/*
Theme Name: Art of Intralogistics
Theme URI: https://theartoflogistics.com
Author: Kyle Nadler
Author URI: https://theartoflogistics.com
Description: Professional intralogistics engineering tools and educational platform. Clean, utilitarian design with blue accent colors for The Art of Intralogistics.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.6
Requires PHP: 8.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: art-of-intralogistics
Tags: professional, engineering, tools, responsive
*/

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary:    #1a6cdb;
  --color-primary-dk: #1254b0;
  --color-primary-lt: #e8f0fc;
  --color-bg:         #f5f6f8;
  --color-surface:    #ffffff;
  --color-border:     #dde1e9;
  --color-text:       #1c2231;
  --color-text-muted: #6b7280;
  --color-overlay:    rgba(15, 23, 42, 0.70);
  --color-lock-bg:    rgba(15, 23, 42, 0.78);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-card: 0 1px 4px rgba(0,0,0,0.08), 0 0 0 1px var(--color-border);
  --shadow-card-hover: 0 4px 16px rgba(26,108,219,0.14), 0 0 0 1px var(--color-primary);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  --max-width: 1280px;
  --gutter: 24px;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

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

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text);
}

h1 { font-size: clamp(1.75rem, 3vw, 2.5rem); }
h2 { font-size: clamp(1.25rem, 2vw, 1.75rem); }
h3 { font-size: 1.125rem; }
h4 { font-size: 1rem; }

.text-accent { color: var(--color-primary); }
.text-muted  { color: var(--color-text-muted); font-size: 0.875rem; }

/* ============================================================
   LAYOUT WRAPPERS
   ============================================================ */
.site-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
  width: 100%;
}

/* ============================================================
   SITE HEADER / NAV
   ============================================================ */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  gap: 16px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.site-logo:hover { text-decoration: none; color: var(--color-text); }
.site-logo__icon {
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 0.875rem;
  font-weight: 900;
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.site-nav a {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}
.site-nav a:hover {
  background: var(--color-bg);
  color: var(--color-text);
  text-decoration: none;
}
.site-nav a.active {
  background: var(--color-primary-lt);
  color: var(--color-primary);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background 0.15s, box-shadow 0.15s, opacity 0.15s;
  line-height: 1;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; }

.btn--primary {
  background: var(--color-primary);
  color: white;
}
.btn--primary:hover {
  background: var(--color-primary-dk);
  color: white;
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn--ghost:hover {
  background: var(--color-bg);
  color: var(--color-text);
}

.btn--sm {
  padding: 5px 12px;
  font-size: 0.8125rem;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 48px 0 40px;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--color-primary-lt);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.hero h1 {
  margin-bottom: 16px;
}

.hero__intro {
  color: var(--color-text-muted);
  max-width: 680px;
  font-size: 1.0625rem;
  line-height: 1.7;
  margin-bottom: 28px;
}

.hero__cta-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.hero__stat-row {
  display: flex;
  gap: 32px;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.hero__stat strong {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
}
.hero__stat span {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ============================================================
   MAIN CONTENT AREA — 2-COLUMN LAYOUT
   ============================================================ */
.main-content {
  flex: 1;
  padding: 32px 0 64px;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 28px;
  align-items: start;
}

/* ============================================================
   SECTION HEADERS
   ============================================================ */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
}

.section-header h2 {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section-header h2::before {
  content: '';
  display: block;
  width: 3px;
  height: 16px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* ============================================================
   TOOLS GRID
   ============================================================ */
.tools-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 32px;
}

.tool-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: box-shadow 0.18s, border-color 0.18s, transform 0.18s;
  overflow: hidden;
  min-height: 110px;
}

.tool-card:hover {
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.tool-card a.tool-card__link {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.tool-card__icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary-lt);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  flex-shrink: 0;
}

.tool-card__title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

.tool-card__desc {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.45;
}

.tool-card__badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.6875rem;
  font-weight: 600;
  background: #dcfce7;
  color: #166534;
  padding: 2px 7px;
  border-radius: 999px;
  width: fit-content;
}

/* LOCKED TOOL OVERLAY */
.tool-card--locked .tool-card__icon,
.tool-card--locked .tool-card__title,
.tool-card--locked .tool-card__desc {
  opacity: 0.45;
}

.tool-card__lock-overlay {
  position: absolute;
  inset: 0;
  background: var(--color-lock-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border-radius: var(--radius-md);
  z-index: 2;
  cursor: pointer;
  transition: background 0.2s;
}

.tool-card__lock-overlay:hover {
  background: rgba(15, 23, 42, 0.88);
}

.tool-card__lock-overlay svg {
  color: white;
  opacity: 0.9;
}

.tool-card__lock-text {
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  opacity: 0.9;
  letter-spacing: 0.02em;
}

.tool-card__lock-cta {
  color: var(--color-primary);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: rgba(255,255,255,0.12);
  padding: 2px 8px;
  border-radius: 999px;
}

/* ============================================================
   LESSONS GRID
   ============================================================ */
.lessons-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.lesson-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  transition: box-shadow 0.18s;
}
.lesson-card:hover {
  box-shadow: var(--shadow-card-hover);
}

.lesson-card__num {
  width: 28px;
  height: 28px;
  background: var(--color-primary-lt);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.lesson-card__title {
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--color-text);
  margin-bottom: 4px;
}
.lesson-card__meta {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
}

/* ============================================================
   SIDEBAR / RIGHT COLUMN
   ============================================================ */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sidebar-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.sidebar-card__heading {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

/* AUTHOR CARD */
.author-card__photo {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--color-primary-lt);
  margin-bottom: 12px;
}

.author-card__photo-placeholder {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: var(--color-primary-lt);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 12px;
  border: 3px solid var(--color-primary-lt);
}

.author-card__name {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 2px;
}
.author-card__title {
  font-size: 0.75rem;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 10px;
}
.author-card__bio {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}
.author-card__links {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.author-card__link {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-primary);
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-lt);
  transition: background 0.15s;
}
.author-card__link:hover {
  background: #d0e4fa;
  text-decoration: none;
}

/* QUICK STATS SIDEBAR */
.quick-stat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-bg);
  font-size: 0.8125rem;
}
.quick-stat:last-child { border-bottom: none; }
.quick-stat__label { color: var(--color-text-muted); }
.quick-stat__value { font-weight: 700; color: var(--color-text); }

/* ============================================================
   TOOL DETAIL PAGE
   ============================================================ */
.tool-page__header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 32px 0;
}

.tool-page__breadcrumb {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.tool-page__breadcrumb a { color: var(--color-primary); }

.tool-page__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.tool-page__badge {
  font-size: 0.6875rem;
  font-weight: 700;
  background: #dcfce7;
  color: #166534;
  padding: 2px 8px;
  border-radius: 999px;
}

.tool-page__iframe-wrap {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin: 28px 0;
}

.tool-page__iframe-wrap iframe {
  display: block;
  width: 100%;
  height: 900px;
  border: none;
}

/* ============================================================
   AUTH MODAL
   ============================================================ */
.auth-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  backdrop-filter: blur(2px);
}
.auth-modal-overlay.hidden { display: none; }

.auth-modal {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 40px;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

.auth-modal__logo {
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 900;
  font-size: 1rem;
  margin-bottom: 20px;
}

.auth-modal h2 {
  font-size: 1.375rem;
  margin-bottom: 6px;
}
.auth-modal p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 24px;
}

.auth-form__group {
  margin-bottom: 16px;
}
.auth-form__group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 6px;
}
.auth-form__group input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color 0.15s;
}
.auth-form__group input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: white;
}

.auth-modal__submit {
  width: 100%;
  padding: 12px;
  margin-top: 8px;
}

.auth-modal__switch {
  text-align: center;
  margin-top: 16px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 32px 0;
}

.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.site-footer__copy {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.site-footer__links {
  display: flex;
  gap: 16px;
}
.site-footer__links a {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}
.site-footer__links a:hover { color: var(--color-primary); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
  .sidebar {
    order: -1;   /* Author card above tools on mobile */
  }
}

@media (max-width: 640px) {
  :root { --gutter: 16px; }

  .tools-grid,
  .lessons-grid {
    grid-template-columns: 1fr;
  }

  .site-nav { display: none; }

  .hero { padding: 32px 0 28px; }

  .hero__stat-row { gap: 20px; }

  .site-header__inner { height: 52px; }
}

/* ============================================================
   UTILITY
   ============================================================ */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

.mt-0 { margin-top: 0; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }

/* ============================================================
   WORDPRESS CORE ALIGNMENT CLASSES
   ============================================================ */
.alignleft  { float: left; margin-right: 1.5em; }
.alignright { float: right; margin-left: 1.5em; }
.aligncenter { margin-left: auto; margin-right: auto; display: block; }
.alignwide  { margin-left: -var(--gutter); margin-right: -var(--gutter); }

.wp-block-image img { border-radius: var(--radius-md); }