/*
 * Domain-Driven Design Landing Page Styles
 * A responsive stylesheet for Stefan Priebsch's DDD landing page
 */

/* ===== Base Styles ===== */
:root {
  /* Color palette - adjust to match thephp.cc branding */
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --accent-color: #e74c3c;
  --text-color: #333333;
  --light-text: #ffffff;
  --light-bg: #f8f9fa;
  --dark-bg: #2c3e50;
  --border-color: #dddddd;

  /* Typography */
  --body-font: 'Open Sans', Arial, sans-serif;
  --heading-font: 'Montserrat', Arial, sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 5rem;

  /* Container width */
  --container-width: 1200px;

  /* Border radius */
  --border-radius: 4px;
}

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

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

body {
  font-family: var(--body-font);
  line-height: 1.6;
  color: var(--text-color);
}

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

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--accent-color);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--heading-font);
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
  color: var(--secondary-color);
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
  text-align: center;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--spacing-sm);
}

ul {
  list-style-position: inside;
  margin-bottom: var(--spacing-sm);
}

article.blog-post {
  margin-bottom: var(--spacing-lg);
}

article.blog-post h1 {
  margin-top: var(--spacing-lg);
}

section {
  padding: var(--spacing-lg) 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Ensure containers within sections can still use their own flex properties */
section > .container {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Mobile viewport height adjustment - use dynamic viewport height if supported */
@supports (height: 100dvh) {
  section {
    min-height: 100dvh;
  }
}

.container {
  width: 90%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.section-intro {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-lg);
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: #2980b9;
  color: var(--light-text);
}

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

.btn-secondary:hover {
  background-color: #1a252f;
  color: var(--light-text);
}

.btn-text {
  color: var(--primary-color);
  padding: 0;
  background: none;
}

.btn-text:hover {
  color: var(--accent-color);
  text-decoration: underline;
}

/* ===== Header & Navigation ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--light-text);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  padding: var(--spacing-sm) 0;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  max-width: 150px;
}

.main-nav {
  display: none; /* Hidden on mobile, shown with JS toggle */
  align-items: center; /* Ensures vertical centering when displayed */
}

.main-nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  align-items: center;
}

.main-nav li {
  margin-left: var(--spacing-md);
  display: flex;
  align-items: center;
}

.main-nav a {
  color: var(--secondary-color);
  font-weight: 600;
}

.main-nav a.btn-primary {
  color: var(--light-text);
}

/* Removed custom styling for nav buttons to make them consistent with other primary buttons */

.mobile-menu-toggle {
  display: block;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--secondary-color);
  margin: 5px 0;
  transition: all 0.3s ease;
}

/* ===== Hero Section ===== */
.hero {
  padding-top: calc(var(--spacing-lg) * 2);
  background-color: var(--light-bg);
}

.hero .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-content {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.hero h1 {
  margin-bottom: var(--spacing-sm);
}

.subheadline {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
}

.cta-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  align-items: center;
}

.hero-video {
  width: 100%;
  max-width: 600px;
}

.video-container {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  height: 0;
  overflow: hidden;
  border-radius: var(--border-radius);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.video-container img,
.video-container iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: rgba(0, 0, 0, 0.7);
  border: none;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

.play-button svg {
  fill: var(--light-text);
  width: 24px;
  height: 24px;
}

.play-button:hover {
  background-color: var(--primary-color);
}

/* ===== Expert Profile Section ===== */
.expert-profile .container {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.expert-photo {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  overflow: hidden;
  margin-bottom: var(--spacing-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  position: relative;
}

.expert-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  position: absolute;
  top: 0;
  left: 0;
}

.expert-bio {
  text-align: center;
}

.credentials {
  margin: var(--spacing-md) 0;
}

.credentials ul {
  list-style-type: none;
}

/* ===== What is DDD Section ===== */
.what-is-ddd {
  background-color: var(--light-bg);
}

.ddd-concepts {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.concept-card {
  background-color: var(--light-text);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  text-align: center;
}

.concept-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-sm);
}

.ddd-benefits {
  background-color: var(--light-text);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.benefits-list li {
  margin-bottom: var(--spacing-xs);
}

.what-is-ddd .btn {
  display: block;
  margin: 0 auto;
}

/* ===== Training Offerings Section ===== */
.featured-courses {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.course-card {
  background-color: var(--light-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.course-details {
  margin: var(--spacing-md) 0;
}

.modeling-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin: var(--spacing-md) 0;
}

.modeling-card {
  background-color: var(--light-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.in-house-training {
  background-color: var(--light-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  margin-top: var(--spacing-lg);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* ===== Consulting Services Section ===== */
.consulting {
  background-color: var(--light-bg);
}

.expertise-areas {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.expertise-card {
  background-color: var(--light-text);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.process-steps {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.step-number {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--primary-color);
  color: var(--light-text);
  font-weight: bold;
  margin-bottom: var(--spacing-sm);
}

.consulting-process {
  background-color: var(--light-text);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  text-align: center;
}

/* ===== Testimonials Section ===== */
.testimonial-slider {
  margin-bottom: var(--spacing-lg);
}

.testimonial {
  background-color: var(--light-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

blockquote {
  font-style: italic;
  position: relative;
  padding-left: var(--spacing-md);
}

blockquote::before {
  content: '"';
  font-size: 3rem;
  position: absolute;
  left: 0;
  top: -20px;
  color: var(--primary-color);
  opacity: 0.3;
}

cite {
  display: block;
  font-style: normal;
  font-weight: bold;
  margin-top: var(--spacing-sm);
  text-align: right;
}

.success-story {
  background-color: var(--light-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.client-logos {
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.client-logos h3 {
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.logo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  align-items: center;
  justify-items: center;
}

.logo-grid img {
  max-width: 120px;
  filter: grayscale(100%);
  opacity: 0.7;
  transition: all 0.3s ease;
}

.logo-grid img:hover {
  filter: grayscale(0);
  opacity: 1;
}

/* ===== Blog Post Styles ===== */
.blog-post {
  padding-top: calc(var(--spacing-lg) * 2);
}

.blog-header {
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.author-message {
  background-color: var(--primary-color);
  color: var(--light-text);
  padding: var(--spacing-sm);
  border-radius: var(--border-radius);
  margin: var(--spacing-md) 0;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  border-left: 5px solid var(--border-color);
  border-right: 5px solid var(--border-color);
  font-weight: 500;
  line-height: 1.4;
  display: flex;
  align-items: center;
}

.author-message p {
  margin-bottom: 0 !important;
  padding-bottom: 0;
}

.author-message a {
  color: var(--light-text);
  text-decoration: underline;
  font-weight: bold;
}

.author-message a:hover {
  color: var(--light-bg);
}

.blog-meta {
  color: #666;
  font-style: italic;
  margin-bottom: var(--spacing-md);
}

.blog-mood-image {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.mood-icon {
  width: 80px;
  height: 80px;
  transition: transform 0.3s ease;
}

.mood-icon:hover {
  transform: scale(1.1);
}

.blog-content {
  max-width: 650px;
  margin: 0 auto;
}

.blog-content section {
  padding-bottom: var(--spacing-md);
}

.blog-content h2 {
  text-align: left;
  margin-bottom: var(--spacing-md);
}

.blog-content h3 {
  margin-top: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.blog-content p {
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.concept {
  margin-bottom: var(--spacing-md);
}

.benefits-list {
  margin-left: var(--spacing-md);
}

.blog-cta {
  background-color: var(--light-bg);
  border-radius: var(--border-radius);
  padding: 0 var(--spacing-md) var(--spacing-md) var(--spacing-md);
  margin-top: 0 var(--spacing-md) var(--spacing-md) var(--spacing-md);
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.blog-cta h3 {
  margin-bottom: var(--spacing-sm);
}

.blog-cta p {
  margin-bottom: var(--spacing-md);
}

/* About the author box */
.about-the-author {
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--light-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing-sm) var(--spacing-md);
  margin: var(--spacing-md) 0;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* You might also like section */
.you-might-also-like {
   margin-bottom: var(--spacing-md);
}

.you-might-also-like h3 {
  margin-bottom: var(--spacing-sm);
  color: var(--secondary-color);
}

.related-posts {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

.related-posts li {
  margin-bottom: var(--spacing-xs);
  padding-left: 1rem;
}

.related-posts li::before {
  content: "\25B8";
  color: var(--primary-color);
  padding-right: 0.5rem;
}

.related-posts a {
  color: var(--primary-color);
  font-weight: 500;
  transition: color 0.3s ease;
}

.related-posts a:hover {
  color: var(--accent-color);
  text-decoration: underline;
}

.author-image {
  width: 150px;
  height: 100px;
  overflow: hidden;
  margin-bottom: var(--spacing-sm);
  border-radius: 50%;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.author-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.author-content {
  text-align: center;
}

.author-content h4 {
  color: var(--secondary-color);
  margin-bottom: var(--spacing-xs);
}

.author-content p {
  font-style: italic;
  margin-bottom: 0;
}

@media (min-width: 768px) {
  .about-the-author {
    flex-direction: row;
    text-align: left;
    align-items: center;
  }

  .author-image {
    margin-right: var(--spacing-md);
    margin-bottom: 0;
  }

  .author-content {
    text-align: left;
  }
}

/* Media queries for blog post */
@media (min-width: 768px) {
  .mood-icon {
    width: 100px;
    height: 100px;
  }
}

@media (min-width: 992px) {
  .blog-content h2 {
    font-size: 1.8rem;
  }

  .blog-content h3 {
    font-size: 1.4rem;
  }
}

/* ===== Resources Section ===== */
.article-grid,
.presentation-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin: var(--spacing-md) 0;
}

.article-card,
.presentation-card,
.external-resource-card {
  background-color: var(--light-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.excerpt {
  font-style: italic;
  color: #666;
  margin: var(--spacing-sm) 0;
}

.attribution {
  font-size: 0.8rem;
  color: #666;
  margin-top: var(--spacing-sm);
}

/* ===== Newsletter Section ===== */
.newsletter {
  background-color: var(--light-bg);
}

.newsletter .container {
  display: flex;
  flex-direction: column;
}

.newsletter-content {
  margin-bottom: var(--spacing-md);
}

.newsletter-benefits {
  list-style-type: none;
  margin-bottom: var(--spacing-md);
}

.newsletter-benefits li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: var(--spacing-xs);
}

.newsletter-benefits li::before {
  content: "✓";
  color: var(--primary-color);
  position: absolute;
  left: 0;
}

.signup-form {
  background-color: var(--light-text);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.form-group {
  margin-bottom: var(--spacing-sm);
}

label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
}

input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-family: var(--body-font);
}

.checkbox {
  display: flex;
  align-items: flex-start;
}

.checkbox input {
  margin-top: 0.3rem;
  margin-right: 0.5rem;
}

.checkbox label {
  font-weight: normal;
  font-size: 0.9rem;
}

.form-note {
  font-size: 0.8rem;
  color: #666;
  margin-top: var(--spacing-sm);
  font-style: italic;
}

/* ===== Contact Section ===== */
.contact-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.contact-info {
  order: 2;
}

.contact-form {
  order: 1;
}

.contact-cta {
  order: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background-color: var(--light-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.contact-cta h3 {
  margin-bottom: var(--spacing-sm);
}

.contact-cta p {
  margin-bottom: var(--spacing-md);
}

.consultation-note {
  background-color: var(--light-bg);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  margin-top: var(--spacing-md);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* ===== Footer ===== */
.site-footer {
  background-color: var(--dark-bg);
  color: var(--light-text);
  padding: var(--spacing-lg) 0;
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer-links ul,
.social-links ul {
  list-style-type: none;
}

.footer-links a,
.social-links a,
.company-info a {
  color: var(--light-text);
  opacity: 0.8;
}

.site-footer h3 {
  color: var(--light-text);
}

.footer-links a:hover,
.social-links a:hover,
.company-info a:hover {
  opacity: 1;
  color: var(--light-text);
}

.copyright {
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
  opacity: 0.8;
}

/* ===== Media Queries ===== */
/* Tablet (768px and up) */
@media (min-width: 768px) {
  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.5rem;
  }

  .cta-buttons {
    flex-direction: row;
    justify-content: center;
  }

  .ddd-concepts,
  .expertise-areas {
    grid-template-columns: repeat(2, 1fr);
  }

  .modeling-grid,
  .article-grid,
  .presentation-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .logo-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .newsletter .container {
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-lg);
  }

  .newsletter-content,
  .newsletter-form {
    flex: 1;
  }

  .contact-content {
    flex-direction: row;
  }

  .contact-info,
  .contact-form,
  .contact-cta {
    flex: 1;
    order: initial;
  }

  .footer-content {
    grid-template-columns: repeat(3, 1fr);
  }

  .process-steps {
    flex-direction: row;
    justify-content: space-between;
  }

  .process-step {
    flex: 1;
    width: 30%;
  }
}

/* Desktop (992px and up) */
@media (min-width: 992px) {
  .mobile-menu-toggle {
    display: none;
  }

  .main-nav {
    display: flex;
  }

  .hero .container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .hero-content {
    text-align: left;
    flex: 1;
    margin-right: var(--spacing-lg);
    margin-bottom: 0;
  }

  .hero-video {
    flex: 1;
  }

  .cta-buttons {
    justify-content: center;
  }

  .expert-profile .container {
    flex-direction: row;
    text-align: left;
  }

  .expert-photo {
    margin-right: var(--spacing-lg);
    margin-bottom: 0;
  }

  .expert-bio {
    flex: 1;
    text-align: left;
  }

  .ddd-concepts {
    grid-template-columns: repeat(4, 1fr);
  }

  .featured-courses {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Large Desktop (1200px and up) */
@media (min-width: 1200px) {
  html {
    font-size: 18px;
  }
}