/*
Theme Name: Ontology Trading Systems
Theme URI: https://www.ontologytrading.com
Description: Custom WordPress theme for Ontology Trading Systems — AI-powered algorithmic trading platform for institutional markets.
Version: 1.0.0
Author: Ontology Trading Systems
Author URI: https://www.ontologytrading.com
Text Domain: ontology
Tags: dark, business, finance, one-page
*/

/* ============================================================
   VARIABLES & RESET
   ============================================================ */
:root {
    --black:       #000000;
    --dark:        #0a0a0a;
    --card-bg:     #111111;
    --card-bg2:    #0d0d0d;
    --card-border: #222222;
    --green:       #81ce5c;
    --green-dim:   #6db84a;
    --green-glow:  rgba(129, 206, 92, 0.15);
    --green-bg:    rgba(129, 206, 92, 0.06);
    --green-btn-text: #000000;
    --blue:        #4A90E2;
    --blue-bg:     rgba(74, 144, 226, 0.15);
    --purple:      #9B59B6;
    --purple-bg:   rgba(155, 89, 182, 0.15);
    --white:       #ffffff;
    --gray:        #9CA3AF;
    --gray-dark:   #6B7280;
    --font-body:   'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-head:   'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
    --nav-height:  140px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--black);
    color: var(--white);
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-head);
    font-weight: 700;
    line-height: 1.15;
    color: var(--white);
}

p {
    color: var(--gray);
    line-height: 1.7;
}

/* ============================================================
   UTILITY
   ============================================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section-pad {
    padding: 100px 0;
}

.text-green  { color: var(--green); }
.text-blue   { color: var(--blue); }
.text-purple { color: var(--purple); }
.text-white  { color: var(--white); }
.text-gray   { color: var(--gray); }
.text-center { text-align: center; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 6px;
    font-family: var(--font-head);
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    text-decoration: none;
}

.btn-green {
    background-color: var(--green);
    color: var(--green-btn-text);
}

.btn-green:hover {
    background-color: var(--green-dim);
    color: var(--green-btn-text);
    transform: translateY(-1px);
}

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

.btn-outline-green:hover {
    background: var(--green-bg);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
#site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: background 0.3s ease;
}

#site-header.scrolled {
    background: rgba(0, 0, 0, 0.97);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
}

.site-logo img {
    height: 64px;
    width: auto;
}

.site-logo .logo-text {
    font-family: var(--font-head);
    font-size: 22px;
    font-weight: 800;
    color: var(--white);
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-menu a {
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 500;
    color: var(--white);
    transition: color 0.2s;
}

.nav-menu a:hover {
    color: var(--green);
}

.nav-menu .btn-green {
    padding: 10px 20px;
    font-size: 14px;
}

/* Mobile hamburger */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    flex-direction: column;
    gap: 5px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
#hero {
    min-height: 100vh;
    background: var(--black);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: calc(var(--nav-height) + 60px) 24px 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-eyebrow {
    font-size: clamp(28px, 5vw, 52px);
    font-family: var(--font-head);
    font-weight: 800;
    color: var(--white);
    letter-spacing: -0.5px;
    margin-bottom: 4px;
}

.hero-for {
    font-size: clamp(16px, 2.5vw, 22px);
    color: var(--gray);
    font-weight: 400;
    margin-bottom: 8px;
    display: block;
}

.hero-title {
    font-size: clamp(52px, 9vw, 96px);
    font-family: var(--font-head);
    font-weight: 800;
    color: var(--green);
    letter-spacing: -1px;
    line-height: 1;
    margin-bottom: 28px;
}

.hero-subtitle {
    font-size: clamp(15px, 2vw, 18px);
    color: var(--gray);
    max-width: 580px;
    margin: 0 auto 60px;
    line-height: 1.65;
}

/* Strategy Chat Mockup */
.chat-mockup-wrap {
    width: 100%;
    max-width: 680px;
    margin: 0 auto 56px;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.12);
    background: #0d1117;
    box-shadow: 0 24px 80px rgba(0,0,0,0.6), 0 0 0 1px rgba(129,206,92,0.04);
}

.chat-mockup-title {
    background: #161b22;
    padding: 10px 16px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1.5px;
    color: var(--gray);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    text-align: left;
}

.chat-messages {
    padding: 16px;
    min-height: 220px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.chat-msg {
    border-radius: 8px;
    padding: 12px 14px;
    text-align: left;
    font-size: 13px;
    line-height: 1.55;
}

.chat-msg-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.2px;
    color: var(--gray-dark);
    margin-bottom: 6px;
}

.chat-msg-assistant {
    background: #161b22;
    border: 1px solid rgba(255,255,255,0.08);
    color: var(--gray);
}

.chat-msg-user {
    background: #1c2333;
    border: 1px solid rgba(255,255,255,0.08);
    color: #c9d1d9;
}

.chat-input-area {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.chat-input-field {
    width: 100%;
    background: #161b22;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px;
    padding: 10px 12px;
    color: var(--gray-dark);
    font-size: 12px;
    font-family: var(--font-body);
    resize: none;
    outline: none;
    min-height: 48px;
}

.chat-btn-row {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

.chat-btn {
    padding: 7px 18px;
    border-radius: 5px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    font-family: var(--font-body);
}

.chat-btn-send {
    background: #2563eb;
    color: #fff;
}

.chat-btn-reset {
    background: #374151;
    color: #9CA3AF;
}

.chat-thinking {
    padding: 8px 16px;
    font-size: 11px;
    color: var(--gray-dark);
    border-top: 1px solid rgba(255,255,255,0.05);
    text-align: left;
    letter-spacing: 0.5px;
}

.thinking-dots {
    display: inline-flex;
    gap: 4px;
    vertical-align: middle;
}

.thinking-dots span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
    animation: dotPulse 1.4s infinite ease-in-out;
}

.thinking-dots span:nth-child(2) { animation-delay: 0.2s; }
.thinking-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotPulse {
    0%, 80%, 100% { opacity: 0.3; transform: scale(0.8); }
    40% { opacity: 1; transform: scale(1.1); }
}

/* Chat message animation */
.chat-msg {
    border-radius: 8px;
    padding: 12px 14px;
    text-align: left;
    font-size: 13px;
    line-height: 1.55;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.chat-msg.visible {
    opacity: 1;
    transform: translateY(0);
}

.chat-msg .typewriter {
    overflow: hidden;
    border-right: 2px solid var(--gray-dark);
    white-space: normal;
    animation: blinkCursor 0.7s step-end infinite;
}

.chat-msg .typewriter.done {
    border-right: none;
    animation: none;
}

@keyframes blinkCursor {
    from, to { border-color: transparent; }
    50% { border-color: var(--gray-dark); }
}

/* Scroll indicator */
.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
}

.scroll-indicator span {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--gray-dark);
}

.scroll-indicator svg {
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(6px); }
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
#about {
    background: var(--black);
    padding: 100px 0;
}

.about-heading {
    font-size: clamp(32px, 5vw, 52px);
    font-weight: 800;
    text-align: center;
    margin-bottom: 16px;
}

.about-definition {
    text-align: center;
    font-style: italic;
    color: var(--gray-dark);
    font-size: 15px;
    margin-bottom: 12px;
}

.about-definition-body {
    text-align: center;
    color: var(--gray);
    font-size: 15px;
    max-width: 680px;
    margin: 0 auto 48px;
}

.about-card {
    background: var(--green-bg);
    border: 1px solid rgba(129, 206, 92, 0.2);
    border-radius: 12px;
    padding: 40px 48px;
    margin-bottom: 72px;
    max-width: 860px;
    margin-left: auto;
    margin-right: auto;
}

.about-card p {
    color: var(--green);
    font-size: clamp(16px, 2.2vw, 20px);
    font-weight: 500;
    text-align: center;
    line-height: 1.7;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.feature-icon {
    color: var(--green);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon svg {
    width: 36px;
    height: 36px;
    stroke: var(--green);
    fill: none;
    stroke-width: 1.5;
}

.feature-title {
    font-family: var(--font-head);
    font-size: clamp(20px, 3vw, 28px);
    font-weight: 800;
    color: var(--white);
}

.feature-desc {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1.2px;
    color: var(--gray-dark);
    text-transform: uppercase;
    line-height: 1.5;
}

/* ============================================================
   WHO WE SERVE SECTION
   ============================================================ */
#who-we-serve {
    background: var(--black);
    padding: 100px 0 120px;
}

.section-tag {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--green);
    text-align: center;
    margin-bottom: 20px;
    display: block;
}

.section-heading-large {
    font-size: clamp(28px, 4.5vw, 52px);
    font-weight: 800;
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
    line-height: 1.1;
}

.serve-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.serve-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 32px;
    transition: border-color 0.3s ease;
}

.serve-card:hover {
    border-color: rgba(255,255,255,0.15);
}

.serve-icon-wrap {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.serve-icon-wrap svg {
    width: 26px;
    height: 26px;
    fill: none;
    stroke-width: 1.8;
}

.serve-icon-buy {
    background: var(--blue-bg);
}
.serve-icon-buy svg { stroke: var(--blue); }

.serve-icon-sell {
    background: var(--green-glow);
}
.serve-icon-sell svg { stroke: var(--green); }

.serve-icon-retail {
    background: var(--purple-bg);
}
.serve-icon-retail svg { stroke: var(--purple); }

.serve-card-title {
    font-family: var(--font-head);
    font-size: 18px;
    font-weight: 800;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.serve-card-title.blue   { color: var(--blue); }
.serve-card-title.green  { color: var(--green); }
.serve-card-title.purple { color: var(--purple); }

.serve-list li {
    color: var(--gray);
    font-size: 14px;
    padding: 5px 0;
    padding-left: 16px;
    position: relative;
}

.serve-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--gray-dark);
}

/* ============================================================
   OUR OFFERINGS SECTION
   ============================================================ */
#offerings {
    background: var(--black);
    padding: 100px 0;
}

.section-heading {
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 800;
    text-align: center;
    margin-bottom: 12px;
}

.section-sub {
    text-align: center;
    color: var(--gray);
    font-size: 16px;
    margin-bottom: 56px;
}

.offerings-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.offering-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 32px;
    display: flex;
    flex-direction: column;
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.offering-card:hover {
    border-color: rgba(255,255,255,0.2);
    transform: translateY(-3px);
}

.offering-title {
    font-family: var(--font-head);
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 14px;
}

.offering-title sup {
    font-size: 10px;
    vertical-align: super;
}

.offering-desc {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.65;
    flex: 1;
    margin-bottom: 24px;
}

.offering-desc a {
    color: var(--green);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.learn-more-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--green);
    font-size: 14px;
    font-weight: 600;
    transition: gap 0.2s ease;
}

.learn-more-link:hover {
    gap: 10px;
}

/* ============================================================
   CTA SECTION
   ============================================================ */
#cta {
    background: var(--black);
    padding: 0 0 100px;
}

.cta-box {
    background: rgba(129, 206, 92, 0.05);
    border: 1px solid rgba(129, 206, 92, 0.2);
    border-radius: 16px;
    padding: 72px 40px;
    text-align: center;
    max-width: 860px;
    margin: 0 auto;
}

.cta-heading {
    font-size: clamp(24px, 4vw, 40px);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 14px;
}

.cta-sub {
    font-size: 16px;
    color: var(--gray);
    margin-bottom: 40px;
}

.cta-email {
    display: block;
    margin-top: 20px;
    font-size: 14px;
    color: var(--gray-dark);
    letter-spacing: 0.3px;
}

/* ============================================================
   FOOTER
   ============================================================ */
#site-footer {
    background: var(--black);
    border-top: 1px solid var(--card-border);
    padding: 24px 0;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.footer-left {
    font-size: 13px;
    color: var(--gray-dark);
}

.footer-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.footer-right a {
    font-size: 13px;
    color: var(--gray-dark);
    transition: color 0.2s;
}

.footer-right a:hover {
    color: var(--white);
}

.footer-x-icon {
    display: flex;
    align-items: center;
    color: var(--gray-dark);
    transition: color 0.2s;
}

.footer-x-icon:hover {
    color: var(--white);
}

.footer-x-icon svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

/* ============================================================
   BLOG INDEX (home.php)
   ============================================================ */
#blog-header {
    background: var(--black);
    padding: calc(var(--nav-height) + 80px) 0 60px;
    text-align: center;
    border-bottom: 1px solid var(--card-border);
}

.blog-header-tag {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--green);
    margin-bottom: 14px;
    display: block;
}

.blog-header-title {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 800;
    margin-bottom: 16px;
}

.blog-header-sub {
    font-size: 16px;
    color: var(--gray);
    max-width: 500px;
    margin: 0 auto;
}

#blog-posts {
    background: var(--black);
    padding: 80px 0 100px;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.post-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    overflow: hidden;
    transition: border-color 0.3s, transform 0.3s;
    display: flex;
    flex-direction: column;
}

.post-card:hover {
    border-color: rgba(255,255,255,0.15);
    transform: translateY(-3px);
}

.post-card-thumb {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: #111;
}

.post-card-thumb-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #111 0%, #1a1a1a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.post-card-thumb-placeholder svg {
    width: 40px;
    height: 40px;
    stroke: var(--card-border);
    fill: none;
}

.post-card-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.post-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.post-card-cat {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--green);
}

.post-card-date {
    font-size: 12px;
    color: var(--gray-dark);
}

.post-card-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 10px;
    line-height: 1.3;
}

.post-card-title a {
    color: var(--white);
    transition: color 0.2s;
}

.post-card-title a:hover {
    color: var(--green);
}

.post-card-excerpt {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.6;
    flex: 1;
    margin-bottom: 20px;
}

.post-card-read-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--green);
    font-size: 13px;
    font-weight: 600;
    margin-top: auto;
}

.no-posts {
    text-align: center;
    padding: 80px 0;
    color: var(--gray);
}

.no-posts h2 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--white);
}

/* Pagination */
.pagination-wrap {
    margin-top: 60px;
    display: flex;
    justify-content: center;
}

.pagination-wrap .nav-links {
    display: flex;
    gap: 8px;
}

.pagination-wrap a,
.pagination-wrap span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    border: 1px solid var(--card-border);
    color: var(--gray);
    transition: all 0.2s;
}

.pagination-wrap a:hover {
    border-color: var(--green);
    color: var(--green);
}

.pagination-wrap .current {
    background: var(--green);
    color: var(--black);
    border-color: var(--green);
}

/* ============================================================
   SINGLE BLOG POST
   ============================================================ */
#single-post {
    background: var(--black);
    padding: calc(var(--nav-height) + 80px) 0 100px;
}

.post-header {
    max-width: 780px;
    margin: 0 auto 60px;
    text-align: center;
}

.post-header-cat {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--green);
    margin-bottom: 16px;
}

.post-header-title {
    font-size: clamp(28px, 4.5vw, 48px);
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.15;
}

.post-header-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    font-size: 13px;
    color: var(--gray-dark);
}

.post-featured-image {
    max-width: 860px;
    margin: 0 auto 60px;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--card-border);
}

.post-featured-image img {
    width: 100%;
    height: auto;
    display: block;
}

.post-content-wrap {
    max-width: 780px;
    margin: 0 auto;
}

.post-content {
    color: var(--gray);
    font-size: 17px;
    line-height: 1.8;
}

.post-content h2,
.post-content h3,
.post-content h4 {
    color: var(--white);
    font-family: var(--font-head);
    margin: 40px 0 16px;
}

.post-content h2 { font-size: 28px; }
.post-content h3 { font-size: 22px; }

.post-content p { margin-bottom: 20px; }

.post-content a {
    color: var(--green);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.post-content ul,
.post-content ol {
    padding-left: 24px;
    margin-bottom: 20px;
}

.post-content ul li,
.post-content ol li {
    color: var(--gray);
    margin-bottom: 8px;
    line-height: 1.7;
}

.post-content ul li::marker { color: var(--green); }
.post-content ol li::marker { color: var(--green); }

.post-content blockquote {
    border-left: 3px solid var(--green);
    padding-left: 20px;
    margin: 28px 0;
    color: #c9d1d9;
    font-style: italic;
}

.post-content pre {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 20px;
    overflow-x: auto;
    margin-bottom: 20px;
}

.post-content code {
    font-family: 'Courier New', monospace;
    font-size: 14px;
    color: var(--green);
}

.post-content p code {
    background: var(--card-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 14px;
}

.post-content img {
    border-radius: 8px;
    margin: 24px 0;
    border: 1px solid var(--card-border);
}

/* Back to blog */
.back-to-blog {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--green);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 48px;
    transition: gap 0.2s;
}

.back-to-blog:hover { gap: 12px; }

/* Post navigation */
.post-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--card-border);
    max-width: 780px;
    margin-left: auto;
    margin-right: auto;
}

.post-nav-item {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 10px;
    padding: 20px;
    transition: border-color 0.2s;
}

.post-nav-item:hover { border-color: rgba(255,255,255,0.2); }

.post-nav-label {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--gray-dark);
    margin-bottom: 8px;
}

.post-nav-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--white);
    line-height: 1.4;
}

.post-nav-title a {
    color: var(--white);
    transition: color 0.2s;
}

.post-nav-title a:hover { color: var(--green); }

/* ============================================================
   GENERIC PAGE
   ============================================================ */
#page-content {
    background: var(--black);
    padding: calc(var(--nav-height) + 80px) 0 100px;
}

.page-header {
    text-align: center;
    margin-bottom: 60px;
}

.page-title {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 800;
}

.page-body {
    max-width: 860px;
    margin: 0 auto;
}

.page-body-content {
    color: var(--gray);
    font-size: 17px;
    line-height: 1.8;
}

.page-body-content h2,
.page-body-content h3 {
    color: var(--white);
    margin: 36px 0 14px;
}

.page-body-content p { margin-bottom: 18px; }

.page-body-content a {
    color: var(--green);
    text-decoration: underline;
}

/* ============================================================
   CONTACT FORM
   ============================================================ */
.contact-form {
    max-width: 560px;
    margin: 0 auto;
    text-align: left;
}

.contact-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
}

.contact-form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.contact-form-row .contact-form-group {
    margin-bottom: 0;
}

.contact-form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray);
    letter-spacing: 0.3px;
}

.contact-form-group input,
.contact-form-group textarea {
    width: 100%;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 12px 14px;
    font-size: 15px;
    font-family: var(--font-body);
    color: var(--white);
    outline: none;
    transition: border-color 0.2s;
}

.contact-form-group input:focus,
.contact-form-group textarea:focus {
    border-color: var(--green);
}

.contact-form-group input::placeholder,
.contact-form-group textarea::placeholder {
    color: var(--gray-dark);
}

.contact-form-group textarea {
    min-height: 140px;
    resize: vertical;
}

.contact-form-submit {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    border-radius: 6px;
    font-family: var(--font-head);
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    border: none;
    background: var(--green);
    color: var(--green-btn-text);
    transition: all 0.2s ease;
    margin-top: 8px;
}

.contact-form-submit:hover {
    background: var(--green-dim);
    transform: translateY(-1px);
}

.contact-success {
    background: rgba(129, 206, 92, 0.1);
    border: 1px solid rgba(129, 206, 92, 0.3);
    border-radius: 8px;
    padding: 16px 20px;
    color: var(--green);
    font-size: 15px;
    font-weight: 500;
    text-align: center;
    margin-bottom: 20px;
}

.contact-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
    padding: 16px 20px;
    color: #ef4444;
    font-size: 15px;
    font-weight: 500;
    text-align: center;
    margin-bottom: 20px;
}

@media (max-width: 480px) {
    .contact-form-row { grid-template-columns: 1fr; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }

    .serve-grid,
    .offerings-grid,
    .posts-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root { --nav-height: 100px; }

    .nav-menu {
        display: none;
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(0,0,0,0.98);
        flex-direction: column;
        padding: 24px;
        gap: 24px;
        border-bottom: 1px solid var(--card-border);
    }

    .nav-menu.open { display: flex; }

    .nav-toggle { display: flex; }

    .hero-eyebrow { font-size: 26px; }
    .hero-title   { font-size: 48px; }

    .about-card { padding: 28px 24px; }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

    .serve-grid,
    .offerings-grid,
    .posts-grid {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        flex-direction: column-reverse;
        text-align: center;
    }

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

    .cta-box { padding: 48px 24px; }
}

@media (max-width: 480px) {
    .features-grid { grid-template-columns: 1fr; }
    .hero-title     { font-size: 40px; }
}