/* ============================================
   Tom Reynolds Author Portfolio
   Design System & Styles
   ============================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Colors - Cinematic Dark Sci-Fi */
  --color-bg-primary: #0a0f1c;
  --color-bg-secondary: #131a2b;
  --color-bg-card: #1a2236;
  --color-bg-hover: #222d45;

  --color-accent: #00d4ff;
  --color-accent-glow: rgba(0, 212, 255, 0.3);
  --color-accent-dark: #0099cc;

  --color-text-primary: #ffffff;
  --color-text-secondary: #a0aec0;
  --color-text-muted: #718096;

  --color-border: rgba(255, 255, 255, 0.1);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Outfit', var(--font-primary);

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

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

  /* Layout */
  --container-max: 1200px;
  --container-padding: var(--space-6);

  /* Borders & Shadows */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px var(--color-accent-glow);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-height: 100vh;
}

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

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

a:hover {
  color: var(--color-text-primary);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul,
ol {
  list-style: none;
}

/* ---------- Typography ---------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--text-5xl);
}

h2 {
  font-size: var(--text-4xl);
}

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

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

p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

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

/* ---------- Container ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 15, 28, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

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

.nav__logo {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.nav__logo:hover {
  color: var(--color-accent);
}

.nav__links {
  display: flex;
  gap: var(--space-8);
}

.nav__link {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  padding: var(--space-2) 0;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-text-primary);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: var(--transition-fast);
}

/* Mobile Navigation */
@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
  }

  .nav__links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-bg-secondary);
    padding: var(--space-6);
    gap: var(--space-4);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
  }

  .nav__links.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--space-24) + 60px) 0 var(--space-16);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 20% 50%, var(--color-accent-glow) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(0, 100, 150, 0.15) 0%, transparent 40%);
  pointer-events: none;
}

.hero__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  position: relative;
  z-index: 1;
}

.hero__content {
  max-width: 600px;
}

.hero__badge {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-xl);
  color: var(--color-accent);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-6);
}

.hero__title {
  font-size: clamp(var(--text-4xl), 6vw, var(--text-6xl));
  margin-bottom: var(--space-6);
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  line-height: 1.7;
}

.hero__cta {
  display: inline-flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

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

.hero__image img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  filter: drop-shadow(0 0 30px var(--color-accent-glow));
}

/* Responsive Hero */
@media (max-width: 900px) {
  .hero__container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__content {
    max-width: 100%;
    order: 1;
  }

  .hero__cta {
    justify-content: center;
  }

  .hero__image {
    order: 2;
    margin-top: var(--space-8);
  }

  .hero__image img {
    max-height: 50vh;
  }
}

@media (max-width: 600px) {
  .hero {
    text-align: center;
    padding-top: calc(var(--space-16) + 60px);
    min-height: auto;
  }

  .hero__container {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
  }

  .hero__content {
    order: 2;
  }

  .hero__image {
    order: 1;
    margin-top: 0;
  }

  .hero__image img {
    max-height: 35vh;
    max-width: 80%;
    margin: 0 auto;
  }

  .hero__cta {
    justify-content: center;
  }

  .hero__badge {
    font-size: var(--text-xs);
    padding: var(--space-1) var(--space-3);
    margin-bottom: var(--space-4);
  }

  .hero__title {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
  }

  .hero__subtitle {
    font-size: var(--text-base);
    margin-bottom: var(--space-6);
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg-primary);
}

.btn--primary:hover {
  background: var(--color-text-primary);
  color: var(--color-bg-primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn--secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 2px solid var(--color-border);
}

.btn--secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn--amazon {
  background: #ff9900;
  color: #000;
}

.btn--amazon:hover {
  background: #ffad33;
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(255, 153, 0, 0.4);
}

/* ---------- Section ---------- */
.section {
  padding: var(--space-24) 0;
}

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

.section__header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section__title {
  margin-bottom: var(--space-4);
}

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

/* ---------- Book Grid ---------- */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-8);
}

.book-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 1px solid var(--color-border);
}

.book-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: var(--color-accent);
}

.book-card__image {
  aspect-ratio: 2/3;
  overflow: hidden;
}

.book-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.book-card:hover .book-card__image img {
  transform: scale(1.05);
}

.book-card__info {
  padding: var(--space-4);
}

.book-card__title {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.book-card__series {
  font-size: var(--text-sm);
  color: var(--color-accent);
}

/* ---------- Modal ---------- */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal__overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.9);
  cursor: pointer;
}

.modal__content {
  position: relative;
  background: var(--color-bg-secondary);
  border-radius: var(--radius-xl);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  display: grid;
  grid-template-columns: 280px 1fr;
  border: 1px solid var(--color-border);
  transform: scale(0.9);
  transition: transform var(--transition-base);
}

.modal.active .modal__content {
  transform: scale(1);
}

.modal__close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-card);
  border-radius: 50%;
  color: var(--color-text-primary);
  font-size: var(--text-xl);
  z-index: 10;
  transition: all var(--transition-fast);
}

.modal__close:hover {
  background: var(--color-accent);
  color: var(--color-bg-primary);
}

.modal__image {
  padding: var(--space-6);
}

.modal__image img {
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.modal__body {
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
}

.modal__title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-2);
}

.modal__series {
  color: var(--color-accent);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-6);
}

.modal__description {
  flex: 1;
  margin-bottom: var(--space-6);
  line-height: 1.8;
}

@media (max-width: 768px) {
  .modal__content {
    grid-template-columns: 1fr;
  }

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

  .modal__image img {
    max-width: 200px;
  }
}

/* ---------- Newsletter Section ---------- */
.newsletter {
  background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-12);
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.newsletter__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
}

.newsletter__text {
  margin-bottom: var(--space-6);
}

.newsletter form {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: center;
}

.newsletter form p {
  margin: 0;
  flex: 1;
  min-width: 200px;
}

.newsletter input[type="email"] {
  width: 100%;
  padding: var(--space-4);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--text-base);
  transition: border-color var(--transition-fast);
}

.newsletter input[type="email"]:focus {
  outline: none;
  border-color: var(--color-accent);
}

.newsletter input[type="email"]::placeholder {
  color: var(--color-text-muted);
}

.newsletter button[type="submit"] {
  padding: var(--space-4) var(--space-8);
  background: var(--color-accent);
  color: var(--color-bg-primary);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.newsletter button[type="submit"]:hover {
  background: var(--color-text-primary);
  transform: translateY(-2px);
}

.newsletter label {
  display: none;
}

/* ---------- Podcasts Section ---------- */
.podcasts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

.podcast-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
  text-align: center;
}

.podcast-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
}

.podcast-card__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}

.podcast-card__logo {
  width: 100%;
  max-width: 200px;
  height: auto;
  border-radius: var(--radius-lg);
  margin: 0 auto var(--space-6);
  display: block;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.podcast-card:hover .podcast-card__logo {
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transform: scale(1.02);
}

.podcast-card__description {
  margin-bottom: var(--space-6);
}

/* ---------- About Section ---------- */
.about-content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  max-width: 800px;
  margin: 0 auto;
}

.about-content__text h2 {
  margin-bottom: var(--space-6);
}

.about-content__text p {
  font-size: var(--text-lg);
  line-height: 1.8;
}

.social-links {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  justify-content: center;
  margin-top: var(--space-8);
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-weight: 500;
  transition: all var(--transition-base);
}

.social-link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-2px);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-12) 0;
}

.footer__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  text-align: center;
}

.footer__links {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  justify-content: center;
}

.footer__link {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-accent);
}

.footer__social {
  display: flex;
  gap: var(--space-4);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--color-bg-card);
  border-radius: 50%;
  color: var(--color-text-secondary);
  transition: all var(--transition-base);
}

.footer__social-link:hover {
  background: var(--color-accent);
  color: var(--color-bg-primary);
  transform: translateY(-3px);
}

.footer__social-link svg {
  width: 20px;
  height: 20px;
}

.footer__copyright {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ---------- Page Header ---------- */
.page-header {
  padding: calc(var(--space-24) + 60px) 0 var(--space-16);
  text-align: center;
  background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
}

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

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

/* ---------- Utility Classes ---------- */
.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;
}

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

.mt-8 {
  margin-top: var(--space-8);
}

.mb-8 {
  margin-bottom: var(--space-8);
}

/* ---------- reCAPTCHA Badge Hide ---------- */
/* Google allows hiding the badge if you include the required text attribution */
.grecaptcha-badge {
  visibility: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.recaptcha-notice {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-4);
}

.recaptcha-notice a {
  color: var(--color-text-muted);
  text-decoration: underline;
}

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