/* ============================================================
   WebCalc – Website Price Calculator Stylesheet
   File: css/style.css
   
   🎨 PERSONALIZATION GUIDE:
   - CHANGE COLORS: Scroll down to '--color-accent' and other color variables.
   - CHANGE FONTS: Edit the '--font-family' variable.
   - CHANGE SPACING: Edit the '--space-#' variables.
   - BORDERS: Edit '--radius-#' for rounder or sharper corners.
============================================================ */


/* ============================================================
   1. CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ─────────────────────────────────────────────────────────────
   This section defines the "Theme" of your calculator. 
   Modifying values here will update the design globally.
============================================================ */
:root {
  /* --- Brand Colors --- */
  --color-accent: #7c6fff;
  /* Primary brand color (indigo-purple) */
  --color-accent-light: #9f96ff;
  /* Lighter version for text/highlights */
  --color-accent-2: #ff6b8b;
  /* Secondary decorative color (pink) */
  --color-accent-3: #3eeea0;
  /* Highlight color for 'Success' states (green) */

  /* --- Background & Surface Colors --- */
  --color-bg: #0a0c12;
  /* The main background color */
  --color-surface: #10131c;
  /* Default card/section background */
  --color-surface-2: #181c28;
  /* Elevate cards on hover */
  --color-surface-3: #1e2232;
  /* Deeper level of elevation */

  /* --- Borders & Outlines --- */
  --color-border: #1e2236;
  /* Default border color */
  --color-border-hover: #383d5f;
  /* Border color when hovering */

  /* --- Text Colors --- */
  --color-text: #eceef5;
  /* Main body/heading text */
  --color-text-sub: #a0a3b8;
  /* Subtitles and descriptions */
  --color-text-muted: #6a6e88;
  /* Muted text/labels */
  --color-text-faint: #404360;
  /* Very subtle or disabled text */

  /* --- Status Colors --- */
  --color-error: #ff4f70;
  /* Red color for validation errors */
  --color-accent-glow: rgba(124, 111, 255, 0.22);

  /* --- Typography --- */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 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: 2rem;
  /* 32px */
  --font-size-4xl: 2.75rem;
  /* 44px */
  --font-size-5xl: 3.75rem;
  /* 60px */

  /* --- Spacing (Margins, Padding, Gaps) --- */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  /* --- Border Radius --- */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* --- Shadows --- */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.65);
  --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.04) inset;

  /* --- Transitions (Animations Speed) --- */
  --transition-fast: 160ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 260ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 420ms cubic-bezier(0.4, 0, 0.2, 1);

  /* --- Container Settings --- */
  --container-max: 1120px;
  --container-pad: var(--space-6);
}


/* ============================================================
   2. RESET & BASE
============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  /* Rich multi-layer background: top-left soft purple, bottom-right pink, centered glow */
  background-image:
    radial-gradient(ellipse 80% 60% at 10% 0%, rgba(124, 111, 255, 0.10) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 90% 100%, rgba(255, 107, 139, 0.07) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 50% 50%, rgba(62, 238, 160, 0.03) 0%, transparent 60%);
}

img,
svg {
  display: block;
  max-width: 100%;
}

ul {
  list-style: none;
}

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

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

input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  margin: 0;
}


/* ============================================================
   3. TYPOGRAPHY
============================================================ */
h1,
h2,
h3,
h4 {
  line-height: 1.15;
  font-weight: 700;
  color: var(--color-text);
}

p {
  color: var(--color-text-sub);
}


/* ============================================================
   4. LAYOUT UTILITIES
============================================================ */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.hidden {
  display: none !important;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}


/* ============================================================
   5. SITE HEADER
============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 12, 18, 0.82);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-block: var(--space-4);
}

/* Thin accent line at very top of header */
.site-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent), var(--color-accent-2), transparent);
  opacity: 0.5;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.lang-switcher {
  display: flex;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  padding: 4px;
}

.lang-btn {
  background: transparent;
  border: none;
  color: var(--color-text-sub);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 6px 12px;
  cursor: pointer;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.lang-btn:hover {
  color: var(--color-text);
}

.lang-btn.active {
  background: var(--color-accent);
  color: white;
  box-shadow: 0 0 15px rgba(168, 85, 247, 0.3);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: linear-gradient(145deg, var(--color-accent), #a89aff);
  border-radius: var(--radius-md);
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 4px 18px rgba(124, 111, 255, 0.45), var(--shadow-card);
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #fff 40%, var(--color-accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-tagline {
  font-size: var(--font-size-sm);
  color: var(--color-text-faint);
  letter-spacing: 0.05em;
  font-weight: 500;
}


/* ============================================================
   6. HERO SECTION
============================================================ */
.hero {
  padding-block: var(--space-20) var(--space-12);
  text-align: center;
  position: relative;
}

/* Decorative glow orb centered behind the hero */
.hero::before {
  content: '';
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(124, 111, 255, 0.12) 0%, transparent 70%);
  pointer-events: none;
  filter: blur(20px);
}

.hero-content {
  max-width: 760px;
  margin-inline: auto;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(124, 111, 255, 0.12);
  border: 1px solid rgba(124, 111, 255, 0.3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-accent-light);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-6);
  animation: fadeInDown 0.7s ease both;
}

/* Pulsing dot inside the badge */
.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent-3);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--color-accent-3);
  animation: pulse 2s ease infinite;
}

.hero-title {
  font-size: clamp(2.2rem, 6.5vw, var(--font-size-5xl));
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin-bottom: var(--space-5);
  animation: fadeInDown 0.7s 0.1s ease both;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-sub);
  max-width: 580px;
  margin-inline: auto;
  margin-bottom: var(--space-10);
  line-height: 1.75;
  animation: fadeInDown 0.7s 0.2s ease both;
}


/* ============================================================
   7. PROGRESS STEPS BAR
============================================================ */
.progress-bar-wrapper {
  animation: fadeInDown 0.7s 0.3s ease both;
}

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

.progress-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-border);
  font-weight: 700;
  font-size: var(--font-size-sm);
  color: var(--color-text-faint);
  background: var(--color-surface);
  transition: all var(--transition-base);
  position: relative;
}

.step-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-faint);
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: color var(--transition-base);
  white-space: nowrap;
}

.progress-step.active .step-number {
  background: linear-gradient(145deg, var(--color-accent), #a89aff);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 0 0 4px var(--color-accent-glow), 0 4px 16px rgba(124, 111, 255, 0.35);
}

.progress-step.active .step-label {
  color: var(--color-accent-light);
  font-weight: 700;
}

.progress-step.done .step-number {
  background: linear-gradient(145deg, var(--color-accent-3), #28d98e);
  border-color: transparent;
  color: #0a0c12;
  box-shadow: 0 4px 14px rgba(62, 238, 160, 0.3);
}

.progress-step.done .step-label {
  color: var(--color-accent-3);
}

.progress-connector {
  width: 70px;
  height: 2px;
  background: var(--color-border);
  margin-inline: var(--space-3);
  margin-bottom: 22px;
  flex-shrink: 0;
  border-radius: 2px;
  transition: background var(--transition-slow);
  overflow: hidden;
  position: relative;
}

.progress-connector::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-3));
  transform: translateX(-100%);
  transition: transform var(--transition-slow);
  border-radius: 2px;
}

.progress-connector.active::after {
  transform: translateX(0);
}


/* ============================================================
   8. CALCULATOR STEPS
============================================================ */
.calculator-section {
  padding-bottom: var(--space-24);
}

.calc-step {
  margin-bottom: var(--space-16);
  animation: fadeInUp 0.55s ease both;
}

/* Divider line between steps */
.calc-step+.calc-step {
  padding-top: var(--space-12);
  border-top: 1px solid var(--color-border);
  margin-top: calc(-1 * var(--space-4));
}

.step-header {
  margin-bottom: var(--space-8);
}

.step-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-4);
  background: rgba(124, 111, 255, 0.1);
  border: 1px solid rgba(124, 111, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  color: var(--color-accent-light);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.step-badge::before {
  content: '';
  width: 5px;
  height: 5px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 5px var(--color-accent);
}

.step-title {
  font-size: clamp(var(--font-size-xl), 3vw, var(--font-size-2xl));
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.step-desc {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: 1.6;
}


/* ============================================================
   9. TYPE CARDS – STEP 1 (Website Type Selection)
============================================================ */
.type-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-4);
}

.type-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  text-align: left;
  transition:
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base),
    background var(--transition-base);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

/* Top glint line */
.type-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
  pointer-events: none;
}

/* Hover purple gradient overlay */
.type-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top left, var(--color-accent-glow), transparent 65%);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.type-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  background: var(--color-surface-2);
}

.type-card:hover::after {
  opacity: 1;
}

/* Selected */
.type-card.selected {
  border-color: var(--color-accent);
  background: rgba(124, 111, 255, 0.07);
  box-shadow: var(--shadow-accent), var(--shadow-md);
  transform: translateY(-3px);
}

.type-card.selected::after {
  opacity: 1;
}

/* Selected checkmark */
.type-card.selected .type-checkmark {
  opacity: 1;
  transform: scale(1);
}

.type-checkmark {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 24px;
  height: 24px;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.5);
  transition: opacity var(--transition-base), transform var(--transition-base);
  box-shadow: 0 2px 8px rgba(124, 111, 255, 0.5);
  z-index: 1;
}

.type-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  flex-shrink: 0;
  transition:
    background var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
  position: relative;
  z-index: 1;
}

.type-card.selected .type-icon {
  background: var(--color-accent);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 18px rgba(124, 111, 255, 0.45);
}

.type-name {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
  position: relative;
  z-index: 1;
}

.type-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
  flex: 1;
  position: relative;
  z-index: 1;
}

.type-price-tag {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-accent-light);
  background: rgba(124, 111, 255, 0.12);
  border: 1px solid rgba(124, 111, 255, 0.2);
  padding: 3px var(--space-3);
  border-radius: var(--radius-full);
  margin-top: auto;
  position: relative;
  z-index: 1;
  letter-spacing: 0.02em;
}


/* ============================================================
   10. PAGE CARDS – STEP 2 (Number of Pages)
============================================================ */
.pages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.page-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-10) var(--space-4);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition:
    border-color var(--transition-base),
    transform var(--transition-base),
    box-shadow var(--transition-base),
    background var(--transition-base);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.page-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top center, var(--color-accent-glow), transparent 65%);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.page-card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  background: var(--color-surface-2);
}

.page-card:hover::before {
  opacity: 0.8;
}

.page-card.selected {
  border-color: var(--color-accent);
  background: rgba(124, 111, 255, 0.07);
  box-shadow: var(--shadow-accent), var(--shadow-md);
  transform: translateY(-3px);
}

.page-card.selected::before {
  opacity: 1;
}

.page-card.selected .page-checkmark {
  opacity: 1;
  transform: scale(1);
}

.page-checkmark {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 22px;
  height: 22px;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.5);
  transition: opacity var(--transition-base), transform var(--transition-base);
  box-shadow: 0 2px 8px rgba(124, 111, 255, 0.5);
  z-index: 1;
}

.page-number {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.05em;
  line-height: 1;
  transition: color var(--transition-base);
  position: relative;
  z-index: 1;
}

.page-card.selected .page-number {
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: 500;
  position: relative;
  z-index: 1;
}

.page-extra {
  font-size: var(--font-size-xs);
  color: var(--color-accent-light);
  font-weight: 700;
  background: rgba(124, 111, 255, 0.12);
  border: 1px solid rgba(124, 111, 255, 0.18);
  padding: 2px var(--space-3);
  border-radius: var(--radius-full);
  margin-top: var(--space-2);
  position: relative;
  z-index: 1;
}


/* ============================================================
   11. FEATURE CARDS – STEP 3 (Optional Features)
============================================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: var(--space-3);
}

.feature-card {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: 4px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition:
    border-color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
  box-shadow: var(--shadow-card);
}

.feature-card:hover {
  border-color: var(--color-border-hover);
  background: var(--color-surface-2);
  transform: translateX(3px);
  box-shadow: var(--shadow-sm);
}

.feature-card:has(input:checked) {
  border-color: var(--color-accent);
  background: rgba(124, 111, 255, 0.06);
  box-shadow: 0 0 0 1px rgba(124, 111, 255, 0.15), var(--shadow-sm);
}

/* Custom checkbox indicator */
.feature-check-indicator {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border: 2px solid var(--color-border);
  border-radius: 7px;
  background: var(--color-surface-2);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.feature-card:has(input:checked) .feature-check-indicator {
  background: var(--color-accent);
  border-color: var(--color-accent);
  box-shadow: 0 2px 10px rgba(124, 111, 255, 0.45);
}

.feature-check-indicator::after {
  content: '';
  width: 10px;
  height: 6px;
  border-left: 2.5px solid #fff;
  border-bottom: 2.5px solid #fff;
  transform: rotate(-45deg) translateY(-2px);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.feature-card:has(input:checked) .feature-check-indicator::after {
  opacity: 1;
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.feature-card:has(input:checked) .feature-icon {
  color: var(--color-accent-light);
  background: rgba(124, 111, 255, 0.14);
  border-color: rgba(124, 111, 255, 0.25);
}

.feature-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.feature-name {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}

.feature-desc {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  line-height: 1.45;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.feature-price {
  font-size: var(--font-size-sm);
  font-weight: 800;
  color: var(--color-accent-light);
  white-space: nowrap;
  flex-shrink: 0;
  background: rgba(124, 111, 255, 0.1);
  padding: 2px var(--space-3);
  border-radius: var(--radius-full);
  border: 1px solid rgba(124, 111, 255, 0.18);
}


/* ============================================================
   12. CALCULATE CTA
============================================================ */
.calculate-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  padding-top: var(--space-12);
  border-top: 1px solid var(--color-border);
  margin-bottom: var(--space-12);
}

.btn-calculate {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: 17px 52px;
  background: linear-gradient(135deg, var(--color-accent) 0%, #a89aff 100%);
  color: #fff;
  font-family: var(--font-family);
  font-size: var(--font-size-lg);
  font-weight: 700;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  letter-spacing: -0.015em;
  box-shadow:
    0 6px 32px rgba(124, 111, 255, 0.45),
    0 1px 0 rgba(255, 255, 255, 0.25) inset;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    filter var(--transition-fast);
  position: relative;
  overflow: hidden;
}

/* Shimmer sweep on hover */
.btn-calculate::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.18), transparent);
  transition: left 0.55s ease;
}

.btn-calculate:hover {
  transform: translateY(-3px);
  box-shadow:
    0 10px 42px rgba(124, 111, 255, 0.6),
    0 1px 0 rgba(255, 255, 255, 0.25) inset;
  filter: brightness(1.06);
}

.btn-calculate:hover::before {
  left: 100%;
}

.btn-calculate:active {
  transform: translateY(-1px);
}

/* Validation message */
.validation-msg {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-error);
  background: rgba(255, 79, 112, 0.09);
  border: 1px solid rgba(255, 79, 112, 0.25);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-5);
  animation: shakeX 0.45s ease;
}


/* ============================================================
   13. RESULT SECTION
============================================================ */
.result-section {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-12);
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}


/* ============================================================
   14. RESULT CARDS
============================================================ */
.result-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-12) var(--space-8);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

/* Glowing orb behind the value */
.result-card::before {
  content: '';
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 240px;
  height: 200px;
  border-radius: 50%;
  filter: blur(55px);
  opacity: 0.55;
  pointer-events: none;
}

.result-card--price::before {
  background: radial-gradient(var(--color-accent), transparent);
}

.result-card--time::before {
  background: radial-gradient(var(--color-accent-3), transparent);
}

/* Top glint line */
.result-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 20%;
  right: 20%;
  height: 1px;
  border-radius: 1px;
}

.result-card--price::after {
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  opacity: 0.6;
}

.result-card--time::after {
  background: linear-gradient(90deg, transparent, var(--color-accent-3), transparent);
  opacity: 0.5;
}

.result-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: var(--radius-lg);
  position: relative;
  z-index: 1;
}

.result-card--price .result-card-icon {
  background: rgba(124, 111, 255, 0.14);
  color: var(--color-accent-light);
  border: 1px solid rgba(124, 111, 255, 0.22);
  box-shadow: 0 4px 18px rgba(124, 111, 255, 0.2);
}

.result-card--time .result-card-icon {
  background: rgba(62, 238, 160, 0.1);
  color: var(--color-accent-3);
  border: 1px solid rgba(62, 238, 160, 0.2);
  box-shadow: 0 4px 18px rgba(62, 238, 160, 0.15);
}

.result-label {
  font-size: 11px;
  color: var(--color-text-muted);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  position: relative;
  z-index: 1;
}

.result-value {
  font-size: clamp(var(--font-size-3xl), 5.5vw, var(--font-size-4xl));
  font-weight: 800;
  letter-spacing: -0.05em;
  line-height: 1;
  position: relative;
  z-index: 1;
}

.result-card--price .result-value {
  background: linear-gradient(135deg, #fff 30%, var(--color-accent-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-card--time .result-value {
  background: linear-gradient(135deg, #fff 30%, var(--color-accent-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-note {
  font-size: var(--font-size-xs);
  color: var(--color-text-faint);
  max-width: 240px;
  line-height: 1.55;
  position: relative;
  z-index: 1;
  margin: 0;
}


/* ============================================================
   15. SUMMARY
============================================================ */
.result-summary {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

/* Subtle corner accent */
.result-summary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 200px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  opacity: 0.5;
}

.summary-title {
  font-size: var(--font-size-base);
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-6);
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Vertical accent bar */
.summary-title::before {
  content: '';
  width: 3px;
  height: 18px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-accent-2));
  border-radius: 2px;
  flex-shrink: 0;
}

.summary-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.summary-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: background var(--transition-fast);
}

.summary-item:hover {
  background: var(--color-surface-3);
}

.summary-item-label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: 500;
}

.summary-item-label::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  min-width: 20px;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(124, 111, 255, 0.4);
}

.summary-item-price {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-accent-light);
  white-space: nowrap;
}

.summary-total {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-4);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-3);
}

.summary-total-label {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
}

.summary-total-price {
  font-size: var(--font-size-xl);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}


/* ============================================================
   16. BUTTONS
============================================================ */
.result-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-5);
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.cta-note {
  font-size: var(--font-size-base);
  color: var(--color-text-sub);
  font-weight: 500;
  text-align: center;
  max-width: 500px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: 15px var(--space-10);
  background: linear-gradient(135deg, var(--color-accent), #a89aff);
  color: #fff;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 700;
  border-radius: var(--radius-full);
  letter-spacing: -0.01em;
  box-shadow:
    0 6px 28px rgba(124, 111, 255, 0.4),
    0 1px 0 rgba(255, 255, 255, 0.2) inset;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    filter var(--transition-fast);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow:
    0 10px 36px rgba(124, 111, 255, 0.55),
    0 1px 0 rgba(255, 255, 255, 0.2) inset;
  filter: brightness(1.05);
}

.btn-reset {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: 15px var(--space-8);
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border);
  cursor: pointer;
  transition:
    border-color var(--transition-fast),
    color var(--transition-fast),
    background var(--transition-fast),
    transform var(--transition-fast);
}

.btn-reset:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-light);
  background: rgba(124, 111, 255, 0.07);
  transform: translateY(-2px);
}


/* ============================================================
   17. FOOTER
============================================================ */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-8);
  background: var(--color-surface);
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(124, 111, 255, 0.3), transparent);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer-copy {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.footer-note {
  font-size: var(--font-size-xs);
  color: var(--color-text-faint);
  text-align: right;
}


/* ============================================================
   18. ANIMATIONS & KEYFRAMES
============================================================ */

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-22px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(32px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shakeX {

  0%,
  100% {
    transform: translateX(0);
  }

  20% {
    transform: translateX(-8px);
  }

  40% {
    transform: translateX(8px);
  }

  60% {
    transform: translateX(-5px);
  }

  80% {
    transform: translateX(5px);
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.5;
    transform: scale(0.85);
  }
}

@keyframes scalePop {
  0% {
    transform: scale(0.93);
    opacity: 0;
  }

  65% {
    transform: scale(1.015);
    opacity: 1;
  }

  100% {
    transform: scale(1);
  }
}

@keyframes pulseGlow {

  0%,
  100% {
    box-shadow: var(--shadow-card), 0 0 0 0 rgba(124, 111, 255, 0);
  }

  50% {
    box-shadow: var(--shadow-card), 0 0 0 8px rgba(124, 111, 255, 0);
  }
}

.result-section:not(.hidden) {
  animation: scalePop 0.55s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}


/* ============================================================
   19. MEDIA QUERIES – RESPONSIVE DESIGN
============================================================ */

/* --- Tablet (≤ 900px) --- */
@media (max-width: 900px) {
  :root {
    --container-pad: var(--space-5);
  }

  .hero {
    padding-block: var(--space-16) var(--space-10);
  }

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

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

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

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

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

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

/* --- Mobile (≤ 600px) --- */
@media (max-width: 600px) {
  :root {
    --container-pad: var(--space-4);
  }

  .header-tagline {
    display: none;
  }

  .hero {
    padding-block: var(--space-12) var(--space-6);
  }

  .progress-connector {
    width: 36px;
  }

  .step-label {
    font-size: 10px;
  }

  .type-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

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

  .page-card {
    padding: var(--space-8) var(--space-4);
  }

  .page-number {
    font-size: var(--font-size-3xl);
  }

  .calc-step+.calc-step {
    padding-top: var(--space-10);
  }

  .btn-calculate {
    width: 100%;
    justify-content: center;
    padding: 16px var(--space-6);
  }

  .result-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .result-card {
    padding: var(--space-10) var(--space-6);
  }

  .result-summary {
    padding: var(--space-5);
  }

  .result-actions {
    flex-direction: column;
    gap: var(--space-3);
  }

  .btn-primary,
  .btn-reset {
    width: 100%;
    justify-content: center;
  }

  .summary-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-2);
  }

  .feature-desc {
    white-space: normal;
  }
}

/* --- Small mobile (≤ 380px) --- */
@media (max-width: 380px) {
  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .step-title {
    font-size: var(--font-size-xl);
  }

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

html,
body {
  overflow-x: hidden;
}

@media (max-width: 600px) {
  .progress-steps {
    flex-wrap: wrap;
  }

  .progress-connector {
    display: none;
  }

  .header-inner {
    flex-wrap: wrap;
  }
}