/* ==========================================================================
   GIBSON SAFETY CONSULT - CORE DESIGN SYSTEM
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Montserrat:wght@400;500;600;700;800;900&display=swap');

:root {
  /* HSL Color System */
  --primary-navy-h: 215;
  --primary-navy-s: 48%;
  --primary-navy-l: 14%;
  --primary-navy: hsl(var(--primary-navy-h), var(--primary-navy-s), var(--primary-navy-l)); /* #111c2e */
  
  --primary-green-h: 145;
  --primary-green-s: 63%;
  --primary-green-l: 42%;
  --primary-green: hsl(var(--primary-green-h), var(--primary-green-s), var(--primary-green-l)); /* #27ad60 */
  
  --accent-orange-h: 28;
  --accent-orange-s: 95%;
  --accent-orange-l: 53%;
  --accent-orange: hsl(var(--accent-orange-h), var(--accent-orange-s), var(--accent-orange-l)); /* #f2721b */
  --accent-orange-hover: hsl(var(--accent-orange-h), var(--accent-orange-s), 45%);

  /* Light Theme Variables (Default) */
  --bg-primary: hsl(210, 40%, 98%); /* #f1f5f9 */
  --bg-secondary: hsl(0, 0%, 100%); /* #ffffff */
  --bg-card: hsl(0, 0%, 100%);
  --text-primary: hsl(222, 47%, 11%); /* #0f172a */
  --text-secondary: hsl(215, 20%, 35%); /* #334155 */
  --text-muted: hsl(215, 16%, 47%); /* #64748b */
  --border-color: hsl(214, 32%, 91%); /* #e2e8f0 */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 10px 10px -5px rgba(0,0,0,0.04);
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-shadow: 0 8px 32px 0 rgba(15, 23, 42, 0.05);

  /* Animation Timings */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout Constants */
  --header-height: 80px;
  --container-max-width: 1280px;
  --border-radius-sm: 6px;
  --border-radius-md: 12px;
  --border-radius-lg: 20px;
}

/* Dark Theme Variables */
body.dark-theme {
  --bg-primary: hsl(222, 47%, 7%); /* #0b0f19 */
  --bg-secondary: hsl(222, 47%, 10%); /* #0f1524 */
  --bg-card: hsl(222, 47%, 12%); /* #121a2e */
  --text-primary: hsl(210, 40%, 98%); /* #f1f5f9 */
  --text-secondary: hsl(215, 20%, 75%); /* #cbd5e1 */
  --text-muted: hsl(215, 16%, 55%); /* #94a3b8 */
  --border-color: hsl(222, 47%, 16%); /* #1e293b */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.25), 0 2px 4px -1px rgba(0,0,0,0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.3), 0 4px 6px -2px rgba(0,0,0,0.2);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.4), 0 10px 10px -5px rgba(0,0,0,0.3);
  --glass-bg: rgba(15, 23, 42, 0.75);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

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

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

html {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Typography Custom Definitions */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); font-weight: 900; }
h2 { font-size: clamp(2rem, 3.5vw, 2.75rem); position: relative; margin-bottom: 2.5rem; }
h3 { font-size: clamp(1.25rem, 2vw, 1.75rem); }
h4 { font-size: 1.15rem; }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--border-radius-md);
}

ul {
  list-style: none;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: var(--border-radius-sm);
  border: 2px solid var(--bg-primary);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ==========================================================================
   GLOBAL UTILITIES
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-right: auto;
  margin-left: auto;
  padding-right: 1.5rem;
  padding-left: 1.5rem;
}

.section-padding {
  padding: clamp(4rem, 8vw, 8rem) 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem auto;
}

.section-header .subtitle {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--primary-green);
  letter-spacing: 0.15em;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
  display: block;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -0.75rem;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-green), #a7f3d0);
  border-radius: 2px;
}

.flex { display: flex; }
.grid { display: grid; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-green) 0%, hsl(var(--primary-green-h), var(--primary-green-s), 35%) 100%);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.05);
  box-shadow: 0 4px 14px rgba(39, 173, 96, 0.2);
}
.btn-primary::after {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: linear-gradient(135deg, hsl(var(--primary-green-h), var(--primary-green-s), 48%) 0%, var(--primary-green) 100%);
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition-normal);
}
.btn-primary:hover::after {
  opacity: 1;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(39, 173, 96, 0.45);
}

.btn-accent {
  background: var(--accent-orange);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(242, 114, 27, 0.4);
}
.btn-accent:hover {
  background: var(--accent-orange-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(242, 114, 27, 0.6);
}

.btn-outline {
  border: 2px solid var(--primary-green);
  color: var(--primary-green);
  font-weight: 700;
}
body.dark-theme .btn-outline {
  border-color: var(--primary-green);
  color: var(--primary-green);
}
.btn-outline:hover {
  background: var(--primary-green);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(39, 173, 96, 0.25);
}
body.dark-theme .btn-outline:hover {
  background: var(--primary-green);
  color: var(--bg-primary);
  box-shadow: 0 6px 20px rgba(39, 173, 96, 0.25);
}

/* Custom Alert Banner */
.safety-alert-bar {
  display: none; /* Hidden per user request */
  background: linear-gradient(90deg, var(--primary-navy) 0%, hsl(var(--primary-navy-h), var(--primary-navy-s), 8%) 100%);
  border-bottom: 3px solid var(--accent-orange);
  color: #fff;
  font-size: 0.8rem;
  padding: 0.6rem 0;
  text-align: center;
  font-weight: 500;
  letter-spacing: 0.05em;
  position: relative;
  z-index: 1001;
}
.safety-alert-bar .alert-badge {
  background: var(--accent-orange);
  color: #fff;
  padding: 0.2rem 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  border-radius: var(--border-radius-sm);
  margin-right: 0.5rem;
  display: inline-block;
  animation: pulse-alert 2rem infinite;
}

/* ==========================================================================
   SCROLL INTERSECT ANIMATIONS
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.reveal-left.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.reveal-right.active {
  opacity: 1;
  transform: translateX(0);
}

/* Keyframes */
@keyframes pulse-alert {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.85; transform: scale(0.98); }
}

@keyframes infinite-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}