/* ===== MODERN LOGIN PAGE STYLES ===== */
/* Inspirado em ReactBits com esquema azul/roxo */

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
  /* Primary Colors - Blue/Purple Scheme */
  --primary-blue: #2563eb;
  --primary-purple: #7c3aed;
  --primary-gradient: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
  --primary-gradient-hover: linear-gradient(135deg, #1d4ed8 0%, #6d28d9 100%);
  
  /* Secondary Colors */
  --secondary-blue: #3b82f6;
  --secondary-purple: #8b5cf6;
  --accent-cyan: #06b6d4;
  --accent-pink: #ec4899;
  
  /* Neutral Colors */
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* Dark Theme Colors */
  --dark-bg: #0a0a0f;
  --dark-card: #1a1a2e;
  --dark-surface: #16213e;
  --dark-border: #2a2a4a;
  --dark-text: #e2e8f0;
  --dark-text-secondary: #94a3b8;
  
  /* Status Colors */
  --success: #10b981;
  --success-bg: #d1fae5;
  --error: #ef4444;
  --error-bg: #fee2e2;
  --warning: #f59e0b;
  --warning-bg: #fef3c7;
  --info: #3b82f6;
  --info-bg: #dbeafe;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.3);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  
  /* Typography */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
}

/* ===== DARK THEME ===== */
[data-theme="dark"] {
  --bg-primary: var(--dark-bg);
  --bg-secondary: var(--dark-card);
  --bg-surface: var(--dark-surface);
  --border-color: var(--dark-border);
  --text-primary: var(--dark-text);
  --text-secondary: var(--dark-text-secondary);
}

/* ===== LIGHT THEME ===== */
[data-theme="light"] {
  --bg-primary: var(--gray-50);
  --bg-secondary: var(--white);
  --bg-surface: var(--white);
  --border-color: var(--gray-200);
  --text-primary: var(--gray-900);
  --text-secondary: var(--gray-600);
}

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

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segura UI', Roboto, sans-serif;
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary, var(--gray-900));
  background: var(--bg-primary, var(--gray-50));
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ===== BACKGROUND ELEMENTS ===== */
.background-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
}

.gradient-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, 
    rgba(37, 99, 235, 0.1) 0%, 
    rgba(124, 58, 237, 0.1) 25%,
    rgba(6, 182, 212, 0.05) 50%,
    rgba(236, 72, 153, 0.1) 75%,
    rgba(37, 99, 235, 0.1) 100%
  );
  animation: gradientShift 15s ease-in-out infinite;
}

@keyframes gradientShift {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

.particles-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.floating-shapes {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
}

.shape {
  position: absolute;
  border-radius: 50%;
  background: var(--primary-gradient);
  opacity: 0.1;
  animation: float 20s ease-in-out infinite;
}

.shape-1 {
  width: 300px;
  height: 300px;
  top: 10%;
  left: -10%;
  animation-delay: 0s;
}

.shape-2 {
  width: 200px;
  height: 200px;
  top: 60%;
  right: -5%;
  animation-delay: -7s;
}

.shape-3 {
  width: 150px;
  height: 150px;
  bottom: 20%;
  left: 20%;
  animation-delay: -14s;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  33% {
    transform: translateY(-30px) rotate(120deg);
  }
  66% {
    transform: translateY(20px) rotate(240deg);
  }
}

/* ===== MAIN CONTAINER ===== */
.login-container {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--space-lg);
  position: relative;
  z-index: 1;
}

/* ===== THEME TOGGLE ===== */
.theme-toggle {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-lg);
  width: 48px;
  height: 48px;
  border: none;
  border-radius: var(--radius-xl);
  background: var(--bg-secondary, var(--white));
  color: var(--text-primary, var(--gray-900));
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  transition: all var(--transition-normal);
  z-index: 1000;
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-color, var(--gray-200));
}

.theme-toggle:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-xl);
  background: var(--primary-gradient);
  color: var(--white);
}

.theme-toggle:focus {
  outline: none;
  box-shadow: var(--shadow-xl), 0 0 0 3px rgba(37, 99, 235, 0.3);
}

.theme-toggle:active {
  transform: translateY(0) scale(0.98);
}

/* ===== LOGIN CARD ===== */
.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-secondary, var(--white));
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  border: 1px solid var(--border-color, var(--gray-200));
  padding: var(--space-2xl);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  transition: all var(--transition-normal);
}

.login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
  border-radius: var(--radius-2xl) var(--radius-2xl) 0 0;
}

.login-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2xl), var(--shadow-glow);
}

/* ===== HEADER ===== */
.login-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.logo-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.logo-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-gradient);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: var(--font-size-xl);
  box-shadow: var(--shadow-lg);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    box-shadow: var(--shadow-lg), 0 0 0 0 rgba(37, 99, 235, 0.4);
  }
  50% {
    box-shadow: var(--shadow-lg), 0 0 0 10px rgba(37, 99, 235, 0);
  }
}

.logo-text {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary, var(--gray-900));
  margin: 0;
}

.logo-text .highlight {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-subtitle {
  font-size: var(--font-size-base);
  color: var(--text-secondary, var(--gray-600));
  margin: 0;
  font-weight: 400;
}

/* ===== FORM STYLES ===== */
.login-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-primary, var(--gray-900));
  margin-bottom: var(--space-xs);
}

.form-label i {
  color: var(--primary-blue);
  font-size: var(--font-size-sm);
}

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

.form-input {
  width: 100%;
  height: 48px;
  padding: 0 var(--space-md) 0 48px;
  border: 2px solid var(--border-color, var(--gray-200));
  border-radius: var(--radius-lg);
  background: var(--bg-surface, var(--white));
  color: var(--text-primary, var(--gray-900));
  font-size: var(--font-size-base);
  font-family: inherit;
  transition: all var(--transition-normal);
  outline: none;
}

.form-input::placeholder {
  color: var(--text-secondary, var(--gray-400));
  opacity: 1;
}

.form-input:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
  transform: translateY(-1px);
}

.form-input:valid {
  border-color: var(--success);
}

.form-input:invalid:not(:placeholder-shown) {
  border-color: var(--error);
}

.input-icon {
  position: absolute;
  left: var(--space-md);
  color: var(--text-secondary, var(--gray-400));
  font-size: var(--font-size-base);
  pointer-events: none;
  transition: color var(--transition-normal);
}

.form-input:focus + .input-icon {
  color: var(--primary-blue);
}

.password-toggle {
  position: absolute;
  right: var(--space-md);
  background: none;
  border: none;
  color: var(--text-secondary, var(--gray-400));
  cursor: pointer;
  padding: var(--space-xs);
  border-radius: var(--radius-sm);
  transition: color var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
}

.password-toggle:hover {
  color: var(--primary-blue);
  background: rgba(37, 99, 235, 0.1);
}

.password-toggle:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.3);
}

.validation-icon {
  position: absolute;
  right: 48px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.form-input:valid + .input-icon + .password-toggle + .validation-icon,
.form-input:valid + .input-icon + .validation-icon {
  opacity: 1;
  background: var(--success);
  color: var(--white);
}

.form-input:valid + .input-icon + .password-toggle + .validation-icon::before,
.form-input:valid + .input-icon + .validation-icon::before {
  content: '✓';
}

.form-input:invalid:not(:placeholder-shown) + .input-icon + .password-toggle + .validation-icon,
.form-input:invalid:not(:placeholder-shown) + .input-icon + .validation-icon {
  opacity: 1;
  background: var(--error);
  color: var(--white);
}

.form-input:invalid:not(:placeholder-shown) + .input-icon + .password-toggle + .validation-icon::before,
.form-input:invalid:not(:placeholder-shown) + .input-icon + .validation-icon::before {
  content: '✕';
}

.form-help {
  font-size: var(--font-size-xs);
  color: var(--text-secondary, var(--gray-500));
  margin: 0;
  opacity: 0.8;
}

.form-error {
  font-size: var(--font-size-xs);
  color: var(--error);
  margin: 0;
  min-height: 1.2em;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.form-error:not(:empty)::before {
  content: '⚠';
  font-size: var(--font-size-sm);
}

/* ===== FORM OPTIONS ===== */
.form-options {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin: var(--space-sm) 0;
}

.checkbox-container {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  user-select: none;
  position: relative;
}

.checkbox-container input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
  height: 0;
  width: 0;
}

.checkmark {
  height: 18px;
  width: 18px;
  background: var(--bg-surface, var(--white));
  border: 2px solid var(--border-color, var(--gray-300));
  border-radius: var(--radius-sm);
  position: relative;
  transition: all var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
}

.checkbox-container:hover .checkmark {
  border-color: var(--primary-blue);
  background: rgba(37, 99, 235, 0.05);
}

.checkbox-container input:checked ~ .checkmark {
  background: var(--primary-gradient);
  border-color: var(--primary-blue);
}

.checkbox-container input:checked ~ .checkmark::after {
  content: '✓';
  color: var(--white);
  font-size: var(--font-size-xs);
  font-weight: bold;
}

.checkbox-container input:focus ~ .checkmark {
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.checkbox-text {
  font-size: var(--font-size-sm);
  color: var(--text-secondary, var(--gray-600));
}

.forgot-password {
  font-size: var(--font-size-sm);
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-normal);
}

.forgot-password:hover {
  color: var(--primary-purple);
  text-decoration: underline;
}

.forgot-password:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.3);
  border-radius: var(--radius-sm);
}

/* ===== LOGIN BUTTON ===== */
.login-button {
  width: 100%;
  height: 52px;
  background: var(--primary-gradient);
  border: none;
  border-radius: var(--radius-lg);
  color: var(--white);
  font-size: var(--font-size-base);
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-lg);
  margin-top: var(--space-md);
}

.login-button::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;
}

.login-button:hover {
  background: var(--primary-gradient-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.login-button:hover::before {
  left: 100%;
}

.login-button:focus {
  outline: none;
  box-shadow: var(--shadow-xl), 0 0 0 3px rgba(37, 99, 235, 0.3);
}

.login-button:active {
  transform: translateY(0);
}

.login-button:disabled {
  background: var(--gray-400);
  cursor: not-allowed;
  transform: none;
  box-shadow: var(--shadow-sm);
}

.login-button:disabled:hover {
  background: var(--gray-400);
  transform: none;
  box-shadow: var(--shadow-sm);
}

.button-text {
  transition: opacity var(--transition-normal);
}

.button-loader {
  position: absolute;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.login-button.loading .button-text {
  opacity: 0;
}

.login-button.loading .button-loader {
  opacity: 1;
}

.login-button.loading .button-icon {
  opacity: 0;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top: 2px solid var(--white);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.button-icon {
  transition: all var(--transition-normal);
}

.login-button:hover .button-icon {
  transform: translateX(4px);
}

/* ===== STATUS MESSAGES ===== */
.status-container {
  margin-top: var(--space-lg);
  min-height: 40px;
  display: flex;
  align-items: center;
}

.status-message {
  width: 100%;
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-normal);
}

.status-message.show {
  opacity: 1;
  transform: translateY(0);
}

.status-message.success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success);
}

.status-message.error {
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid var(--error);
}

.status-message.warning {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid var(--warning);
}

.status-message.info {
  background: var(--info-bg);
  color: var(--info);
  border: 1px solid var(--info);
}

.status-message::before {
  font-size: var(--font-size-base);
}

.status-message.success::before {
  content: '✓';
}

.status-message.error::before {
  content: '✕';
}

.status-message.warning::before {
  content: '⚠';
}

.status-message.info::before {
  content: 'ℹ';
}

/* ===== FOOTER ===== */
.login-footer {
  margin-top: var(--space-2xl);
  text-align: center;
  border-top: 1px solid var(--border-color, var(--gray-200));
  padding-top: var(--space-lg);
}

.footer-text {
  font-size: var(--font-size-sm);
  color: var(--text-secondary, var(--gray-600));
  margin: 0 0 var(--space-md) 0;
}

.register-link {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-normal);
}

.register-link:hover {
  color: var(--primary-purple);
  text-decoration: underline;
}

.register-link:focus {
  outline: none;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.3);
  border-radius: var(--radius-sm);
}

.security-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-size: var(--font-size-xs);
  color: var(--text-secondary, var(--gray-500));
}

.security-info i {
  color: var(--success);
}

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

/* Tablet */
@media (max-width: 768px) {
  .login-container {
    padding: var(--space-md);
  }
  
  .login-card {
    padding: var(--space-xl);
    max-width: 100%;
  }
  
  .theme-toggle {
    top: var(--space-md);
    right: var(--space-md);
    width: 44px;
    height: 44px;
  }
  
  .logo-text {
    font-size: var(--font-size-2xl);
  }
  
  .form-options {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
}

/* Mobile */
@media (max-width: 480px) {
  .login-container {
    padding: var(--space-sm);
  }
  
  .login-card {
    padding: var(--space-lg);
    border-radius: var(--radius-xl);
  }
  
  .theme-toggle {
    top: var(--space-sm);
    right: var(--space-sm);
    width: 40px;
    height: 40px;
  }
  
  .logo-container {
    flex-direction: column;
    gap: var(--space-sm);
  }
  
  .logo-icon {
    width: 40px;
    height: 40px;
  }
  
  .logo-text {
    font-size: var(--font-size-xl);
  }
  
  .form-input {
    height: 44px;
    padding: 0 var(--space-sm) 0 44px;
  }
  
  .login-button {
    height: 48px;
  }
  
  .floating-shapes {
    display: none;
  }
}

/* Small Mobile */
@media (max-width: 360px) {
  .login-card {
    padding: var(--space-md);
  }
  
  .login-header {
    margin-bottom: var(--space-lg);
  }
  
  .login-footer {
    margin-top: var(--space-lg);
  }
}

/* ===== ACCESSIBILITY ===== */

/* High contrast mode */
@media (prefers-contrast: high) {
  .form-input {
    border-width: 3px;
  }
  
  .login-button {
    border: 2px solid var(--white);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .floating-shapes {
    display: none;
  }
}

/* Focus visible */
@supports selector(:focus-visible) {
  .form-input:focus {
    outline: none;
  }
  
  .form-input:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .background-container,
  .theme-toggle,
  .floating-shapes {
    display: none;
  }
  
  .login-card {
    box-shadow: none;
    border: 2px solid var(--gray-300);
  }
}