/* ═══════════════════════════════════════════════════════════════════════
   GuardPPC — Design System
   Inspired by ClickGuard.com · Premium PPC protection marketing site
   ═══════════════════════════════════════════════════════════════════════ */

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

/* ── CSS Custom Properties (Design Tokens) ────────────────────────────── */
:root {
  /* Brand colors */
  --ink:            #0a0d27;
  --ink-light:      #141837;
  --ink-lighter:    #1e2347;
  --navy:           #0f1340;
  --navy-light:     #1a1f5a;

  /* Accent */
  --orange:         #f97316;
  --orange-light:   #fb923c;
  --orange-dark:    #ea580c;
  --orange-glow:    rgba(249, 115, 22, 0.15);
  --purple:         #7c3aed;
  --purple-light:   #a78bfa;
  --purple-glow:    rgba(124, 58, 237, 0.12);

  /* Neutrals */
  --white:          #ffffff;
  --gray-50:        #f8fafc;
  --gray-100:       #f1f5f9;
  --gray-200:       #e2e8f0;
  --gray-300:       #cbd5e1;
  --gray-400:       #94a3b8;
  --gray-500:       #64748b;
  --gray-600:       #475569;
  --gray-700:       #334155;
  --gray-800:       #1e293b;
  --gray-900:       #0f172a;

  /* Semantic */
  --success:        #22c55e;
  --warning:        #eab308;
  --danger:         #ef4444;

  /* Typography */
  --font-sans:      'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:      'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing scale */
  --space-xs:       0.25rem;
  --space-sm:       0.5rem;
  --space-md:       1rem;
  --space-lg:       1.5rem;
  --space-xl:       2rem;
  --space-2xl:      3rem;
  --space-3xl:      4rem;
  --space-4xl:      6rem;
  --space-5xl:      8rem;

  /* Layout */
  --max-width:      1200px;
  --max-width-wide: 1400px;
  --max-width-prose: 720px;
  --header-height:  72px;

  /* Border radius */
  --radius-sm:      6px;
  --radius-md:      10px;
  --radius-lg:      16px;
  --radius-xl:      24px;
  --radius-pill:    999px;

  /* Shadows */
  --shadow-sm:      0 1px 2px rgba(0,0,0,.05);
  --shadow-md:      0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -2px rgba(0,0,0,.05);
  --shadow-lg:      0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -4px rgba(0,0,0,.05);
  --shadow-xl:      0 20px 25px -5px rgba(0,0,0,.08), 0 8px 10px -6px rgba(0,0,0,.04);
  --shadow-2xl:     0 25px 50px -12px rgba(0,0,0,.15);
  --shadow-card:    0 1px 3px rgba(0,0,0,.06), 0 10px 40px rgba(0,0,0,.04);
  --shadow-float:   0 20px 60px rgba(0,0,0,.12), 0 4px 20px rgba(0,0,0,.06);

  /* Transitions */
  --ease:           cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce:    cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration:       200ms;
  --duration-slow:  400ms;
}

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

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

body {
  font-family: var(--font-sans);
  font-weight: 400;
  line-height: 1.6;
  color: var(--gray-700);
  background: var(--white);
  overflow-x: hidden;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: 1rem;
}

ul, ol {
  list-style: none;
}

/* ── Typography ───────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  line-height: 1.7;
  color: var(--gray-600);
}

.text-gradient {
  background: linear-gradient(135deg, var(--orange), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-orange { color: var(--orange); }
.text-purple { color: var(--purple); }
.text-white  { color: var(--white); }

/* ── Layout Containers ────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-wide {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container-prose {
  max-width: var(--max-width-prose);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ── Section Spacing ──────────────────────────────────────────────────── */
.section {
  padding: var(--space-4xl) 0;
}

.section-sm {
  padding: var(--space-2xl) 0;
}

.section-lg {
  padding: var(--space-5xl) 0;
}

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

.section-dark {
  background: var(--ink);
  color: var(--white);
}

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

.section-dark p {
  color: rgba(255, 255, 255, 0.7);
}

/* ── Buttons ──────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-pill);
  transition: all var(--duration) var(--ease);
  white-space: nowrap;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--orange);
  color: var(--white);
  border-color: var(--orange);
}
.btn-primary:hover {
  background: var(--orange-dark);
  border-color: var(--orange-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35);
}

.btn-secondary {
  background: var(--ink);
  color: var(--white);
  border-color: var(--ink);
}
.btn-secondary:hover {
  background: var(--ink-light);
  border-color: var(--ink-light);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--gray-700);
  border-color: var(--gray-300);
}
.btn-ghost:hover {
  border-color: var(--gray-400);
  background: var(--gray-50);
}

.btn-white {
  background: var(--white);
  color: var(--ink);
  border-color: var(--white);
}
.btn-white:hover {
  background: var(--gray-100);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(255, 255, 255, 0.2);
}

.btn-outline-white {
  background: transparent;
  color: #ffffff !important;
  border-color: rgba(255, 255, 255, 0.3);
}
.btn-outline-white:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

.btn-lg {
  padding: 1rem 2.25rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.8125rem;
}

.btn-icon {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border-radius: 50%;
}

/* ── Cards ────────────────────────────────────────────────────────────── */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--gray-100);
  transition: all var(--duration-slow) var(--ease);
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-body {
  padding: var(--space-xl);
}

.card-flat {
  box-shadow: none;
  border: 1px solid var(--gray-200);
}

.card-glass {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

/* ── Badges / Pills ───────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.875rem;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
}

.badge-orange {
  background: var(--orange-glow);
  color: var(--orange);
}

.badge-purple {
  background: var(--purple-glow);
  color: var(--purple);
}

.badge-dark {
  background: var(--ink);
  color: var(--white);
}

.badge-outline {
  background: transparent;
  border: 1px solid var(--gray-300);
  color: var(--gray-600);
}

/* ── Eyebrow ──────────────────────────────────────────────────────────── */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--orange);
  background: var(--orange-glow);
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.02em;
}

.eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
}

/* ── Section Headers ──────────────────────────────────────────────────── */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-3xl);
}

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

.section-header p {
  font-size: 1.125rem;
  color: var(--gray-500);
}

.section-header .em {
  color: var(--orange);
}

/* ── Grid Utilities ───────────────────────────────────────────────────── */
.grid {
  display: grid;
  gap: var(--space-xl);
}

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

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

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

.flex-gap-sm { gap: var(--space-sm); }
.flex-gap-md { gap: var(--space-md); }
.flex-gap-lg { gap: var(--space-lg); }

/* ── Icon Containers ──────────────────────────────────────────────────── */
.icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.icon-box-orange {
  background: var(--orange-glow);
  color: var(--orange);
}

.icon-box-purple {
  background: var(--purple-glow);
  color: var(--purple);
}

.icon-box-dark {
  background: var(--ink-lighter);
  color: var(--white);
}

/* ── Form Elements ────────────────────────────────────────────────────── */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
  margin-bottom: var(--space-sm);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  color: var(--gray-800);
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-md);
  transition: all var(--duration) var(--ease);
  outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px var(--orange-glow);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* ── Animations ───────────────────────────────────────────────────────── */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.5; }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes marquee {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s var(--ease) both;
}

.animate-fade-in {
  animation: fadeIn 0.4s var(--ease) both;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* Stagger delays */
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

/* Scroll-triggered animations via IntersectionObserver */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Divider ──────────────────────────────────────────────────────────── */
.divider {
  border: none;
  height: 1px;
  background: var(--gray-200);
  margin: var(--space-2xl) 0;
}