/* ------------------------- */
/* 1. FONT IMPORT & SETUP    */
/* ------------------------- */

@import url("https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700&display=swap");

/* ------------------------- */
/* 2. THEME VARIABLES        */
/* ------------------------- */

:root {
  /* Typography */
  --font-family: "Roboto", sans-serif;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;

  /* Sizing & Spacing */
  --border-radius: 12px;
  --spacing-unit: 8px;
  --max-content-width: 960px;

  /* Light Theme Colors (Default) */
  --color-primary: #1a73e8;
  --color-primary-variant: #1765cc;
  --color-on-primary: #ffffff;

  --color-background: #f8f9fa;
  --color-surface: #ffffff;
  --color-on-surface: #202124;
  --color-on-surface-secondary: #5f6368;
  --color-border: #dadce0;

  /* Effects */
  --shadow-elevation-1:
    0 1px 2px 0 rgba(0, 0, 0, 0.1), 0 1px 3px 1px rgba(0, 0, 0, 0.08);
  --shadow-elevation-2: 0 8px 24px rgba(26, 115, 232, 0.15);
  --transition-speed: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme Overrides */
[data-theme="dark"] {
  --color-primary: #8ab4f8;
  --color-primary-variant: #9ac0f9;
  --color-on-primary: #202124;

  --color-background: #202124;
  --color-surface: #303134;
  --color-on-surface: #e8eaed;
  --color-on-surface-secondary: #bdc1c6;
  --color-border: #5f6368;

  --shadow-elevation-1:
    0 1px 2px 0 rgba(0, 0, 0, 0.3), 0 1px 3px 1px rgba(0, 0, 0, 0.25);
  --shadow-elevation-2: 0 8px 24px rgba(0, 0, 0, 0.45);
}

/* ------------------------- */
/* 3. GLOBAL STYLES & RESETS */
/* ------------------------- */

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

body {
  font-family: var(--font-family);
  background-color: var(--color-background);
  color: var(--color-on-surface);
  line-height: 1.6;
  transition:
    background-color var(--transition-speed),
    color var(--transition-speed);
}

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

ul {
  list-style: none;
  padding-left: 0;
}

p {
  color: var(--color-on-surface-secondary);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

h1,
h2,
h3 {
  font-weight: var(--font-weight-medium);
  color: var(--color-on-surface);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

h1 {
  font-size: clamp(2.25rem, 3vw, 3rem);
}

h2 {
  font-size: clamp(1.75rem, 2.5vw, 2.25rem);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-speed);
}

a:hover,
a:focus-visible {
  color: var(--color-primary-variant);
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* Layout Container */
.container {
  max-width: var(--max-content-width);
  margin: 0 auto;
  padding: calc(var(--spacing-unit) * 6) calc(var(--spacing-unit) * 4);
}

/* ------------------------- */
/* 4. COMPONENT STYLES       */
/* ------------------------- */

/* Theme Toggle */
#theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10;
  background-color: var(--color-surface);
  color: var(--color-on-surface);
  border: 1px solid var(--color-border);
  padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 2);
  border-radius: 999px;
  cursor: pointer;
  box-shadow: var(--shadow-elevation-1);
  transition:
    background-color var(--transition-speed),
    color var(--transition-speed),
    transform var(--transition-speed);
}

#theme-toggle:hover {
  transform: translateY(-2px);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: calc(var(--spacing-unit) * 1.75) calc(var(--spacing-unit) * 3);
  border: none;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition:
    background-color var(--transition-speed),
    box-shadow var(--transition-speed),
    color var(--transition-speed);
  background-color: transparent;
  color: var(--color-primary);
  box-shadow: var(--shadow-elevation-1);
}

.btn:hover,
.btn:focus-visible {
  box-shadow: var(--shadow-elevation-2);
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-primary-variant);
}

/* Hero */
.hero {
  display: grid;
  gap: calc(var(--spacing-unit) * 6);
  align-items: center;
  margin-bottom: calc(var(--spacing-unit) * 8);
}

.hero-text {
  max-width: 540px;
}

.hero-text p {
  font-size: 1.05rem;
}

.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.85rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--spacing-unit) * 2);
  margin-top: calc(var(--spacing-unit) * 3);
}

.hero-media {
  justify-self: center;
  text-align: center;
}

.hero-media img {
  width: min(320px, 60vw);
  border-radius: calc(var(--border-radius) * 1.5);
  box-shadow: var(--shadow-elevation-2);
}

.hero-media figcaption {
  font-size: 0.85rem;
  margin-top: calc(var(--spacing-unit) * 1.5);
  color: var(--color-on-surface-secondary);
}

/* Cards */
.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: calc(var(--spacing-unit) * 4);
  margin-bottom: calc(var(--spacing-unit) * 3);
  box-shadow: var(--shadow-elevation-1);
  transition:
    transform var(--transition-speed),
    box-shadow var(--transition-speed);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevation-2);
}

.card-heading {
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing-unit) * 0.5);
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.card-subtitle {
  color: var(--color-on-surface-secondary);
  font-size: 0.95rem;
}

.card ul {
  list-style: disc;
  padding-left: calc(var(--spacing-unit) * 3);
}

.card li + li {
  margin-top: calc(var(--spacing-unit) * 1.5);
}

/* Pill list */
.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: calc(var(--spacing-unit) * 2);
  margin-top: calc(var(--spacing-unit) * 2);
}

.pill-list li {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: calc(var(--spacing-unit) * 1.25) calc(var(--spacing-unit) * 2.5);
  color: var(--color-on-surface);
  box-shadow: var(--shadow-elevation-1);
  font-size: 0.95rem;
}

/* Portfolio grid */
.section-intro {
  max-width: 680px;
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: calc(var(--spacing-unit) * 3);
  margin-top: calc(var(--spacing-unit) * 4);
}

.media-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: calc(var(--spacing-unit) * 3);
  box-shadow: var(--shadow-elevation-1);
  transition:
    transform var(--transition-speed),
    box-shadow var(--transition-speed);
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing-unit) * 2);
}

.media-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevation-2);
}

.media-card figure {
  display: flex;
  flex-direction: column;
  gap: calc(var(--spacing-unit) * 1.5);
}

.media-card img {
  border-radius: calc(var(--border-radius) * 1.25);
  object-fit: cover;
  height: 220px;
}

.media-card figcaption {
  font-weight: var(--font-weight-bold);
  font-size: 1rem;
}

/* Podcast section */
.podcast-section {
  margin-top: calc(var(--spacing-unit) * 8);
}

.podcast-embeds {
  display: grid;
  gap: calc(var(--spacing-unit) * 3);
  margin-top: calc(var(--spacing-unit) * 4);
}

.podcast-embeds iframe {
  width: 100%;
}

/* CTA section */
.cta-section {
  text-align: center;
  margin-top: calc(var(--spacing-unit) * 8);
}

.cta-section p {
  margin: 0 auto calc(var(--spacing-unit) * 2);
}

.cta-section .hero-actions {
  justify-content: center;
}

/* Footer */
footer {
  margin-top: calc(var(--spacing-unit) * 8);
  text-align: center;
  padding: calc(var(--spacing-unit) * 4) 0;
  color: var(--color-on-surface-secondary);
}

/* Responsive adjustments */
@media (min-width: 900px) {
  .hero {
    grid-template-columns: 1fr auto;
  }
}

@media (max-width: 720px) {
  .container {
    padding: calc(var(--spacing-unit) * 5) calc(var(--spacing-unit) * 2.5);
  }

  #theme-toggle {
    top: 16px;
    right: 16px;
  }

  .hero {
    text-align: center;
  }

  .hero-text {
    justify-self: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .card {
    padding: calc(var(--spacing-unit) * 3);
  }

  .media-card img {
    height: auto;
  }
}