/* Tea Brew Guide - Styles */

/* CSS Variables */
:root {
  --color-primary: #2d5a27;
  --color-primary-dark: #1e3d1a;
  --color-secondary: #8b4513;
  --color-accent: #d4a574;
  --color-light: #f5f1eb;
  --color-dark: #2c2c2c;
  --color-text: #333;
  --color-text-light: #666;
  --color-white: #fff;
  --color-border: #ddd;

  /* Tea type colors */
  --color-green: #4a7c4e;
  --color-white-tea: #c9b896;
  --color-oolong: #8b6914;
  --color-black: #3d2b1f;
  --color-puerh: #5c3d2e;
  --color-herbal: #9b59b6;

  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-heading: Georgia, 'Times New Roman', serif;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-light);
  margin: 0;
  padding: 0;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-dark);
  line-height: 1.3;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 1.8rem; margin-top: 0; margin-bottom: 1rem; }
h3 { font-size: 1.3rem; }
h4 { font-size: 1.1rem; }

p {
  margin: 0 0 1rem;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

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

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

/* Container */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  text-align: center;
  padding: 3rem 1rem;
}

.hero h1 {
  color: var(--color-white);
  margin: 0;
  font-size: 2.8rem;
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.hero .tagline {
  font-size: 1.2rem;
  opacity: 0.9;
  margin: 0.5rem 0 0;
}

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

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

.main-nav li {
  margin: 0;
}

.main-nav a {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  transition: all 0.2s;
}

.main-nav a:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  text-decoration: none;
}

/* Content Sections */
.content-section {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-md);
}

/* Key Points */
.key-points {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.key-point {
  background: var(--color-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  position: relative;
}

.key-icon {
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.key-point h3 {
  margin: 0 0 0.75rem;
}

.key-point p {
  margin: 0;
  color: var(--color-text-light);
}

/* Tea Types */
.tea-type {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin: 1.5rem 0;
  overflow: hidden;
}

.tea-header {
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tea-header h3 {
  margin: 0;
  color: var(--color-white);
}

.tea-header.green { background: var(--color-green); }
.tea-header.white { background: var(--color-white-tea); }
.tea-header.white h3 { color: var(--color-dark); }
.tea-header.oolong { background: var(--color-oolong); }
.tea-header.black { background: var(--color-black); }
.tea-header.puerh { background: var(--color-puerh); }
.tea-header.herbal { background: var(--color-herbal); }

.temp-badge {
  background: rgba(255,255,255,0.2);
  color: var(--color-white);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
}

.tea-header.white .temp-badge {
  background: rgba(0,0,0,0.1);
  color: var(--color-dark);
}

.tea-content {
  padding: 1.5rem;
}

.tea-info {
  display: flex;
  gap: 2rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.tea-info p {
  margin: 0;
  color: var(--color-text-light);
}

/* Brew Chart Table */
.table-wrapper {
  overflow-x: auto;
}

.brew-chart {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
}

.brew-chart th,
.brew-chart td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.brew-chart th {
  background: var(--color-light);
  font-weight: 600;
}

.brew-chart tbody tr:hover {
  background: rgba(45, 90, 39, 0.05);
}

.brew-chart a {
  font-weight: 500;
}

.green-row td:first-child { border-left: 4px solid var(--color-green); }
.white-row td:first-child { border-left: 4px solid var(--color-white-tea); }
.oolong-row td:first-child { border-left: 4px solid var(--color-oolong); }
.black-row td:first-child { border-left: 4px solid var(--color-black); }
.puerh-row td:first-child { border-left: 4px solid var(--color-puerh); }
.herbal-row td:first-child { border-left: 4px solid var(--color-herbal); }

.chart-note {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-top: 0;
}

/* Temperature Calculator */
.temp-calculator {
  background: var(--color-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 1.5rem 0;
}

.calc-row {
  display: grid;
  grid-template-columns: 140px 130px 1fr;
  gap: 1rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
  align-items: center;
}

.calc-row:last-child {
  border-bottom: none;
}

.calc-label {
  font-weight: 600;
  color: var(--color-text);
}

.calc-value {
  font-family: 'Courier New', monospace;
  font-weight: bold;
  color: var(--color-primary);
}

.calc-desc {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

.calc-tip {
  margin-top: 1rem;
  font-style: italic;
  color: var(--color-text-light);
}

/* Equipment Grid */
.equipment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.equipment-item {
  background: var(--color-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.equipment-item h3 {
  margin-top: 0;
  color: var(--color-primary-dark);
}

.product-link {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-dark);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: 0.5rem;
  transition: all 0.2s;
}

.product-link:hover {
  background: var(--color-secondary);
  color: var(--color-white);
  text-decoration: none;
}

.tip-text {
  font-style: italic;
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* Techniques */
.technique {
  margin: 2rem 0;
  padding: 1.5rem;
  background: var(--color-light);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
}

.technique h3 {
  margin-top: 0;
  color: var(--color-primary-dark);
}

.technique-steps {
  padding-left: 1.5rem;
}

.technique-steps li {
  margin-bottom: 0.75rem;
}

/* Tips Grid */
.tips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.tip {
  background: var(--color-light);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.tip h4 {
  margin: 0 0 0.5rem;
  color: var(--color-primary-dark);
}

.tip p {
  margin: 0;
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* Product Picks */
.product-picks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.product-pick {
  background: var(--color-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border: 2px solid transparent;
  transition: border-color 0.2s;
}

.product-pick:hover {
  border-color: var(--color-accent);
}

.product-pick h4 {
  margin: 0 0 0.75rem;
  color: var(--color-secondary);
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.5px;
}

.product-pick p {
  margin: 0 0 0.5rem;
}

/* Timer */
.timer-container {
  text-align: center;
  padding: 2rem;
  background: var(--color-light);
  border-radius: var(--radius-md);
  margin-top: 1.5rem;
}

.timer-select {
  margin-bottom: 1.5rem;
}

.timer-select label {
  font-weight: 600;
  margin-right: 0.5rem;
}

.timer-select select {
  padding: 0.5rem 1rem;
  font-size: 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  cursor: pointer;
}

.custom-time {
  margin-bottom: 1.5rem;
}

.custom-time.hidden {
  display: none;
}

.custom-time label {
  margin: 0 0.5rem;
}

.custom-time input {
  width: 60px;
  padding: 0.5rem;
  font-size: 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-align: center;
}

.timer-display {
  font-size: 4rem;
  font-family: 'Courier New', monospace;
  font-weight: bold;
  color: var(--color-primary);
  margin: 1rem 0;
}

.timer-display.warning {
  color: #e67e22;
}

.timer-display.done {
  color: #c0392b;
  animation: pulse 0.5s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.timer-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 1rem;
}

.timer-btn {
  padding: 0.75rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s;
}

.timer-btn.start {
  background: var(--color-primary);
  color: var(--color-white);
}

.timer-btn.start:hover {
  background: var(--color-primary-dark);
}

.timer-btn.start.running {
  background: #e67e22;
}

.timer-btn.reset {
  background: var(--color-border);
  color: var(--color-text);
}

.timer-btn.reset:hover {
  background: #ccc;
}

.timer-tip {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* Footer */
footer {
  background: var(--color-dark);
  color: var(--color-white);
  text-align: center;
  padding: 2rem 1rem;
  margin-top: 2rem;
}

footer p {
  margin: 0.5rem 0;
  opacity: 0.9;
}

.affiliate-disclosure {
  font-size: 0.85rem;
  opacity: 0.7;
  max-width: 600px;
  margin: 0.5rem auto 0;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  .hero .tagline {
    font-size: 1rem;
  }

  .main-nav ul {
    gap: 0;
  }

  .main-nav a {
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
  }

  .content-section {
    padding: 1.5rem;
    margin: 1rem 0;
  }

  h2 {
    font-size: 1.5rem;
  }

  .calc-row {
    grid-template-columns: 1fr;
    gap: 0.25rem;
    padding: 1rem 0;
  }

  .timer-display {
    font-size: 3rem;
  }

  .key-points,
  .equipment-grid,
  .tips-grid,
  .product-picks {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .tea-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .brew-chart {
    font-size: 0.85rem;
  }

  .brew-chart th,
  .brew-chart td {
    padding: 0.5rem;
  }
}

/* Print styles */
@media print {
  .main-nav,
  .timer-container,
  .product-link,
  footer {
    display: none;
  }

  .content-section {
    box-shadow: none;
    border: 1px solid #ddd;
    break-inside: avoid;
  }
}