/*
Theme Name: The Technical Navigator Classic
Theme URI: https://tecnavigator.com
Author: The Technical Navigator Team
Author URI: https://tecnavigator.com
Description: High-performance, Apple-style minimalist Classic WordPress Theme engineered for technical services, computer repair, 4K CCTV surveillance, and smart home automation. Features single-template shortcode-driven architecture, native meta boxes, Appearance -> Menus support, strict 1200px container constraints, problem-first Bento Grid, and SEO/AI crawler collapsible accordion.
Version: 3.0.0
Requires at least: 5.8
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: tecnavigator-classic
Tags: classic-theme, custom-menu, editor-style, grid-layout, one-column, custom-colors, featured-images
*/

/* ==========================================================================
   Design Tokens & CSS Variables
   ========================================================================== */
:root {
  --tn-font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", "Segoe UI", Arial, sans-serif;
  --tn-font-mono: "SF Mono", Menlo, Monaco, Consolas, "Courier New", monospace;

  /* Colors */
  --tn-white: #FFFFFF;
  --tn-offwhite: #F5F5F7;
  --tn-offwhite-alt: #EBEBED;
  --tn-graphite: #1D1D1F;
  --tn-gray-dark: #333336;
  --tn-gray: #6E6E73;
  --tn-gray-light: #86868B;
  --tn-border: #E5E5EA;
  --tn-border-dark: #D2D2D7;
  --tn-blue: #0066CC;
  --tn-blue-hover: #0077ED;
  --tn-blue-subtle: #EBF5FF;
  --tn-blue-glow: rgba(0, 102, 204, 0.15);
  --tn-dark-bg: #1D1D1F;
  --tn-dark-surface: #2C2C2E;

  /* Elevation & Shadows */
  --tn-shadow-subtle: 0 2px 10px rgba(0, 0, 0, 0.03);
  --tn-shadow-card: 0 4px 20px rgba(0, 0, 0, 0.05);
  --tn-shadow-hover: 0 16px 36px rgba(0, 0, 0, 0.09), 0 2px 6px rgba(0, 0, 0, 0.04);
  --tn-shadow-elevated: 0 24px 48px rgba(0, 0, 0, 0.12), 0 4px 12px rgba(0, 0, 0, 0.05);

  /* Transitions */
  --tn-ease-apple: cubic-bezier(0.16, 1, 0.3, 1);
  --tn-duration-fast: 0.2s;
  --tn-duration-normal: 0.35s;

  /* Border Radii */
  --tn-radius-sm: 8px;
  --tn-radius-md: 14px;
  --tn-radius-lg: 20px;
  --tn-radius-xl: 28px;
  --tn-radius-pill: 980px;

  /* Strict Container Constraint */
  --tn-container-max: 1200px;
}

/* ==========================================================================
   Base Resets & Strict Container Rules
   ========================================================================== */
html {
  font-family: var(--tn-font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  color: var(--tn-graphite);
  background-color: var(--tn-white);
  box-sizing: border-box;
}

*, *::before, *::after {
  box-sizing: inherit;
}

body {
  margin: 0;
  padding: 0;
  line-height: 1.55;
  font-size: 17px;
  letter-spacing: -0.015em;
  color: var(--tn-graphite);
  background-color: var(--tn-white);
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  width: 100%;
}

main.site-main {
  flex: 1 0 auto;
  width: 100%;
}

/* Strict 1200px Container Constraint */
.tn-container,
.header-inner,
.footer-inner,
.tn-section-inner {
  max-width: var(--tn-container-max) !important;
  margin-left: auto !important;
  margin-right: auto !important;
  padding-left: 24px;
  padding-right: 24px;
  width: 100%;
  box-sizing: border-box;
}

/* Full Width Background Sections */
.tn-section-full {
  width: 100%;
  max-width: 100%;
  margin-left: 0 !important;
  margin-right: 0 !important;
  box-sizing: border-box;
}

/* Inner content inside full-width section stays locked within 1200px */
.tn-section-full > .tn-container {
  max-width: var(--tn-container-max) !important;
  margin-left: auto !important;
  margin-right: auto !important;
  padding-left: 24px !important;
  padding-right: 24px !important;
  width: 100% !important;
  box-sizing: border-box !important;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  color: var(--tn-graphite);
  font-weight: 600;
  letter-spacing: -0.025em;
  margin-top: 0;
  margin-bottom: 0.75rem;
}

h1 {
  font-size: clamp(2.4rem, 5vw + 1rem, 4.25rem);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -0.035em;
}

h2 {
  font-size: clamp(1.8rem, 3.5vw + 0.5rem, 2.75rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

h3 {
  font-size: clamp(1.3rem, 2vw + 0.5rem, 1.65rem);
  line-height: 1.25;
}

h4 {
  font-size: 1.15rem;
  line-height: 1.35;
}

p {
  margin-top: 0;
  margin-bottom: 1.25rem;
}

p.lead {
  font-size: 1.2rem;
  line-height: 1.5;
  color: var(--tn-gray);
}

a {
  color: var(--tn-blue);
  text-decoration: none;
  transition: color var(--tn-duration-fast) var(--tn-ease-apple), opacity var(--tn-duration-fast) var(--tn-ease-apple);
}

a:hover {
  color: var(--tn-blue-hover);
  text-decoration: none;
}

.custom-logo-link {
  display: flex !important;
  align-items: center !important;
  text-decoration: none !important;
  max-height: 52px !important;
  max-width: 270px !important;
  overflow: hidden !important;
}

.custom-logo,
.custom-logo-link img,
.tn-brand img,
.site-header img {
  max-height: 52px !important;
  width: auto !important;
  max-width: 270px !important;
  object-fit: contain !important;
  display: block !important;
}

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

/* ==========================================================================
   Apple-Style Buttons & Pills
   ========================================================================== */
.tn-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--tn-font-sans);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.3;
  padding: 12px 24px;
  border-radius: var(--tn-radius-pill);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--tn-duration-fast) var(--tn-ease-apple);
  box-sizing: border-box;
}

.tn-btn-primary {
  background-color: var(--tn-blue) !important;
  color: var(--tn-white) !important;
  border-color: var(--tn-blue) !important;
  box-shadow: 0 4px 14px rgba(0, 102, 204, 0.25);
}

.tn-btn-primary:hover {
  background-color: var(--tn-blue-hover) !important;
  border-color: var(--tn-blue-hover) !important;
  box-shadow: 0 6px 20px rgba(0, 102, 204, 0.35);
  transform: translateY(-1px);
}

.tn-btn-secondary {
  background-color: transparent !important;
  color: var(--tn-graphite) !important;
  border: 1px solid var(--tn-border-dark) !important;
}

.tn-btn-secondary:hover {
  background-color: rgba(0, 0, 0, 0.04) !important;
  border-color: var(--tn-graphite) !important;
  transform: translateY(-1px);
}

/* ==========================================================================
   Cards & Surfaces
   ========================================================================== */
.tn-card {
  background-color: var(--tn-white);
  border-radius: var(--tn-radius-lg);
  border: 1px solid var(--tn-border);
  box-shadow: var(--tn-shadow-card);
  transition: transform var(--tn-duration-normal) var(--tn-ease-apple),
              box-shadow var(--tn-duration-normal) var(--tn-ease-apple),
              border-color var(--tn-duration-normal) var(--tn-ease-apple);
  overflow: hidden;
}

.tn-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--tn-shadow-hover);
  border-color: var(--tn-border-dark);
}

.tn-card-elevated {
  background-color: var(--tn-white);
  border-radius: var(--tn-radius-xl);
  border: 1px solid rgba(0, 0, 0, 0.06);
  box-shadow: var(--tn-shadow-elevated);
}

/* ==========================================================================
   Image Placeholders (16:9 & Responsive)
   ========================================================================== */
.tn-placeholder-box {
  background: linear-gradient(135deg, #F5F5F7 0%, #EBEBED 100%);
  border: 1.5px dashed var(--tn-border-dark);
  border-radius: var(--tn-radius-md);
  padding: 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  position: relative;
  transition: border-color var(--tn-duration-fast) var(--tn-ease-apple);
}

.tn-placeholder-box.ratio-16-9 {
  aspect-ratio: 16 / 9;
  width: 100%;
  padding: 1rem;
}

.tn-placeholder-box:hover {
  border-color: var(--tn-blue);
}

.tn-placeholder-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--tn-blue);
  background: rgba(0, 102, 204, 0.08);
  padding: 4px 10px;
  border-radius: var(--tn-radius-pill);
}

.tn-placeholder-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--tn-graphite);
  margin: 0;
  line-height: 1.35;
}

.tn-placeholder-desc {
  font-size: 12px;
  color: var(--tn-gray);
  margin: 0;
}

.tn-image-frame {
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
  width: 100%;
  box-sizing: border-box;
}

/* ==========================================================================
   Badges & Eyebrows
   ========================================================================== */
.tn-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--tn-blue-subtle);
  color: var(--tn-blue);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--tn-radius-pill);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.tn-eyebrow {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--tn-blue);
  margin-bottom: 8px;
}

.tn-gradient-text {
  background: linear-gradient(135deg, #0066CC 0%, #00C7BE 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==========================================================================
   Layout Shortcode Rules (.row_2_grid, .col_item, .row_3, .row_4)
   ========================================================================== */
.row_2_grid {
  display: flex !important;
  flex-direction: row !important;
  flex-wrap: wrap !important;
  gap: 24px !important;
  width: 100% !important;
  max-width: 1200px !important;
  margin: 0 auto 24px auto !important;
}

.row_2_grid > p {
  display: contents !important;
}

.row_2_grid .col_item,
.row_2_grid > div,
.row_2_grid > p > .col_item {
  width: calc(50% - 12px) !important;
  flex: 0 0 calc(50% - 12px) !important;
  max-width: calc(50% - 12px) !important;
  box-sizing: border-box !important;
}

.col_item {
  width: 100% !important;
  display: flex !important;
  flex-direction: column !important;
}

.col_item > * {
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box !important;
}

.row_3,
.row-3,
.tn-row-3 {
  display: grid !important;
  grid-template-columns: repeat(3, 1fr) !important;
  gap: 24px !important;
  width: 100% !important;
  margin-bottom: 24px !important;
  box-sizing: border-box !important;
}

.row_4,
.row-4,
.tn-row-4 {
  display: grid !important;
  grid-template-columns: repeat(4, 1fr) !important;
  gap: 20px !important;
  width: 100% !important;
  margin-bottom: 24px !important;
  box-sizing: border-box !important;
}

@media (max-width: 1024px) {
  .row_3,
  .row-3,
  .tn-row-3 {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}

@media (max-width: 768px) {
  .row_2_grid .col_item,
  .row_2_grid > div,
  .row_2_grid > p > .col_item {
    width: 100% !important;
    flex: 0 0 100% !important;
    max-width: 100% !important;
  }

  .row_3,
  .row-3,
  .tn-row-3,
  .row_4,
  .row-4,
  .tn-row-4 {
    grid-template-columns: 1fr !important;
  }
}