/* =========================================================================
   Till Machine UK - Main Stylesheet
   ========================================================================= */

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

:root {
  /* Colors */
  --color-primary: #0A2540;      /* Deep Blue */
  --color-primary-light: #16426B;
  --color-secondary: #0070F3;    /* Bright Blue Accent */
  --color-secondary-hover: #0051B3;
  --color-accent: #22C55E;       /* Green for positive CTAs */
  --color-accent-hover: #16A34A;
  --color-dark: #1E293B;
  --color-dark-muted: #475569;
  --color-light: #F8FAFC;
  --color-white: #FFFFFF;
  --color-border: #E2E8F0;

  /* Typography */
  --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 6rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 300ms ease-in-out;

  /* Layout */
  --container-width: 1200px;
}

@media (max-width: 768px) {
  :root {
    --spacing-lg: 1.5rem;
    --spacing-xl: 2.5rem;
    --spacing-xxl: 3.5rem;
  }
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  color: var(--color-dark);
  background-color: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a:hover {
  color: var(--color-secondary-hover);
}

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

h1 { font-size: 3rem; letter-spacing: -0.02em; }
h2 { font-size: 2.25rem; letter-spacing: -0.01em; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

@media (max-width: 768px) {
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
}
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-dark-muted);
}

/* =========================================================================
   Layout & Utilities
   ========================================================================= */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

.section-light { background-color: var(--color-light); }
.section-dark { 
  background-color: var(--color-primary); 
  color: var(--color-white);
}
.section-dark h1, .section-dark h2, .section-dark h3, .section-dark p {
  color: var(--color-white);
}
.section-dark p {
  opacity: 0.9;
}

.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(1, 1fr); }
.grid-3 { grid-template-columns: repeat(1, 1fr); }
.grid-4 { grid-template-columns: repeat(1, 1fr); }

@media (min-width: 768px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.flex { display: flex; }
.flex-column { flex-direction: column; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }

/* =========================================================================
   Components
   ========================================================================= */
/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background-color: var(--color-secondary);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  background-color: var(--color-secondary-hover);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}
.btn-accent:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* Header */
.header {
  background-color: var(--color-white);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-md) 0;
  transition: padding var(--transition-fast);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo img {
  height: 40px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-links a {
  color: var(--color-primary);
  font-weight: 500;
  font-size: 0.95rem;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--color-secondary);
}

.mobile-menu-toggle {
  display: none;
  font-size: 1.5rem;
  background: none;
  border: none;
  color: var(--color-primary);
  cursor: pointer;
}

/* Mobile Nav */
@media (max-width: 992px) {
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    gap: var(--spacing-md);
    clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
    transition: clip-path var(--transition-normal);
  }

  .nav-links.active {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }

  .mobile-menu-toggle {
    display: block;
  }
}

/* Hero Section */
.hero {
  padding: var(--spacing-xxl) 0;
  background-color: var(--color-light);
  display: flex;
  align-items: center;
}

@media (min-width: 992px) {
  .hero {
    padding: calc(var(--spacing-xxl) * 1.5) 0 var(--spacing-xxl);
  }
}

.hero-content {
  max-width: 600px;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-md);
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-lg);
}

/* Cards */
.card {
  background-color: var(--color-white);
  border-radius: 8px;
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  border: 1px solid var(--color-border);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.card-icon {
  font-size: 2.5rem;
  color: var(--color-secondary);
  margin-bottom: var(--spacing-md);
}

/* Value Props / Image text sections */
.val-prop {
  display: grid;
  gap: var(--spacing-xl);
  align-items: center;
}

@media (min-width: 992px) {
  .val-prop {
    grid-template-columns: 1fr 1fr;
  }
}

.val-prop img {
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
}

/* Footer */
.footer {
  background-color: var(--color-primary);
  color: var(--color-light);
  padding: var(--spacing-xxl) 0 var(--spacing-md);
}

.footer h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer a {
  color: var(--color-border);
  display: block;
  margin-bottom: var(--spacing-sm);
}

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

.footer p {
  color: rgba(255, 255, 255, 0.8);
}

.footer-bottom {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}