/* ================================================================
   VibeSec — Premium Dark Landing Page
   Design: Dark glassmorphism, purple→cyan gradients, Inter font
   ================================================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-glass-hover: rgba(255, 255, 255, 0.15);

  --text-primary: #f0f0f5;
  --text-secondary: #9090a8;
  --text-muted: #5e5e78;

  --accent-purple: #8b5cf6;
  --accent-cyan: #06b6d4;
  --accent-red: #ef4444;
  --accent-orange: #f59e0b;
  --accent-green: #10b981;

  --gradient-primary: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  --gradient-glow: linear-gradient(135deg, rgba(139, 92, 246, 0.15), rgba(6, 182, 212, 0.15));
  --gradient-hero: radial-gradient(ellipse at 50% 0%, rgba(139, 92, 246, 0.12) 0%, transparent 60%);

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Outfit', var(--font-body);

  /* Spacing */
  --section-padding: 6rem 2rem;
  --card-padding: 2rem;
  --border-radius: 16px;
  --border-radius-sm: 10px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- 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-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

/* --- Utility Classes --- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.9rem;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.badge--critical {
  background: rgba(239, 68, 68, 0.12);
  color: var(--accent-red);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.badge--free {
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glass);
  transition: var(--transition-smooth);
}

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

.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
}

.nav__brand-icon {
  font-size: 1.5rem;
}

.nav__cta {
  padding: 0.55rem 1.4rem;
  background: var(--gradient-primary);
  border: none;
  border-radius: 100px;
  color: white;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.nav__cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
}

/* --- Hero Section --- */
.hero {
  padding: 10rem 2rem 6rem;
  text-align: center;
  position: relative;
  background: var(--gradient-hero);
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__badge {
  margin-bottom: 1.5rem;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.2rem;
  letter-spacing: -0.02em;
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 2.2rem;
  background: var(--gradient-primary);
  border: none;
  border-radius: 100px;
  color: white;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
}

.hero__cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(139, 92, 246, 0.4);
}

.hero__cta-arrow {
  transition: var(--transition-fast);
}

.hero__cta:hover .hero__cta-arrow {
  transform: translateX(3px);
}

.hero__proof {
  margin-top: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.hero__stat {
  text-align: center;
}

.hero__stat-number {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.hero__stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hero__divider {
  width: 1px;
  height: 36px;
  background: var(--border-glass);
}

/* --- Section Common --- */
.section {
  padding: var(--section-padding);
}

.section__label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-purple);
  margin-bottom: 0.75rem;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.section__desc {
  color: var(--text-secondary);
  max-width: 550px;
  margin-bottom: 3rem;
  font-size: 1.02rem;
  line-height: 1.7;
}

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

.section--centered .section__desc {
  margin-left: auto;
  margin-right: auto;
}

/* --- Problem Section --- */
.problem {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-glass);
  border-bottom: 1px solid var(--border-glass);
}

.problem__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.problem__quote {
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--border-radius);
  backdrop-filter: blur(10px);
  position: relative;
}

.problem__quote::before {
  content: '"';
  position: absolute;
  top: -0.2rem;
  left: 1rem;
  font-size: 4rem;
  font-family: Georgia, serif;
  color: var(--accent-purple);
  opacity: 0.3;
}

.problem__quote-text {
  font-size: 1.05rem;
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  line-height: 1.7;
  padding-top: 1rem;
}

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

.problem__stats {
  display: grid;
  gap: 1rem;
}

.problem__stat-card {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1.2rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
}

.problem__stat-card:hover {
  border-color: var(--border-glass-hover);
  background: var(--bg-card-hover);
}

.problem__stat-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
}

.problem__stat-value {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
}

.problem__stat-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* --- Steps Section --- */
.steps__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.step-card {
  padding: var(--card-padding);
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--border-radius);
  text-align: center;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.step-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: var(--transition-smooth);
}

.step-card:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-4px);
}

.step-card:hover::before {
  opacity: 1;
}

.step-card__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--gradient-glow);
  border: 1px solid var(--border-glass);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--accent-purple);
  margin-bottom: 1.2rem;
}

.step-card__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

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

/* --- Vulnerabilities Grid --- */
.vulns__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
}

.vuln-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.4rem 1.6rem;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-fast);
}

.vuln-card:hover {
  border-color: var(--border-glass-hover);
  background: var(--bg-card-hover);
}

.vuln-card__icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.vuln-card__title {
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.3rem;
}

.vuln-card__desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.vuln-card__severity {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 0.4rem;
}

.vuln-card__severity--critical {
  color: var(--accent-red);
}

.vuln-card__severity--high {
  color: var(--accent-orange);
}

.vuln-card__severity--medium {
  color: #eab308;
}

/* --- Form Section --- */
.form-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-glass);
}

.form-wrapper {
  max-width: 600px;
  margin: 0 auto;
  padding: 2.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--border-radius);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.form-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
}

.form__group {
  margin-bottom: 1.4rem;
}

.form__label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.45rem;
}

.form__label--required::after {
  content: ' *';
  color: var(--accent-red);
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  border-radius: var(--border-radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.92rem;
  transition: var(--transition-fast);
  outline: none;
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--text-muted);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  border-color: var(--accent-purple);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.form__select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239090a8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

.form__select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.form__textarea {
  resize: vertical;
  min-height: 80px;
}

.form__submit {
  width: 100%;
  padding: 0.9rem;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--border-radius-sm);
  color: white;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  margin-top: 0.5rem;
}

.form__submit:hover {
  box-shadow: 0 6px 25px rgba(139, 92, 246, 0.4);
  transform: translateY(-1px);
}

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

.form__note {
  text-align: center;
  margin-top: 1rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Success state */
.form__success {
  display: none;
  text-align: center;
  padding: 2rem 0;
}

.form__success.is-visible {
  display: block;
}

.form__success-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.form__success-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.form__success-desc {
  color: var(--text-secondary);
  font-size: 0.92rem;
}

/* --- Footer --- */
.footer {
  padding: 3rem 2rem;
  text-align: center;
  border-top: 1px solid var(--border-glass);
}

.footer__brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

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

/* --- Responsive --- */

/* Tablet & small laptops */
@media (max-width: 768px) {
  :root {
    --section-padding: 3.5rem 1.25rem;
    --card-padding: 1.5rem;
  }

  .hero {
    padding: 7rem 1.25rem 3.5rem;
  }

  .hero__proof {
    gap: 1.2rem;
  }

  .hero__divider {
    display: none;
  }

  .problem__grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .steps__grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

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

  .form-wrapper {
    padding: 1.5rem;
  }

  .nav__cta {
    padding: 0.45rem 1rem;
    font-size: 0.78rem;
  }
}

/* Mobile phones */
@media (max-width: 480px) {
  :root {
    --section-padding: 3rem 1rem;
    --card-padding: 1.25rem;
  }

  .container {
    padding: 0 1rem;
  }

  .hero {
    padding: 6.5rem 1rem 3rem;
  }

  .hero__title {
    font-size: 1.75rem;
    line-height: 1.2;
  }

  .hero__subtitle {
    font-size: 0.92rem;
    margin-bottom: 1.8rem;
  }

  .hero__cta {
    padding: 0.8rem 1.8rem;
    font-size: 0.95rem;
    width: 100%;
    justify-content: center;
  }

  .hero__proof {
    flex-direction: column;
    gap: 0.8rem;
    margin-top: 2rem;
  }

  .hero__stat {
    display: flex;
    align-items: center;
    gap: 0.6rem;
  }

  .hero__stat-number {
    font-size: 1.3rem;
  }

  .hero__stat-label {
    font-size: 0.72rem;
  }

  .section__title {
    font-size: 1.4rem;
  }

  .section__desc {
    font-size: 0.9rem;
    margin-bottom: 2rem;
  }

  .problem__quote {
    padding: 1.5rem;
  }

  .problem__quote-text {
    font-size: 0.92rem;
  }

  .problem__stat-card {
    padding: 1rem 1.2rem;
    gap: 0.8rem;
  }

  .problem__stat-icon {
    font-size: 1.4rem;
  }

  .problem__stat-value {
    font-size: 1.1rem;
  }

  .problem__stat-desc {
    font-size: 0.78rem;
  }

  .step-card__title {
    font-size: 1.05rem;
  }

  .step-card__desc {
    font-size: 0.85rem;
  }

  .vuln-card {
    padding: 1.1rem 1.2rem;
    gap: 0.8rem;
  }

  .vuln-card__icon {
    font-size: 1.2rem;
  }

  .vuln-card__title {
    font-size: 0.88rem;
  }

  .vuln-card__desc {
    font-size: 0.78rem;
  }

  .form-wrapper {
    padding: 1.25rem;
  }

  .form__submit {
    font-size: 0.92rem;
    padding: 0.8rem;
  }

  .footer {
    padding: 2rem 1rem;
  }
}

/* Extra-small devices (small phones) */
@media (max-width: 360px) {
  .hero {
    padding: 6rem 0.75rem 2.5rem;
  }

  .hero__title {
    font-size: 1.5rem;
  }

  .nav__brand {
    font-size: 1.05rem;
  }

  .nav__cta {
    padding: 0.4rem 0.8rem;
    font-size: 0.72rem;
  }

  .badge {
    font-size: 0.68rem;
    padding: 0.3rem 0.7rem;
  }
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

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

.animate-in {
  animation: fadeInUp 0.6s var(--transition-smooth) forwards;
  opacity: 0;
}

.animate-in:nth-child(2) {
  animation-delay: 0.1s;
}

.animate-in:nth-child(3) {
  animation-delay: 0.2s;
}

.animate-in:nth-child(4) {
  animation-delay: 0.3s;
}

.animate-in:nth-child(5) {
  animation-delay: 0.4s;
}