/* ================= ROOT VARIABLES ================= */
:root {
  /* Color Palette - Deep Blue Theme with Electric Accents */
  --primary: #0ea5e9;
  --primary-dark: #0284c7;
  --primary-light: #38bdf8;
  --accent: #f59e0b;
  --accent-hover: #f97316;
  
  --bg-dark: #0f172a;
  --bg-darker: #020617;
  --bg-card: rgba(15, 23, 42, 0.85);
  
  --text-main: #f8fafc;
  --text-muted: #cbd5e1;
  --text-dim: #64748b;
  
  --glass-bg: rgba(30, 41, 59, 0.75);
  --glass-border: rgba(148, 163, 184, 0.15);
  
  --green: #10b981;
  --red: #ef4444;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.4);
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ================= RESET & BASE ================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ================= ANIMATED BACKGROUND ================= */
.animated-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  overflow: hidden;
  pointer-events: none;
}

.weather-particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: radial-gradient(circle, var(--primary-light), transparent);
  border-radius: 50%;
  animation: float 15s infinite ease-in-out;
  opacity: 0.6;
}

.weather-particle:nth-child(1) {
  top: 20%;
  left: 10%;
  width: 4px;
  height: 4px;
  animation-delay: 0s;
  animation-duration: 12s;
}

.weather-particle:nth-child(2) {
  top: 60%;
  left: 80%;
  width: 2px;
  height: 2px;
  animation-delay: 2s;
  animation-duration: 18s;
}

.weather-particle:nth-child(3) {
  top: 40%;
  left: 30%;
  width: 3px;
  height: 3px;
  animation-delay: 4s;
  animation-duration: 15s;
}

.weather-particle:nth-child(4) {
  top: 80%;
  left: 60%;
  width: 4px;
  height: 4px;
  animation-delay: 1s;
  animation-duration: 20s;
}

.weather-particle:nth-child(5) {
  top: 10%;
  left: 90%;
  width: 2px;
  height: 2px;
  animation-delay: 3s;
  animation-duration: 14s;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
    opacity: 0.3;
  }
  25% {
    transform: translate(50px, -30px) scale(1.2);
    opacity: 0.8;
  }
  50% {
    transform: translate(-30px, 50px) scale(0.8);
    opacity: 0.4;
  }
  75% {
    transform: translate(40px, 20px) scale(1.1);
    opacity: 0.6;
  }
}

/* ================= AUTH CONTAINER ================= */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  position: relative;
  z-index: 10;
}

/* ================= AUTH CARD ================= */
.auth-card {
  width: 100%;
  max-width: 480px;
  background: var(--glass-bg);
  backdrop-filter: blur(24px) saturate(180%);
  border-radius: 24px;
  padding: 48px;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--glass-border);
  animation: floatIn 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-slow);
}

.auth-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
  opacity: 0.8;
}

.auth-card::after {
  content: '';
  position: absolute;
  bottom: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.15), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.auth-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
  border-color: rgba(14, 165, 233, 0.3);
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ================= AUTH HEADER ================= */
.auth-header {
  text-align: center;
  margin-bottom: 40px;
  animation: fadeIn 1s ease;
}

.auth-header .logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: 20px;
  margin-bottom: 24px;
  box-shadow: 0 8px 32px rgba(14, 165, 233, 0.4);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.auth-header .logo::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.3) 50%, transparent 70%);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.auth-header .logo:hover::before {
  transform: translateX(100%);
}

.auth-header .logo:hover {
  transform: scale(1.08) rotate(-5deg);
  box-shadow: 0 12px 40px rgba(14, 165, 233, 0.6);
}

.auth-header .logo svg {
  width: 40px;
  height: 40px;
  color: #ffffff;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
  position: relative;
  z-index: 1;
}

.auth-header h1 {
  font-family: 'Syne', sans-serif;
  font-size: clamp(32px, 5vw, 42px);
  font-weight: 800;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--text-main), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -1px;
  transition: transform var(--transition-fast);
}

.auth-header p {
  font-size: clamp(14px, 3vw, 16px);
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.5px;
}

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

/* ================= WELCOME MODAL ================= */
.welcome-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeInBg 0.3s ease;
}

.welcome-modal.active {
  display: flex;
}

.welcome-content {
  background: var(--glass-bg);
  backdrop-filter: blur(24px);
  border-radius: 24px;
  padding: 48px 40px;
  max-width: 480px;
  width: 90%;
  text-align: center;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  border: 1px solid var(--glass-border);
  animation: scaleIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.welcome-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.welcome-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 32px rgba(245, 158, 11, 0.4);
  animation: bounceIn 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.welcome-icon svg {
  width: 40px;
  height: 40px;
  color: white;
}

.welcome-content h2 {
  font-family: 'Syne', sans-serif;
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-main);
}

.welcome-content p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 32px;
}

.btn-welcome {
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  color: white;
  border: none;
  padding: 14px 32px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-welcome:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(245, 158, 11, 0.5);
}

@keyframes fadeInBg {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes bounceIn {
  0% {
    transform: scale(0);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}

/* ================= SUCCESS/ERROR MESSAGE ================= */
.success-message {
  display: none;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  border-radius: 12px;
  margin-bottom: 24px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
  animation: slideInAlert 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  backdrop-filter: blur(10px);
}

.success-message.active {
  display: flex;
}

.success-message svg {
  width: 22px;
  height: 22px;
  color: var(--green);
  flex-shrink: 0;
  filter: drop-shadow(0 2px 4px rgba(16, 185, 129, 0.3));
}

.success-message p {
  flex: 1;
  color: #86efac;
  font-size: 14px;
  font-weight: 600;
  margin: 0;
}

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

/* ================= FORM CONTAINER ================= */
.form-container {
  position: relative;
}

.form-container form {
  display: none;
  animation: fadeInForm 0.4s ease;
}

.form-container form.active {
  display: block;
}

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

/* ================= INPUT GROUPS ================= */
.input-group {
  margin-bottom: 24px;
}

.input-group label {
  display: block;
  margin-bottom: 10px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-wrapper input {
  width: 100%;
  padding: 14px 48px 14px 16px;
  border-radius: 12px;
  border: 1.5px solid var(--glass-border);
  background: rgba(15, 23, 42, 0.5);
  color: var(--text-main);
  font-size: 15px;
  font-weight: 500;
  outline: none;
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
}

.input-wrapper input::placeholder {
  color: var(--text-dim);
  font-weight: 400;
}

.input-wrapper input:focus {
  background: rgba(15, 23, 42, 0.7);
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.1);
  transform: translateY(-1px);
}

.input-wrapper input:hover:not(:focus) {
  border-color: rgba(14, 165, 233, 0.3);
  background: rgba(15, 23, 42, 0.6);
}

.input-wrapper svg {
  position: absolute;
  right: 16px;
  width: 20px;
  height: 20px;
  color: var(--text-dim);
  pointer-events: none;
  transition: all var(--transition-fast);
}

.input-wrapper input:focus + svg {
  color: var(--primary);
  transform: scale(1.1);
}

/* ================= BUTTONS ================= */
.btn {
  width: 100%;
  padding: 16px 24px;
  border-radius: 12px;
  border: none;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-family: 'DM Sans', sans-serif;
}

.btn span {
  position: relative;
  z-index: 1;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #ffffff;
  box-shadow: 0 6px 24px rgba(14, 165, 233, 0.4);
  margin-top: 8px;
  margin-bottom: 24px;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(14, 165, 233, 0.6);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn.loading {
  pointer-events: none;
  opacity: 0.7;
}

.btn.loading::after {
  content: '';
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  z-index: 2;
}

@keyframes spin {
  to { transform: translateY(-50%) rotate(360deg); }
}

/* ================= FORM FOOTER ================= */
.form-footer {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(148, 163, 184, 0.1);
}

.form-footer p {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
}

.form-footer a {
  color: var(--primary-light);
  text-decoration: none;
  font-weight: 700;
  transition: all var(--transition-fast);
  position: relative;
}

.form-footer a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-light);
  transition: width var(--transition-normal);
}

.form-footer a:hover {
  color: var(--accent);
  transform: translateY(-1px);
}

.form-footer a:hover::after {
  width: 100%;
  background: var(--accent);
}

.form-footer .divider {
  color: var(--text-dim);
  font-weight: 400;
}

/* ================= RESPONSIVE DESIGN ================= */

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

  .auth-card {
    padding: 36px 28px;
    border-radius: 20px;
  }

  .auth-header .logo {
    width: 70px;
    height: 70px;
    margin-bottom: 20px;
  }

  .auth-header .logo svg {
    width: 36px;
    height: 36px;
  }

  .auth-header h1 {
    font-size: 32px;
  }

  .auth-header p {
    font-size: 15px;
  }

  .input-group {
    margin-bottom: 20px;
  }

  .input-wrapper input {
    padding: 13px 44px 13px 14px;
    font-size: 14px;
  }

  .btn {
    padding: 14px 20px;
    font-size: 14px;
  }

  .welcome-content {
    padding: 40px 32px;
  }

  .welcome-icon {
    width: 70px;
    height: 70px;
  }

  .welcome-content h2 {
    font-size: 24px;
  }

  .welcome-content p {
    font-size: 15px;
  }
}

/* Mobile Devices */
@media (max-width: 480px) {
  .auth-container {
    padding: 16px;
  }

  .auth-card {
    padding: 32px 24px;
    border-radius: 20px;
  }

  .auth-header .logo {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
    border-radius: 16px;
  }

  .auth-header .logo svg {
    width: 32px;
    height: 32px;
  }

  .auth-header h1 {
    font-size: 28px;
    margin-bottom: 6px;
  }

  .auth-header p {
    font-size: 14px;
  }

  .success-message {
    padding: 14px 16px;
    gap: 10px;
  }

  .success-message svg {
    width: 20px;
    height: 20px;
  }

  .success-message p {
    font-size: 13px;
  }

  .input-group {
    margin-bottom: 18px;
  }

  .input-group label {
    font-size: 11px;
    margin-bottom: 8px;
  }

  .input-wrapper input {
    padding: 12px 40px 12px 12px;
    font-size: 14px;
    border-radius: 10px;
  }

  .input-wrapper svg {
    right: 12px;
    width: 18px;
    height: 18px;
  }

  .btn {
    padding: 13px 18px;
    font-size: 13px;
    border-radius: 10px;
  }

  .btn-primary {
    margin-bottom: 20px;
  }

  .form-footer {
    padding-top: 16px;
  }

  .form-footer p {
    font-size: 13px;
    flex-direction: column;
    gap: 12px;
  }

  .form-footer .divider {
    display: none;
  }

  .welcome-content {
    padding: 36px 24px;
    width: 95%;
  }

  .welcome-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 20px;
  }

  .welcome-icon svg {
    width: 32px;
    height: 32px;
  }

  .welcome-content h2 {
    font-size: 22px;
    margin-bottom: 12px;
  }

  .welcome-content p {
    font-size: 14px;
    margin-bottom: 28px;
  }

  .btn-welcome {
    padding: 12px 28px;
    font-size: 14px;
  }
}

/* Small Mobile Devices */
@media (max-width: 360px) {
  .auth-container {
    padding: 12px;
  }

  .auth-card {
    padding: 28px 20px;
  }

  .auth-header .logo {
    width: 56px;
    height: 56px;
  }

  .auth-header .logo svg {
    width: 28px;
    height: 28px;
  }

  .auth-header h1 {
    font-size: 24px;
  }

  .input-wrapper input {
    padding: 11px 36px 11px 12px;
    font-size: 13px;
  }

  .welcome-content {
    padding: 28px 20px;
  }
}

/* Landscape Orientation */
@media (max-height: 700px) and (orientation: landscape) {
  .auth-container {
    padding: 16px;
    align-items: flex-start;
  }

  .auth-card {
    margin: 20px auto;
    padding: 24px;
  }

  .auth-header {
    margin-bottom: 20px;
  }

  .auth-header .logo {
    width: 60px;
    height: 60px;
    margin-bottom: 12px;
  }

  .input-group {
    margin-bottom: 14px;
  }

  .btn-primary {
    margin-bottom: 16px;
  }

  .form-footer {
    padding-top: 16px;
  }

  .welcome-content {
    padding: 32px 28px;
  }

  .welcome-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 16px;
  }
}

/* Tablet Landscape */
@media (min-width: 768px) and (max-width: 1024px) and (orientation: landscape) {
  .auth-card {
    max-width: 440px;
  }
}

/* Focus Visible for Accessibility */
*:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Print Styles */
@media print {
  .animated-bg,
  .weather-particle {
    display: none;
  }
  
  body {
    background: white;
  }
}
.btn-icon {
  font-size: 20px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.material-symbols-outlined {
  font-variation-settings:
    'FILL' 0,
    'wght' 400,
    'GRAD' 0,
    'opsz' 24;
}