/* ==========================================================================
   ARINNA× LAB — Brand Check Style System
   Editorial Dark Aesthetic
   ========================================================================== */

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

:root {
  --bg: #08090B;
  --bg-elevated: #0E0F12;
  --bg-card: #131418;
  --text-primary: #F1F0EC;
  --text-secondary: #8A8D94;
  --text-tertiary: #5A5D64;
  --line: rgba(255, 255, 255, 0.10);
  --line-strong: rgba(255, 255, 255, 0.20);
  --accent-blue: #8098D8;
  --accent-solid: #B4BED2;
  --error: #FF5A5F;
  --error-bg: rgba(255, 90, 95, 0.10);

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --header-height: 68px;
  --max-width: 1080px;
  --page-padding: 48px;
  --page-padding-mobile: 20px;

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 0.2s;
  --duration-normal: 0.4s;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  background-color: var(--bg);
}

body {
  font-family: var(--font-main);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

button, input, select {
  font: inherit;
  color: inherit;
}

/* ---------- HEADER ---------- */
.lab-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(8, 9, 11, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--line);
  z-index: 100;
  display: flex;
  align-items: center;
  padding: 0 var(--page-padding);
}

.header-inner {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-x {
  color: var(--text-secondary);
  font-weight: 400;
}

.logo-badge {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  padding: 2px 6px;
  border-radius: 2px;
  background: var(--bg-elevated);
  border: 1px solid var(--line-strong);
  color: var(--accent-blue);
}

.header-link {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  transition: color var(--duration-fast) ease;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

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

.header-arrow {
  font-size: 12px;
}

/* ---------- MAIN LAYOUT ---------- */
.page-content {
  flex: 1;
  padding-top: calc(var(--header-height) + 40px);
  padding-bottom: 80px;
}

.lab-container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--page-padding);
}

/* ---------- HERO ---------- */
.lab-hero {
  margin-bottom: 56px;
}

.hero-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--text-secondary);
  margin-bottom: 20px;
  text-transform: uppercase;
}

.hero-title {
  font-size: clamp(38px, 6vw, 68px);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.02;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.hero-subtitle {
  font-size: clamp(15px, 1.8vw, 18px);
  color: var(--text-secondary);
  font-weight: 400;
}

/* ---------- EDITORIAL FORM ---------- */
.lab-card-section {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  padding: 44px;
  position: relative;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px 28px;
  margin-bottom: 40px;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--text-secondary);
  margin-bottom: 10px;
  text-transform: uppercase;
}

.required {
  color: var(--accent-blue);
}

.form-input, .form-select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 0;
  padding: 14px 16px;
  font-size: 15px;
  color: var(--text-primary);
  outline: none;
  transition: border-color var(--duration-fast) ease, background var(--duration-fast) ease;
}

.form-input:focus, .form-select:focus {
  border-color: var(--text-primary);
  background: var(--bg-card);
}

.form-input::placeholder {
  color: var(--text-tertiary);
}

.form-hint {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: 8px;
}

/* Select wrapper */
.select-wrapper {
  position: relative;
}

.form-select {
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  padding-right: 40px;
}

.form-select option {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.select-arrow {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--text-secondary);
  font-size: 12px;
}

/* Form Footer */
.form-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
  gap: 20px;
}

.analyze-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: var(--text-primary);
  color: var(--bg);
  border: none;
  padding: 16px 36px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: transform var(--duration-fast) ease, background var(--duration-fast) ease, opacity var(--duration-fast) ease;
}

.analyze-btn:hover {
  background: #ffffff;
  transform: translateY(-1px);
}

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

.btn-arrow {
  font-size: 14px;
  transition: transform var(--duration-fast) ease;
}

.analyze-btn:hover .btn-arrow {
  transform: translate(2px, -2px);
}

.form-note {
  font-size: 12px;
  color: var(--text-tertiary);
  letter-spacing: 0.02em;
}

/* ---------- LOADING VIEW ---------- */
.lab-loading-section {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  padding: 80px 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 400px;
}

.loading-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  max-width: 380px;
  width: 100%;
}

.loading-pulse-symbol {
  width: 72px;
  height: 72px;
  margin-bottom: 32px;
}

.loading-svg {
  width: 100%;
  height: 100%;
  animation: svg-pulse 2.4s ease-in-out infinite;
}

.loading-dot {
  animation: dot-pulse 1.6s ease-in-out infinite;
}

@keyframes svg-pulse {
  0%, 100% { opacity: 0.6; transform: scale(0.96); }
  50% { opacity: 1; transform: scale(1.04); }
}

@keyframes dot-pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

.loading-status-wrap {
  width: 100%;
}

.loading-message {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 16px;
  letter-spacing: 0.02em;
  min-height: 24px;
  transition: opacity 0.25s ease;
}

.loading-bar-track {
  width: 100%;
  height: 2px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
  position: relative;
}

.loading-bar-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 30%;
  background: var(--text-primary);
  animation: indeterminate-bar 1.8s cubic-bezier(0.65, 0, 0.35, 1) infinite;
}

@keyframes indeterminate-bar {
  0% { left: -30%; width: 30%; }
  50% { width: 60%; }
  100% { left: 100%; width: 30%; }
}

/* ---------- ALERT / ERROR TOAST ---------- */
.lab-alert {
  background: var(--error-bg);
  border: 1px solid rgba(255, 90, 95, 0.4);
  padding: 16px 20px;
  margin-bottom: 32px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.alert-icon {
  color: var(--error);
  font-size: 14px;
  font-weight: bold;
  margin-top: 2px;
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--error);
  margin-bottom: 2px;
  letter-spacing: 0.04em;
}

.alert-message {
  font-size: 14px;
  color: var(--text-primary);
  line-height: 1.5;
}

.alert-dismiss {
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 4px;
  font-size: 14px;
}

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

/* ---------- REPORT VIEW ---------- */
.lab-report-section {
  animation: fadeIn 0.5s var(--ease-out);
}

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

.report-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line-strong);
  margin-bottom: 48px;
  flex-wrap: wrap;
  gap: 20px;
}

.report-tag {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: #10ec90;
  display: inline-block;
  margin-bottom: 8px;
}

.report-brand-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1.05;
  color: var(--text-primary);
}

.report-meta-info {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 6px;
}

.reset-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: 1px solid var(--line-strong);
  color: var(--text-secondary);
  padding: 10px 18px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  cursor: pointer;
  transition: color var(--duration-fast) ease, border-color var(--duration-fast) ease;
}

.reset-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-primary);
}

.reset-arrow {
  font-size: 13px;
}

/* Report Grid (4 sections) */
.report-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

.report-block {
  border-top: 1px solid var(--line);
  padding-top: 28px;
}

.report-block-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 20px;
}

.block-num {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--accent-blue);
}

.block-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--text-primary);
  text-transform: uppercase;
}

.snapshot-text {
  font-size: 17px;
  line-height: 1.7;
  color: var(--text-primary);
  font-weight: 400;
  max-width: 860px;
}

.report-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.report-list-item {
  position: relative;
  padding-left: 28px;
  font-size: 15px;
  line-height: 1.65;
  color: #D8DCE4;
}

.report-list-item::before {
  content: '—';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--text-secondary);
}

/* Report Footer */
.report-footer {
  margin-top: 64px;
  padding-top: 36px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.report-cta-text {
  font-size: 14px;
  color: var(--text-secondary);
}

.report-cta-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--text-primary);
  padding: 12px 0;
  border-bottom: 1px solid var(--line-strong);
  transition: border-color var(--duration-fast) ease, gap var(--duration-fast) ease;
}

.report-cta-link:hover {
  border-color: var(--text-primary);
  gap: 14px;
}

.cta-arrow {
  font-size: 13px;
}

/* ---------- SITE FOOTER ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 24px var(--page-padding);
}

.footer-inner {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-tertiary);
  letter-spacing: 0.04em;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 768px) {
  :root {
    --page-padding: 20px;
  }

  .lab-card-section {
    padding: 28px 20px;
  }

  .form-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .report-top-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .report-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-inner {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
}