/* ==========================================================================
   ZSynora Technologies — Main Stylesheet
   Modern B2B Business Automation & Digital Transformation Consulting
   ========================================================================== */

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

/* --- Design Tokens / CSS Custom Properties --- */
:root {
  /* Brand Core Colors */
  --color-primary: #2563eb;          /* Electric Blue */
  --color-primary-dark: #1d4ed8;     /* Deep Blue */
  --color-primary-light: #3b82f6;    /* Bright Blue */
  --color-primary-subtle: #eff6ff;   /* Soft Ice Blue */
  
  --color-accent-violet: #6366f1;    /* Synergy Indigo/Violet */
  --color-accent-violet-light: #e0e7ff;
  --color-accent-emerald: #10b981;   /* Growth / Success Emerald */
  --color-accent-emerald-light: #ecfdf5;
  --color-accent-amber: #f59e0b;     /* Attention / Warning Amber */

  /* Neutral Surface & Backgrounds */
  --color-bg: #f8fafc;              /* Warm / off-white clean canvas */
  --color-bg-alt: #ffffff;          /* Pure White Card Surface */
  --color-bg-subtle: #f1f5f9;       /* Light Slate Tint */
  --color-bg-dark: #0f172a;         /* Deep Slate / Midnight Black */
  --color-bg-dark-card: #1e293b;    /* Dark Card Surface */
  --color-bg-dark-subtle: #334155;

  /* Typography Colors */
  --color-text-primary: #0f172a;    /* Deep Charcoal / Near Black */
  --color-text-secondary: #475569;  /* Muted Slate Gray */
  --color-text-tertiary: #64748b;   /* Light Slate Muted */
  --color-text-inverse: #f8fafc;    /* White text on dark */
  --color-text-inverse-muted: #94a3b8;

  /* Borders & Dividers */
  --color-border: #e2e8f0;          /* Clean subtle border */
  --color-border-subtle: #edf2f7;
  --color-border-dark: #334155;
  --color-border-focus: #3b82f6;

  /* Typography Scales */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */
  --font-size-6xl: 3.75rem;   /* 60px */

  /* Line Heights */
  --lh-tight: 1.15;
  --lh-snug: 1.35;
  --lh-relaxed: 1.65;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.09), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-glow: 0 0 25px rgba(37, 99, 235, 0.15);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;

  /* Max Widths */
  --container-max: 1200px;
  --container-wide: 1320px;
  --container-narrow: 840px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: var(--lh-relaxed);
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* --- Accessibility & Focus Styles --- */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* --- Layout Containers & Grid --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.container-narrow {
  max-width: var(--container-narrow);
}

.container-wide {
  max-width: var(--container-wide);
}

.section {
  padding-top: var(--space-20);
  padding-bottom: var(--space-20);
  position: relative;
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-subtle {
  background-color: var(--color-bg-subtle);
}

.section-dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-inverse);
}

/* --- Typography Utilities --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  color: var(--color-text-primary);
  font-weight: 700;
  line-height: var(--lh-tight);
  letter-spacing: -0.025em;
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--color-text-inverse);
}

h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  margin-bottom: var(--space-4);
}

p:last-child {
  margin-bottom: 0;
}

.lead {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  line-height: var(--lh-snug);
  color: var(--color-text-secondary);
}

.section-dark p {
  color: var(--color-text-inverse-muted);
}

/* Eyebrow Label */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  padding: 4px 12px;
  background-color: var(--color-primary-subtle);
  border: 1px solid rgba(37, 99, 235, 0.15);
  border-radius: var(--radius-full);
}

.section-dark .eyebrow {
  background-color: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border-color: rgba(59, 130, 246, 0.3);
}

.eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

.section-dark .eyebrow-dot {
  background-color: #60a5fa;
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto var(--space-16);
}

.section-header.text-left {
  text-align: left;
  margin-left: 0;
}

.section-header h2 {
  margin-bottom: var(--space-4);
}

.section-header p {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
}

/* --- Common Links & Buttons --- */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  white-space: nowrap;
  line-height: 1.25;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-bg-subtle);
  border-color: #cbd5e1;
  color: var(--color-primary);
}

.btn-outline-white {
  background-color: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.25);
}

.btn-outline-white:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  color: #ffffff;
}

.btn-lg {
  padding: 0.9rem 1.85rem;
  font-size: var(--font-size-base);
  border-radius: var(--radius-md);
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
}

/* --- Badge & Tag Elements --- */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background-color: var(--color-bg-subtle);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.badge-blue {
  background-color: var(--color-primary-subtle);
  color: var(--color-primary-dark);
  border-color: rgba(37, 99, 235, 0.2);
}

/* --- Standard Grids --- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

/* Align helper */
.align-center {
  align-items: center;
}

/* --- Media Queries --- */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .section {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
  }
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .btn-group {
    flex-direction: column;
    width: 100%;
  }
  .btn-group .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}