/* ==========================================================================
   Intelligent Rails — Ghost Theme
   Design system: omarbakri.com
   Palette: #0A0A0A base / #C4A265 accent / Inter typeface
   ========================================================================== */

/* ---------- Reset & Base ---------- */

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

:root {
    --bg: #0A0A0A;
    --surface: #111111;
    --surface-raised: #161616;
    --text-primary: #FAFAFA;
    --text-secondary: #A0A0A0;
    --text-muted: #666666;
    --accent: #C4A265;
    --accent-hover: #D4B275;
    --edge: #1A1A1A;
    --edge-strong: #2A2A2A;

    --font-sans: 'Inter', var(--gh-font-body, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif);
    --font-heading: 'Inter', var(--gh-font-heading, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif);

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.75rem;

    --container: 1200px;
    --container-narrow: 720px;
    --spacing: 8px;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background: var(--bg);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.7;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ---------- Layout ---------- */

.ir-container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

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

.ir-main {
    min-height: 60vh;
}

/* ---------- Header ---------- */

.ir-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--edge);
}

.ir-header-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
}

.ir-header-logo {
    display: flex;
    align-items: center;
    min-height: 44px;
    min-width: 44px;
    justify-content: center;
}

.ir-header-title {
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 300;
    letter-spacing: -0.02em;
}

.ir-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.ir-nav-link {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    letter-spacing: 0.02em;
    min-height: 44px;
    display: flex;
    align-items: center;
    transition: color 0.2s ease;
}

.ir-nav-link:hover,
.ir-nav-link--active {
    color: var(--text-primary);
}

.ir-header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ---------- Buttons ---------- */

.ir-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 20px;
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 500;
    letter-spacing: 0.02em;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 44px;
}

.ir-btn--outline {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
}

.ir-btn--outline:hover {
    background: var(--accent);
    color: var(--bg);
}

.ir-btn--ghost {
    background: transparent;
    color: var(--text-secondary);
}

.ir-btn--ghost:hover {
    color: var(--text-primary);
}

/* ---------- Hero (Home) ---------- */

.ir-hero {
    padding: 120px 0 80px;
    text-align: center;
}

.ir-hero-title {
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 300;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}

.ir-hero-description {
    color: var(--text-secondary);
    font-size: var(--text-lg);
    font-weight: 300;
    max-width: 560px;
    margin: 0 auto 40px;
}

.ir-hero-subscribe {
    display: flex;
    gap: 12px;
    max-width: 420px;
    margin: 0 auto;
}

.ir-hero-subscribe input[type="email"] {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg);
    border: 1px solid var(--edge);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    outline: none;
    transition: border-color 0.2s ease;
}

.ir-hero-subscribe input[type="email"]::placeholder {
    color: var(--text-muted);
}

.ir-hero-subscribe input[type="email"]:focus {
    border-color: var(--accent);
}

.ir-hero-subscribe button {
    padding: 12px 24px;
    background: var(--accent);
    color: var(--bg);
    border: none;
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease;
}

.ir-hero-subscribe button:hover {
    background: var(--accent-hover);
}

/* ---------- Post Feed (Grid) ---------- */

.ir-post-feed {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 32px;
    padding: 48px 0 80px;
}

/* ---------- Post Card ---------- */

.ir-card {
    background: var(--surface);
    border: 1px solid var(--edge);
    transition: border-color 0.2s ease;
}

.ir-card:hover {
    border-color: var(--edge-strong);
}

.ir-card-image {
    display: block;
    overflow: hidden;
    aspect-ratio: 16 / 9;
}

.ir-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.ir-card:hover .ir-card-image img {
    transform: scale(1.02);
}

.ir-card-content {
    padding: 24px;
}

.ir-card-tag {
    display: inline-block;
    color: var(--accent);
    font-size: var(--text-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.ir-card-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 300;
    letter-spacing: -0.02em;
    line-height: 1.3;
    margin-bottom: 8px;
}

.ir-card-title a {
    color: var(--text-primary);
}

.ir-card-title a:hover {
    color: var(--accent);
}

.ir-card-excerpt {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: 1.6;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ir-card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: var(--text-xs);
    letter-spacing: 0.03em;
}

.ir-card-meta-sep {
    color: var(--edge-strong);
}

.ir-card-featured {
    display: inline-block;
    padding: 2px 8px;
    border: 1px solid var(--accent);
    color: var(--accent);
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-left: auto;
}

/* ---------- Article (Single Post) ---------- */

.ir-article-header {
    padding: 80px 0 40px;
    text-align: center;
}

.ir-article-tag {
    display: inline-block;
    color: var(--accent);
    font-size: var(--text-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.ir-article-title {
    font-family: var(--font-heading);
    font-size: var(--text-4xl);
    font-weight: 300;
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin-bottom: 16px;
}

.ir-article-excerpt {
    color: var(--text-secondary);
    font-size: var(--text-lg);
    font-weight: 300;
    max-width: 560px;
    margin: 0 auto 16px;
}

.ir-article-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: var(--text-xs);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.ir-article-meta-sep {
    color: var(--edge-strong);
}

.ir-article-image {
    max-width: 1000px;
    margin: 0 auto 48px;
    padding: 0 24px;
}

.ir-article-image figcaption {
    color: var(--text-muted);
    font-size: var(--text-xs);
    text-align: center;
    margin-top: 12px;
}

/* ---------- Article Body (Ghost Content) ---------- */

.ir-article-body {
    font-size: var(--text-base);
    line-height: 1.8;
    padding-bottom: 48px;
}

.ir-article-body h2 {
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    font-weight: 300;
    letter-spacing: -0.02em;
    margin: 48px 0 16px;
}

.ir-article-body h3 {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 400;
    letter-spacing: -0.01em;
    margin: 40px 0 12px;
}

.ir-article-body h4 {
    font-family: var(--font-heading);
    font-size: var(--text-lg);
    font-weight: 500;
    margin: 32px 0 8px;
}

.ir-article-body p {
    margin-bottom: 24px;
}

.ir-article-body a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.ir-article-body blockquote {
    border-left: 2px solid var(--accent);
    padding: 4px 0 4px 24px;
    margin: 32px 0;
}

.ir-article-body blockquote p {
    color: var(--text-secondary);
    font-style: italic;
}

.ir-article-body ul,
.ir-article-body ol {
    padding-left: 24px;
    margin-bottom: 24px;
}

.ir-article-body li {
    margin-bottom: 8px;
}

.ir-article-body hr {
    border: none;
    border-top: 1px solid var(--edge);
    margin: 48px 0;
}

.ir-article-body code {
    background: var(--surface);
    color: var(--accent);
    font-family: 'SF Mono', Monaco, Consolas, 'Liberation Mono', monospace;
    font-size: 0.875em;
    padding: 2px 6px;
    border-radius: 2px;
}

.ir-article-body pre {
    background: var(--surface);
    border: 1px solid var(--edge);
    border-radius: 2px;
    padding: 20px;
    margin: 32px 0;
    overflow-x: auto;
}

.ir-article-body pre code {
    background: none;
    padding: 0;
    font-size: var(--text-sm);
    line-height: 1.6;
}

.ir-article-body figure {
    margin: 32px 0;
}

.ir-article-body figcaption {
    color: var(--text-muted);
    font-size: var(--text-xs);
    text-align: center;
    margin-top: 12px;
}

/* Ghost card styles */
.ir-article-body .kg-card {
    margin: 32px 0;
}

.ir-article-body .kg-image-card img,
.ir-article-body .kg-gallery-image img {
    border-radius: 2px;
}

.ir-article-body .kg-width-wide {
    margin-left: -80px;
    margin-right: -80px;
    max-width: calc(var(--container-narrow) + 160px);
}

.ir-article-body .kg-width-full {
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    max-width: 100vw;
    width: 100vw;
}

.ir-article-body .kg-bookmark-card {
    border: 1px solid var(--edge);
    background: var(--surface);
}

.ir-article-body .kg-bookmark-container {
    display: flex;
    text-decoration: none;
    color: var(--text-primary);
}

.ir-article-body .kg-bookmark-content {
    flex: 1;
    padding: 20px;
}

.ir-article-body .kg-bookmark-title {
    font-weight: 400;
    font-size: var(--text-base);
    margin-bottom: 8px;
}

.ir-article-body .kg-bookmark-description {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ir-article-body .kg-bookmark-metadata {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    color: var(--text-muted);
    font-size: var(--text-xs);
}

.ir-article-body .kg-bookmark-icon {
    width: 16px;
    height: 16px;
}

.ir-article-body .kg-bookmark-thumbnail {
    width: 200px;
    min-height: 100%;
}

.ir-article-body .kg-bookmark-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ---------- Article Footer ---------- */

.ir-article-footer {
    border-top: 1px solid var(--edge);
    padding-top: 32px;
    padding-bottom: 80px;
}

.ir-article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 48px;
}

.ir-tag {
    display: inline-block;
    padding: 4px 12px;
    border: 1px solid var(--edge);
    color: var(--text-secondary);
    font-size: var(--text-xs);
    letter-spacing: 0.03em;
    transition: all 0.2s ease;
}

.ir-tag:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ---------- Article CTA ---------- */

.ir-article-cta {
    background: var(--surface);
    border: 1px solid var(--edge);
    padding: 40px;
    text-align: center;
    margin: 48px 0;
}

.ir-article-cta h3 {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    font-weight: 300;
    margin-bottom: 8px;
}

.ir-article-cta p {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    margin-bottom: 24px;
}

.ir-cta-form {
    display: flex;
    gap: 12px;
    max-width: 400px;
    margin: 0 auto;
}

.ir-cta-form input[type="email"] {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg);
    border: 1px solid var(--edge);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    outline: none;
    transition: border-color 0.2s ease;
}

.ir-cta-form input[type="email"]:focus {
    border-color: var(--accent);
}

.ir-cta-form input[type="email"]::placeholder {
    color: var(--text-muted);
}

.ir-cta-form button {
    padding: 12px 24px;
    background: var(--accent);
    color: var(--bg);
    border: none;
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease;
}

.ir-cta-form button:hover {
    background: var(--accent-hover);
}

/* ---------- Form Messages ---------- */

.ir-form-message {
    font-size: var(--text-sm);
    margin-top: 8px;
    display: none;
}

.ir-form-success {
    color: #4ade80;
}

.ir-form-error {
    color: #f87171;
}

/* ---------- Archive Headers ---------- */

.ir-archive-header {
    padding: 80px 0 16px;
    text-align: center;
}

.ir-archive-label {
    color: var(--accent);
    font-size: var(--text-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.ir-archive-title {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 300;
    letter-spacing: -0.02em;
}

.ir-archive-description {
    color: var(--text-secondary);
    font-size: var(--text-base);
    max-width: 480px;
    margin: 12px auto 0;
}

.ir-author-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin: 0 auto 16px;
    object-fit: cover;
}

/* ---------- Page ---------- */

.ir-page-header {
    padding: 80px 0 40px;
}

.ir-page-title {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 300;
    letter-spacing: -0.02em;
}

/* ---------- Pagination ---------- */

.ir-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 0 0 80px;
    color: var(--text-muted);
    font-size: var(--text-sm);
}

.ir-pagination-link {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    min-height: 44px;
    display: flex;
    align-items: center;
}

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

/* ---------- Error Page ---------- */

.ir-error {
    text-align: center;
    padding: 120px 0;
}

.ir-error-code {
    color: var(--accent);
    font-size: var(--text-xs);
    font-weight: 500;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}

.ir-error-title {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 300;
    margin-bottom: 32px;
}

/* ---------- Footer ---------- */

.ir-footer {
    border-top: 1px solid var(--edge);
}

.ir-footer-inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 48px 24px;
}

.ir-footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 32px;
    margin-bottom: 32px;
}

.ir-footer-logo {
    display: inline-flex;
    margin-bottom: 12px;
}

.ir-footer-tagline {
    color: var(--text-muted);
    font-size: var(--text-sm);
}

.ir-footer-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 16px 24px;
}

.ir-footer-link {
    color: var(--text-muted);
    font-size: var(--text-sm);
    transition: color 0.2s ease;
}

.ir-footer-link:hover {
    color: var(--text-secondary);
}

.ir-footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--edge);
    color: var(--text-muted);
    font-size: var(--text-xs);
}

.ir-footer-bottom a {
    color: var(--text-muted);
}

.ir-footer-bottom a:hover {
    color: var(--text-secondary);
}

/* ---------- Comments ---------- */

.ir-comments {
    margin-top: 48px;
}

/* ---------- Responsive ---------- */

@media (max-width: 768px) {
    .ir-hero {
        padding: 80px 0 60px;
    }

    .ir-hero-title {
        font-size: var(--text-3xl);
    }

    .ir-article-title {
        font-size: var(--text-3xl);
    }

    .ir-hero-subscribe {
        flex-direction: column;
    }

    .ir-cta-form {
        flex-direction: column;
    }

    .ir-post-feed {
        grid-template-columns: 1fr;
    }

    .ir-footer-top {
        flex-direction: column;
    }

    .ir-footer-bottom {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }

    .ir-article-body .kg-width-wide {
        margin-left: -24px;
        margin-right: -24px;
    }

    .ir-nav {
        display: none;
    }

    .ir-article-cta {
        padding: 24px;
    }
}

/* ---------- Reduced Motion ---------- */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ---------- Selection ---------- */

::selection {
    background: var(--accent);
    color: var(--bg);
}