/* =============================================
   DIAA STORE 2FA — DESIGN SYSTEM & STYLES
   Black + Purple Premium Theme
   ============================================= */

/* --- CSS Custom Properties --- */
:root {
  --bg-primary: #09090b;
  --bg-secondary: #0c0a14;
  --bg-card: rgba(14, 10, 26, 0.7);
  --bg-card-hover: rgba(24, 18, 42, 0.8);
  --bg-input: rgba(14, 10, 26, 0.9);

  --color-primary: #8b5cf6;
  --color-primary-hover: #7c3aed;
  --color-primary-light: #a78bfa;
  --color-primary-glow: rgba(139, 92, 246, 0.4);
  --color-primary-subtle: rgba(139, 92, 246, 0.1);

  --color-accent: #c084fc;
  --color-accent-glow: rgba(192, 132, 252, 0.3);

  --color-success: #10b981;
  --color-success-glow: rgba(16, 185, 129, 0.3);
  --color-error: #ef4444;
  --color-error-glow: rgba(239, 68, 68, 0.3);
  --color-warning: #f59e0b;

  --text-primary: #f5f3ff;
  --text-secondary: #a5a0c0;
  --text-muted: #6b6188;

  --border-color: rgba(139, 92, 246, 0.08);
  --border-active: rgba(139, 92, 246, 0.35);

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  --shadow-glow: 0 0 50px rgba(139, 92, 246, 0.12);
  --shadow-card: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow-strong: 0 0 80px rgba(139, 92, 246, 0.2);

  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  position: relative;
}

/* Global ambient blobs */
body::before {
  content: '';
  position: fixed;
  top: -300px;
  left: -200px;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.06), transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}
body::after {
  content: '';
  position: fixed;
  bottom: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.05), transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

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

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

input, textarea {
  font-family: inherit;
  outline: none;
  border: none;
}

::selection {
  background: var(--color-primary);
  color: white;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 5px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(139, 92, 246, 0.3);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(139, 92, 246, 0.5);
}

/* =============================================
   NAVBAR
   ============================================= */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 14px 32px;
  background: rgba(9, 9, 11, 0.6);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-normal);
}

.navbar-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all var(--transition-fast);
}
.navbar-brand:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.navbar-logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(168, 85, 247, 0.1));
  border: 2px solid var(--border-active);
  box-shadow: 0 0 24px var(--color-primary-glow);
  color: var(--color-primary-light);
  transition: all var(--transition-normal);
}
.navbar-brand:hover .navbar-logo-icon {
  box-shadow: 0 0 36px var(--color-primary-glow);
}

.navbar-title {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #f5f3ff, var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-title-accent {
  background: linear-gradient(135deg, var(--color-accent), #e879f9);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.navbar-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: all var(--transition-normal);
  border-radius: var(--radius-full);
}
.navbar-link:hover {
  color: var(--text-primary);
  background: rgba(139, 92, 246, 0.06);
}

.navbar-cta {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  background: rgba(139, 92, 246, 0.08);
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  text-shadow: 0 0 12px var(--color-accent-glow);
}
.navbar-cta:hover {
  background: rgba(139, 92, 246, 0.18);
  box-shadow: 0 0 35px var(--color-primary-glow);
  transform: translateY(-1px);
  border-color: rgba(139, 92, 246, 0.4);
}

/* =============================================
   HERO SECTION
   ============================================= */
.hero {
  position: relative;
  padding: 160px 32px 80px;
  text-align: center;
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(139, 92, 246, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(139, 92, 246, 0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 50% at 50% 0%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 50% at 50% 0%, black 40%, transparent 100%);
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(130px);
  pointer-events: none;
}
.hero-glow--1 {
  width: 700px;
  height: 700px;
  top: -300px;
  left: 50%;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(139, 92, 246, 0.14), transparent 70%);
}
.hero-glow--2 {
  width: 450px;
  height: 450px;
  top: -80px;
  right: -120px;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.08), transparent 70%);
}
.hero-glow--3 {
  width: 350px;
  height: 350px;
  bottom: -50px;
  left: -100px;
  background: radial-gradient(circle, rgba(232, 121, 249, 0.06), transparent 70%);
}

.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 750px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  background: rgba(139, 92, 246, 0.08);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--radius-full);
  margin-bottom: 28px;
  letter-spacing: 0.04em;
  animation: fadeInDown 0.6s ease;
  text-transform: uppercase;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
  animation: fadeInUp 0.7s ease;
}

.hero-title-gradient {
  background: linear-gradient(135deg, #8b5cf6, #c084fc, #e879f9);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto 36px;
  animation: fadeInUp 0.8s ease;
}

/* Hero Stats */
.hero-stats {
  display: inline-flex;
  align-items: center;
  gap: 24px;
  padding: 16px 32px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  animation: fadeInUp 0.9s ease;
}

.hero-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.hero-stat-number {
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font-mono);
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-stat-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 500;
}

.hero-stat-divider {
  width: 1px;
  height: 30px;
  background: var(--border-color);
}

/* =============================================
   GENERATOR SECTION
   ============================================= */
.generator-section {
  padding: 0 32px 80px;
  position: relative;
  z-index: 1;
}

.generator-card {
  max-width: 620px;
  margin: 0 auto;
  background: var(--bg-card);
  backdrop-filter: blur(28px) saturate(150%);
  -webkit-backdrop-filter: blur(28px) saturate(150%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  padding: 44px;
  box-shadow: var(--shadow-card), var(--shadow-glow);
  animation: fadeInUp 0.9s ease;
  position: relative;
  overflow: hidden;
}

/* card top glow line */
.generator-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), var(--color-accent), transparent);
}

.generator-header {
  text-align: center;
  margin-bottom: 32px;
}

.generator-icon-wrapper {
  width: 68px;
  height: 68px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.12), rgba(168, 85, 247, 0.08));
  border: 1px solid var(--border-active);
  border-radius: var(--radius-lg);
  color: var(--color-primary-light);
  animation: float 6s ease-in-out infinite;
}

.generator-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.generator-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --- Input Section --- */
.input-section {
  transition: all var(--transition-normal);
}
.input-section.hidden {
  display: none;
}

.input-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.input-label svg {
  color: var(--color-primary-light);
}

.input-group {
  position: relative;
  margin-bottom: 16px;
}

.input-field {
  width: 100%;
  padding: 16px 52px 16px 18px;
  font-size: 1rem;
  font-family: var(--font-mono);
  color: var(--text-primary);
  background: var(--bg-input);
  border: 1px solid rgba(139, 92, 246, 0.1);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  letter-spacing: 0.06em;
}
.input-field::placeholder {
  color: var(--text-muted);
  font-family: var(--font-family);
  letter-spacing: 0.02em;
}
.input-field:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-subtle), 0 0 24px var(--color-primary-glow);
}
.input-field.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.input-paste-btn {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(139, 92, 246, 0.1);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  transition: all var(--transition-fast);
}
.input-paste-btn:hover {
  color: var(--color-primary-light);
  background: rgba(139, 92, 246, 0.2);
}

/* --- Buttons --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 16px 28px;
  font-size: 1rem;
  font-weight: 600;
  color: white;
  background: linear-gradient(135deg, var(--color-primary), #7c3aed);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 35px var(--color-primary-glow);
}
.btn-primary:hover::before {
  opacity: 1;
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* --- Error Message --- */
.error-message {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--color-error);
  display: none;
  align-items: center;
  gap: 6px;
  text-align: center;
  justify-content: center;
}
.error-message.visible {
  display: flex;
  animation: shake 0.4s ease;
}

/* =============================================
   CODE DISPLAY
   ============================================= */
.code-display {
  display: none;
  animation: fadeInUp 0.5s ease;
}
.code-display.active {
  display: block;
}

/* Active Key Badge */
.active-key-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: rgba(16, 185, 129, 0.06);
  border: 1px solid rgba(16, 185, 129, 0.18);
  border-radius: var(--radius-md);
  margin-bottom: 28px;
}

.active-key-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(16, 185, 129, 0.12);
  border-radius: 50%;
  color: var(--color-success);
  flex-shrink: 0;
}

.active-key-text {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-success);
  flex: 1;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.active-key-change {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(139, 92, 246, 0.08);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  transition: all var(--transition-fast);
}
.active-key-change:hover {
  color: var(--color-primary-light);
  background: rgba(139, 92, 246, 0.18);
}

/* OTP Display */
.otp-display {
  margin-bottom: 24px;
}

.otp-code-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.otp-digits {
  display: flex;
  align-items: center;
  gap: 6px;
}

.otp-digit {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 80px;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.08), rgba(14, 10, 26, 0.9));
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--radius-md);
  font-size: 2.4rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-primary);
  transition: all var(--transition-normal);
  text-shadow: 0 0 20px var(--color-primary-glow);
}
.otp-digit.animate {
  animation: digitPop 0.4s ease;
}

.otp-separator {
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0.5;
  margin: 0 4px;
}

.copy-code-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 20px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary-light);
  background: rgba(139, 92, 246, 0.08);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}
.copy-code-btn:hover {
  background: rgba(139, 92, 246, 0.18);
  box-shadow: 0 0 25px var(--color-primary-glow);
  transform: translateY(-1px);
}
.copy-code-btn.copied {
  color: var(--color-success);
  border-color: rgba(16, 185, 129, 0.3);
  background: rgba(16, 185, 129, 0.08);
}

.copy-text {
  font-size: 0.85rem;
}

/* Timer Section */
.timer-section {
  margin-bottom: 24px;
}

.timer-bar {
  width: 100%;
  height: 4px;
  background: rgba(139, 92, 246, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: 12px;
}
.timer-bar-fill {
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent), #e879f9);
  border-radius: var(--radius-full);
  transition: width 1s linear;
  box-shadow: 0 0 12px var(--color-primary-glow);
}
.timer-bar-fill.warning {
  background: linear-gradient(90deg, var(--color-warning), var(--color-error));
  box-shadow: 0 0 12px var(--color-error-glow);
}

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

.timer-label {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.timer-countdown {
  font-size: 0.88rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--color-primary-light);
}
.timer-countdown.warning {
  color: var(--color-error);
}

/* Circular Timer */
.circular-timer {
  position: relative;
  width: 100px;
  height: 100px;
  margin: 0 auto;
}

.timer-svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.timer-track {
  fill: none;
  stroke: rgba(139, 92, 246, 0.06);
  stroke-width: 4;
}

.timer-progress {
  fill: none;
  stroke: var(--color-primary);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 339.292;
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 1s linear, stroke 0.3s ease;
  filter: drop-shadow(0 0 6px var(--color-primary-glow));
}
.timer-progress.warning {
  stroke: var(--color-error);
  filter: drop-shadow(0 0 6px var(--color-error-glow));
}

.timer-inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.timer-seconds {
  font-size: 1.6rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-primary);
  line-height: 1;
}
.timer-seconds.warning {
  color: var(--color-error);
}

.timer-unit {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}

/* Save Key Button */
.save-key-section {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.btn-save-key {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 14px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: rgba(139, 92, 246, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  justify-content: center;
}
.btn-save-key:hover {
  color: var(--color-primary-light);
  background: rgba(139, 92, 246, 0.1);
  border-color: var(--border-active);
  transform: translateY(-1px);
}
.btn-save-key.saved {
  color: var(--color-success);
  border-color: rgba(16, 185, 129, 0.2);
  background: rgba(16, 185, 129, 0.06);
}

/* =============================================
   SAVED KEYS SECTION
   ============================================= */
.saved-keys-section {
  padding: 60px 32px 40px;
  position: relative;
  z-index: 1;
}

.section-title {
  text-align: center;
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #f5f3ff, var(--color-primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-title svg {
  display: inline-block;
  vertical-align: middle;
  margin-right: 8px;
  stroke: var(--color-primary-light);
}

.section-subtitle {
  text-align: center;
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.saved-keys-card {
  max-width: 620px;
  margin: 0 auto;
  background: var(--bg-card);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  position: relative;
}
.saved-keys-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

.saved-keys-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 48px 20px;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.saved-keys-empty.hidden {
  display: none;
}

.saved-keys-hint {
  font-size: 0.8rem;
  opacity: 0.6;
}

.saved-keys-list {
  padding: 0;
}

.saved-key-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(139, 92, 246, 0.04);
  transition: background var(--transition-fast);
  cursor: pointer;
}
.saved-key-item:hover {
  background: rgba(139, 92, 246, 0.04);
}
.saved-key-item:last-child {
  border-bottom: none;
}

.saved-key-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(168, 85, 247, 0.06));
  border: 1px solid var(--border-active);
  border-radius: var(--radius-sm);
  color: var(--color-primary-light);
  flex-shrink: 0;
  font-size: 0.9rem;
  font-weight: 700;
}

.saved-key-info {
  flex: 1;
  min-width: 0;
}

.saved-key-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.saved-key-secret {
  font-size: 0.78rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  letter-spacing: 0.02em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.saved-key-actions {
  display: flex;
  gap: 6px;
}

.saved-key-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  transition: all var(--transition-fast);
  background: transparent;
}
.saved-key-btn:hover {
  color: var(--color-primary-light);
  background: rgba(139, 92, 246, 0.1);
}
.saved-key-btn.delete:hover {
  color: var(--color-error);
  background: rgba(239, 68, 68, 0.1);
}

/* =============================================
   HOW IT WORKS
   ============================================= */
.how-it-works {
  padding: 60px 32px 80px;
  position: relative;
  z-index: 1;
}

.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 920px;
  margin: 0 auto;
}

.how-card {
  position: relative;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition-normal);
  overflow: hidden;
}
.how-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.04), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}
.how-card:hover {
  border-color: var(--border-active);
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow-strong);
}
.how-card:hover::before {
  opacity: 1;
}

.how-card-number {
  position: absolute;
  top: 10px;
  right: 14px;
  font-size: 3.5rem;
  font-weight: 900;
  color: rgba(139, 92, 246, 0.04);
  line-height: 1;
}

.how-card-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(168, 85, 247, 0.06));
  border: 1px solid var(--border-active);
  border-radius: var(--radius-md);
  color: var(--color-primary-light);
  position: relative;
  z-index: 1;
}

.how-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}

.how-card-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  position: relative;
  z-index: 1;
}

/* =============================================
   FEATURES
   ============================================= */
.features-section {
  padding: 40px 32px 80px;
  position: relative;
  z-index: 1;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 920px;
  margin: 0 auto;
}

.feature-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.3), transparent);
  opacity: 0;
  transition: opacity var(--transition-normal);
}
.feature-card:hover {
  border-color: var(--border-active);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}
.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(168, 85, 247, 0.06));
  border: 1px solid var(--border-active);
  border-radius: var(--radius-md);
  color: var(--color-primary-light);
}

.feature-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.feature-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  padding: 44px 32px;
  border-top: 1px solid var(--border-color);
  position: relative;
  background: rgba(9, 9, 11, 0.5);
}

.footer-container {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 24px;
}

.social-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  border: 1px solid transparent;
}

.social-whatsapp {
  background: rgba(37, 211, 102, 0.08);
  color: #25d366;
  border-color: rgba(37, 211, 102, 0.18);
}
.social-whatsapp:hover {
  background: rgba(37, 211, 102, 0.18);
  box-shadow: 0 0 35px rgba(37, 211, 102, 0.18);
  transform: translateY(-2px);
}

.social-facebook {
  background: rgba(24, 119, 242, 0.08);
  color: #1877f2;
  border-color: rgba(24, 119, 242, 0.18);
}
.social-facebook:hover {
  background: rgba(24, 119, 242, 0.18);
  box-shadow: 0 0 35px rgba(24, 119, 242, 0.18);
  transform: translateY(-2px);
}

.footer-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-color), transparent);
  margin-bottom: 20px;
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.footer-tagline {
  font-size: 0.78rem;
  color: var(--text-muted);
  opacity: 0.5;
}

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

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.75);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

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

@keyframes digitPop {
  0% {
    transform: scale(0.5);
    opacity: 0;
  }
  60% {
    transform: scale(1.15);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes glowPulse {
  0%, 100% {
    box-shadow: 0 0 20px var(--color-primary-glow);
  }
  50% {
    box-shadow: 0 0 40px var(--color-primary-glow), 0 0 60px rgba(139, 92, 246, 0.1);
  }
}

/* Particle dots */
.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0;
  animation: particleFloat 8s ease-in-out infinite;
}

@keyframes particleFloat {
  0% {
    opacity: 0;
    transform: translateY(100px);
  }
  20% {
    opacity: 0.6;
  }
  80% {
    opacity: 0.3;
  }
  100% {
    opacity: 0;
    transform: translateY(-200px);
  }
}

/* =============================================
   TOAST / NOTIFICATION
   ============================================= */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: 14px 28px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-full);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  box-shadow: var(--shadow-card), var(--shadow-glow);
  z-index: 2000;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}
.toast.visible {
  transform: translateX(-50%) translateY(0);
}
.toast.success {
  border-color: rgba(16, 185, 129, 0.3);
}
.toast.error {
  border-color: rgba(239, 68, 68, 0.3);
}

/* =============================================
   SAVE KEY MODAL
   ============================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 1500;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.active {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.modal {
  background: var(--bg-card);
  backdrop-filter: blur(28px);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-xl);
  padding: 32px;
  max-width: 420px;
  width: 100%;
  box-shadow: var(--shadow-card), var(--shadow-glow-strong);
  animation: scaleIn 0.3s ease;
}

.modal-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.modal-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.modal-input {
  width: 100%;
  padding: 14px 18px;
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--bg-input);
  border: 1px solid rgba(139, 92, 246, 0.1);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  margin-bottom: 16px;
}
.modal-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-subtle);
}

.modal-actions {
  display: flex;
  gap: 12px;
}

.btn-modal-cancel {
  flex: 1;
  padding: 12px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: rgba(139, 92, 246, 0.06);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}
.btn-modal-cancel:hover {
  color: var(--text-primary);
  background: rgba(139, 92, 246, 0.12);
}

.btn-modal-save {
  flex: 1;
  padding: 12px;
  font-size: 0.9rem;
  font-weight: 600;
  color: white;
  background: linear-gradient(135deg, var(--color-primary), #7c3aed);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}
.btn-modal-save:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--color-primary-glow);
}

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

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 768px) {
  .navbar {
    padding: 12px 16px;
  }
  .navbar-title {
    font-size: 1rem;
  }
  .navbar-link {
    display: none;
  }
  .navbar-cta {
    padding: 8px 14px;
    font-size: 0.8rem;
  }

  .hero {
    padding: 130px 20px 60px;
  }
  .hero-title {
    font-size: 1.8rem;
  }
  .hero-subtitle {
    font-size: 0.95rem;
  }
  .hero-stats {
    gap: 16px;
    padding: 12px 20px;
  }

  .generator-section {
    padding: 0 16px 60px;
  }
  .generator-card {
    padding: 28px 20px;
  }

  .otp-digit {
    width: 48px;
    height: 64px;
    font-size: 1.8rem;
  }

  .otp-code-wrapper {
    flex-direction: column;
    gap: 14px;
  }

  .how-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .how-it-works {
    padding: 40px 16px 60px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
  .features-section {
    padding: 40px 16px 60px;
  }

  .saved-keys-section {
    padding: 40px 16px 30px;
  }

  .footer {
    padding: 32px 16px;
  }
  .footer-social {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.5rem;
  }
  .generator-card {
    padding: 24px 16px;
  }
  .otp-digit {
    width: 40px;
    height: 56px;
    font-size: 1.5rem;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .hero-stats {
    gap: 12px;
    padding: 10px 16px;
    flex-wrap: wrap;
    justify-content: center;
  }
}