/**
 * PPC Landing Pages - Main Stylesheet
 * Shared across all campaigns
 * 
 * Uses CSS custom properties (variables) for theming
 * Modular sections for DRY principles
 */

/* ===========================
   DESIGN TOKENS & VARIABLES
   =========================== */

:root {
  /* Colors */
  --color-bg-dark: #071533;
  --color-bg-darker: #061028;
  --color-bg-card: #0c1f47;
  --color-accent: #0fd0c7;
  --color-accent-2: #2f80ff;
  --color-text: #f4f7ff;
  --color-text-muted: #b9c3d8;
  --color-gold: #f5bf03;
  --color-white: #ffffff;
  --color-danger: #ff6b6b;
  --color-success: #13ce66;
  --color-light-bg: #f8fafc;
  --color-light-text: #0c1f47;
  --color-border-light: #e8eef5;

  /* Spacing */
  --spacing-unit: 4px;
  --spacing-xs: calc(var(--spacing-unit) * 2);
  --spacing-sm: calc(var(--spacing-unit) * 4);
  --spacing-md: calc(var(--spacing-unit) * 6);
  --spacing-lg: calc(var(--spacing-unit) * 8);
  --spacing-xl: calc(var(--spacing-unit) * 10);
  --spacing-2xl: calc(var(--spacing-unit) * 15);

  /* Typography */
  --font-family: "Inter", "Segoe UI", Arial, sans-serif;
  --font-weight-normal: 400;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Sizing */
  --container-max-width: 1200px;
  --container-padding: 20px;
  
  /* Borders & Radius */
  --border-radius-sm: 8px;
  --border-radius-md: 10px;
  --border-radius-lg: 14px;
  --border-radius-full: 16px;
  --border-radius-pill: 999px;
  
  /* Shadows */
  --shadow-sm: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.15);
  --shadow-lg: 0 16px 40px rgba(0,0,0,0.25);

  /* Transitions */
  --transition-fast: 0.12s ease;
  --transition-normal: 0.2s ease;

  /* Breakpoints */
  --breakpoint-sm: 480px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 980px;
  --breakpoint-xl: 1200px;
}

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

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  font-size: 16px;
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background: 
    radial-gradient(1200px 800px at 80% -10%, rgba(47,128,255,0.35), transparent),
    radial-gradient(900px 600px at 0% 0%, rgba(15,208,199,0.25), transparent),
    var(--color-bg-dark);
  min-height: 100vh;
}

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

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

/* ===========================
   TYPOGRAPHY
   =========================== */

h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  line-height: var(--line-height-tight);
  font-weight: var(--font-weight-bold);
}

h1 {
  font-size: clamp(30px, 4vw, 48px);
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: 28px;
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: 20px;
  margin-bottom: var(--spacing-sm);
}

h4 {
  font-size: 16px;
  margin-bottom: var(--spacing-xs);
}

p {
  margin: 0 0 var(--spacing-md);
  line-height: var(--line-height-relaxed);
}

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

ul, ol {
  margin: 0 0 var(--spacing-md);
  padding-left: var(--spacing-lg);
}

li {
  margin-bottom: var(--spacing-xs);
}

small {
  font-size: 12px;
}

/* ===========================
   CONTAINER & LAYOUT
   =========================== */

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--spacing-2xl) var(--container-padding);
}

.section.compact {
  padding: var(--spacing-xl) var(--container-padding);
}

/* ===========================
   BUTTONS
   =========================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) calc(var(--spacing-sm) * 1.5);
  border-radius: var(--border-radius-sm);
  font-weight: var(--font-weight-semibold);
  border: 0;
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-normal);
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  color: #00152e;
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
  color: #00152e;
}

.btn:active {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn.secondary {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.btn.secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.btn.large {
  padding: calc(var(--spacing-sm) * 1.5) var(--spacing-lg);
  font-size: 16px;
}

.btn.small {
  padding: calc(var(--spacing-xs) * 1.5) var(--spacing-sm);
  font-size: 12px;
}

/* ===========================
   FORMS
   =========================== */

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

.form-grid.full {
  grid-template-columns: 1fr;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

label {
  font-size: 12px;
  color: var(--color-text-muted);
  font-weight: var(--font-weight-semibold);
}

input,
select,
textarea {
  background: #0a1c3f;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--color-white);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-sm);
  font-size: 14px;
  font-family: inherit;
  transition: border-color var(--transition-normal), outline-color var(--transition-normal);
}

input::placeholder,
textarea::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid rgba(15, 208, 199, 0.35);
  border-color: var(--color-accent);
  background: #0f2347;
}

textarea {
  resize: vertical;
  min-height: 90px;
}

.form-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  flex-wrap: wrap;
}

.form-notice {
  font-size: 12px;
  color: var(--color-text-muted);
}

.form-notice.error {
  color: var(--color-danger);
}

.form-notice.success {
  color: var(--color-success);
}

.consent {
  font-size: 12px;
  color: var(--color-text-muted);
  display: flex;
  gap: var(--spacing-xs);
  align-items: flex-start;
}

.consent input[type="checkbox"] {
  margin-top: 3px;
  cursor: pointer;
}

.consent a {
  color: var(--color-accent);
}

.visually-hidden {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* ===========================
   CARDS
   =========================== */

.card {
  background: linear-gradient(180deg, rgba(12, 31, 71, 0.95), rgba(8, 24, 56, 0.95));
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-full);
  padding: calc(var(--spacing-md) * 1.5);
  box-shadow: var(--shadow-lg);
}

/* ===========================
   HEADER SECTION
   =========================== */

.header {
  padding: var(--spacing-lg) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.logo img {
  height: 32px;
  width: auto;
  display: block;
}

.logo-text {
  font-weight: var(--font-weight-bold);
  font-size: 18px;
  color: var(--color-white);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.phone {
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
}

/* ===========================
   HERO SECTION
   =========================== */

.hero {
  padding: var(--spacing-2xl) 0;
}

.hero-grid {
  display: grid;
  gap: var(--spacing-2xl);
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
}

.hero h1 {
  margin-bottom: var(--spacing-md);
}

.hero p {
  color: var(--color-text-muted);
  font-size: 18px;
  margin-bottom: var(--spacing-lg);
}

.hero ul {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--spacing-lg);
  font-size: 14px;
  color: var(--color-text-muted);
}

.hero li {
  margin-bottom: var(--spacing-xs);
}

.hero li::before {
  content: "✓ ";
  color: var(--color-success);
  font-weight: bold;
  margin-right: var(--spacing-xs);
}

/* ===========================
   TRUST INDICATORS
   =========================== */

.trust {
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: var(--spacing-lg);
}

.trust-item {
  background: rgba(255, 255, 255, 0.05);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-lg);
  font-size: 13px;
  color: var(--color-text-muted);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.trust-item strong {
  display: block;
  font-size: 16px;
  color: var(--color-white);
  margin-bottom: var(--spacing-xs);
}

/* ===========================
   BENEFITS/FEATURES GRID
   =========================== */

.benefits {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: var(--spacing-lg);
}

.benefit {
  background: rgba(255, 255, 255, 0.05);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.05);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.benefit h3 {
  margin-bottom: var(--spacing-sm);
  font-size: 16px;
}

.benefit p {
  margin: 0;
  font-size: 14px;
  line-height: var(--line-height-relaxed);
}

/* Light background sections */
.section {
  background: var(--color-light-bg);
  color: var(--color-light-text);
}

.section h2 {
  color: var(--color-light-text);
  text-align: center;
}

.section p {
  color: #3d4f66;
  text-align: center;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section .benefit {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
}

.section .benefit h3 {
  color: var(--color-light-text);
}

.section .benefit p {
  color: #3d4f66;
}

/* ===========================
   CTA BAND
   =========================== */

.cta-band {
  background: 
    radial-gradient(1200px 800px at 80% -10%, rgba(47,128,255,0.35), transparent),
    radial-gradient(900px 600px at 0% 0%, rgba(15,208,199,0.25), transparent),
    var(--color-bg-dark);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--border-radius-full);
  padding: calc(var(--spacing-md) * 1.5);
  display: grid;
  gap: var(--spacing-md);
  grid-template-columns: 1.2fr 0.8fr;
  align-items: center;
}

.cta-band h3 {
  margin: 0;
  font-size: 22px;
  color: var(--color-white);
}

.cta-band p {
  margin: 0;
  color: var(--color-text-muted);
}

.cta-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* ===========================
   PILLS & BADGES
   =========================== */

.pill-list {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
  margin: var(--spacing-md) 0 0;
}

.pill {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text-muted);
  padding: 6px 10px;
  border-radius: var(--border-radius-pill);
  font-size: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

/* ===========================
   TESTIMONIALS & SOCIAL PROOF
   =========================== */

.social-proof {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: var(--spacing-lg);
}

.testimonial {
  background: rgba(255, 255, 255, 0.05);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  font-size: 14px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.section .testimonial {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  color: var(--color-light-text);
}

.testimonial strong {
  display: block;
  margin-top: var(--spacing-md);
  color: var(--color-white);
  font-weight: var(--font-weight-semibold);
}

.section .testimonial strong {
  color: var(--color-light-text);
}

/* ===========================
   CASE STUDIES
   =========================== */

.case-studies {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: var(--spacing-lg);
}

.case {
  background: rgba(255, 255, 255, 0.05);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.section .case {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  color: var(--color-light-text);
}

.case h4 {
  margin: 0 0 var(--spacing-sm);
  color: var(--color-white);
}

.section .case h4 {
  color: var(--color-light-text);
}

.case p {
  margin: 0;
  font-size: 14px;
}

.section .case p {
  color: #3d4f66;
}

/* ===========================
   FOOTER
   =========================== */

.footer {
  background: var(--color-bg-darker);
  padding: var(--spacing-2xl) 0;
  margin-top: var(--spacing-2xl);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

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

.footer a {
  color: var(--color-text-muted);
  transition: color var(--transition-normal);
}

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

.footer small {
  color: var(--color-text-muted);
  display: block;
  margin-top: var(--spacing-xs);
}

.footer strong {
  display: block;
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
  font-weight: var(--font-weight-bold);
}

/* ===========================
   RESPONSIVE DESIGN
   =========================== */

@media (max-width: 980px) {
  .hero-grid,
  .benefits,
  .social-proof,
  .case-studies,
  .trust,
  .footer-grid,
  .cta-band {
    grid-template-columns: 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .header {
    flex-direction: column;
    align-items: flex-start;
  }

  .cta-actions {
    justify-content: flex-start;
  }

  .hero h1 {
    font-size: 32px;
  }

  .section {
    padding: var(--spacing-xl) var(--container-padding);
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 16px;
  }

  .header-actions {
    flex-direction: column;
    width: 100%;
    gap: var(--spacing-sm);
  }

  .btn {
    width: 100%;
  }

  .hero {
    padding: var(--spacing-xl) 0;
  }

  .hero h1 {
    font-size: 24px;
  }

  h2 {
    font-size: 24px;
  }

  .pill-list {
    gap: var(--spacing-xs);
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 20px;
  }

  h2 {
    font-size: 18px;
  }

  .section {
    padding: var(--spacing-lg) var(--container-padding);
  }

  .form-actions {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .btn {
    width: 100%;
  }
}

/* ===========================
   UTILITY CLASSES
   =========================== */

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

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

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

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

.mt-0 { margin-top: 0; }
.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-0 { margin-bottom: 0; }
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

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