/* ============================================
   Certain About Uncertainty - Website Styles
   Color Palette: Blue-gray + Warm Amber
   ============================================ */

/* CSS Custom Properties */
:root {
  /* Primary Colors - Blue Gray */
  --color-primary-900: #1a2a3a;
  --color-primary-800: #2d3e50;
  --color-primary-700: #3d5166;
  --color-primary-600: #4a6177;
  --color-primary-500: #5a7389;
  --color-primary-400: #7a93a9;
  --color-primary-300: #9db3c7;
  --color-primary-200: #c4d4e2;
  --color-primary-100: #e8eff5;
  --color-primary-50: #f4f7fa;

  /* Accent Colors - Warm Amber */
  --color-accent-700: #b45309;
  --color-accent-600: #d97706;
  --color-accent-500: #f59e0b;
  --color-accent-400: #fbbf24;
  --color-accent-300: #fcd34d;
  --color-accent-200: #fde68a;
  --color-accent-100: #fef3c7;

  /* Neutral Colors */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* Semantic Colors */
  --color-text: var(--color-gray-800);
  --color-text-light: var(--color-gray-600);
  --color-text-muted: var(--color-gray-500);
  --color-background: var(--color-white);
  --color-background-alt: var(--color-primary-50);
  --color-border: var(--color-gray-200);

  /* Typography */
  --font-family-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-family-serif: 'Merriweather', Georgia, 'Times New Roman', serif;

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;

  /* Layout */
  --max-width-content: 1200px;
  --max-width-text: 720px;

  /* Borders & Shadows */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 1rem;
  --border-radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

* {
  margin: 0;
  padding: 0;
}

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

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

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}

a {
  color: var(--color-primary-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-600);
}

a:focus-visible {
  outline: 2px solid var(--color-accent-500);
  outline-offset: 2px;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-serif);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-primary-900);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

p {
  margin-bottom: var(--spacing-4);
}

p:last-child {
  margin-bottom: 0;
}

.lead {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
}

/* ============================================
   Layout Components
   ============================================ */

.container {
  width: 100%;
  max-width: var(--max-width-content);
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.section {
  padding: var(--spacing-16) 0;
}

.section--alt {
  background-color: var(--color-background-alt);
}

.section--dark {
  background-color: var(--color-primary-900);
  color: var(--color-white);
}

.section--dark h2,
.section--dark h3 {
  color: var(--color-white);
}

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

.text-narrow {
  max-width: var(--max-width-text);
  margin-left: auto;
  margin-right: auto;
}

/* ============================================
   Header & Navigation
   ============================================ */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4) var(--spacing-6);
  max-width: var(--max-width-content);
  margin: 0 auto;
}

.header__logo {
  font-family: var(--font-family-serif);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary-900);
  text-decoration: none;
}

.header__logo:hover {
  color: var(--color-primary-700);
}

.nav {
  display: none;
}

.nav__list {
  display: flex;
  gap: var(--spacing-6);
  list-style: none;
}

.nav__link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-light);
  text-decoration: none;
  padding: var(--spacing-2) 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-primary-900);
  border-bottom-color: var(--color-accent-500);
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-2);
}

.nav-toggle__bar {
  width: 24px;
  height: 2px;
  background-color: var(--color-primary-900);
  transition: all var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
.mobile-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-lg);
}

.mobile-nav--open {
  display: block;
}

.mobile-nav__list {
  list-style: none;
  padding: var(--spacing-4) var(--spacing-6);
}

.mobile-nav__item {
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav__item:last-child {
  border-bottom: none;
}

.mobile-nav__link {
  display: block;
  padding: var(--spacing-4) 0;
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.mobile-nav__link:hover {
  color: var(--color-accent-600);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  border-radius: var(--border-radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent-500);
  outline-offset: 2px;
}

.btn--primary {
  background-color: var(--color-accent-600);
  color: var(--color-white);
  border-color: var(--color-accent-600);
}

.btn--primary:hover {
  background-color: var(--color-accent-700);
  border-color: var(--color-accent-700);
  color: var(--color-white);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-primary-700);
  border-color: var(--color-primary-400);
}

.btn--secondary:hover {
  background-color: var(--color-primary-100);
  border-color: var(--color-primary-600);
  color: var(--color-primary-800);
}

.btn--large {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--font-size-lg);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
  background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-primary-100) 100%);
  padding: var(--spacing-12) 0 var(--spacing-16);
}

.hero__inner {
  display: grid;
  gap: var(--spacing-10);
  align-items: center;
}

.hero__content {
  text-align: center;
}

.hero__badge {
  display: inline-block;
  padding: var(--spacing-2) var(--spacing-4);
  background-color: var(--color-accent-100);
  color: var(--color-accent-700);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--border-radius-full);
  margin-bottom: var(--spacing-4);
}

.hero__title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-4);
  color: var(--color-primary-900);
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-primary-700);
  margin-bottom: var(--spacing-6);
  font-weight: var(--font-weight-medium);
}

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-8);
  line-height: var(--line-height-relaxed);
}

.hero__cta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
  align-items: center;
}

.hero__image {
  display: flex;
  justify-content: center;
}

.hero__book-cover {
  max-width: 280px;
  box-shadow: var(--shadow-xl);
  border-radius: var(--border-radius-sm);
}

/* ============================================
   Book Info Section
   ============================================ */

.book-info {
  padding: var(--spacing-16) 0;
}

.book-info__grid {
  display: grid;
  gap: var(--spacing-8);
}

.book-info__headline {
  font-size: var(--font-size-2xl);
  color: var(--color-accent-600);
  margin-bottom: var(--spacing-6);
}

.book-info__text p {
  margin-bottom: var(--spacing-4);
  line-height: var(--line-height-relaxed);
}

/* ============================================
   Features / Framework
   ============================================ */

.features {
  padding: var(--spacing-16) 0;
}

.features__header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.features__title {
  margin-bottom: var(--spacing-4);
}

.features__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

.features__grid {
  display: grid;
  gap: var(--spacing-8);
}

.feature-card {
  background-color: var(--color-white);
  padding: var(--spacing-8);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-accent-400) 0%, var(--color-accent-600) 100%);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-4);
  color: var(--color-white);
  font-size: var(--font-size-xl);
}

.feature-card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-3);
  color: var(--color-primary-900);
}

.feature-card__description {
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
}

/* ============================================
   Social Proof / Testimonials
   ============================================ */

.testimonials {
  padding: var(--spacing-16) 0;
  background-color: var(--color-primary-900);
  color: var(--color-white);
}

.testimonials__header {
  text-align: center;
  margin-bottom: var(--spacing-12);
}

.testimonials__title {
  color: var(--color-white);
  margin-bottom: var(--spacing-4);
}

.testimonials__grid {
  display: grid;
  gap: var(--spacing-6);
}

.testimonial-card {
  background-color: rgba(255, 255, 255, 0.1);
  padding: var(--spacing-6);
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.testimonial-card__quote {
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-4);
  font-style: italic;
  color: var(--color-primary-100);
}

.testimonial-card__author {
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent-300);
}

.testimonial-card__role {
  font-size: var(--font-size-sm);
  color: var(--color-primary-300);
}

/* ============================================
   Email Signup Form
   ============================================ */

.signup-section {
  padding: var(--spacing-16) 0;
  background: linear-gradient(135deg, var(--color-primary-800) 0%, var(--color-primary-900) 100%);
  color: var(--color-white);
  text-align: center;
}

.signup-section__title {
  color: var(--color-white);
  margin-bottom: var(--spacing-4);
}

.signup-section__description {
  color: var(--color-primary-200);
  margin-bottom: var(--spacing-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.signup-form {
  max-width: 500px;
  margin: 0 auto;
}

/* Kit form styling overrides */
.formkit-form {
  background: transparent !important;
}

.formkit-form [data-style="clean"] {
  background: transparent !important;
}

/* ============================================
   Author Section
   ============================================ */

.author {
  padding: var(--spacing-16) 0;
}

.author__inner {
  display: grid;
  gap: var(--spacing-8);
  align-items: start;
}

.author__image-wrapper {
  display: flex;
  justify-content: center;
}

.author__image {
  width: 250px;
  height: 250px;
  object-fit: cover;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.author__content {
  text-align: center;
}

.author__name {
  margin-bottom: var(--spacing-2);
}

.author__title {
  font-size: var(--font-size-lg);
  color: var(--color-accent-600);
  margin-bottom: var(--spacing-6);
}

.author__bio {
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
}

.author__bio p {
  margin-bottom: var(--spacing-4);
}

.author__links {
  display: flex;
  gap: var(--spacing-4);
  justify-content: center;
  margin-top: var(--spacing-6);
}

/* ============================================
   Page Headers
   ============================================ */

.page-header {
  background: linear-gradient(135deg, var(--color-primary-100) 0%, var(--color-primary-200) 100%);
  padding: var(--spacing-12) 0;
  text-align: center;
}

.page-header__title {
  margin-bottom: var(--spacing-4);
}

.page-header__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Content Sections
   ============================================ */

.content-section {
  padding: var(--spacing-12) 0;
}

.content-section__title {
  margin-bottom: var(--spacing-6);
}

.content-section p {
  margin-bottom: var(--spacing-4);
  line-height: var(--line-height-relaxed);
}

/* ============================================
   Resource Download
   ============================================ */

.resource-card {
  background-color: var(--color-white);
  padding: var(--spacing-8);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.resource-card__icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--color-accent-400) 0%, var(--color-accent-600) 100%);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-6);
  color: var(--color-white);
  font-size: var(--font-size-2xl);
}

.resource-card__title {
  margin-bottom: var(--spacing-4);
}

.resource-card__description {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-6);
}

/* ============================================
   Video Grid
   ============================================ */

.video-grid {
  display: grid;
  gap: var(--spacing-8);
}

.video-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.video-card__embed {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
}

.video-card__embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-card__content {
  padding: var(--spacing-6);
}

.video-card__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-2);
}

.video-card__description {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

/* ============================================
   Speaking Page
   ============================================ */

.speaking-topics {
  display: grid;
  gap: var(--spacing-6);
}

.speaking-topic {
  background-color: var(--color-white);
  padding: var(--spacing-6);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent-500);
}

.speaking-topic__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-2);
  color: var(--color-primary-900);
}

.speaking-topic__audience {
  font-size: var(--font-size-sm);
  color: var(--color-accent-600);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-4);
}

.speaking-topic__description {
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
}

.demo-reel {
  max-width: 800px;
  margin: 0 auto var(--spacing-12);
}

.demo-reel__wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
}

.demo-reel__wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ============================================
   Contact Form
   ============================================ */

.contact-form {
  max-width: 500px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--spacing-6);
}

.form-group label {
  display: block;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-2);
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent-500);
  box-shadow: 0 0 0 3px var(--color-accent-100);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background-color: var(--color-primary-900);
  color: var(--color-primary-200);
  padding: var(--spacing-12) 0 var(--spacing-6);
}

.footer__inner {
  display: grid;
  gap: var(--spacing-8);
  margin-bottom: var(--spacing-8);
}

.footer__brand {
  text-align: center;
}

.footer__logo {
  font-family: var(--font-family-serif);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--spacing-4);
}

.footer__tagline {
  font-size: var(--font-size-sm);
  color: var(--color-primary-300);
}

.footer__nav {
  text-align: center;
}

.footer__nav-title {
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-4);
}

.footer__nav-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-4);
  justify-content: center;
}

.footer__nav-link {
  color: var(--color-primary-300);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__nav-link:hover {
  color: var(--color-accent-400);
}

.footer__social {
  text-align: center;
}

.footer__social-title {
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--spacing-4);
}

.footer__social-links {
  display: flex;
  gap: var(--spacing-4);
  justify-content: center;
}

.footer__social-link {
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary-200);
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  background-color: var(--color-accent-600);
  color: var(--color-white);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--spacing-6);
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-primary-400);
}

.footer__bottom a {
  color: var(--color-primary-300);
}

.footer__bottom a:hover {
  color: var(--color-accent-400);
}

/* ============================================
   Responsive Design
   ============================================ */

/* Tablet and up */
@media (min-width: 768px) {
  :root {
    --font-size-4xl: 2.75rem;
    --font-size-5xl: 3.5rem;
  }

  .nav {
    display: block;
  }

  .nav-toggle {
    display: none;
  }

  .mobile-nav {
    display: none !important;
  }

  .hero {
    padding: var(--spacing-16) 0 var(--spacing-20);
  }

  .hero__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
  }

  .hero__content {
    text-align: left;
  }

  .hero__title {
    font-size: var(--font-size-4xl);
  }

  .hero__cta {
    flex-direction: row;
    justify-content: flex-start;
  }

  .hero__book-cover {
    max-width: 320px;
  }

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

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

  .author__inner {
    grid-template-columns: auto 1fr;
    gap: var(--spacing-12);
  }

  .author__content {
    text-align: left;
  }

  .author__links {
    justify-content: flex-start;
  }

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

  .footer__inner {
    grid-template-columns: repeat(3, 1fr);
    text-align: left;
  }

  .footer__brand,
  .footer__nav,
  .footer__social {
    text-align: left;
  }

  .footer__nav-list,
  .footer__social-links {
    justify-content: flex-start;
  }
}

/* Desktop */
@media (min-width: 1024px) {
  .hero__title {
    font-size: var(--font-size-5xl);
  }

  .hero__book-cover {
    max-width: 380px;
  }

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

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

/* ============================================
   Utility Classes
   ============================================ */

.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;
}

.visually-hidden {
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }
.mb-12 { margin-bottom: var(--spacing-12); }

.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }

/* ============================================
   Animations
   ============================================ */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}