:root {
  --primary-gradient: linear-gradient(135deg, #667eea, #764ba2);
  --secondary-gradient: linear-gradient(135deg, #f093fb, #f5576c);
  --accent-color: #667eea;
  --text-primary: #2d3748;
  --text-secondary: #718096;
  --white: #ffffff;
  --gray-100: #f7fafc;
  --gray-200: #edf2f7;
  --gray-300: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
}

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

body {
  font-family: 'Segoe UI', 'Roboto', sans-serif;
  height: 100vh;
  overflow: hidden;
}

.background-video {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  background: url('https://giffiles.alphacoders.com/853/85311.gif') center/cover no-repeat;
  filter: blur(2px) brightness(0.7);
  pointer-events: none;
}

.header-logo {
  position: fixed;
  top: 20px;
  left: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 1000;
}

.header-logo img {
  height: 50px;
  border-radius: 50%;
  border: 2px solid var(--accent-color);
  box-shadow: var(--shadow-md);
}

.header-logo span {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--white);
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

.login-container {
  display: flex;
  height: 100vh;
  width: 100%;
  position: relative;
  z-index: 1;
}

.branding-side {
  flex: 1;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.branding-content {
  color: var(--white);
  text-align: center;
  max-width: 500px;
  padding: 2rem;
  z-index: 2;
}

.hero-image {
  position: relative;
  height: 300px;
  margin: 2rem 0;
}

.memory-illustration,
.floating-memories {
  position: relative;
  width: 100%;
  height: 100%;
}

.memory-card {
  position: absolute;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 15px;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-lg);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.9rem;
  animation: float 6s ease-in-out infinite;
  transition: transform 0.3s ease;
}

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

.memory-card i {
  font-size: 1.5rem;
  color: var(--accent-color);
}

.card-1 { top: 10%; left: 10%; animation-delay: 0s; }
.card-2 { top: 20%; right: 15%; animation-delay: 1s; }
.card-3 { top: 50%; left: 5%; animation-delay: 2s; }
.card-4 { bottom: 20%; right: 10%; animation-delay: 3s; }
.card-5 { bottom: 10%; left: 20%; animation-delay: 4s; }

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0); }
  25% { transform: translateY(-10px) rotate(2deg); }
  50% { transform: translateY(-5px) rotate(-1deg); }
  75% { transform: translateY(-15px) rotate(1deg); }
}

.brand-message h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.brand-message p {
  font-size: 1.1rem;
  line-height: 1.6;
  opacity: 0.9;
}

.login-side {
  flex: 1;
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.login-form-container {
  width: 100%;
  max-width: 400px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-xl);
  border-radius: 22px;
  padding: 2.5rem 2rem;
}

.form-header {
  text-align: center;
  margin-bottom: 2rem;
}

.form-header h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
}

.form-header p {
  font-size: 1rem;
  color: var(--text-secondary);
}

.input-group {
  position: relative;
  margin-bottom: 1.5rem;
}

.input-group i {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
}

.input-group input {
  width: 100%;
  padding: 1rem 1rem 1rem 3rem;
  border: 2px solid var(--gray-200);
  border-radius: 12px;
  font-size: 1rem;
  background: var(--white);
  transition: border 0.3s, box-shadow 0.3s;
}

.input-group input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.input-group input::placeholder {
  color: var(--text-secondary);
}

.form-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
}

.remember-me {
  display: flex;
  align-items: center;
  gap: 6px;
}

.forgot-password {
  color: var(--accent-color);
  font-weight: 500;
  text-decoration: none;
}

.login-btn {
  width: 100%;
  padding: 1rem;
  background: var(--primary-gradient);
  color: var(--white);
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.login-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.signup-link {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.signup-link a {
  color: var(--accent-color);
  font-weight: 600;
  text-decoration: none;
}

@media (max-width: 768px) {
  .login-container {
    flex-direction: column;
  }

  .branding-side {
    height: 40vh;
  }

  .login-side {
    padding: 1rem;
  }

  .hero-image {
    height: 200px;
  }

  .memory-card {
    padding: 0.8rem;
    font-size: 0.8rem;
  }
}

@media (max-width: 480px) {
  .hero-image {
    height: 150px;
  }

  .memory-card {
    padding: 0.6rem;
    font-size: 0.7rem;
  }

  .memory-card i {
    font-size: 1rem;
  }

  .form-header h2 {
    font-size: 1.5rem;
  }

  .header-logo {
    top: 10px;
    left: 10px;
  }

  .header-logo img {
    height: 35px;
  }

  .header-logo span {
    font-size: 1rem;
  }
}