/* =========================================================
   1. Reset + base
   ========================================================= */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
}

img, video {
    max-width: 100%;
    display: block;
}

/* =========================================================
   2. Design tokens
   ========================================================= */

:root {
    --color-bg:        #f6f5f1;
    --color-surface:   #ffffff;
    --color-text:      #1a1917;
    --color-muted:     #78716c;
    --color-border:    #e6e3dc;
    --color-accent:    #2563eb;
    --color-accent-hv: #1d4ed8;
    --color-danger:    #dc2626;

    --color-success-bg:     #f0fdf4;
    --color-success-border: #bbf7d0;
    --color-success-text:   #166534;
    --color-error-bg:       #fef2f2;
    --color-error-border:   #fecaca;
    --color-error-text:     #991b1b;

    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;

    --max-width:        720px;
    --max-width-narrow: 460px;

    --radius:    10px;
    --radius-sm: 6px;
    --radius-xs: 4px;

    --shadow-xs: 0 1px 2px rgba(0,0,0,.04);
    --shadow-sm: 0 1px 3px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.04);
    --shadow:    0 4px 12px rgba(0,0,0,.07), 0 1px 3px rgba(0,0,0,.05);
    --shadow-md: 0 8px 24px rgba(0,0,0,.09), 0 2px 6px rgba(0,0,0,.05);

    --transition: 0.18s ease;
}

/* =========================================================
   3. Body + typography
   ========================================================= */

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    animation: fadeIn 0.35s ease both;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

h1, h2, h3, h4 {
    line-height: 1.2;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover { text-decoration: underline; }

/* =========================================================
   4. Layout
   ========================================================= */

.site-wrapper {
    flex: 1;
    padding: 4rem 1.5rem;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
}

.container-narrow {
    max-width: var(--max-width-narrow);
}

.site-footer {
    text-align: center;
    padding: 2rem 1.5rem;
    font-size: 0.8125rem;
    color: var(--color-muted);
    letter-spacing: 0.01em;
}

/* =========================================================
   5. Landing page
   ========================================================= */

.profile {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.5rem 0 2rem;
}

.avatar {
    width: 84px;
    height: 84px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1.5rem;
    box-shadow:
        0 0 0 3px var(--color-surface),
        0 0 0 5px var(--color-border),
        var(--shadow);
    transition: box-shadow var(--transition);
}

.avatar:hover {
    box-shadow:
        0 0 0 3px var(--color-surface),
        0 0 0 5px var(--color-text),
        var(--shadow-md);
}

.profile-name {
    font-size: 1.625rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 0.5rem;
}

.profile-bio {
    color: var(--color-muted);
    font-size: 0.9375rem;
    max-width: 32ch;
    line-height: 1.55;
}

/* Link stack */
.link-stack {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 2.25rem;
}

.link-btn {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.9rem 1.25rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    color: var(--color-text);
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    box-shadow: var(--shadow-xs);
    transition:
        border-color var(--transition),
        box-shadow var(--transition),
        transform var(--transition),
        background var(--transition);
    will-change: transform;
}

.link-btn:hover {
    border-color: var(--color-text);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
    text-decoration: none;
}

.link-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-xs);
}

.link-btn-accent {
    background: var(--color-text);
    color: var(--color-bg);
    border-color: var(--color-text);
}

.link-btn-accent:hover {
    background: #2c2b27;
    border-color: #2c2b27;
    color: var(--color-bg);
}

.link-icon {
    width: 17px;
    height: 17px;
    flex-shrink: 0;
    opacity: 0.85;
}

/* Recent writing */
.recent-section {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.recent-title {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: 1.125rem;
}

.recent-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.recent-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0.625rem 0;
    border-bottom: 1px solid var(--color-border);
}

.recent-item:last-child { border-bottom: none; }

.recent-link {
    color: var(--color-text);
    font-size: 0.9rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: color var(--transition);
}

.recent-link:hover {
    color: var(--color-accent);
    text-decoration: none;
}

.recent-date {
    font-size: 0.8rem;
    color: var(--color-muted);
    white-space: nowrap;
    flex-shrink: 0;
    font-variant-numeric: tabular-nums;
}

/* =========================================================
   6. Blog list
   ========================================================= */

.page-header {
    padding-bottom: 2rem;
    margin-bottom: 0.5rem;
}

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
}

/* Page back link — blog & article top nav */
.page-back {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--color-muted);
    text-decoration: none;
    margin-bottom: 1.25rem;
    transition: color var(--transition), letter-spacing var(--transition);
}

.page-back:hover {
    color: var(--color-text);
    letter-spacing: 0.1em;
    text-decoration: none;
}

/* Article end — bottom nav */
.article-end {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.article-end-back {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text);
    text-decoration: none;
    transition: gap var(--transition);
}

.article-end-back:hover {
    gap: 1.25rem;
    text-decoration: none;
}

.article-end-arrow {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    flex-shrink: 0;
    box-shadow: var(--shadow-xs);
    transition:
        background var(--transition),
        border-color var(--transition),
        color var(--transition),
        transform var(--transition);
}

.article-end-back:hover .article-end-arrow {
    background: var(--color-text);
    border-color: var(--color-text);
    color: var(--color-bg);
    transform: translateX(-3px);
}

.article-list { display: flex; flex-direction: column; }

.article-card {
    padding: 1.75rem 0;
    border-bottom: 1px solid var(--color-border);
    position: relative;
}

.article-card:first-child { border-top: 1px solid var(--color-border); }

.article-card-link {
    display: block;
    color: inherit;
    text-decoration: none;
}

.article-card-title {
    font-size: 1.0625rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    transition: color var(--transition);
    display: inline-block;
    background-image: linear-gradient(var(--color-accent), var(--color-accent));
    background-size: 0% 1px;
    background-repeat: no-repeat;
    background-position: left bottom;
    transition: color var(--transition), background-size var(--transition);
}

.article-card-link:hover .article-card-title {
    color: var(--color-accent);
    background-size: 100% 1px;
}

.article-card-excerpt {
    font-size: 0.9rem;
    color: var(--color-muted);
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--color-muted);
    font-variant-numeric: tabular-nums;
}

.article-meta span { opacity: 0.5; }

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
}

.pagination-info {
    font-size: 0.8125rem;
    color: var(--color-muted);
}

.pagination-btn {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text);
    padding: 0.4rem 0.875rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    box-shadow: var(--shadow-xs);
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
    text-decoration: none;
}

.pagination-btn:hover {
    border-color: var(--color-text);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
    text-decoration: none;
}

/* =========================================================
   7. Single article
   ========================================================= */

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--color-muted);
    margin-bottom: 2.5rem;
}

.breadcrumb a {
    color: var(--color-muted);
    transition: color var(--transition);
}

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

.article-single-header { margin-bottom: 3rem; }

.article-single-header h1 {
    font-size: 2.125rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: 1rem;
}


/* =========================================================
   8. Prose
   ========================================================= */

.prose {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: #2d2b27;
    max-width: 66ch;
}

.prose > * + * { margin-top: 1.375em; }

.prose h2 {
    font-size: 1.375rem;
    margin-top: 2.75em;
    margin-bottom: -0.25em;
    letter-spacing: -0.025em;
}

.prose h3 {
    font-size: 1.125rem;
    margin-top: 2em;
    margin-bottom: -0.5em;
}

.prose a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 2px;
    text-decoration-thickness: 1px;
}

.prose a:hover { color: var(--color-accent-hv); }

.prose ul,
.prose ol {
    padding-left: 1.625rem;
}

.prose li + li { margin-top: 0.3em; }

.prose blockquote {
    margin: 2em 0;
    padding: 0.1em 1.5em;
    border-left: 2px solid var(--color-text);
    color: var(--color-muted);
    font-style: italic;
    font-size: 1.075em;
}

.prose code {
    font-family: 'Menlo', 'Monaco', 'Consolas', monospace;
    font-size: 0.875em;
    background: #eeece6;
    padding: 0.15em 0.4em;
    border-radius: 3px;
    color: #c2410c;
}

.prose pre {
    background: #1e1d1a;
    color: #d4d0c8;
    padding: 1.375rem 1.5rem;
    border-radius: var(--radius);
    overflow-x: auto;
    box-shadow: var(--shadow-sm);
}

.prose pre code {
    background: transparent;
    padding: 0;
    font-size: 0.875rem;
    color: inherit;
}

.prose img {
    border-radius: var(--radius-sm);
    margin: 2em auto;
    box-shadow: var(--shadow);
}

.prose hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 3em 0;
}

/* =========================================================
   9. Shared UI — buttons, forms, alerts
   ========================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1.125rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--font-sans);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    transition:
        background var(--transition),
        border-color var(--transition),
        box-shadow var(--transition),
        transform var(--transition),
        color var(--transition);
    line-height: 1.4;
    white-space: nowrap;
    will-change: transform;
}

.btn:hover { text-decoration: none; }

.btn-primary {
    background: var(--color-text);
    color: #f6f5f1;
    border-color: var(--color-text);
    box-shadow: var(--shadow-xs);
}

.btn-primary:hover {
    background: #2c2b27;
    border-color: #2c2b27;
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
    color: #f6f5f1;
}

.btn-ghost {
    background: transparent;
    color: var(--color-muted);
    border-color: var(--color-border);
}

.btn-ghost:hover {
    color: var(--color-text);
    border-color: var(--color-text);
    background: var(--color-surface);
}

.btn-danger {
    background: transparent;
    color: var(--color-danger);
    border-color: var(--color-border);
}

.btn-danger:hover {
    background: var(--color-danger);
    color: white;
    border-color: var(--color-danger);
}

.btn-full  { width: 100%; justify-content: center; padding-top: 0.625rem; padding-bottom: 0.625rem; }
.btn-sm    { padding: 0.375rem 0.75rem; font-size: 0.8125rem; }
.btn-xs    { padding: 0.25rem 0.625rem; font-size: 0.75rem; }

/* Forms */
.form-group { margin-bottom: 1.25rem; }

.form-group-inline {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.4rem;
    color: var(--color-text);
}

.form-label-hint {
    font-weight: 400;
    color: var(--color-muted);
    font-size: 0.8125rem;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 0.55rem 0.875rem;
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-text);
    transition: border-color var(--transition), box-shadow var(--transition);
    appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-text);
    box-shadow: 0 0 0 3px rgba(26,25,23,0.08);
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
    line-height: 1.6;
}

.form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2378716c' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.25rem;
    cursor: pointer;
}

/* Alerts */
.alert {
    padding: 0.8rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    margin-bottom: 1.25rem;
    border: 1px solid;
}

.alert p + p { margin-top: 0.25rem; }
.alert p:last-child { margin-bottom: 0; }

.alert-error {
    background: var(--color-error-bg);
    border-color: var(--color-error-border);
    color: var(--color-error-text);
}

.alert-success {
    background: var(--color-success-bg);
    border-color: var(--color-success-border);
    color: var(--color-success-text);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2em 0.65em;
    border-radius: 999px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.badge-draft {
    background: #f0ede6;
    color: var(--color-muted);
}

.badge-published {
    background: var(--color-success-bg);
    color: var(--color-success-text);
    border: 1px solid var(--color-success-border);
}

/* =========================================================
   10. Admin — layout
   ========================================================= */

.admin-body {
    background: #efede8;
    min-height: 100vh;
    animation: none;
}

.admin-layout {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.admin-header {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0 1.5rem;
    height: 52px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
}

.admin-header-title {
    font-weight: 600;
    font-size: 0.875rem;
    flex: 1;
    color: var(--color-text);
}

.admin-back {
    font-size: 0.8125rem;
    color: var(--color-muted);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    transition: color var(--transition);
}

.admin-back:hover {
    color: var(--color-text);
    text-decoration: none;
}

.admin-header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.admin-main {
    flex: 1;
    padding: 2rem 1.5rem;
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
}

.admin-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.admin-section-title {
    font-size: 1rem;
    font-weight: 600;
}

/* Admin table */
.admin-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    font-size: 0.875rem;
    border: 1px solid var(--color-border);
}

.admin-table th {
    text-align: left;
    padding: 0.7rem 1rem;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--color-muted);
    background: #faf9f6;
    border-bottom: 1px solid var(--color-border);
}

.admin-table td {
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.admin-table tr:last-child td { border-bottom: none; }

.admin-table tbody tr {
    transition: background var(--transition);
}

.admin-table tbody tr:hover td { background: #fdfcf9; }

.td-title  { max-width: 300px; }

.td-meta {
    color: var(--color-muted);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
    font-size: 0.8125rem;
}

.td-actions {
    display: flex;
    gap: 0.375rem;
    justify-content: flex-end;
    align-items: center;
    white-space: nowrap;
}

.article-link {
    color: var(--color-text);
    font-weight: 500;
    text-decoration: none;
    transition: color var(--transition);
}

.article-link:hover { color: var(--color-accent); }

.empty-state {
    background: var(--color-surface);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius);
    padding: 3.5rem 2rem;
    text-align: center;
    color: var(--color-muted);
    font-size: 0.9375rem;
}

/* Admin editor */
.admin-editor-main { max-width: 760px; }

.editor-top {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.editor-title-group {
    flex: 1;
    min-width: 0;
    margin-bottom: 0;
}

.editor-title-input {
    font-size: 1.0625rem;
    font-weight: 600;
}

.editor-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.editor-quill-wrap {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: 1.25rem;
    box-shadow: var(--shadow-xs);
    transition: box-shadow var(--transition);
}

.editor-quill-wrap:focus-within {
    box-shadow: 0 0 0 3px rgba(26,25,23,0.07), var(--shadow-sm);
    border-color: #c8c4bc;
}

.editor-quill-wrap .ql-toolbar {
    border: none;
    border-bottom: 1px solid var(--color-border);
    background: #faf9f6;
}

.editor-quill-wrap .ql-container {
    border: none;
    font-family: var(--font-sans);
    font-size: 1rem;
}

.editor-quill-wrap .ql-editor {
    min-height: 420px;
    padding: 1.375rem 1.5rem;
    line-height: 1.8;
}

.editor-excerpt-group { margin-top: 0.25rem; }

/* Admin login */
.login-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.25rem;
}

.login-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2.5rem 2rem;
    width: 100%;
    max-width: 360px;
    box-shadow: var(--shadow-md);
}

.login-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

/* =========================================================
   11. 404
   ========================================================= */

.not-found {
    padding: 5rem 0;
    text-align: center;
}

.not-found-code {
    font-size: 5rem;
    font-weight: 800;
    color: var(--color-border);
    line-height: 1;
    margin-bottom: 0.5rem;
    letter-spacing: -0.04em;
}

.not-found h1 {
    font-size: 1.375rem;
    margin-bottom: 0.5rem;
}

/* =========================================================
   12. Utilities
   ========================================================= */

.text-muted { color: var(--color-muted); }

.visually-hidden {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0,0,0,0);
    white-space: nowrap; border-width: 0;
}

/* =========================================================
   13. Responsive
   ========================================================= */

@media (max-width: 600px) {
    .site-wrapper { padding: 2.5rem 1.25rem; }

    .article-single-header h1 { font-size: 1.625rem; }

    .admin-table th:nth-child(3),
    .admin-table td:nth-child(3),
    .admin-table th:nth-child(4),
    .admin-table td:nth-child(4) {
        display: none;
    }

    .editor-top { flex-direction: column; }
    .editor-title-group { width: 100%; }
}