/* ========================================================================== */
/*  Variables                                                                 */
/* ========================================================================== */

:root {
  /* Color palette */
  --color-background: #f5f7fb;
  --color-surface: #ffffff;
  --color-text: #121826;
  --color-text-muted: #5b6478;

  --color-primary: #163b72;         /* deep blue */
  --color-primary-soft: #e2e8f5;
  --color-accent: #1fa2a0;          /* accent teal */
  --color-success: #2f8f4e;         /* subtle green */
  --color-warning: #e8a33f;
  --color-danger: #d64545;

  --gray-50:  #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2933;
  --gray-900: #111827;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-serif: "Georgia", "Times New Roman", serif;
  --font-mono: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  --font-size-xs: 0.75rem;   /* 12px */
  --font-size-sm: 0.875rem;  /* 14px */
  --font-size-md: 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 */

  --line-height-tight: 1.2;
  --line-height-snug: 1.35;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  /* Spacing scale (0–96px) */
  --space-0: 0;
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

  /* Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 16px 40px rgba(15, 23, 42, 0.12);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-base: 180ms ease-out;
  --transition-slow: 260ms ease-out;

  /* Layout */
  --container-max-width: 1120px;
}

/* ========================================================================== */
/*  Reset / Normalize                                                         */
/* ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body,
h1,
h2,
h3,
h4,
h5,
h6,
p,
figure,
blockquote,
dl,
dd,
ul,
ol {
  margin: 0;
}

ul,
ol {
  padding-left: 1.25rem;
}

body {
  min-height: 100vh;
}

img,
video,
canvas,
svg,
picture {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  border: none;
  background: none;
  padding: 0;
  cursor: pointer;
}

textarea {
  resize: vertical;
}

[hidden] {
  display: none !important;
}

/* Remove tap highlight on mobile */

a,
button {
  -webkit-tap-highlight-color: transparent;
}

/* ========================================================================== */
/*  Base                                                                      */
/* ========================================================================== */

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  display: block;
}

/* Typography */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 600;
  line-height: var(--line-height-tight);
  color: var(--color-text);
}

h1 {
  font-size: clamp(var(--font-size-3xl), 3vw, var(--font-size-5xl));
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(var(--font-size-2xl), 2.4vw, var(--font-size-4xl));
  margin-bottom: var(--space-3);
}

h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

h4 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2);
}

h5 {
  font-size: var(--font-size-md);
  margin-bottom: var(--space-1);
}

h6 {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

p {
  margin-bottom: var(--space-3);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-muted);
}

strong {
  font-weight: 600;
}

small {
  font-size: var(--font-size-sm);
}

/* Links */

a {
  position: relative;
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* ========================================================================== */
/*  Accessibility                                                             */
/* ========================================================================== */

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Screen reader only */

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

@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;
  }
}

/* ========================================================================== */
/*  Utilities                                                                 */
/* ========================================================================== */

/* Layout */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

.section {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

.section--muted {
  background-color: var(--gray-50);
}

/* Flex helpers */

.flex {
  display: flex;
}

.inline-flex {
  display: inline-flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.flex-column {
  display: flex;
  flex-direction: column;
}

.gap-sm {
  gap: var(--space-3);
}

.gap-md {
  gap: var(--space-4);
}

.gap-lg {
  gap: var(--space-6);
}

/* Grid helpers */

.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

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

/* Alignment & text utilities */

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.text-muted {
  color: var(--color-text-muted);
}

/* Spacing utilities (subset) */

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.pt-8 { padding-top: var(--space-8); }
.pb-8 { padding-bottom: var(--space-8); }

/* ========================================================================== */
/*  Components                                                                */
/* ========================================================================== */

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-weight: 500;
  font-size: var(--font-size-sm);
  line-height: 1.2;
  letter-spacing: 0.02em;
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-fast);
}

.btn-primary {
  background-color: var(--color-primary);
  color: #fff!important;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: #102a4c;
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary-soft);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
}

.btn-ghost:hover {
  background-color: rgba(15, 23, 42, 0.04);
}

.btn[disabled],
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Form controls */

.input,
select,
textarea {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-300);
  background-color: #fff;
  font-size: var(--font-size-sm);
  line-height: 1.4;
  color: var(--color-text);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}

.input::placeholder,
textarea::placeholder {
  color: var(--gray-400);
}

.input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 1px var(--color-accent), var(--shadow-sm);
}

.input[disabled],
select[disabled],
textarea[disabled] {
  background-color: var(--gray-100);
  color: var(--gray-500);
  cursor: not-allowed;
}

label {
  display: inline-block;
  margin-bottom: 0.35rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--gray-800);
}

.form-field {
  margin-bottom: var(--space-4);
}

.form-help {
  margin-top: 0.25rem;
  font-size: var(--font-size-xs);
  color: var(--gray-500);
}

.form-error {
  margin-top: 0.25rem;
  font-size: var(--font-size-xs);
  color: var(--color-danger);
}

/* Card */

.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(15, 23, 42, 0.02);
}

.card--muted {
  background-color: #f8fafc;
}

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

.card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-1);
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.card-body {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* Badges for status / KPIs */

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: var(--radius-pill);
  padding: 0.2rem 0.6rem;
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.badge-success {
  background-color: rgba(47, 143, 78, 0.08);
  color: var(--color-success);
}

.badge-neutral {
  background-color: rgba(148, 163, 184, 0.12);
  color: var(--gray-700);
}

/* Testimonial highlight */

.quote {
  position: relative;
  padding-left: var(--space-4);
  border-left: 3px solid var(--color-accent);
  color: var(--color-text-muted);
  font-style: italic;
}

.quote::before {
  content: "\201C";
  position: absolute;
  left: -0.65rem;
  top: -0.75rem;
  font-size: 2.5rem;
  color: var(--color-accent);
  opacity: 0.2;
}

/* Simple header / nav helpers (no layout enforcement) */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background-color: rgba(245, 247, 251, 0.96);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
}

.site-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  font-size: var(--font-size-sm);
}

.nav-link {
  color: var(--gray-700);
  position: relative;
  padding-bottom: 0.1rem;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
  transition: width var(--transition-base);
}

.nav-link:hover::after,
.nav-link--active::after {
  width: 100%;
}

.nav-link--active {
  color: var(--color-primary);
}

/* Hero alignment utility */

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  align-items: center;
  gap: var(--space-8);
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

.hero-kicker {
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.hero-eyebrow {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

@media (max-width: 960px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: left;
  }
}

@media (max-width: 640px) {
  .section {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
  }

  .site-header-inner {
    height: 3.75rem;
  }
}