/* 
 * Max's Plumbing LLC - Main Stylesheet
 * Premium, Industrial, Professional Tone
 */

:root {
  /* Color Palette */
  --color-charcoal: #1a1a1a;
  --color-slate: #334155;
  --color-steel-blue: #4a6fa5;
  --color-steel-light: #e2e8f0;
  --color-white: #ffffff;
  --color-off-white: #f8fafc;
  --color-text-main: #1e293b;
  --color-text-muted: #64748b;
  --color-border: #cbd5e1;
  --color-accent: #f59e0b; /* Safety Orange/Yellow/Gold for subtle industrial highlights */

  /* Typography */
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --font-heading: 'Roboto', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;

  /* Layout */
  --container-width: 1200px;
  --header-height: 80px;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  color: var(--color-text-main);
  background-color: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s ease;
}

ul {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-charcoal);
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: 3rem; letter-spacing: -0.02em; }
h2 { font-size: 2.25rem; letter-spacing: -0.01em; }
h3 { font-size: 1.5rem; }
p { margin-bottom: var(--spacing-sm); color: var(--color-text-muted); }

/* Utility Classes */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.text-center { text-align: center; }
.text-right { text-align: right; }
.uppercase { text-transform: uppercase; letter-spacing: 0.05em; }

.section {
  padding: var(--spacing-lg) 0;
}

.bg-charcoal { background-color: var(--color-charcoal); color: var(--color-white); }
.bg-slate { background-color: var(--color-slate); color: var(--color-white); }
.bg-off-white { background-color: var(--color-off-white); }

/* Components: Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 2px;
  font-size: 0.875rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.2s ease;
}

.btn-primary {
  background-color: var(--color-steel-blue);
  color: var(--color-white);
}
.btn-primary:hover {
  background-color: #3b5a84;
}

.btn-secondary {
  background-color: transparent;
  border-color: var(--color-white);
  color: var(--color-white);
}
.btn-secondary:hover {
  background-color: var(--color-white);
  color: var(--color-charcoal);
}

.btn-outline-dark {
  background-color: transparent;
  border-color: var(--color-charcoal);
  color: var(--color-charcoal);
}
.btn-outline-dark:hover {
  background-color: var(--color-charcoal);
  color: var(--color-white);
}

/* Header & Nav */
header {
  height: var(--header-height);
  border-bottom: 1px solid var(--color-steel-light);
  display: flex;
  align-items: center;
  position: sticky;
  top: 0;
  background-color: var(--color-white);
  z-index: 1000;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 1.5rem;
  color: var(--color-charcoal);
  text-transform: uppercase;
  letter-spacing: -0.02em;
}
.logo span { color: var(--color-steel-blue); }

.nav-links {
  display: flex;
  gap: var(--spacing-md);
}

.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-slate);
}
.nav-links a:hover {
  color: var(--color-steel-blue);
}

.nav-cta {
  display: none; /* Mobile default */
}
@media (min-width: 768px) {
  .nav-cta { display: block; }
}

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
}
@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
}

/* Footer */
footer {
  background-color: var(--color-charcoal);
  color: var(--color-slate);
  padding: var(--spacing-lg) 0;
  border-top: 4px solid var(--color-steel-blue);
}
footer h4 { color: var(--color-white); font-size: 1.125rem; margin-bottom: 1rem; }
footer p, footer li { color: #94a3b8; font-size: 0.9rem; margin-bottom: 0.5rem; }
footer a:hover { color: var(--color-white); }

/* Grid System */
.grid {
  display: grid;
  gap: var(--spacing-md);
}
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}

/* Specific Aesthetic touches */
.industrial-border {
  border-left: 4px solid var(--color-steel-blue);
  padding-left: var(--spacing-sm);
}