/* ===================================
   CSS RESET & BASE STYLES
   =================================== */

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

/* ===================================
   CSS VARIABLES
   =================================== */

:root {
  /* Light mode colors - Coffee shop inspired palette */
  --color-bg-primary: #fdfbf7;
  --color-bg-secondary: #f5f1eb;
  --color-text-primary: #3d2817;
  --color-text-secondary: #6b5444;
  --color-text-muted: #8c7a6b;

  --accent-primary: #c17c4a;
  --accent-secondary: #8b5a3c;
  --accent-hover: #a66a3e;

  --color-border: #e8dfd5;
  --color-shadow: rgba(61, 40, 23, 0.08);

  /* Typography */
  --font-heading: "Poppins", sans-serif;
  --font-body: "Roboto", sans-serif;

  /* Spacing scale */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  /* Border radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-full: 9999px;

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

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-primary: #1a1410;
    --color-bg-secondary: #2a2018;
    --color-text-primary: #f5f1eb;
    --color-text-secondary: #d4c4b4;
    --color-text-muted: #a89888;

    --accent-primary: #d4915f;
    --accent-secondary: #b87a4f;
    --accent-hover: #e5a575;

    --color-border: #3d2f23;
    --color-shadow: rgba(0, 0, 0, 0.3);
  }
}

/* ===================================
   TYPOGRAPHY
   =================================== */

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  min-block-size: 100svh;
  display: flex;
  flex-direction: column;
}

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

/* ===================================
   HEADER
   =================================== */

.site-header {
  background-color: var(--color-bg-primary);
  border-block-end: 1px solid var(--color-border);
  position: sticky;
  inset-block-start: 0;
  z-index: 100;
  transition: box-shadow var(--transition-base);
}

.header-container {
  max-inline-size: 1200px;
  margin-inline: auto;
  padding-block: var(--space-sm);
  padding-inline: var(--space-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--accent-primary);
  text-decoration: none;
}

.logo-icon {
  inline-size: 32px;
  block-size: 32px;
  flex-shrink: 0;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 700;
  color: var(--color-text-primary);
}

/* Navigation toggle button (mobile) */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  inline-size: 44px;
  block-size: 44px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  background-color: var(--color-bg-secondary);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

.hamburger {
  position: relative;
  inline-size: 24px;
  block-size: 2px;
  background-color: var(--color-text-primary);
  transition: background-color var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  inline-size: 24px;
  block-size: 2px;
  background-color: var(--color-text-primary);
  transition: transform var(--transition-base);
}

.hamburger::before {
  inset-block-start: -8px;
}

.hamburger::after {
  inset-block-start: 8px;
}

.nav-toggle[aria-expanded="true"] .hamburger {
  background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
  transform: translateY(-8px) rotate(-45deg);
}

/* Main navigation */
.main-nav {
  display: block;
}

.nav-list {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.nav-list a {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding-block: var(--space-xs);
  padding-inline: var(--space-sm);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-list a:hover {
  color: var(--accent-primary);
  background-color: var(--color-bg-secondary);
}

.nav-list a:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
  color: var(--accent-primary);
}

/* ===================================
   HERO SECTION
   =================================== */

main {
  flex: 1;
}

.hero {
  min-block-size: calc(100svh - 80px);
  display: flex;
  align-items: center;
  padding-block: var(--space-3xl);
  padding-inline: var(--space-md);
  background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
}

.hero-content {
  max-inline-size: 1200px;
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.hero-text {
  max-inline-size: 600px;
}

.hero-heading {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-block-end: var(--space-md);
  color: var(--color-text-primary);
  line-height: 1.1;
}

.hero-subheading {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  color: var(--color-text-secondary);
  margin-block-end: var(--space-xl);
  line-height: 1.5;
}

.cta-button {
  display: inline-block;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1.125rem;
  color: var(--color-bg-primary);
  background-color: var(--accent-primary);
  padding-block: var(--space-md);
  padding-inline: var(--space-xl);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: background-color var(--transition-base), transform var(--transition-base), box-shadow
    var(--transition-base);
  box-shadow: 0 4px 12px var(--color-shadow);
}

.cta-button:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--color-shadow);
}

.cta-button:focus-visible {
  outline: 3px solid var(--accent-primary);
  outline-offset: 4px;
}

.cta-button:active {
  transform: translateY(0);
}

/* Hero visual */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-block-size: 400px;
}

.coffee-cup-illustration {
  inline-size: 100%;
  max-inline-size: 300px;
  aspect-ratio: 1;
  z-index: 2;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* Decorative shapes */
.shape {
  position: absolute;
  z-index: 1;
  opacity: 0.6;
}

.shape-circle {
  inline-size: 200px;
  block-size: 200px;
  background: radial-gradient(circle, var(--accent-secondary) 0%, transparent 70%);
  border-radius: 50%;
  inset-block-start: 10%;
  inset-inline-end: 10%;
  animation: pulse 8s ease-in-out infinite;
}

.shape-blob {
  inline-size: 250px;
  block-size: 250px;
  background: radial-gradient(ellipse, var(--accent-primary) 0%, transparent 70%);
  border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
  inset-block-end: 15%;
  inset-inline-start: 5%;
  animation: morph 10s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.4;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.6;
  }
}

@keyframes morph {
  0%,
  100% {
    border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
  }
  50% {
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  }
}

/* ===================================
   FOOTER
   =================================== */

.site-footer {
  background-color: var(--color-bg-secondary);
  border-block-start: 1px solid var(--color-border);
  padding-block: var(--space-lg);
  padding-inline: var(--space-md);
  margin-block-start: auto;
}

.footer-container {
  max-inline-size: 1200px;
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.copyright {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

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

.footer-nav a {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding-block: var(--space-xs);
  padding-inline: var(--space-sm);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--accent-primary);
  background-color: var(--color-bg-primary);
}

.footer-nav a:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

/* Mobile navigation */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: absolute;
    inset-block-start: 100%;
    inset-inline-start: 0;
    inset-inline-end: 0;
    background-color: var(--color-bg-primary);
    border-block-end: 1px solid var(--color-border);
    box-shadow: 0 4px 12px var(--color-shadow);
    max-block-size: 0;
    overflow: hidden;
    transition: max-block-size var(--transition-slow);
  }

  .main-nav.is-open {
    max-block-size: 400px;
  }

  .nav-list {
    flex-direction: column;
    gap: 0;
    padding-block: var(--space-sm);
    padding-inline: var(--space-md);
  }

  .nav-list a {
    display: block;
    padding-block: var(--space-md);
    padding-inline: var(--space-sm);
  }
}

/* Tablet and up */
@media (min-width: 769px) {
  .hero-content {
    grid-template-columns: 1fr 1fr;
  }

  .hero-text {
    max-inline-size: none;
  }
}

/* Desktop */
@media (min-width: 1024px) {
  .header-container {
    padding-inline: var(--space-lg);
  }

  .hero {
    padding-inline: var(--space-lg);
  }

  .footer-container {
    padding-inline: var(--space-lg);
  }
}

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