef2f9;
}

.bt-article-cover img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 640px;
    object-fit: contain;
    margin: 0 auto;
}

.bt-article-inner {
    padding: 40px 48px 44px;
}

.bt-article-inner::after {
    content: "";
    display: table;
    clear: both;
}

.bt-article-figure {
    margin: 0 0 24px;
}

.bt-article-figure img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 14px;
}

.bt-article-figure--center {
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.bt-article-figure--left,
.bt-article-figure--right {
    width: min(45%, 360px);
}

.bt-article-figure--left {
    float: left;
    margin-right: 28px;
}

.bt-article-figure--right {
    float: right;
    margin-left: 28px;
}

.bt-article-footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 48px;
    border-top: 1px solid var(--bt-line);
    background: #fafbfe;
}

.bt-share {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    color: var(--bt-muted);
    font-size: 0.875rem;
    font-weight: 600;
}

.bt-share a,
.bt-share button {
    width: 40px;
    height: 40px;
    border: 1px solid var(--bt-line);
    border-radius: 50%;
    background: #fff;
    color: var(--bt-navy);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.bt-share a:hover,
.bt-share button:hover {
    background: var(--bt-navy);
    border-color: var(--bt-navy);
    color: #fff;
}

.bt-share-status {
    min-width: 1px;
    color: #16a34a;
}

/* PDF */
.bt-pdf {
    border: 1px solid var(--bt-line);
    border-radius: 14px;
    overflow: hidden;
    margin-top: 8px;
}

.bt-pdf-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 16px;
    background: #fafbfe;
    border-bottom: 1px solid var(--bt-line);
    font-weight: 600;
    color: var(--bt-navy);
}

.bt-pdf-bar span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.bt-pdf-bar .fa-file-pdf {
    color: #c2410c;
    font-size: 1.25rem;
}

.bt-pdf-actions {
    display: flex;
    gap: 8px;
}

.bt-pdf-actions a {
    padding: 8px 14px;
    font-size: 0.875rem;
}

.bt-pdf iframe {
    display: block;
    width: 100%;
    height: 80vh;
    border: 0;
}

.bt-notice {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 18px 20px;
    border-radius: 14px;
    background: #fff4ed;
    border: 1px solid #fed7aa;
    color: #9a3412;
    font-weight: 600;
}

/* Makale tipografisi (panelden girilen içerik) */
.bt-prose {
    color: var(--bt-text);
    font-size: 1.0625rem;
    line-height: 1.75;
    overflow-wrap: break-word;
}

.bt-prose > :first-child {
    margin-top: 0;
}

.bt-prose > :last-child {
    margin-bottom: 0;
}

.bt-prose p {
    margin: 0 0 1.1em;
}

.bt-prose h1,
.bt-prose h2,
.bt-prose h3,
.bt-prose h4,
.bt-prose h5,
.bt-prose h6 {
    margin: 1.6em 0 0.6em;
    font-family: "Jost", sans-serif;
    font-weight: 700;
    line-height: 1.3;
    color: var(--bt-navy);
}

.bt-prose h1 { font-size: 1.875rem; }
.bt-prose h2 { font-size: 1.625rem; }
.bt-prose h3 { font-size: 1.375rem; }
.bt-prose h4 { font-size: 1.1875rem; }
.bt-prose h5,
.bt-prose h6 { font-size: 1.0625rem; }

.bt-prose a {
    color: var(--bt-blue);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.bt-prose a:hover {
    color: var(--bt-blue-dark);
}

.bt-prose ul,
.bt-prose ol {
    margin: 0 0 1.1em;
    padding-left: 1.4em;
}

.bt-prose li {
    margin-bottom: 0.4em;
}

.bt-prose li::marker {
    color: var(--bt-blue);
}

.bt-prose img {
    max-width: 100%;
    height: auto !important;
    border-radius: 12px;
}

.bt-prose blockquote {
    margin: 1.5em 0;
    padding: 16px 22px;
    border-left: 4px solid var(--bt-blue);
    border-radius: 0 12px 12px 0;
    background: var(--bt-blue-soft);
    color: var(--bt-navy);
}

.bt-prose hr {
    margin: 2em 0;
    border: 0;
    border-top: 1px solid var(--bt-line);
    opacity: 1;
}

.bt-prose iframe,
.bt-prose video {
    max-width: 100%;
    border-radius: 12px;
}

.bt-table-wrap {
    margin: 1.5em 0;
    overflow-x: auto;
    border: 1px solid var(--bt-line);
    border-radius: 14px;
    -webkit-overflow-scrolling: touch;
}

.bt-prose table {
    width: 100% !important;
    min-width: 520px;
    margin: 0;
    border-collapse: collapse;
    background: #fff;
    font-size: 0.9375rem;
    line-height: 1.5;
}

.bt-prose table th,
.bt-prose table thead td {
    padding: 14px 18px;
    background: var(--bt-navy);
    color: #fff;
    font-weight: 600;
    text-align: left;
}

.bt-prose table td {
    padding: 14px 18px;
    border-top: 1px solid var(--bt-line);
    vertical-align: middle;
}

.bt-prose table tbody tr:nth-child(even) td {
    background: #fafbfe;
}

.bt-prose table tbody tr:hover td {
    background: var(--bt-blue-soft);
}

.bt-prose a.bt-download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 999px;
    background: var(--bt-blue);
    color: #fff;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    white-space: nowrap;
    transition: background-color 0.2s ease;
}

.bt-prose a.bt-download:hover {
    background: var(--bt-blue-dark);
    color: #fff;
}

.bt-empty {
    padding: 64px 24px;
    border: 1px dashed #c9d2e6;
    border-radius: var(--bt-radius);
    background: #fff;
    text-align: center;
    color: var(--bt-muted);
}

.bt-empty i {
    font-size: 40px;
    color: #9aa4b8;
    margin-bottom: 12px;
}

.bt-empty p {
    margin-bottom: 20px;
}

@media (max-width: 991.98px) {
    .bt-article-inner {
        padding: 32px 32px 36px;
    }

    .bt-article-footer {
        padding: 18px 32px;
    }
}

@media (max-width: 767.98px) {
    .bt-page-hero {
        padding: 24px 0 28px;
    }

    .bt-page-icon {
        flex-basis: 52px;
        width: 52px;
        height: 52px;
        border-radius: 14px;
        font-size: 21px;
    }

    .bt-page-title-row {
        gap: 14px;
        align-items: flex-start;
    }

    .bt-breadcrumb [aria-current] {
        max-width: 22ch;
    }

    .bt-page-body {
        padding-top: 24px;
        padding-bottom: 48px;
    }

    .bt-article {
        border-radius: 14px;
    }

    .bt-article-inner {
        padding: 22px 20px 26px;
    }

    .bt-article-footer {
        padding: 16px 20px;
    }

    .bt-article-figure--left,
    .bt-article-figure--right {
        float: none;
        width: 100%;
        margin-left: 0;
        margin-right: 0;
    }

    .bt-prose {
        font-size: 1rem;
    }

    .bt-pdf iframe {
        height: 70vh;
    }
}