/* style.css — artefactFX Design System
   Art direction: Audio tech / music production — clean, precise, professional
   Accent: Deep violet (#6C5CE7) — creative yet technical
   Secondary: Emerald (#00B894) — success/clean states
*/

/* === FONTS === */
@import url('https://api.fontshare.com/v2/css?f[]=general-sans@400,500,600,700&f[]=cabinet-grotesk@500,700,800&display=swap');

/* === DESIGN TOKENS === */
:root, [data-theme="light"] {
  --font-body: 'General Sans', 'Inter', sans-serif;
  --font-display: 'Cabinet Grotesk', 'General Sans', sans-serif;

  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);

  /* Spacing (4px base) */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Surfaces — cool gray with slight warmth */
  --color-bg:              #f8f9fc;
  --color-surface:         #ffffff;
  --color-surface-2:       #f3f4f8;
  --color-surface-offset:  #edeef3;
  --color-divider:         #e2e4eb;
  --color-border:          #d5d7e0;

  /* Text */
  --color-text:            #1a1a2e;
  --color-text-muted:      #6b6d7b;
  --color-text-faint:      #a0a2ad;
  --color-text-inverse:    #ffffff;

  /* Primary — Deep Violet */
  --color-primary:         #6C5CE7;
  --color-primary-hover:   #5a4bd4;
  --color-primary-active:  #4a3cc2;
  --color-primary-light:   #e8e5fd;
  --color-primary-glow:    rgba(108, 92, 231, 0.12);

  /* Success — Emerald */
  --color-success:         #00B894;
  --color-success-hover:   #00a382;
  --color-success-light:   #e0f8f1;

  /* Warning */
  --color-warning:         #f59e0b;
  --color-warning-light:   #fef3c7;

  /* Error */
  --color-error:           #ef4444;
  --color-error-hover:     #dc2626;
  --color-error-light:     #fee2e2;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 300ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.06);
  --shadow-md: 0 4px 16px rgba(26, 26, 46, 0.08);
  --shadow-lg: 0 12px 40px rgba(26, 26, 46, 0.12);
  --shadow-primary: 0 4px 20px rgba(108, 92, 231, 0.25);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
}

/* === DARK MODE === */
[data-theme="dark"] {
  --color-bg:              #0f0f1a;
  --color-surface:         #1a1a2e;
  --color-surface-2:       #16162b;
  --color-surface-offset:  #1e1e36;
  --color-divider:         #2a2a45;
  --color-border:          #35355a;

  --color-text:            #e4e4ee;
  --color-text-muted:      #9595a8;
  --color-text-faint:      #5c5c72;
  --color-text-inverse:    #0f0f1a;

  --color-primary:         #8b7ff0;
  --color-primary-hover:   #a09af5;
  --color-primary-active:  #6C5CE7;
  --color-primary-light:   #1e1a3a;
  --color-primary-glow:    rgba(139, 127, 240, 0.15);

  --color-success:         #34d399;
  --color-success-hover:   #10b981;
  --color-success-light:   #0f2a22;

  --color-warning:         #fbbf24;
  --color-warning-light:   #2a2410;

  --color-error:           #f87171;
  --color-error-hover:     #ef4444;
  --color-error-light:     #2a1010;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-primary: 0 4px 20px rgba(139, 127, 240, 0.3);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:              #0f0f1a;
    --color-surface:         #1a1a2e;
    --color-surface-2:       #16162b;
    --color-surface-offset:  #1e1e36;
    --color-divider:         #2a2a45;
    --color-border:          #35355a;
    --color-text:            #e4e4ee;
    --color-text-muted:      #9595a8;
    --color-text-faint:      #5c5c72;
    --color-text-inverse:    #0f0f1a;
    --color-primary:         #8b7ff0;
    --color-primary-hover:   #a09af5;
    --color-primary-active:  #6C5CE7;
    --color-primary-light:   #1e1a3a;
    --color-primary-glow:    rgba(139, 127, 240, 0.15);
    --color-success:         #34d399;
    --color-success-hover:   #10b981;
    --color-success-light:   #0f2a22;
    --color-warning:         #fbbf24;
    --color-warning-light:   #2a2410;
    --color-error:           #f87171;
    --color-error-hover:     #ef4444;
    --color-error-light:     #2a1010;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
    --shadow-primary: 0 4px 20px rgba(139, 127, 240, 0.3);
  }
}


/* === GLOBAL STYLES === */

body {
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover {
  color: var(--color-primary-hover);
}

/* === HEADER / NAV === */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-divider);
  padding: var(--space-3) var(--space-6);
}

.nav-container {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
}

.nav-logo svg {
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  list-style: none;
}

.nav-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
}

.nav-links a:hover {
  color: var(--color-text);
}

.nav-links a.active {
  color: var(--color-primary);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.mobile-menu-btn {
  display: none;
  color: var(--color-text);
  padding: var(--space-1);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-divider);
    padding: var(--space-4);
    box-shadow: var(--shadow-md);
  }
  .mobile-menu-btn {
    display: flex;
  }
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  white-space: nowrap;
  line-height: 1.4;
  min-height: 44px;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-primary);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(108, 92, 231, 0.35);
}
.btn-primary:active {
  background: var(--color-primary-active);
  transform: translateY(0);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover {
  background: var(--color-surface-2);
  border-color: var(--color-primary);
}

.btn-success {
  background: var(--color-success);
  color: white;
}
.btn-success:hover {
  background: var(--color-success-hover);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  min-height: 36px;
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  border-radius: var(--radius-xl);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* === CARDS === */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.card-elevated {
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

/* === UPLOAD ZONE === */
.upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-12) var(--space-8);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-slow);
  background: var(--color-surface-2);
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.upload-zone-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-4);
  color: var(--color-primary);
}

.upload-zone-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.upload-zone-subtitle {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* === RESULTS === */
.result-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-top: var(--space-6);
}

.probability-display {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-2);
}

.probability-circle {
  position: relative;
  width: 140px;
  height: 140px;
}

.probability-circle svg {
  transform: rotate(-90deg);
}

.probability-value {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--color-text);
}

.probability-label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.result-item {
  background: var(--color-surface-2);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.result-item-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-1);
}

.result-item-value {
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--color-text);
}

/* === FORM INPUTS === */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}

.form-input {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  font-size: var(--text-base);
  color: var(--color-text);
  outline: none;
  min-height: 44px;
}

.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
}

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

.form-error {
  color: var(--color-error);
  font-size: var(--text-xs);
}

/* === HERO === */
.hero {
  padding: clamp(var(--space-12), 8vw, var(--space-32)) var(--space-6);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-content {
  max-width: var(--content-default);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-3xl);
  color: var(--color-text);
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.hero h1 .accent {
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto var(--space-8);
  line-height: 1.6;
}

.hero-ctas {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* Hero background effect */
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 140%;
  height: 200%;
  background: radial-gradient(
    ellipse at 50% 0%,
    var(--color-primary-glow) 0%,
    transparent 60%
  );
  pointer-events: none;
}

/* === SECTIONS === */
.section {
  padding: clamp(var(--space-12), 6vw, var(--space-24)) var(--space-6);
}

.section-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  text-align: center;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.section-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  font-size: var(--text-base);
  max-width: 550px;
  margin: 0 auto var(--space-10);
}

/* === HOW IT WORKS === */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

@media (max-width: 768px) {
  .steps-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
}

.step-card {
  text-align: center;
  padding: var(--space-8) var(--space-6);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  position: relative;
}

.step-number {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.step-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.step-description {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* === FAQ === */
.faq-list {
  max-width: var(--content-narrow);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.faq-item {
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-text);
  cursor: pointer;
  text-align: left;
  background: none;
  border: none;
  min-height: 44px;
}

.faq-question:hover {
  background: var(--color-surface-2);
}

.faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-text-muted);
  transition: transform var(--transition-interactive);
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq-item.open .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 var(--space-5) var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  line-height: 1.7;
}

/* === FOOTER === */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--color-divider);
  padding: var(--space-8) var(--space-6);
  background: var(--color-surface-2);
}

.footer-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-text {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.footer-links {
  display: flex;
  gap: var(--space-4);
}

.footer-links a {
  color: var(--color-text-faint);
  font-size: var(--text-xs);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--color-text-muted);
}

/* === PAGE LAYOUT === */
.page-container {
  max-width: var(--content-default);
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
}

.page-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
  text-align: center;
  color: var(--color-text);
}

.page-subtitle {
  color: var(--color-text-muted);
  font-size: var(--text-base);
  text-align: center;
  margin-bottom: var(--space-8);
}

/* === LOADING SPINNER === */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-divider);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-12);
}

.loading-text {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  font-weight: 500;
}

/* === PROGRESS BAR === */
.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--color-surface-2);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-primary), var(--color-success));
  transition: width 0.5s ease;
}

/* === BADGE === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
}

.badge-free {
  background: var(--color-success-light);
  color: var(--color-success);
}

.badge-pro {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.badge-warning {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

/* === COMPARISON (Before/After) === */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-4);
  align-items: center;
  margin: var(--space-6) 0;
}

@media (max-width: 640px) {
  .comparison-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  .comparison-arrow {
    transform: rotate(90deg);
  }
}

.comparison-arrow {
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* === THEME TOGGLE === */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  cursor: pointer;
}

.theme-toggle:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

/* === AUTH PAGES === */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: calc(100dvh - 80px);
  padding: var(--space-6);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
}

.auth-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  text-align: center;
  margin-bottom: var(--space-6);
  color: var(--color-text);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.auth-footer {
  text-align: center;
  margin-top: var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.auth-footer a {
  color: var(--color-primary);
  font-weight: 600;
}

/* === ALERT === */
.alert {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  display: none;
}

.alert.show {
  display: block;
}

.alert-error {
  background: var(--color-error-light);
  color: var(--color-error);
  border: 1px solid color-mix(in srgb, var(--color-error) 20%, transparent);
}

.alert-success {
  background: var(--color-success-light);
  color: var(--color-success);
  border: 1px solid color-mix(in srgb, var(--color-success) 20%, transparent);
}

/* === CLEANING COUNTER === */
.cleanings-counter {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary-light);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
}

/* === WAVEFORM ANIMATION === */
.waveform {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 40px;
}

.waveform-bar {
  width: 4px;
  background: var(--color-primary);
  border-radius: 2px;
  animation: waveform 1.2s ease-in-out infinite;
}

.waveform-bar:nth-child(1) { animation-delay: 0s; height: 40%; }
.waveform-bar:nth-child(2) { animation-delay: 0.1s; height: 70%; }
.waveform-bar:nth-child(3) { animation-delay: 0.2s; height: 50%; }
.waveform-bar:nth-child(4) { animation-delay: 0.3s; height: 90%; }
.waveform-bar:nth-child(5) { animation-delay: 0.4s; height: 60%; }
.waveform-bar:nth-child(6) { animation-delay: 0.5s; height: 80%; }
.waveform-bar:nth-child(7) { animation-delay: 0.6s; height: 45%; }
.waveform-bar:nth-child(8) { animation-delay: 0.7s; height: 65%; }

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

/* === UTILITIES === */
.hidden { display: none !important; }
.text-center { text-align: center; }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.gap-4 { gap: var(--space-4); }
.flex-col { display: flex; flex-direction: column; }