:root {
  --bg: #FFFFFF;
  --accent: #0055FF;
  --text: #111827;
  --text-secondary: #4B5563;
  --input-bg: #F9FAFB;
  --radius: 16px;
}

body {
  margin: 0;
  background: #f3f4f6;
  font-family: 'Inter Tight', sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.app-frame {
  width: 375px;
  height: 812px;
  background: var(--bg);
  border-radius: 44px;
  padding: 56px 32px;
  display: flex;
  flex-direction: column;
  box-shadow: 0 12px 40px rgba(0,0,0,0.1);
}

.auth-header {
  margin-bottom: 48px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.auth-title {
  font-size: 34px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -1px;
  line-height: 1.1;
}

.auth-subtitle {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.5;
}

.form-container {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.label {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.input {
  width: 100%;
  padding: 18px;
  background: var(--input-bg);
  border: 1px solid #E5E7EB;
  border-radius: var(--radius);
  font-size: 16px;
  transition: all 0.2s ease;
}

.input:focus {
  outline: none;
  border-color: var(--accent);
  background: white;
  box-shadow: 0 0 0 4px rgba(0, 85, 255, 0.05);
}

.btn-auth {
  width: 100%;
  padding: 20px;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 16px;
  margin-top: 8px;
  cursor: pointer;
  transition: transform 0.2s;
}

.btn-auth:active {
  transform: scale(0.98);
}

.divider-container {
  display: flex;
  align-items: center;
  margin: 36px 0;
  gap: 16px;
}

.divider-line {
  flex: 1;
  height: 1px;
  background: #E5E7EB;
}

.divider-text {
  color: #9CA3AF;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
}

.social-btn {
  width: 100%;
  padding: 18px;
  background: white;
  border: 1px solid #E5E7EB;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.social-btn:hover {
  background: #F9FAFB;
}