/* Steve Monas Author Website - Main Styles */
/* Mobile-first, WCAG 2.1 AA accessible */

/* ========== CSS Variables ========== */
:root {
  /* Colors */
  --ocean-deep: #1a5276;
  --ocean-mid: #2980b9;
  --ocean-light: #5dade2;
  --sand-warm: #f4d03f;
  --sand-light: #f9e79f;
  --white: #ffffff;
  --off-white: #fafafa;
  --gray-light: #ecf0f1;
  --gray-mid: #bdc3c7;
  --charcoal: #2c3e50;
  --charcoal-light: #34495e;
  
  /* Typography */
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;
  
  /* Sizing */
  --max-width: 1200px;
  --border-radius: 8px;
  
  /* Transitions */
  --transition: 0.3s ease;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--charcoal);
  background-color: var(--white);
}

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

a {
  color: var(--ocean-mid);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover, a:focus {
  color: var(--ocean-deep);
  text-decoration: underline;
}

/* Focus styles for accessibility */
a:focus, button:focus, input:focus, textarea:focus, select:focus {
  outline: 3px solid var(--sand-warm);
  outline-offset: 2px;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--ocean-deep);
  color: var(--white);
  padding: var(--space-sm) var(--space-md);
  z-index: 1000;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 0;
}

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--charcoal);
  margin-bottom: var(--space-md);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

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

.lead {
  font-size: 1.25rem;
  color: var(--charcoal-light);
}

/* ========== Layout ========== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-xl) 0;
}

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

.section--ocean {
  background-color: var(--ocean-deep);
  color: var(--white);
}

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

/* Grid */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }
.grid--4 { grid-template-columns: 1fr; }

@media (min-width: 600px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

/* ========== Header & Navigation ========== */
.header {
  background: var(--white);
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ocean-deep);
}

.logo:hover {
  text-decoration: none;
  color: var(--ocean-mid);
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav__toggle span {
  width: 25px;
  height: 3px;
  background: var(--charcoal);
  transition: var(--transition);
}

.nav__menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--white);
  box-shadow: 0 5px 10px rgba(0,0,0,0.1);
  padding: var(--space-md);
}

.nav__menu.active {
  display: block;
}

.nav__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.nav__link {
  display: block;
  padding: var(--space-sm);
  color: var(--charcoal);
  font-weight: 500;
  transition: color var(--transition);
}

.nav__link:hover, .nav__link.active {
  color: var(--ocean-mid);
  text-decoration: none;
}

@media (min-width: 768px) {
  .nav__toggle {
    display: none;
  }
  
  .nav__menu {
    display: block;
    position: static;
    box-shadow: none;
    padding: 0;
  }
  
  .nav__list {
    flex-direction: row;
    gap: var(--space-lg);
  }
}

/* ========== Hero Section ========== */
.hero {
  background: linear-gradient(135deg, var(--ocean-deep) 0%, var(--ocean-mid) 100%);
  color: var(--white);
  padding: var(--space-xl) 0;
  text-align: center;
  min-height: 60vh;
  display: flex;
  align-items: center;
}

.hero h1 {
  color: var(--white);
  margin-bottom: var(--space-md);
}

.hero__tagline {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-style: italic;
  opacity: 0.95;
  margin-bottom: var(--space-lg);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
}

/* ========== Buttons ========== */
.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

.btn--primary {
  background: var(--sand-warm);
  color: var(--charcoal);
  border-color: var(--sand-warm);
}

.btn--primary:hover {
  background: var(--sand-light);
  border-color: var(--sand-light);
  color: var(--charcoal);
}

.btn--secondary {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}

.btn--secondary:hover {
  background: var(--white);
  color: var(--ocean-deep);
}

.btn--outline {
  background: transparent;
  color: var(--ocean-mid);
  border-color: var(--ocean-mid);
}

.btn--outline:hover {
  background: var(--ocean-mid);
  color: var(--white);
}

/* ========== Cards ========== */
.card {
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.card__image {
  aspect-ratio: 3/4;
  background: var(--gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-mid);
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card__content {
  padding: var(--space-md);
}

.card__category {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ocean-mid);
  margin-bottom: var(--space-xs);
}

.card__title {
  font-size: 1.125rem;
  margin-bottom: var(--space-sm);
}

.card__description {
  font-size: 0.9rem;
  color: var(--charcoal-light);
  margin-bottom: var(--space-md);
}

/* ========== Book Cards ========== */
.book-card {
  display: flex;
  flex-direction: column;
}

.book-card__cover {
  aspect-ratio: 2/3;
  background: linear-gradient(135deg, var(--ocean-light) 0%, var(--ocean-deep) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md);
  text-align: center;
}

.book-card__cover-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--white);
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.book-card__info {
  padding: var(--space-md);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.book-card__actions {
  margin-top: auto;
  display: flex;
  gap: var(--space-sm);
}

/* ========== Newsletter ========== */
.newsletter {
  background: var(--ocean-deep);
  color: var(--white);
  padding: var(--space-lg);
  border-radius: var(--border-radius);
  text-align: center;
}

.newsletter h3 {
  color: var(--white);
}

.newsletter__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 500px;
  margin: var(--space-md) auto 0;
}

.newsletter__input {
  padding: var(--space-sm) var(--space-md);
  font-size: 1rem;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  font-family: var(--font-body);
}

.newsletter__input:focus {
  border-color: var(--sand-warm);
}

@media (min-width: 600px) {
  .newsletter__form {
    flex-direction: row;
  }
  
  .newsletter__input {
    flex-grow: 1;
  }
}

/* ========== About Section ========== */
.about-preview {
  display: grid;
  gap: var(--space-lg);
  align-items: center;
}

.about-preview__image {
  aspect-ratio: 1;
  background: var(--gray-light);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-mid);
  font-size: 3rem;
}

@media (min-width: 768px) {
  .about-preview {
    grid-template-columns: 1fr 2fr;
  }
}

/* ========== Footer ========== */
.footer {
  background: var(--charcoal);
  color: var(--gray-light);
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer__grid {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer h4 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: var(--space-md);
}

.footer a {
  color: var(--gray-light);
}

.footer a:hover {
  color: var(--sand-warm);
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: var(--space-sm);
}

.footer__social {
  display: flex;
  gap: var(--space-md);
}

.footer__social a {
  font-size: 1.5rem;
}

.footer__bottom {
  margin-top: var(--space-lg);
  padding-top: var(--space-md);
  border-top: 1px solid var(--charcoal-light);
  text-align: center;
  font-size: 0.875rem;
}

/* ========== Contact Form ========== */
.form {
  max-width: 600px;
}

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

.form__label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.form__input,
.form__textarea,
.form__select {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-size: 1rem;
  font-family: var(--font-body);
  border: 2px solid var(--gray-mid);
  border-radius: var(--border-radius);
  transition: border-color var(--transition);
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  border-color: var(--ocean-mid);
}

.form__textarea {
  min-height: 150px;
  resize: vertical;
}

/* ========== Page Headers ========== */
.page-header {
  background: linear-gradient(135deg, var(--ocean-deep) 0%, var(--ocean-mid) 100%);
  color: var(--white);
  padding: var(--space-xl) 0;
  text-align: center;
}

.page-header h1 {
  color: var(--white);
  margin-bottom: var(--space-sm);
}

.page-header__subtitle {
  font-size: 1.25rem;
  opacity: 0.9;
}

/* ========== Blog ========== */
.blog-card {
  display: flex;
  flex-direction: column;
}

.blog-card__image {
  aspect-ratio: 16/9;
  background: var(--gray-light);
}

.blog-card__meta {
  font-size: 0.875rem;
  color: var(--charcoal-light);
  margin-bottom: var(--space-sm);
}

/* ========== Resources ========== */
.resource-card {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.resource-card__icon {
  font-size: 2rem;
  color: var(--ocean-mid);
}

.resource-card__title {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.resource-card__description {
  font-size: 0.9rem;
  color: var(--charcoal-light);
  margin-bottom: var(--space-sm);
}

/* ========== Category Filter ========== */
.filter {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.filter__btn {
  padding: var(--space-xs) var(--space-md);
  background: var(--gray-light);
  border: none;
  border-radius: 20px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition);
}

.filter__btn:hover,
.filter__btn.active {
  background: var(--ocean-mid);
  color: var(--white);
}

/* ========== Utility Classes ========== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

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

/* 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;
  }
  
  html {
    scroll-behavior: auto;
  }
}