/* ═══════════════════════════════════════════════════════════════════════════
   Certificate Verification Hub — Public Stylesheet
   Premium dark glassmorphism design
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Google Fonts ────────────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── CSS Custom Properties ──────────────────────────────────────────────── */
:root {
  /* Color Palette */
  --bg-primary: #f8fafc;
  --bg-surface: rgba(255, 255, 255, 0.8);
  --bg-surface-solid: #ffffff;
  --bg-input: rgba(255, 255, 255, 0.95);
  --color-primary: #6366f1;
  --color-primary-hover: #4f46e5;
  --color-accent: #3b82f6;
  --color-success: #10b981;
  --color-warning: #d97706;
  --color-error: #dc2626;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border-color: rgba(15, 23, 42, 0.08);
  --border-hover: rgba(15, 23, 42, 0.15);

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Radii */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.15);
  --shadow-card: 0 8px 32px rgba(15, 23, 42, 0.04), 0 2px 8px rgba(15, 23, 42, 0.03);
  --shadow-input-focus: 0 0 0 3px rgba(99, 102, 241, 0.15), 0 0 20px rgba(99, 102, 241, 0.05);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── Background & Decorative Elements ───────────────────────────────────── */
.page-wrapper {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.bg-gradient-overlay {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% -20%, rgba(99, 102, 241, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(96, 165, 250, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(99, 102, 241, 0.06) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.deco-blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  pointer-events: none;
  z-index: 0;
}

.deco-blob--1 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.2), transparent 70%);
  top: -100px;
  right: -100px;
  animation: float 20s ease-in-out infinite;
}

.deco-blob--2 {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.15), transparent 70%);
  bottom: -80px;
  left: -80px;
  animation: float 25s ease-in-out infinite reverse;
}

.deco-blob--3 {
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.1), transparent 70%);
  top: 40%;
  left: 60%;
  animation: float 18s ease-in-out infinite 3s;
}

/* Grid pattern overlay */
.grid-pattern {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 184, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

/* ── Main Content Container ─────────────────────────────────────────────── */
.main-content {
  position: relative;
  z-index: 1;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: var(--space-2xl) var(--space-lg);
  padding-top: clamp(2rem, 8vh, 6rem);
}

/* ── Hero Section ───────────────────────────────────────────────────────── */
.hero {
  text-align: center;
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.8s ease-out;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.4rem 1rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-primary-hover);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
  animation: subtleFloat 6s ease-in-out infinite;
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  background: var(--color-success);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary), #a78bfa);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradientShift 8s ease-in-out infinite;
}

.hero__subtitle {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  color: var(--text-secondary);
  font-weight: 400;
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── Search Card ────────────────────────────────────────────────────────── */
.search-card {
  width: 100%;
  max-width: 700px;
  background: var(--bg-surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-card);
  margin-bottom: var(--space-xl);
  animation: fadeInUp 0.8s ease-out 0.2s both;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.search-card:hover {
  border-color: var(--border-hover);
}

.search-card:focus-within {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.search-form {
  display: flex;
  gap: var(--space-md);
  align-items: stretch;
}

.search-hint-text {
  font-size: 0.8rem;
  color: var(--color-accent);
  margin-top: 0.6rem;
  text-align: left;
  padding-left: 0.25rem;
  font-weight: 500;
  opacity: 0.85;
}

.search-input-wrapper {
  flex: 1;
  position: relative;
}

.search-input-wrapper .search-icon {
  position: absolute;
  left: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
  transition: color var(--transition-base);
}

.search-input {
  width: 100%;
  padding: 1rem 1rem 1rem 3rem;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 400;
  outline: none;
  transition: all var(--transition-base);
}

.search-input::placeholder {
  color: var(--text-muted);
  font-weight: 400;
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-input-focus);
  background: #ffffff;
}

.search-input:focus + .search-icon {
  color: var(--color-primary-hover);
}

.search-input.shake {
  animation: shake 0.5s cubic-bezier(0.36, 0.07, 0.19, 0.97);
  border-color: var(--color-error);
}

.search-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 1rem 1.75rem;
  background: linear-gradient(135deg, var(--color-primary), #4f46e5);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.search-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.search-btn:hover {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4), 0 0 40px rgba(99, 102, 241, 0.15);
}

.search-btn:hover::before {
  opacity: 1;
}

.search-btn:active {
  transform: translateY(0) scale(0.98);
}

.search-btn svg {
  width: 18px;
  height: 18px;
}

/* ── Loading State ──────────────────────────────────────────────────────── */
.loading-indicator {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-2xl);
  animation: fadeInUp 0.3s ease-out;
}

.loading-indicator.visible {
  display: flex;
}

.loading-dots {
  display: flex;
  gap: 8px;
}

.loading-dots span {
  width: 10px;
  height: 10px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: loadingPulse 1.4s ease-in-out infinite;
}

.loading-dots span:nth-child(2) {
  animation-delay: 0.2s;
}

.loading-dots span:nth-child(3) {
  animation-delay: 0.4s;
}

.loading-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* ── Results Section ────────────────────────────────────────────────────── */
.results-area {
  display: none;
  width: 100%;
  max-width: 700px;
}

.results-area.visible {
  display: block;
  animation: fadeInUp 0.6s ease-out;
}

.result-card {
  background: var(--bg-surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.result-card__header {
  padding: var(--space-xl) var(--space-xl) var(--space-lg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.result-card__company {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.result-card__cert-no {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
  font-family: 'SF Mono', 'Fira Code', monospace;
}

/* ── Status Badges ──────────────────────────────────────────────────────── */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  white-space: nowrap;
}

.status-badge::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-badge.status-active {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-badge.status-active::before {
  background: var(--color-success);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
}

.status-badge.status-expired {
  background: rgba(239, 68, 68, 0.12);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.status-badge.status-expired::before {
  background: var(--color-error);
}

.status-badge.status-suspended {
  background: rgba(245, 158, 11, 0.12);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.status-badge.status-suspended::before {
  background: var(--color-warning);
}

.status-badge.status-revoked {
  background: rgba(239, 68, 68, 0.12);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.status-badge.status-revoked::before {
  background: var(--color-error);
}

/* ── Result Details Grid ────────────────────────────────────────────────── */
.result-details {
  padding: var(--space-lg) var(--space-xl);
}

.detail-row {
  display: flex;
  align-items: flex-start;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border-color);
  gap: var(--space-md);
}

.detail-row:last-child {
  border-bottom: none;
}

.detail-row__label {
  flex-shrink: 0;
  width: 160px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding-top: 0.1rem;
}

.detail-row__value {
  flex: 1;
  font-size: 0.95rem;
  color: var(--text-primary);
  font-weight: 400;
  word-break: break-word;
}

/* ── Result Footer / Actions ────────────────────────────────────────────── */
.result-card__footer {
  padding: var(--space-lg) var(--space-xl);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}

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

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.55rem 1.2rem;
  background: rgba(96, 165, 250, 0.1);
  border: 1px solid rgba(96, 165, 250, 0.2);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-base);
}

.download-btn:hover {
  background: rgba(96, 165, 250, 0.18);
  border-color: rgba(96, 165, 250, 0.35);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(96, 165, 250, 0.15);
}

.download-btn svg {
  width: 16px;
  height: 16px;
}

/* ── No Results ─────────────────────────────────────────────────────────── */
.no-results {
  display: none;
  width: 100%;
  max-width: 700px;
}

.no-results.visible {
  display: block;
  animation: fadeInUp 0.5s ease-out;
}

.no-results__card {
  background: var(--bg-surface);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-3xl) var(--space-xl);
  text-align: center;
  box-shadow: var(--shadow-card);
}

.no-results__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  background: rgba(148, 163, 184, 0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.no-results__icon svg {
  width: 28px;
  height: 28px;
  opacity: 0.6;
}

.no-results__title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.no-results__text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 380px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── Error Message ──────────────────────────────────────────────────────── */
.error-message {
  display: none;
  width: 100%;
  max-width: 700px;
}

.error-message.visible {
  display: block;
  animation: fadeInUp 0.5s ease-out;
}

.error-message__card {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  color: #f87171;
  font-size: 0.95rem;
}

/* ── Footer ─────────────────────────────────────────────────────────────── */
.site-footer {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--space-xl) var(--space-lg);
  margin-top: auto;
}

.site-footer__text {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.site-footer__link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  margin-left: var(--space-md);
  transition: color var(--transition-base);
  position: relative;
}

.site-footer__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}

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

.site-footer__link:hover::after {
  width: 100%;
}

/* ═══════════════════════════════════════════════════════════════════════════
   Animations
   ═══════════════════════════════════════════════════════════════════════════ */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes subtleFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(15px, -20px) scale(1.05);
  }
  66% {
    transform: translate(-10px, 10px) scale(0.95);
  }
}

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

@keyframes loadingPulse {
  0%, 80%, 100% {
    transform: scale(0.6);
    opacity: 0.4;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes gradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
  20%, 40%, 60%, 80% { transform: translateX(4px); }
}

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

/* ═══════════════════════════════════════════════════════════════════════════
   Responsive Design
   ═══════════════════════════════════════════════════════════════════════════ */

@media (max-width: 640px) {
  .main-content {
    padding: var(--space-xl) var(--space-md);
    padding-top: 2rem;
  }

  .hero__title {
    font-size: 1.85rem;
  }

  .hero__subtitle {
    font-size: 0.9rem;
  }

  .search-card {
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
  }

  .search-form {
    flex-direction: column;
  }

  .search-btn {
    width: 100%;
    justify-content: center;
    padding: 0.9rem;
  }

  .result-card__header {
    flex-direction: column;
    padding: var(--space-lg);
  }

  .result-details {
    padding: var(--space-md) var(--space-lg);
  }

  .detail-row {
    flex-direction: column;
    gap: 0.25rem;
  }

  .detail-row__label {
    width: auto;
  }

  .result-card__footer {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-lg);
  }

  .deco-blob {
    display: none;
  }
}

@media (max-width: 380px) {
  .hero__badge {
    font-size: 0.7rem;
    padding: 0.3rem 0.8rem;
  }

  .search-input {
    padding: 0.85rem 0.85rem 0.85rem 2.6rem;
    font-size: 0.9rem;
  }
}