/* =========================================================================
   The LLM Registry - Ultra Premium Editorial CSS
   ========================================================================= */

:root {
    /* Colors - Stark Monochrome */
    --black: #050505;
    --white: #ffffff;
    --gray-100: #f8f8f8;
    --gray-200: #eaeaea;
    --gray-300: #cccccc;
    --gray-600: #666666;
    --gray-800: #333333;

    /* Typographic Scale */
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'Menlo', 'Monaco', 'Courier New', monospace;

    /* Metrics */
    --max-width: 1100px;
    --border-thin: 1px solid var(--gray-300);
}

/* --- Resets --- */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    background-color: var(--white);
    color: var(--black);
    font-family: var(--font-sans);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Typography --- */
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: normal; color: var(--black); }
a { color: var(--black); text-decoration: none; transition: opacity 0.2s; }
a:hover { opacity: 0.6; }
ul { list-style: none; }

/* --- Layout --- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 5%;
}

/* --- Top Utility Bar --- */
.utility-bar {
    border-bottom: var(--border-thin);
    padding: 0.5rem 0;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-600);
}
.utility-flex {
    display: flex;
    justify-content: space-between;
}
.sponsor-link { border-bottom: 1px solid var(--gray-300); }
.sponsor-link:hover { border-bottom-color: var(--black); }

/* --- Masthead Navigation --- */
.masthead {
    padding: 4rem 0 2rem;
    border-bottom: 2px solid var(--black);
}
.masthead-flex {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}
.masthead-brand h1 {
    font-size: 3rem;
    letter-spacing: -0.02em;
    margin-bottom: 0.25rem;
}
.masthead-brand p {
    font-size: 0.9rem;
    color: var(--gray-600);
}
.masthead-nav {
    display: flex;
    gap: 2rem;
}
.nav-item {
    background: none;
    border: none;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid transparent;
    transition: all 0.2s;
    color: var(--gray-600);
}
.nav-item:hover { color: var(--black); }
.nav-item.active {
    color: var(--black);
    border-bottom-color: var(--black);
}

/* --- Views Setup --- */
.view-section { padding: 1rem 0 3rem; }

/* --- Section Titles --- */
.section-title-wrap {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--gray-200);
    padding-bottom: 1rem;
}
.section-title { font-size: 1.75rem; }
.count, .tool-desc { font-size: 0.85rem; color: var(--gray-600); max-width: 500px; }

/* --- Editorial Feature (Native Ad) --- */
.editorial-feature {
    margin: 4rem 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}
.editorial-image-container {
    width: 100%;
    aspect-ratio: 4/5;
    background: var(--gray-100);
    overflow: hidden;
}
.editorial-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%) contrast(1.1);
    transition: transform 10s ease;
}
.editorial-feature:hover .editorial-image {
    transform: scale(1.02);
}
.editorial-caption {
    padding-right: 2rem;
}
.editorial-kicker {
    display: block;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-600);
    margin-bottom: 1rem;
    border-top: 1px solid var(--gray-200);
    padding-top: 1rem;
}
.editorial-caption h2 {
    font-size: 2.25rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}
.editorial-caption p {
    font-size: 1rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.6;
}
.editorial-link {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--black);
    padding-bottom: 0.25rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}
.editorial-link .arrow { transition: transform 0.2s; }
.editorial-link:hover .arrow { transform: translateX(4px); }

/* --- Index Registry List (Directory View) --- */
.index-table-header {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    padding: 1rem 0;
    border-bottom: 2px solid var(--black);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-600);
}
.list-item {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    padding: 1.5rem 0;
    border-bottom: var(--border-thin);
    align-items: center;
    transition: background-color 0.2s;
}
.list-item:hover { background-color: var(--gray-100); }
.col-name strong { font-weight: 500; font-size: 1.1rem; display: block; }
.col-name span { font-size: 0.85rem; color: var(--gray-600); }
.col-sector { font-size: 0.9rem; color: var(--gray-800); }
.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.dot { width: 6px; height: 6px; border-radius: 50%; }
.dot.verified { background-color: var(--black); }
.dot.pending { background-color: transparent; border: 1px solid var(--gray-600); }
.col-action a {
    font-size: 0.8rem;
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* --- Membership Gate --- */
.index-list-wrapper {
    position: relative;
    max-height: 800px;
    overflow: hidden;
}

.membership-gate {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 450px;
    background: linear-gradient(to bottom, rgba(255,255,255,0) 0%, rgba(255,255,255,0.6) 30%, rgba(255,255,255,0.95) 70%, #ffffff 100%);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 30%);
    mask-image: linear-gradient(to bottom, transparent 0%, black 30%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: center;
    padding-bottom: 3rem;
    z-index: 10;
}

.gate-content {
    text-align: center;
    background: var(--white);
    padding: 3rem 5rem;
    border: 1px solid var(--black);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.gate-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.gate-desc {
    font-size: 0.95rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

/* --- Generator View --- */
.tool-grid {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 4rem;
}
.minimal-form {
    border-top: 2px solid var(--black);
    padding-top: 2rem;
}
.form-row {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
}
.form-field { flex: 1; }
.form-field.full-width { margin-bottom: 2rem; }
.form-field label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}
.form-field input, .form-field textarea {
    width: 100%;
    border: none;
    border-bottom: 1px solid var(--gray-300);
    padding: 0.5rem 0;
    font-family: var(--font-sans);
    font-size: 1rem;
    background: transparent;
    border-radius: 0;
    transition: border-color 0.2s;
}
.form-field input:focus, .form-field textarea:focus {
    outline: none;
    border-bottom-color: var(--black);
}
.form-submit-row {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-top: 3rem;
}
.btn-solid {
    background-color: var(--black);
    color: var(--white);
    border: none;
    padding: 1rem 2rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: background-color 0.2s;
}
.btn-solid:hover { background-color: var(--gray-800); }
.security-note { font-size: 0.75rem; color: var(--gray-600); }

.tool-preview-area {
    background-color: var(--gray-100);
    border: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
}
.preview-header {
    padding: 1rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.preview-format { color: var(--gray-600); }
.code-block {
    padding: 1.5rem;
    font-size: 0.8rem;
    line-height: 1.6;
    color: var(--gray-800);
    overflow-x: auto;
    white-space: pre-wrap;
}

/* --- Footer --- */
.footer {
    margin-top: 6rem;
    border-top: 1px solid var(--gray-200);
    padding: 4rem 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
}
.footer-col.align-right { text-align: right; }
.footer .brand { font-family: var(--font-serif); font-size: 1.5rem; margin-bottom: 0.5rem; }
.footer p { font-size: 0.85rem; color: var(--gray-600); }
.footer-links { margin-top: 1rem; font-size: 0.85rem; }

/* Responsive */
@media (max-width: 900px) {
    .editorial-feature { grid-template-columns: 1fr; gap: 2rem; }
    .editorial-caption { padding-right: 0; }
    .masthead-flex { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
    .masthead-brand h1 { font-size: 2.2rem; }
    .tool-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
    .footer-col.align-right { text-align: left; }
    .form-row { flex-direction: column; gap: 1rem; margin-bottom: 1rem; }
    .index-table-header, .list-item { grid-template-columns: 1fr; gap: 0.5rem; padding: 1.5rem 0; }
    .index-table-header { display: none; }
    .utility-flex { flex-direction: column; align-items: center; gap: 0.5rem; text-align: center; }
    .gate-content { padding: 1.5rem; width: 95%; max-width: 100%; box-sizing: border-box; }
    .btn-solid { white-space: normal; text-align: center; font-size: 0.75rem; padding: 0.8rem 1rem; }
    .membership-gate { height: 350px; }
}