/* ultraseo-core/assets/css/style.css
   VERSION 4.1: Ultra-Professional, Attractive, and Corrected Layout
*/

/* --- 1. DESIGN SYSTEM (VARIABLES) --- */
:root {
  /* Colors */
  --color-primary: #005a9c; /* A deep, professional blue */
  --color-primary-dark: #003d6a;
  --color-text-heading: #1a1a1a;
  --color-text-body: #333;
  --color-text-subtle: #555;
  --color-background: #f8f9fa; /* Very light, clean background */
  --color-white: #ffffff;
  --color-border: #e0e0e0;

  /* Font Stack (Lightning Fast) */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif;

  /* Spacing (8px grid) */
  --space-xs: 0.25rem; /* 4px */
  --space-sm: 0.5rem; /* 8px */
  --space-md: 1rem; /* 16px */
  --space-lg: 1.5rem; /* 24px */
  --space-xl: 2.5rem; /* 40px */
  --space-xxl: 4rem; /* 64px */

  /* Typography */
  --font-size-base: 1rem; /* 16px */
  --font-size-sm: 0.875rem; /* 14px */
  --font-size-lg: 1.125rem; /* 18px (for posts) */
  --line-height-base: 1.65;
  --line-height-heading: 1.2;

  /* Layout */
  --header-height: 70px;
  --content-width: 1140px; /* Optimal for reading */
  --grid-width: 1140px;

  /* Polish */
  --border-radius: 8px;
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 5px 15px rgba(0, 0, 0, 0.07);
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- 2. GLOBAL RESET & BASE --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--color-text-body);
  background-color: var(--color-background);
  padding-top: var(--header-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: all var(--transition-fast);
}
a:hover,
a:focus {
  color: var(--color-primary-dark);
}

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* --- 3. TYPOGRAPHY (FLUID & RESPONSIVE) --- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: var(--line-height-heading);
  color: var(--color-text-heading);
}

/* Fluid sizes that scale smoothly */
h1,
.h1 {
  font-size: clamp(2rem, 1.5rem + 2.5vw, 3.25rem); /* 32px to 52px */
  margin-bottom: var(--space-lg);
}
h2,
.h2 {
  font-size: clamp(1.75rem, 1.4rem + 1.75vw, 2.5rem); /* 28px to 40px */
  margin-top: var(--space-xxl);
  margin-bottom: var(--space-md);
}
h3,
.h3 {
  font-size: clamp(1.375rem, 1.2rem + 0.875vw, 1.75rem); /* 22px to 28px */
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

p {
  margin-bottom: var(--space-md);
}

/* --- 4. CORE LAYOUT (HEADER, CONTENT, FOOTER) --- */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: var(--color-white);
  /* Subtle, professional shadow */
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.06);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-md);
}

.main-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: var(--grid-width);
}

.logo a {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-heading);
  text-decoration: none;
  display: flex;
  align-items: center;
}
.logo img {
  height: 36px;
  width: auto;
  margin-right: var(--space-sm);
}

/* --- 5. NAVIGATION (MOBILE-FIRST) --- */
.nav-links {
  display: none;
  list-style: none;
  flex-direction: column;
  position: absolute;
  top: var(--header-height);
  left: 0;
  width: 100%;
  background: var(--color-white);
  box-shadow: var(--shadow-md);
  padding: var(--space-md);
  border-top: 1px solid var(--color-border);
}
.nav-links.active {
  display: flex;
}
.nav-links a {
  font-weight: 500;
  font-size: 1.05rem;
  padding: var(--space-sm) var(--space-md);
  display: block;
  border-radius: var(--border-radius);
  color: var(--color-text-subtle);
}
.nav-links a:hover,
.nav-links a:focus-visible {
  background-color: var(--color-background);
  color: var(--color-text-heading);
  text-decoration: none;
}

.mobile-nav-toggle {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.8rem;
  padding: var(--space-sm);
  z-index: 1001;
  color: var(--color-text-heading);
}

/* * --- PAGE LAYOUT & SPACING (CRITICAL FIX) --- 
 */

/* 1. Remove all padding from the global .site-content */
.site-content {
  /* Padding is now handled by the wrappers below */
}

/* 2. Wrapper for reading content (Posts, Author pages) */
.content-wrapper,
.post-wrapper,
.author-wrapper {
  max-width: var(--content-width); /* e.g., 740px */
  margin-left: auto;
  margin-right: auto;
  /* Fluid Padding:
       - Top/Bottom: 24px on small screens, grows to 40px on large screens.
       - Left/Right: 16px on small screens.
    */
  padding: clamp(var(--space-lg), 5vw, var(--space-xl)) var(--space-md);
}

/* 3. Wrapper for wide grids (Homepage, Category/Tag pages) */
.grid-wrapper,
.homepage-wrapper,
.category-wrapper,
.tag-wrapper {
  max-width: var(--grid-width); /* e.g., 1140px */
  margin-left: auto;
  margin-right: auto;
  /* Fluid Padding:
       - Top/Bottom: 24px on small screens, grows to 40px on large screens.
       - Left/Right: 16px on small screens.
    */
  padding: clamp(var(--space-lg), 5vw, var(--space-xl)) var(--space-md);
}

/* 4. On tablets and up, give the wrappers more side padding */
@media (min-width: 768px) {
  .content-wrapper,
  .post-wrapper,
  .author-wrapper,
  .grid-wrapper,
  .homepage-wrapper,
  .category-wrapper,
  .tag-wrapper {
    padding-left: var(--space-lg); /* 24px */
    padding-right: var(--space-lg); /* 24px */
  }
}
/* --- END PAGE LAYOUT & SPACING --- */

.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-text-heading);
  color: #adb5bd;
  padding: var(--space-xl) var(--space-md);
  text-align: center;
  font-size: var(--font-size-sm);
}
.site-footer a {
  color: var(--color-white);
  font-weight: 500;
}
.footer-nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  margin-top: var(--space-sm);
}

/* --- 6. HOMEPAGE / ARCHIVE GRIDS --- */

.archive-header {
  margin: 0 auto var(--space-xl) auto;
  text-align: center;
}
.archive-header h1 {
  margin-bottom: var(--space-sm);
}
.archive-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-subtle);
  max-width: var(--content-width);
  margin: 0 auto;
}

/* Professional Category "Tile" */
.category-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-xxl);
}
.category-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
  transition: all var(--transition-fast);
  position: relative;
  /* This is the "fresh" part: a left-accent border */
  border-left: 5px solid var(--color-primary);
  box-shadow: var(--shadow-sm);
}
.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  /* Make the accent border more prominent on hover */
  border-left-color: var(--color-primary-dark);
}
.category-card h3 {
  margin-top: 0;
  margin-bottom: var(--space-xs);
  font-size: 1.3rem;
}
.category-card h3 a {
  text-decoration: none;
  color: var(--color-text-heading);
}
/* The arrow is now part of the link */
.category-card h3 a::after {
  content: "→";
  font-weight: bold;
  color: var(--color-primary);
  margin-left: var(--space-sm);
  opacity: 0;
  transition: all var(--transition-fast);
}
.category-card:hover h3 a::after {
  opacity: 1;
}
.category-card h3 a:hover {
  color: var(--color-primary);
}
.category-card p {
  color: var(--color-text-subtle);
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* Professional Post Card */
.post-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}
.post-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
}
.post-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}
.post-card-image-link {
  display: block;
  aspect-ratio: 16 / 9;
  background-color: var(--color-background);
  border-radius: var(--border-radius) var(--border-radius) 0 0;
  overflow: hidden;
}
.post-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease-out;
}
.post-card:hover img {
  transform: scale(1.05); /* Professional zoom on hover */
}
.post-card-content {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.post-card h3 {
  margin-top: 0;
  font-size: 1.35rem;
}
.post-card h3 a {
  text-decoration: none;
  color: var(--color-text-heading);
}
.post-card h3 a:hover {
  color: var(--color-primary);
}
.post-card p {
  font-size: 1rem;
  color: var(--color-text-subtle);
  margin-bottom: var(--space-md);
  flex-grow: 1;
}
.cta-button {
  display: inline-block;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.65rem 1.25rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-decoration: none;
  align-self: flex-start;
  transition: all var(--transition-fast);
}
.cta-button:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 90, 156, 0.2);
}

/* --- 7. POSTS/POST.PHP (Professional Readability) --- */

/* The white box for the post */
.post-wrapper {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  /* We add padding here, so the wrapper itself provides the spacing */
  padding: clamp(var(--space-lg), 5vw, var(--space-xl));
}

.post-header {
  margin-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-lg);
}
.breadcrumbs {
  font-size: var(--font-size-sm);
  color: var(--color-text-subtle);
  margin-bottom: var(--space-md);
}
.breadcrumbs a {
  color: var(--color-text-subtle);
  text-decoration: none;
}
.breadcrumbs a:hover {
  color: var(--color-text-body);
}

.post-title {
  font-weight: 800; /* Bolder */
}
.post-meta-info {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-subtle);
  margin-top: var(--space-lg);
}
.author-box-inline {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.author-avatar-small {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}
.author-box-inline a {
  font-weight: 600;
  color: var(--color-text-body);
  text-decoration: none;
}
.author-box-inline a:hover {
  color: var(--color-primary);
}

.post-featured-image {
  margin-bottom: var(--space-xl);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.post-content-body {
  font-size: var(--font-size-lg); /* 18px for readability */
  color: var(--color-text-body);
  line-height: 1.75;
}
.post-content-body p,
.post-content-body ul,
.post-content-body ol {
  margin-bottom: var(--space-lg);
}
.post-content-body ul,
.post-content-body ol {
  padding-left: 30px;
}
.post-content-body blockquote {
  border-left: 4px solid var(--color-primary);
  padding-left: var(--space-lg);
  margin: var(--space-xl) 0;
  font-style: italic;
  font-size: 1.25rem;
  color: var(--color-text-subtle);
}
.post-content-body a {
  text-decoration: underline;
  text-decoration-color: var(--color-primary);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}
.post-content-body a:hover {
  background-color: #e0eaff;
  text-decoration-color: var(--color-primary-dark);
}
.post-content-body h2 {
  border-bottom: 2px solid var(--color-border);
  padding-bottom: var(--space-sm);
}
.post-content-body h3 {
  color: var(--color-text-subtle);
}

.post-video-embed {
  margin: var(--space-xl) 0;
  aspect-ratio: 16 / 9;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.post-video-embed iframe {
  width: 100%;
  height: 100%;
}

/* Post Tags Styling (Clean "Pills") */
.post-tags {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.post-tags strong {
  margin-right: var(--space-sm);
  color: var(--color-text-heading);
  font-size: 1rem;
}
.post-tags a {
  display: inline-block;
  background-color: var(--color-background);
  color: var(--color-text-subtle);
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--color-border);
  border-radius: 99px; /* Pill shape */
  font-size: var(--font-size-sm);
  text-decoration: none;
}
.post-tags a:hover {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* Internal Links (Clean Box) */
.internal-links-box {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
}
.internal-links-box h3 {
  margin-top: 0;
}
.internal-links-box ul {
  list-style: "→ ";
  padding-left: var(--space-lg);
}
.internal-links-box li {
  margin-bottom: var(--space-sm);
}
.internal-links-box li strong {
  display: none; /* Hide the (pillar) text, it's implied */
}

/* --- 8. DESKTOP & WIDESCREEN RESPONSIVENESS --- */

@media (min-width: 768px) {
  body {
    font-size: 1.0625rem; /* 17px */
  }

  /* Show desktop nav, hide burger */
  .mobile-nav-toggle {
    display: none;
  }
  .nav-links {
    display: flex;
    flex-direction: row;
    position: static;
    width: auto;
    border: none;
    padding: 0;
    box-shadow: none;
  }
  .nav-links li {
    margin: 0 var(--space-xs);
  }
  .nav-links a {
    font-size: 0.95rem;
  }

  /* Homepage Grids */
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .post-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  body {
    font-size: 1.125rem; /* 18px */
  }

  .category-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .post-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  /* For single-column post cards (like on author page) */
  .post-grid.single-column {
    grid-template-columns: 1fr;
  }
  /* A more professional post card layout on desktop */
  .post-grid.single-column .post-card {
    flex-direction: row;
    align-items: center;
  }
  .post-grid.single-column .post-card-image-link {
    flex: 0 0 300px; /* Fixed image width */
    aspect-ratio: 4 / 3;
    border-radius: var(--border-radius) 0 0 var(--border-radius);
  }

  /* Add padding to the post wrapper on desktop */
  .post-wrapper {
    padding: var(--space-xxl);
  }
}