/* ==========================================================================
   Pagevio - Base Styles
   ========================================================================== */

:root {
  /* Colors */
  --color-primary: #111827; /* Deep Navy / Anthracite */
  --color-primary-light: #1f2937;
  --color-accent: #0d9488; /* Teal / Petrol */
  --color-accent-hover: #0f766e;
  --color-accent-light: #ccfbf1;
  --color-background: #f9fafb; /* Off-White / Very Light Grey */
  --color-surface: #ffffff; /* White cards */
  --color-text-main: #374151; /* Dark Grey for text */
  --color-text-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-error: #ef4444;
  --color-success: #10b981;

  /* Typography */
  --font-family-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  --line-height-base: 1.6;
  --line-height-heading: 1.2;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Shadows & Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  /* Transitions */
  --transition-base: all 0.2s ease-in-out;
  
  /* Layout */
  --container-width: 1200px;
}

/* ==========================================================================
   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-sans);
  line-height: var(--line-height-base);
  color: var(--color-text-main);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-primary);
  line-height: var(--line-height-heading);
  font-weight: 700;
  margin-bottom: var(--space-4);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 2.5rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.5rem, 3vw, 1.75rem); }
h4 { font-size: 1.25rem; }

p { margin-bottom: var(--space-4); }
a { color: var(--color-accent); text-decoration: none; transition: var(--transition-base); }
a:hover { color: var(--color-accent-hover); }

img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* ==========================================================================
   Accessibility & Utils
   ========================================================================== */

.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;
}

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

@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;
  }
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.section {
  padding: var(--space-16) 0;
}
@media (min-width: 768px) {
  .section { padding: var(--space-24) 0; }
}

.section-bg-white { background-color: var(--color-surface); }
.section-bg-dark { background-color: var(--color-primary); color: var(--color-surface); }
.section-bg-dark h1, .section-bg-dark h2, .section-bg-dark h3 { color: var(--color-surface); }
.section-bg-dark p { color: #d1d5db; }

.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.eyebrow {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none;
  font-family: inherit;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-surface);
}
.btn-primary:hover {
  background-color: var(--color-accent-hover);
  color: var(--color-surface);
  transform: translateY(-2px);
}

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

.btn-dark {
  background-color: var(--color-primary);
  color: var(--color-surface);
}
.btn-dark:hover {
  background-color: var(--color-primary-light);
  color: var(--color-surface);
}

.btn-block {
  display: flex;
  width: 100%;
}

/* ==========================================================================
   Header & Nav
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  transition: var(--transition-base);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav__list {
  display: none;
}

@media (min-width: 992px) {
  .nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-6);
  }
  .nav__link {
    color: var(--color-text-main);
    font-weight: 500;
  }
  .nav__link:hover {
    color: var(--color-accent);
  }
  .mobile-menu-btn {
    display: none;
  }
}

.mobile-menu-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  color: var(--color-primary);
}

.mobile-menu-btn svg {
  width: 24px;
  height: 24px;
  pointer-events: none;
}

/* Mobile Nav Overlay */
.mobile-nav {
  position: fixed;
  top: 4.5rem;
  left: 0;
  width: 100%;
  height: calc(100vh - 4.5rem);
  background-color: var(--color-surface);
  padding: var(--space-6) var(--space-4);
  transform: translateX(100%);
  transition: transform 0.3s ease-in-out;
  z-index: 99;
  overflow-y: auto;
}
.mobile-nav.is-open {
  transform: translateX(0);
}
.mobile-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.mobile-nav__link {
  display: block;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  padding-top: calc(4.5rem + var(--space-16));
  padding-bottom: var(--space-16);
  background-color: var(--color-background);
}
.hero__container {
  display: grid;
  gap: var(--space-12);
}
@media (min-width: 992px) {
  .hero__container {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
  .hero {
    padding-top: calc(4.5rem + var(--space-24));
    padding-bottom: var(--space-24);
  }
}
.hero__content h1 {
  margin-bottom: var(--space-6);
}
.hero__content p {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  max-width: 540px;
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}
.hero__trust {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}
.hero__visual {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
}
.hero__visual-header {
  display: flex;
  gap: 6px;
  padding: 12px 16px;
  background-color: #f3f4f6;
  border-bottom: 1px solid var(--color-border);
}
.hero__visual-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.hero__visual-dot:nth-child(1) { background-color: #ef4444; }
.hero__visual-dot:nth-child(2) { background-color: #f59e0b; }
.hero__visual-dot:nth-child(3) { background-color: #10b981; }
.hero__visual-body {
  padding: var(--space-8) var(--space-6);
  aspect-ratio: 4/3;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.hero__visual-skeleton {
  background-color: #f3f4f6;
  border-radius: var(--radius-sm);
}
.hero__visual-skeleton.title { height: 32px; width: 60%; margin-bottom: 8px; }
.hero__visual-skeleton.text { height: 16px; width: 90%; }
.hero__visual-skeleton.text-short { height: 16px; width: 70%; }
.hero__visual-skeleton.image { height: 120px; width: 100%; border-radius: var(--radius-md); margin-top: auto; }

/* ==========================================================================
   USP Bar
   ========================================================================== */

.usp-bar {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-8) 0;
}
.usp-bar__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
  text-align: center;
}
.usp-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}
.usp-item__icon {
  width: 48px;
  height: 48px;
  color: var(--color-accent);
  background-color: var(--color-accent-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}
.usp-item__icon svg {
  width: 24px;
  height: 24px;
}
.usp-item__text {
  font-weight: 600;
  color: var(--color-primary);
}

/* ==========================================================================
   Two Column Generic (Problem/Solution, Independence)
   ========================================================================== */

.split-grid {
  display: grid;
  gap: var(--space-8);
}
@media (min-width: 768px) {
  .split-grid { grid-template-columns: 1fr 1fr; gap: var(--space-12); align-items: start; }
}
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  height: 100%;
}
.card--highlight {
  border: 2px solid var(--color-accent);
}
.card__title {
  margin-bottom: var(--space-4);
  font-size: 1.25rem;
}

/* ==========================================================================
   Features Grid
   ========================================================================== */

.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-top: var(--space-12);
}
@media (min-width: 768px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .features-grid { grid-template-columns: repeat(3, 1fr); }
}
.feature-card {
  padding: var(--space-6);
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: var(--transition-base);
}
.feature-card:hover {
  box-shadow: var(--shadow-sm);
  border-color: var(--color-accent);
}
.feature-card__icon {
  width: 40px;
  height: 40px;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}
.feature-card__title {
  font-size: 1.125rem;
  margin-bottom: var(--space-2);
}

/* ==========================================================================
   Steps Grid
   ========================================================================== */

.steps-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-top: var(--space-12);
}
@media (min-width: 768px) {
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .steps-grid { grid-template-columns: repeat(4, 1fr); }
}
.step-item {
  position: relative;
}
.step-item__number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-border);
  line-height: 1;
  margin-bottom: var(--space-4);
  font-variant-numeric: tabular-nums;
}
.step-item__title {
  font-size: 1.125rem;
}

/* ==========================================================================
   Pricing Cards
   ========================================================================== */

.pricing-grid {
  display: grid;
  gap: var(--space-8);
  margin-top: var(--space-12);
  margin-bottom: var(--space-8);
}
@media (min-width: 768px) {
  .pricing-grid { grid-template-columns: repeat(3, 1fr); align-items: stretch; }
}

.pricing-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  position: relative;
}
.pricing-card--highlight {
  border: 2px solid var(--color-accent);
  box-shadow: var(--shadow-md);
}
@media (min-width: 768px) {
  .pricing-card--highlight {
    transform: scale(1.02);
    z-index: 10;
  }
}
.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-accent);
  color: var(--color-surface);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 12px;
  border-radius: 9999px;
}
.pricing-card__name {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.pricing-card__price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
  line-height: 1;
}
.pricing-card__price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-muted);
}
.pricing-card__desc {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-bottom: var(--space-6);
  min-height: 3rem;
}
.pricing-list {
  margin-bottom: var(--space-8);
  flex-grow: 1;
}
.pricing-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  font-size: 0.9375rem;
}
.pricing-list li svg {
  width: 20px;
  height: 20px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ==========================================================================
   Pricing Table
   ========================================================================== */

.table-responsive {
  overflow-x: auto;
  margin-top: var(--space-8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.comparison-table {
  width: 100%;
  min-width: 800px;
  border-collapse: collapse;
  text-align: left;
}
.comparison-table th,
.comparison-table td {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}
.comparison-table th {
  background-color: var(--color-background);
  font-weight: 600;
  color: var(--color-primary);
}
.comparison-table tr:last-child td {
  border-bottom: none;
}
.comparison-table tbody tr:hover {
  background-color: var(--color-background);
}
.comparison-table .feature-name {
  font-weight: 500;
}
.comparison-table td.highlight {
  background-color: rgba(13, 148, 136, 0.05); /* Accent light very transparent */
}
.comparison-table th.highlight {
  background-color: rgba(13, 148, 136, 0.1);
}

/* ==========================================================================
   Accordion
   ========================================================================== */

.accordion-container {
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  overflow: hidden;
}
.accordion-trigger {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: var(--space-4) var(--space-6);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: inherit;
  transition: background-color 0.2s ease;
}
.accordion-trigger:hover {
  background-color: var(--color-background);
}
.accordion-icon {
  width: 24px;
  height: 24px;
  transition: transform 0.3s ease;
  color: var(--color-accent);
}
.accordion-trigger[aria-expanded="true"] .accordion-icon {
  transform: rotate(180deg);
}
.accordion-content {
  padding: 0 var(--space-6);
  max-height: 0;
  overflow: hidden;
  visibility: hidden;
  transition: all 0.3s ease-in-out;
  opacity: 0;
}
.accordion-trigger[aria-expanded="true"] + .accordion-content {
  padding: var(--space-4) var(--space-6) var(--space-6);
  max-height: 2000px; /* arbitrary max height */
  visibility: visible;
  opacity: 1;
}
.accordion-content ul {
  list-style-type: disc;
  padding-left: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

/* ==========================================================================
   Forms
   ========================================================================== */

.form-group {
  margin-bottom: var(--space-4);
}
.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-2);
  color: var(--color-primary);
}
.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
  background-color: var(--color-surface);
  transition: border-color 0.2s ease;
}
.form-control:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-light);
}
textarea.form-control {
  min-height: 120px;
  resize: vertical;
}
.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}
.form-checkbox input[type="checkbox"] {
  margin-top: 0.25rem;
  width: 1rem;
  height: 1rem;
  accent-color: var(--color-accent);
}
.form-text {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}
.form-card {
  background-color: var(--color-surface);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background-color: var(--color-primary);
  color: #9ca3af;
  padding: var(--space-16) 0 var(--space-8);
}
.footer__grid {
  display: grid;
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}
@media (min-width: 768px) {
  .footer__grid { grid-template-columns: 1fr 1fr 1fr; }
}
.footer__brand .logo {
  color: var(--color-surface);
  margin-bottom: var(--space-4);
}
.footer h4 {
  color: var(--color-surface);
  margin-bottom: var(--space-4);
}
.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer__links a {
  color: #9ca3af;
}
.footer__links a:hover {
  color: var(--color-surface);
}
.footer__bottom {
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-primary-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
  font-size: 0.875rem;
}
@media (min-width: 768px) {
  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }
.gap-4 { gap: var(--space-4); }
.gap-8 { gap: var(--space-8); }

.list-check {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.list-check li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}
.list-check li svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
  flex-shrink: 0;
}