@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --primary: #10b981; /* green matching 'sungreen' context */
  --primary-hover: #059669;
  --bg-color: #0f172a;
  --panel-bg: rgba(30, 41, 59, 0.7);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --input-bg: rgba(15, 23, 42, 0.6);
  --border-color: rgba(255, 255, 255, 0.1);
  --error: #ef4444;
  --success: #22c55e;
}

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

body {
  font-family: 'Inter', sans-serif;
  background: linear-gradient(135deg, var(--bg-color) 0%, #020617 100%);
  color: var(--text-main);
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  position: relative;
  overflow: hidden;
}

/* Background animated elements */
.blob {
  position: absolute;
  width: 500px;
  height: 500px;
  background: var(--primary);
  border-radius: 50%;
  filter: blur(150px);
  opacity: 0.15;
  z-index: 0;
  animation: float 10s infinite ease-in-out alternate;
}

.blob-1 { top: -100px; left: -100px; }
.blob-2 { bottom: -100px; right: -100px; background: #3b82f6; animation-delay: -5s; }

@keyframes float {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, 50px) scale(1.1); }
}

/* Glassmorphism panel */
.auth-container {
  background: var(--panel-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 3rem;
  width: 100%;
  max-width: 450px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  z-index: 1;
  transform: translateY(20px);
  opacity: 0;
  animation: slideUp 0.6s ease-out forwards;
}

@keyframes slideUp {
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

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

.auth-header h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  background: linear-gradient(to right, #fff, var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.auth-header p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text-main);
  transition: color 0.3s;
}

.form-control {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--input-bg);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  color: var(--text-main);
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.3s ease;
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
}

.form-control::placeholder {
  color: #64748b;
}

.btn-submit {
  width: 100%;
  padding: 1rem;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 1rem;
}

.btn-submit:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px -10px var(--primary);
}

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

.auth-footer {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.auth-footer a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
}

.auth-footer a:hover {
  color: var(--text-main);
  text-decoration: underline;
}

/* Switch styling for interactions */
.msg-alert {
  padding: 1rem;
  border-radius: 12px;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  display: none;
  animation: fadeIn 0.3s ease;
}

.msg-alert.error {
  display: block;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--error);
}

.msg-alert.success {
  display: block;
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: var(--success);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Loader */
.spinner {
  display: none;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
}

.loading .spinner {
  display: block;
}
.loading .btn-text {
  display: none;
}

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

@media (max-width: 480px) {
  .auth-container {
    padding: 2rem;
    border-radius: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border: none;
  }
}