/* ================================================================
   TAGSAI - MAIN STYLESHEET
   A professional, modern SaaS-style YouTube Tags Generator website.
   ================================================================ */

/* ----------------------------------------------------------------
   1. CSS CUSTOM PROPERTIES (Variables)
   ---------------------------------------------------------------- */
:root {
  /* Brand Colors */
  --color-primary:        #6C63FF;
  --color-primary-dark:   #5A52E0;
  --color-primary-light:  #8A83FF;
  --color-secondary:      #E040FB;
  --color-accent:         #00BCD4;

  /* Neutral Colors */
  --color-bg:             #0F0E17;
  --color-bg-secondary:   #16151F;
  --color-bg-card:        #1C1B28;
  --color-bg-card-hover:  #222133;
  --color-border:         #2A2940;
  --color-border-light:   #363550;

  /* Text Colors */
  --color-text-primary:   #EEEEF4;
  --color-text-secondary: #9B9AB2;
  --color-text-muted:     #5C5B75;
  --color-text-inverse:   #0F0E17;

  /* Status Colors */
  --color-success:        #4CAF50;
  --color-success-bg:     rgba(76, 175, 80, 0.12);
  --color-error:          #F44336;
  --color-error-bg:       rgba(244, 67, 54, 0.12);
  --color-warning:        #FF9800;

  /* Feature Icon Colors */
  --color-purple:         rgba(108, 99, 255, 0.15);
  --color-pink:           rgba(224, 64, 251, 0.15);
  --color-blue:           rgba(33, 150, 243, 0.15);
  --color-green:          rgba(76, 175, 80, 0.15);
  --color-orange:         rgba(255, 152, 0, 0.15);
  --color-teal:           rgba(0, 188, 212, 0.15);

  /* Gradients */
  --gradient-primary:     linear-gradient(135deg, #6C63FF 0%, #E040FB 100%);
  --gradient-hero:        linear-gradient(135deg, #0F0E17 0%, #1a1830 50%, #0F0E17 100%);
  --gradient-card:        linear-gradient(145deg, #1C1B28, #222133);
  --gradient-cta:         linear-gradient(135deg, #6C63FF 0%, #E040FB 100%);

  /* Shadows */
  --shadow-sm:            0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md:            0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg:            0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-primary:       0 8px 30px rgba(108, 99, 255, 0.3);
  --shadow-glow:          0 0 40px rgba(108, 99, 255, 0.15);

  /* Border Radius */
  --radius-sm:            6px;
  --radius-md:            12px;
  --radius-lg:            18px;
  --radius-xl:            24px;
  --radius-full:          9999px;

  /* Spacing */
  --spacing-xs:           4px;
  --spacing-sm:           8px;
  --spacing-md:           16px;
  --spacing-lg:           24px;
  --spacing-xl:           40px;
  --spacing-2xl:          64px;
  --spacing-3xl:          96px;

  /* Typography */
  --font-family:          'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono:            'Fira Code', 'Courier New', monospace;

  /* Transitions */
  --transition-fast:      0.15s ease;
  --transition-base:      0.25s ease;
  --transition-slow:      0.4s ease;

  /* Z-Index Layers */
  --z-navbar:             100;
  --z-notification:       200;
  --z-overlay:            300;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul {
  list-style: none;
}

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

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

textarea {
  font-family: inherit;
  resize: vertical;
}

/* ----------------------------------------------------------------
   3. LAYOUT UTILITIES
   ---------------------------------------------------------------- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
}

/* ----------------------------------------------------------------
   4. GRADIENT TEXT UTILITY
   ---------------------------------------------------------------- */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ----------------------------------------------------------------
   5. BUTTON SYSTEM
   ---------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
  text-align: center;
  white-space: nowrap;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 3px;
}

/* Primary */
.btn--primary {
  background: var(--gradient-primary);
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-primary);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 35px rgba(108, 99, 255, 0.45);
  filter: brightness(1.08);
}

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

/* Secondary */
.btn--secondary {
  background: var(--color-bg-card);
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

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

/* Ghost */
.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border-color: var(--color-border);
}

.btn--ghost:hover {
  background: var(--color-bg-card);
  color: var(--color-text-primary);
  border-color: var(--color-border-light);
}

/* White (for CTA on gradient bg) */
.btn--white {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
}

.btn--white:hover {
  background: rgba(255, 255, 255, 0.9);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* Sizes */
.btn--small  { padding: 7px 14px;  font-size: 0.82rem; border-radius: var(--radius-sm); }
.btn--large  { padding: 13px 28px; font-size: 1rem;    border-radius: var(--radius-lg); }
.btn--xlarge { padding: 16px 32px; font-size: 1.05rem; border-radius: var(--radius-lg); }
.btn--full   { width: 100%; }

/* Disabled */
.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none !important;
  filter: none !important;
}

/* ----------------------------------------------------------------
   6. SECTION HEADER (Shared)
   ---------------------------------------------------------------- */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(108, 99, 255, 0.1);
  color: var(--color-primary-light);
  border: 1px solid rgba(108, 99, 255, 0.25);
  padding: 5px 16px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-md);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--color-text-primary);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ----------------------------------------------------------------
   7. NAVBAR
   ---------------------------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-navbar);
  background: rgba(15, 14, 23, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

/* Logo */
.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-text {
  font-size: 1.2rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

/* Nav Menu */
.navbar__menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.navbar__list {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  list-style: none;
}

.navbar__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
}

.navbar__link:hover,
.navbar__link:focus {
  color: var(--color-text-primary);
}

.navbar__link:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}

.navbar__cta {
  padding: 8px 18px;
  font-size: 0.88rem;
}

/* Hamburger Toggle */
.navbar__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: background var(--transition-fast);
  flex-shrink: 0;
}

.navbar__toggle:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}

.navbar__toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.navbar__toggle:hover {
  background: var(--color-bg-card-hover);
}

@media (max-width: 768px) {
  .navbar__toggle {
    display: flex;
  }

  .navbar__menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--spacing-md);
    transform: translateY(-110%);
    opacity: 0;
    transition: transform var(--transition-base), opacity var(--transition-base);
    pointer-events: none;
  }

  .navbar__menu.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .navbar__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .navbar__link {
    display: block;
    padding: 12px 16px;
    font-size: 1rem;
    border-radius: var(--radius-md);
  }

  .navbar__link:hover {
    background: var(--color-bg-card);
  }

  .navbar__cta {
    margin-top: var(--spacing-sm);
    width: 100%;
    text-align: center;
    padding: 13px;
  }
}

/* ----------------------------------------------------------------
   8. HERO SECTION
   ---------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 64px;
  overflow: hidden;
  background: var(--gradient-hero);
}

/* Background Decorative Shapes */
.hero__bg-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.12;
  animation: floatShape 8s ease-in-out infinite;
}

.shape--1 {
  width: 500px;
  height: 500px;
  background: var(--color-primary);
  top: -150px;
  right: -100px;
  animation-delay: 0s;
}

.shape--2 {
  width: 350px;
  height: 350px;
  background: var(--color-secondary);
  bottom: 50px;
  left: -80px;
  animation-delay: 3s;
}

.shape--3 {
  width: 250px;
  height: 250px;
  background: var(--color-accent);
  top: 40%;
  left: 50%;
  animation-delay: 5s;
}

@keyframes floatShape {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%       { transform: translate(20px, -30px) scale(1.05); }
  66%       { transform: translate(-15px, 20px) scale(0.95); }
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
  padding-top: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
  position: relative;
  z-index: 1;
}

/* Hero Content */
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.3);
  color: var(--color-primary-light);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-lg);
}

.badge-dot {
  width: 7px;
  height: 7px;
  background: var(--color-success);
  border-radius: 50%;
  animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.8); }
}

.hero__heading {
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.hero__subheading {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.hero__subheading strong {
  color: var(--color-text-primary);
}

.hero__description {
  font-size: 0.98rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--spacing-xl);
}

.hero__actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-xl);
}

/* Hero Stats */
.hero__stats {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

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

.stat strong {
  font-size: 1.6rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat span {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--color-border);
}

/* Hero Visual Card */
.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.visual-card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-glow), var(--shadow-lg);
  overflow: hidden;
  animation: cardFloat 6s ease-in-out infinite;
}

@keyframes cardFloat {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-12px); }
}

.visual-card__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: 14px 20px;
  border-bottom: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.02);
}

.visual-dots {
  display: flex;
  gap: 6px;
}

.visual-dots span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--color-border);
}

.visual-dots span:nth-child(1) { background: #FF5F57; }
.visual-dots span:nth-child(2) { background: #FEBC2E; }
.visual-dots span:nth-child(3) { background: #28C840; }

.visual-card__title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.visual-card__body {
  padding: 20px;
}

.visual-input {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-bottom: 16px;
}

.visual-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.visual-text {
  font-size: 0.88rem;
  color: var(--color-text-primary);
  font-weight: 500;
}

.visual-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 16px;
}

.visual-tag {
  display: inline-block;
  background: rgba(108, 99, 255, 0.15);
  border: 1px solid rgba(108, 99, 255, 0.3);
  color: var(--color-primary-light);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 500;
  animation: tagAppear 0.4s ease forwards;
}

@keyframes tagAppear {
  from { opacity: 0; transform: scale(0.85); }
  to   { opacity: 1; transform: scale(1); }
}

.visual-tag:nth-child(1) { animation-delay: 0.1s; }
.visual-tag:nth-child(2) { animation-delay: 0.2s; }
.visual-tag:nth-child(3) { animation-delay: 0.3s; }
.visual-tag:nth-child(4) { animation-delay: 0.4s; }
.visual-tag:nth-child(5) { animation-delay: 0.5s; }
.visual-tag:nth-child(6) { animation-delay: 0.6s; }
.visual-tag:nth-child(7) { animation-delay: 0.7s; }
.visual-tag:nth-child(8) { animation-delay: 0.8s; }

.visual-progress {
  height: 4px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 10px;
}

.visual-progress__bar {
  height: 100%;
  width: 75%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  animation: progressPulse 3s ease-in-out infinite;
}

@keyframes progressPulse {
  0%, 100% { width: 75%; }
  50%       { width: 90%; }
}

.visual-meta {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  text-align: center;
}

/* Hero responsive */
@media (max-width: 900px) {
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero__badge {
    margin-left: auto;
    margin-right: auto;
  }
  .hero__actions {
    justify-content: center;
  }
  .hero__stats {
    justify-content: center;
  }
  .stat {
    align-items: center;
  }
  .hero__visual {
    order: -1;
  }
  .visual-card {
    max-width: 360px;
  }
}

@media (max-width: 480px) {
  .hero__heading {
    font-size: 2rem;
  }
  .hero__actions {
    flex-direction: column;
  }
  .hero__actions .btn {
    width: 100%;
  }
}

/* ----------------------------------------------------------------
   9. GENERATOR SECTION
   ---------------------------------------------------------------- */
.generator-section {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-secondary);
  position: relative;
}

.generator-card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  max-width: 800px;
  margin: 0 auto;
}

@media (max-width: 600px) {
  .generator-card {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
  }
}

/* Input Group */
.input-group {
  margin-bottom: var(--spacing-lg);
}

.input-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.textarea-wrapper {
  position: relative;
}

.input-textarea {
  width: 100%;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 16px 52px 16px 16px;
  color: var(--color-text-primary);
  font-size: 0.95rem;
  line-height: 1.6;
  resize: vertical;
  min-height: 130px;
  max-height: 300px;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.input-textarea::placeholder {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.input-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.15);
}

.input-textarea:focus + .clear-btn {
  opacity: 1;
}

/* Clear Input Button */
.clear-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  opacity: 0.7;
}

.clear-btn:hover {
  background: var(--color-error-bg);
  border-color: var(--color-error);
  color: var(--color-error);
  opacity: 1;
}

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

/* Input Meta */
.input-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--spacing-sm);
}

.input-hint {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.char-count {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}

.char-count.is-warning { color: var(--color-warning); }
.char-count.is-danger  { color: var(--color-error); }

/* Generate Actions */
.generate-actions {
  margin-top: var(--spacing-md);
}

.generate-btn {
  position: relative;
  gap: var(--spacing-sm);
}

.generate-btn .btn-loading {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Spinner */
.spinner {
  width: 18px;
  height: 18px;
  border: 2.5px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
  flex-shrink: 0;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ----------------------------------------------------------------
   10. LOADING STATE
   ---------------------------------------------------------------- */
.loading-state {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.loading-animation {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
}

.loading-bars {
  display: flex;
  gap: 5px;
  align-items: flex-end;
  height: 40px;
}

.loading-bars .bar {
  width: 6px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  animation: barBounce 1.2s ease-in-out infinite;
}

.loading-bars .bar:nth-child(1) { animation-delay: 0.0s; height: 20px; }
.loading-bars .bar:nth-child(2) { animation-delay: 0.2s; height: 32px; }
.loading-bars .bar:nth-child(3) { animation-delay: 0.4s; height: 40px; }
.loading-bars .bar:nth-child(4) { animation-delay: 0.2s; height: 32px; }
.loading-bars .bar:nth-child(5) { animation-delay: 0.0s; height: 20px; }

@keyframes barBounce {
  0%, 100% { transform: scaleY(0.5); opacity: 0.4; }
  50%       { transform: scaleY(1);   opacity: 1;   }
}

.loading-text {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.loading-subtext {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

/* ----------------------------------------------------------------
   11. ERROR STATE
   ---------------------------------------------------------------- */
.error-state {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  background: var(--color-error-bg);
  border: 1px solid rgba(244, 67, 54, 0.3);
  border-radius: var(--radius-md);
  padding: var(--spacing-md) var(--spacing-lg);
  margin-top: var(--spacing-lg);
  animation: fadeIn 0.3s ease;
}

.error-icon {
  color: var(--color-error);
  flex-shrink: 0;
  margin-top: 2px;
}

.error-content {
  flex: 1;
}

.error-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-error);
  margin-bottom: 4px;
}

.error-message {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.error-close {
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  flex-shrink: 0;
}

.error-close:hover {
  color: var(--color-error);
  background: rgba(244, 67, 54, 0.1);
}

.error-close:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}

/* ----------------------------------------------------------------
   12. EMPTY STATE
   ---------------------------------------------------------------- */
.empty-state {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-lg);
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  margin-top: var(--spacing-lg);
}

.empty-state__icon {
  color: var(--color-text-muted);
  margin: 0 auto var(--spacing-md);
  opacity: 0.5;
}

.empty-state__text {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.empty-state__subtext {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* ----------------------------------------------------------------
   13. RESULTS SECTION
   ---------------------------------------------------------------- */
.results-section {
  margin-top: var(--spacing-xl);
  animation: fadeIn 0.4s ease;
}

.results-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.results-title-area {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.results-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.tag-count-badge {
  background: var(--color-success-bg);
  color: var(--color-success);
  border: 1px solid rgba(76, 175, 80, 0.3);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.results-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.results-hint {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

/* Tags Container */
.tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: var(--spacing-md);
}

/* Individual Tag Chip */
.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.25);
  color: var(--color-primary-light);
  padding: 8px 14px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  user-select: none;
  animation: chipAppear 0.35s ease both;
  line-height: 1.4;
}

@keyframes chipAppear {
  from { opacity: 0; transform: translateY(8px) scale(0.9); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.tag-chip:hover {
  background: rgba(108, 99, 255, 0.2);
  border-color: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(108, 99, 255, 0.25);
}

.tag-chip:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
}

.tag-chip:active {
  transform: translateY(0) scale(0.97);
}

/* Copied state for individual tag */
.tag-chip.is-copied {
  background: var(--color-success-bg);
  border-color: rgba(76, 175, 80, 0.4);
  color: var(--color-success);
}

.tag-chip__icon {
  flex-shrink: 0;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.tag-chip:hover .tag-chip__icon {
  opacity: 1;
}

/* Copy Notification Toast */
.copy-notification {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--color-success-bg);
  border: 1px solid rgba(76, 175, 80, 0.3);
  color: var(--color-success);
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-size: 0.88rem;
  font-weight: 600;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ----------------------------------------------------------------
   14. HOW IT WORKS SECTION
   ---------------------------------------------------------------- */
.how-it-works {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg);
}

.steps-grid {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  justify-content: center;
}

.step-card {
  flex: 1;
  max-width: 300px;
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl) var(--spacing-lg);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  position: relative;
}

.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-primary);
  border-color: var(--color-primary);
}

.step-number {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 3rem;
  font-weight: 900;
  color: rgba(108, 99, 255, 0.08);
  line-height: 1;
  letter-spacing: -0.03em;
  user-select: none;
}

.step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: rgba(108, 99, 255, 0.1);
  border: 1px solid rgba(108, 99, 255, 0.2);
  border-radius: var(--radius-lg);
  color: var(--color-primary-light);
  margin: 0 auto var(--spacing-lg);
  transition: background var(--transition-base), color var(--transition-base);
}

.step-card:hover .step-icon {
  background: rgba(108, 99, 255, 0.2);
  color: #fff;
}

.step-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.step-description {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.step-connector {
  color: var(--color-text-muted);
  flex-shrink: 0;
  opacity: 0.4;
}

@media (max-width: 768px) {
  .steps-grid {
    flex-direction: column;
    align-items: stretch;
    max-width: 400px;
    margin: 0 auto;
  }
  .step-card {
    max-width: 100%;
  }
  .step-connector {
    transform: rotate(90deg);
    margin: -8px auto;
    display: flex;
  }
}

/* ----------------------------------------------------------------
   15. FEATURES SECTION
   ---------------------------------------------------------------- */
.features-section {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-secondary);
}

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

@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 540px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

.feature-card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl) var(--spacing-lg);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-light);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.feature-icon--purple { background: var(--color-purple); color: var(--color-primary-light); }
.feature-icon--pink   { background: var(--color-pink);   color: #E040FB; }
.feature-icon--blue   { background: var(--color-blue);   color: #64B5F6; }
.feature-icon--green  { background: var(--color-green);  color: var(--color-success); }
.feature-icon--orange { background: var(--color-orange); color: var(--color-warning); }
.feature-icon--teal   { background: var(--color-teal);   color: var(--color-accent); }

.feature-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.feature-description {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ----------------------------------------------------------------
   16. ABOUT SECTION
   ---------------------------------------------------------------- */
.about-section {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg);
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

@media (max-width: 768px) {
  .about-inner {
    grid-template-columns: 1fr;
  }
  .about-visual {
    order: -1;
  }
}

.about-content .section-badge,
.about-content .section-title {
  text-align: left;
}

.about-text {
  font-size: 0.96rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.about-content .btn {
  margin-top: var(--spacing-sm);
}

.about-stat-card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
  box-shadow: var(--shadow-glow);
}

.about-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.about-stat__number {
  font-size: 3rem;
  font-weight: 900;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 6px;
}

.about-stat__label {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

/* ----------------------------------------------------------------
   17. CTA SECTION
   ---------------------------------------------------------------- */
.cta-section {
  padding: var(--spacing-3xl) 0;
  background: var(--color-bg-secondary);
}

.cta-inner {
  background: var(--gradient-cta);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl) var(--spacing-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-primary);
}

.cta-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.cta-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
  position: relative;
}

.cta-subtitle {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.cta-inner .btn {
  position: relative;
}

/* ----------------------------------------------------------------
   18. FOOTER
   ---------------------------------------------------------------- */
.footer {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid var(--color-border);
}

@media (max-width: 640px) {
  .footer__inner {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}

.footer__brand {
  max-width: 360px;
}

.footer__logo {
  margin-bottom: var(--spacing-md);
  display: inline-flex;
}

.footer__description {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.footer__links {
  display: flex;
  gap: var(--spacing-xl);
}

@media (max-width: 420px) {
  .footer__links {
    gap: var(--spacing-lg);
  }
}

.footer__col-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-md);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__link {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-text-primary);
}

.footer__link:focus-visible {
  outline: 2px solid var(--color-primary-light);
  outline-offset: 2px;
  border-radius: 2px;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-lg);
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.footer__copyright,
.footer__note {
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ----------------------------------------------------------------
   19. SCROLLBAR STYLING
   ---------------------------------------------------------------- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-light);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted);
}

/* ----------------------------------------------------------------
   20. SELECTION
   ---------------------------------------------------------------- */
::selection {
  background: rgba(108, 99, 255, 0.35);
  color: var(--color-text-primary);
}

/* ----------------------------------------------------------------
   21. FOCUS RESET (Accessibility + Style)
   ---------------------------------------------------------------- */
:focus {
  outline: none;
}

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

/* ----------------------------------------------------------------
   22. REDUCED MOTION
   ---------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}