/* ExposureCalc Photography Calculator Styles */
:root {
--bg-primary: #0a0f14;
--bg-secondary: #141a22;
--bg-card: #1e2630;
--text-primary: #e8eef2;
--text-secondary: #9ab0c0;
--accent: #4a90d9;
--accent-hover: #6ba0e9;
--success: #4caf50;
--warning: #ff9800;
--border-radius: 8px;
--transition: all 0.2s ease;
}

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

body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
background: var(--bg-primary);
color: var(--text-primary);
line-height: 1.6;
min-height: 100vh;
}

header {
background: var(--bg-secondary);
padding: 1rem 2rem;
border-bottom: 1px solid #2a3440;
}

header h1 {
font-size: 1.75rem;
margin-bottom: 0.25rem;
color: var(--accent);
}

header p {
color: var(--text-secondary);
font-size: 0.9rem;
}

nav {
margin-top: 0.75rem;
}

nav a {
color: var(--text-secondary);
margin-right: 1.5rem;
text-decoration: none;
font-size: 0.95rem;
}

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

main {
max-width: 1200px;
margin: 0 auto;
padding: 2rem;
}

section {
margin-bottom: 3rem;
}

h2 {
font-size: 1.5rem;
margin-bottom: 1.5rem;
color: var(--accent);
}

h3 {
font-size: 1.2rem;
margin: 1.5rem 0 1rem;
color: var(--text-primary);
}

.calculator-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 2rem;
}

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

.input-panel, .results-panel {
background: var(--bg-card);
border-radius: var(--border-radius);
padding: 1.5rem;
}

fieldset {
margin-bottom: 1.5rem;
border: 1px solid #2a3440;
border-radius: var(--border-radius);
padding: 1rem;
}

legend {
color: var(--accent);
font-weight: 600;
padding: 0 0.5rem;
}

.preset-buttons {
display: grid;
grid-template-columns: repeat(2, 1fr);
gap: 0.5rem;
margin-bottom: 1rem;
}

.light-preset {
background: var(--bg-secondary);
border: 1px solid #2a3440;
color: var(--text-primary);
padding: 0.75rem;
border-radius: var(--border-radius);
cursor: pointer;
transition: var(--transition);
}

.light-preset:hover {
background: var(--accent);
color: white;
}

.light-preset.active {
background: var(--accent);
color: white;
border-color: var(--accent-hover);
}

.custom-input {
display: flex;
flex-direction: column;
gap: 0.5rem;
}

.custom-input label {
font-size: 0.9rem;
color: var(--text-secondary);
}

.custom-input input {
background: var(--bg-secondary);
border: 1px solid #2a3440;
color: var(--text-primary);
padding: 0.5rem;
border-radius: var(--border-radius);
width: 100%;
}

.priority-options {
display: flex;
flex-direction: column;
gap: 0.75rem;
}

.priority-options label {
color: var(--text-secondary);
cursor: pointer;
}

.priority-options input[type="radio"] {
margin-right: 0.5rem;
}

.constraint-controls {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 1rem;
}

.constraint-controls label {
display: block;
font-size: 0.9rem;
margin-bottom: 0.25rem;
color: var(--text-secondary);
}

.constraint-controls select {
width: 100%;
background: var(--bg-secondary);
border: 1px solid #2a3440;
color: var(--text-primary);
padding: 0.5rem;
border-radius: var(--border-radius);
}

.primary-btn {
background: var(--accent);
color: white;
border: none;
padding: 1rem 2rem;
font-size: 1rem;
border-radius: var(--border-radius);
cursor: pointer;
width: 100%;
font-weight: 600;
transition: var(--transition);
}

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

.results-display {
background: var(--bg-secondary);
border-radius: var(--border-radius);
padding: 1rem;
margin-bottom: 1rem;
}

.results-display p {
margin: 0.5rem 0;
}

.setting-value {
font-size: 1.5rem;
font-weight: 700;
color: var(--accent);
}

.triangle-viz {
text-align: center;
margin-top: 1rem;
}

.triangle-viz svg {
max-width: 100%;
height: auto;
}

saved-container {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
gap: 1rem;
}

.saved-item {
background: var(--bg-card);
border: 1px solid #2a3440;
border-radius: var(--border-radius);
padding: 1rem;
position: relative;
}

.saved-item h4 {
color: var(--accent);
margin-bottom: 0.5rem;
}

.saved-item .remove-btn {
position: absolute;
top: 0.5rem;
right: 0.5rem;
background: none;
border: none;
color: var(--text-secondary);
cursor: pointer;
font-size: 1.2rem;
}

.saved-item .remove-btn:hover {
color: var(--warning);
}

.empty-state {
color: var(--text-secondary);
font-style: italic;
}

guide-section h3 {
color: var(--accent);
margin-top: 2rem;
}

guide-section p {
margin-bottom: 1rem;
color: var(--text-secondary);
}

footer {
text-align: center;
padding: 2rem;
margin-top: 3rem;
border-top: 1px solid #2a3440;
color: var(--text-secondary);
}

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

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

header {
padding: 1rem;
}

.preset-buttons {
grid-template-columns: 1fr;
}

.constraint-controls {
grid-template-columns: 1fr;
}
}


/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}