/* GramToSpoon - Ingredient conversion site - Base styles */

:root {
  --color-bg: #faf9f6;
  --color-surface: #fff;
  --color-text: #1a1a1a;
  --color-text-muted: #555;
  --color-accent: #c45c26;
  --color-accent-hover: #a04a1e;
  --color-border: #e5e2dc;
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-serif: "Fraunces", Georgia, serif;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  --radius: 10px;
  --max-width: 720px;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

/* Typography */
h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 600;
  line-height: 1.25;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}

h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 3vw, 1.5rem);
  font-weight: 600;
  margin: 2rem 0 0.75rem;
  color: var(--color-text);
}

p {
  margin: 0 0 1rem;
  color: var(--color-text-muted);
}

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

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

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.25rem;
}

@media (max-width: 360px) {
  .container {
    padding: 0.75rem 1rem;
  }
}

header {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

header a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 1.125rem;
}

header a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

main {
  padding: 2rem 0 3rem;
}

/* Calculator card */
.calc-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.75rem;
  margin-bottom: 2rem;
}

.calc-card h2 {
  margin-top: 0;
  margin-bottom: 1.25rem;
}

.calc-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-end;
  margin-bottom: 1rem;
}

.calc-group {
  flex: 1 1 140px;
  min-width: 0;
}

.calc-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 0.35rem;
}

.calc-group input,
.calc-group select {
  width: 100%;
  min-height: 44px;
  padding: 0.6rem 0.75rem;
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-surface);
  color: var(--color-text);
}

.calc-group input:focus,
.calc-group select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(196, 92, 38, 0.15);
}

.btn {
  display: inline-block;
  min-height: 44px;
  padding: 0.65rem 1.25rem;
  font-size: 1rem;
  font-family: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--color-accent);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s;
}

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

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(196, 92, 38, 0.3);
}

/* Result box */
.result-box {
  margin-top: 1.25rem;
  padding: 1rem 1.25rem;
  background: var(--color-bg);
  border-radius: 6px;
  border-left: 4px solid var(--color-accent);
}

.result-box .result-value {
  display: block;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.result-box .result-label {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* Conversion list / quick links */
.conversion-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.conversion-list li {
  margin-bottom: 0.5rem;
}

.conversion-list a {
  display: block;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

.conversion-list a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

/* Explanation block on conversion pages */
.explanation {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin: 1.5rem 0;
  box-shadow: var(--shadow);
}

/* Conversion result highlight on detail page */
.conversion-result {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-accent);
  margin: 0.5rem 0 1rem;
}

/* Breadcrumb */
.breadcrumb {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.breadcrumb a {
  color: var(--color-text-muted);
}

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

/* Footer */
footer {
  padding: 2rem 0;
  border-top: 1px solid var(--color-border);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

footer a {
  color: var(--color-text-muted);
}

footer a:hover {
  color: var(--color-accent);
}

/* Ad slots */
.ad-slot {
  margin: 1.25rem 0;
  text-align: center;
  overflow: hidden;
}

.ad-slot:empty {
  display: none;
}

/* Responsive: mobile first, then tablet and desktop */
@media (max-width: 480px) {
  .calc-row {
    flex-direction: column;
  }

  .calc-group {
    flex: 1 1 100%;
  }

  .calc-card {
    padding: 1.25rem;
  }

  main {
    padding: 1.5rem 0 2rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
    margin-top: 1.5rem;
  }

  .conversion-result {
    font-size: 1.25rem;
  }

  .explanation {
    padding: 1.25rem;
  }
}

@media (max-width: 767px) {
  header {
    padding: 1rem 0;
  }

  .conversion-list a {
    padding: 0.6rem 0;
  }
}

@media (min-width: 768px) {
  .container {
    padding: 1.25rem 1.5rem;
  }
}

/* Prevent overflow on very small screens */
html {
  overflow-x: hidden;
}

body {
  overflow-x: hidden;
}

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