/* =====================================================
   VISION AI LOGIN — Professional Design System
   Modern, Clean, Accessible
   ===================================================== */

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

:root {
  --bg:          #ffffff;
  --bg-card:     #ffffff;
  --bg-input:    #f8f9fa;
  --border:      #e5e7eb;
  --border-focus:#6366f1;
  --primary:     #6366f1;
  --primary-dark:#4f46e5;
  --primary-glow:rgba(99, 102, 241, 0.15);
  --accent:      #8b5cf6;
  --text:        #1e293b;
  --text-secondary:#475569;
  --text-muted:  #94a3b8;
  --success:     #22c55e;
  --error:       #ef4444;
  --radius:      16px;
  --radius-sm:   12px;
  --shadow:      0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg:   0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --font:        'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html, body { 
  height: 100%; 
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  font-family: var(--font); 
  color: var(--text);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.login-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  overflow: hidden;
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
}

.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.3;
  animation: float 25s ease-in-out infinite;
}

.bg-orb-1 {
  width: 500px;
  height: 500px;
  background: #6366f1;
  top: -150px;
  left: -150px;
  animation-delay: 0s;
}

.bg-orb-2 {
  width: 600px;
  height: 600px;
  background: #8b5cf6;
  bottom: -200px;
  right: -200px;
  animation-delay: 7s;
}

.bg-orb-3 {
  width: 400px;
  height: 400px;
  background: #ec4899;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 14s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(40px, -40px) scale(1.1); }
  50% { transform: translate(-30px, 30px) scale(0.9); }
  75% { transform: translate(30px, 40px) scale(1.05); }
}

.login-container {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(30px);
  border-radius: 28px;
  padding: 56px;
  max-width: 500px;
  width: 100%;
  box-shadow: 
    0 25px 50px -12px rgba(0, 0, 0, 0.25),
    0 0 0 1px rgba(255, 255, 255, 0.1);
  animation: slideUp 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.login-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent), #ec4899);
  opacity: 0.8;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.login-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 32px;
}

.logo-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 2rem;
  color: white;
  box-shadow: 0 10px 30px var(--primary-glow);
  position: relative;
  overflow: hidden;
}

.logo-icon::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  animation: shine 3s infinite;
}

@keyframes shine {
  0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
  100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

.logo-text {
  font-size: 2rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  color: var(--text);
}

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

.login-header {
  text-align: center;
  margin-bottom: 32px;
}

.login-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.login-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(76, 175, 80, 0.1);
  border: 1px solid rgba(76, 175, 80, 0.3);
  border-radius: 24px;
  padding: 8px 16px;
  margin-bottom: 24px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--success);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse 2s infinite;
}

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

.google-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: white;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 24px;
  font-family: var(--font);
}

.google-btn:hover {
  border-color: #4285F4;
  background: #f8fbff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(66, 133, 244, 0.2);
}

.google-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(66, 133, 244, 0.2);
}

.google-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 24px 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.form-input {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-input);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: var(--font);
  color: var(--text);
  transition: all 0.2s;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

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

.submit-btn {
  width: 100%;
  padding: 16px 28px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1.05rem;
  font-weight: 700;
  color: white;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 14px var(--primary-glow);
  position: relative;
  overflow: hidden;
}

.submit-btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.submit-btn:hover::before {
  left: 100%;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--primary-glow);
}

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

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.login-links {
  text-align: center;
  margin-top: 24px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.login-links a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s;
}

.login-links a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.error-message {
  display: none;
  padding: 12px 16px;
  background: rgba(244, 67, 54, 0.1);
  border: 1px solid rgba(244, 67, 54, 0.3);
  border-radius: var(--radius);
  color: #f44336;
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.error-message.show {
  display: block;
  animation: shake 0.4s;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  75% { transform: translateX(10px); }
}

.success-message {
  display: none;
  padding: 12px 16px;
  background: rgba(76, 175, 80, 0.1);
  border: 1px solid rgba(76, 175, 80, 0.3);
  border-radius: var(--radius);
  color: var(--success);
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.success-message.show {
  display: block;
}

@media (max-width: 600px) {
  .login-card {
    padding: 32px 24px;
  }

  .login-title {
    font-size: 1.3rem;
  }
}