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

:root {
  /* Colors */
  --bg-primary: #0f0f0f;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --accent-primary: #7c3aed;
  --accent-secondary: #ec4899;
  --border-color: #333333;
  --success: #10b981;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
}

/* Header */
.header {
  text-align: center;
  margin-bottom: 60px;
  animation: fadeInDown 0.8s ease;
}

.header.results-header {
  margin-bottom: 40px;
}

.title {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -2px;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Page navigation */
.page-nav {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin: 24px 0 36px;
}

.page-nav .nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: all 0.2s ease;
}

.page-nav .nav-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  border-color: var(--border-color);
}

.title .highlight {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  font-weight: 300;
}

/* Upload Section */
.upload-section {
  display: flex;
  gap: 40px;
  margin-bottom: 60px;
  align-items: flex-start;
}

.upload-box {
  flex: 1;
  border: 2px dashed var(--border-color);
  border-radius: 16px;
  padding: 60px 40px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  background-color: var(--bg-secondary);
  position: relative;
}

.upload-box:hover {
  border-color: var(--accent-primary);
  background-color: var(--bg-tertiary);
  transform: translateY(-2px);
}

.upload-icon {
  width: 64px;
  height: 64px;
  color: var(--accent-primary);
  margin-bottom: 20px;
  opacity: 0.8;
}

.upload-box h2 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.upload-box p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Preview Section */
.preview-section {
  flex: 1;
  position: relative;
}

.preview-section img {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  animation: fadeInUp 0.6s ease;
}

/* Results Breakdown */
.results-breakdown {
  animation: fadeInUp 0.8s ease;
}

.percentage-bars {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 30px;
}

.bar-item {
  animation: slideIn 0.6s ease forwards;
  opacity: 0;
}

.bar-item:nth-child(1) {
  animation-delay: 0.1s;
}
.bar-item:nth-child(2) {
  animation-delay: 0.2s;
}
.bar-item:nth-child(3) {
  animation-delay: 0.3s;
}
.bar-item:nth-child(4) {
  animation-delay: 0.4s;
}
.bar-item:nth-child(5) {
  animation-delay: 0.5s;
}
.bar-item:nth-child(6) {
  animation-delay: 0.6s;
}

.bar-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 0.95rem;
}

.shape-name {
  font-weight: 600;
  color: var(--text-primary);
}

.percentage {
  color: var(--accent-primary);
  font-weight: 700;
}

.bar-container {
  width: 100%;
  height: 24px;
  background-color: var(--bg-secondary);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.bar-fill {
  height: 100%;
  transition: width 1.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  min-width: 2%;
}

/* Face Shapes Grid */
.face-shapes-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.face-shapes-grid .row {
  display: flex;
  justify-content: center;
  gap: 20px;
}

.face-shapes-grid .row:nth-child(1) {
  justify-content: center;
}

.face-shapes-grid .row:nth-child(2) {
  justify-content: space-around;
}

.face-shapes-grid .row:nth-child(3) {
  justify-content: space-between;
}

/* Blog */
.blog-section .blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.blog-card {
  position: relative;
  overflow: hidden;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.blog-card h3 {
  margin-bottom: 8px;
}

.blog-card .meta {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-bottom: 12px;
}

.blog-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.blog-card .read-more {
  display: inline-block;
  margin-top: 12px;
  color: var(--accent-primary);
  text-decoration: none;
}

.blog-card:hover {
  transform: translateY(-6px);
  background-color: var(--bg-tertiary);
}

.blog-card img {
  transition: transform 0.3s ease;
}

.blog-card:hover img {
  transform: scale(1.1);
}

.blog-card .slider {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  padding: 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.blog-card:hover .slider {
  transform: translateY(0);
}

.blog-card .slider h3 {
  font-size: 1rem;
  margin: 0;
}

.blog-card .slider .arrow {
  font-size: 1.5rem;
  font-weight: bold;
}

/* FAQ */
.faq-section .faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 16px 20px;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-weight: 600;
  cursor: pointer;
}

.faq-answer {
  padding: 12px 20px 18px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.faq-question[aria-expanded="true"] {
  background-color: rgba(124,58,237,0.06);
}

/* Site header & footer */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 28px;
}

.site-header .logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
}

.site-header .brand {
  font-size: 1.05rem;
}

.site-footer {
  border-top: 1px solid var(--border-color);
  margin-top: 60px;
  padding: 24px 0;
  background-color: transparent;
}

.site-footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-logo {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 700;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  margin: 0 8px;
}

.sep {
  color: var(--border-color);
}

.small {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 6px;
}

.shape-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 30px 20px;
  text-align: center;
  transition: all 0.3s ease;
  cursor: pointer;
}

.shape-card:hover {
  border-color: var(--accent-primary);
  background-color: var(--bg-tertiary);
  transform: translateY(-4px);
}

.shape-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 16px;
  border: 2px solid var(--accent-primary);
}

.shape-icon.oval {
  border-radius: 50% 40%;
}

.shape-icon.round {
  border-radius: 50%;
}

.shape-icon.square {
  border-radius: 8px;
}

.shape-icon.heart {
  border-radius: 50% 50% 50% 0%;
  transform: rotate(-45deg);
}

.shape-icon.oblong {
  border-radius: 40%;
  width: 60px;
  height: 100px;
}

.shape-icon.diamond {
  border-radius: 0%;
  transform: rotate(45deg);
}

.shape-card h4 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.shape-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Buttons */
.btn-secondary,
.btn-back {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.95rem;
  cursor: pointer;
  margin-top: 16px;
  transition: all 0.3s ease;
}

.btn-secondary:hover,
.btn-back:hover {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
}

.btn-back {
  display: block;
  width: 100%;
  padding: 14px;
  margin-top: 30px;
  font-weight: 600;
}

/* Steps Grid */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.step-box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  transition: transform 0.3s ease, background-color 0.3s ease;
}

.step-box:hover {
  transform: translateY(-4px);
  background-color: var(--bg-tertiary);
}

.step-image {
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 50%;
  margin-bottom: 16px;
}

/* Step Numbers */
.step-number {
  font-size: 2rem;
  font-weight: bold;
  color: var(--accent-primary);
  margin-bottom: 12px;
}

/* Animations */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  to {
    opacity: 1;
    transform: translateX(0);
  }
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 20px;
  }

  .title {
    font-size: 2.5rem;
  }

  .upload-section {
    flex-direction: column;
    gap: 20px;
  }

  .upload-box {
    padding: 40px 20px;
  }

  .face-shapes-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }

  .results-breakdown {
    padding: 0;
  }
}