/* ============================================
   DHGESTOR - MODERN LOGIN PAGE
   Premium Design System
   Color Palette: Teal (#00A5A5) inspired
   ============================================ */

/* CSS Custom Properties (Design Tokens) */
:root {
  /* Brand Colors - Teal Palette */
  --color-primary: #00A5A5;
  --color-primary-dark: #008B8B;
  --color-primary-light: #00C5C5;
  --color-primary-alpha-10: rgba(0, 165, 165, 0.1);
  --color-primary-alpha-20: rgba(0, 165, 165, 0.2);
  --color-primary-alpha-30: rgba(0, 165, 165, 0.3);

  /* Gradient Colors */
  --gradient-primary: linear-gradient(135deg, #00A5A5 0%, #00C5C5 50%, #0DDAD0 100%);
  --gradient-primary-hover: linear-gradient(135deg, #008B8B 0%, #00A5A5 50%, #00C5C5 100%);
  --gradient-background: linear-gradient(135deg, #00A5A5 0%, #14B8A6 25%, #0D9488 50%, #0F766E 75%, #115E59 100%);

  /* Neutral Colors */
  --color-white: #FFFFFF;
  --color-black: #000000;
  --color-gray-50: #F9FAFB;
  --color-gray-100: #F3F4F6;
  --color-gray-200: #E5E7EB;
  --color-gray-300: #D1D5DB;
  --color-gray-400: #9CA3AF;
  --color-gray-500: #6B7280;
  --color-gray-600: #4B5563;
  --color-gray-700: #374151;
  --color-gray-800: #1F2937;
  --color-gray-900: #111827;

  /* Semantic Colors */
  --color-error: #EF4444;
  --color-error-light: #FEE2E2;
  --color-error-dark: #991B1B;
  --color-success: #10B981;
  --color-success-light: #D1FAE5;
  --color-warning: #F59E0B;

  /* Spacing Scale */
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Border Radius */
  --radius-sm: 0.375rem;   /* 6px */
  --radius-base: 0.5rem;   /* 8px */
  --radius-md: 0.75rem;    /* 12px */
  --radius-lg: 1rem;       /* 16px */
  --radius-xl: 1.5rem;     /* 24px */
  --radius-2xl: 2rem;      /* 32px */
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-primary: 0 10px 25px -5px rgba(0, 165, 165, 0.3);
  --shadow-primary-lg: 0 20px 40px -10px rgba(0, 165, 165, 0.4);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ============================================
   GLOBAL RESET & BASE STYLES
   ============================================ */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-gray-900);
  background: var(--gradient-background);
  min-height: 100vh;
  overflow-x: hidden;
  padding: 0 !important;
}

/* ============================================
   LOGIN WRAPPER & BACKGROUND
   ============================================ */

.login-wrapper {
  min-height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
}

/* Animated Background Shapes */
.login-background-shapes {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.15;
  filter: blur(60px);
  animation: float 20s ease-in-out infinite;
}

.shape-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.5) 0%, transparent 70%);
  top: -15%;
  left: -10%;
  animation-delay: 0s;
}

.shape-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 197, 197, 0.6) 0%, transparent 70%);
  bottom: -10%;
  right: -10%;
  animation-delay: -7s;
}

.shape-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(13, 218, 208, 0.4) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -14s;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
    opacity: 0.15;
  }
  33% {
    transform: translate(30px, -30px) scale(1.1);
    opacity: 0.2;
  }
  66% {
    transform: translate(-30px, 30px) scale(0.9);
    opacity: 0.1;
  }
}

/* ============================================
   LOGIN CONTAINER & CARD
   ============================================ */

.login-container {
  width: 100%;
  max-width: 480px;
  position: relative;
  z-index: var(--z-base);
  animation: fadeInUp 0.8s var(--transition-spring) backwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.login-card {
  background: var(--color-white);
  border-radius: var(--radius-2xl);
  padding: var(--space-12) var(--space-10);
  box-shadow: var(--shadow-2xl);
  position: relative;
  overflow: hidden;
}

/* Decorative Top Border */
.login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0% {
    background-position: -200% center;
  }
  100% {
    background-position: 200% center;
  }
}

/* Glass Morphism Effect on Hover */
.login-card::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: var(--radius-2xl);
  padding: 1px;
  background: linear-gradient(135deg,
    rgba(0, 165, 165, 0.2) 0%,
    transparent 50%,
    rgba(0, 197, 197, 0.2) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
  z-index: -1;
}

.login-card:hover::after {
  opacity: 1;
}

/* ============================================
   CARD HEADER
   ============================================ */

.login-card-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.logo-container {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
  position: relative;
}

.logo-login {
  height: 80px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 4px 12px rgba(0, 165, 165, 0.2));
  animation: logoFloat 4s ease-in-out infinite;
  transition: transform var(--transition-base);
}

.logo-container:hover .logo-login {
  transform: scale(1.05);
}

@keyframes logoFloat {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-8px);
  }
}

.login-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
  margin-bottom: var(--space-2);
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.login-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-gray-500);
  font-weight: var(--font-weight-normal);
  line-height: 1.5;
}

/* ============================================
   ALERT MESSAGES
   ============================================ */

.alert-container {
  margin-bottom: var(--space-6);
}

.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  animation: slideInAlert 0.4s var(--transition-spring) backwards;
}

@keyframes slideInAlert {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.alert-error {
  background: linear-gradient(135deg, var(--color-error-light) 0%, #FEF2F2 100%);
  border: 1px solid rgba(239, 68, 68, 0.2);
  border-left: 4px solid var(--color-error);
  color: var(--color-error-dark);
}

.alert-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-error);
}

.alert-content {
  flex: 1;
}

.alert-text {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1.5;
}

/* ============================================
   FORM STYLES
   ============================================ */

.login-form {
  margin-top: var(--space-8);
}

.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-700);
  margin-bottom: var(--space-2);
  padding-left: var(--space-1);
  transition: color var(--transition-fast);
}

.label-icon {
  width: 16px;
  height: 16px;
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

.form-group:focus-within .form-label {
  color: var(--color-primary);
}

.form-group:focus-within .label-icon {
  color: var(--color-primary);
}

/* Input Wrapper with Animated Border */
.input-wrapper {
  position: relative;
}

.form-input {
  width: 100%;
  height: 54px;
  padding: 0 var(--space-4);
  font-size: var(--font-size-base);
  font-family: inherit;
  font-weight: var(--font-weight-normal);
  color: var(--color-gray-900);
  background: var(--color-gray-50);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  outline: none;
  transition: all var(--transition-base);
  -webkit-appearance: none;
  appearance: none;
}

.form-input::placeholder {
  color: var(--color-gray-400);
  font-weight: var(--font-weight-normal);
}

.form-input:hover {
  border-color: var(--color-gray-300);
  background: var(--color-white);
}

.form-input:focus {
  background: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-alpha-10);
  transform: translateY(-2px);
}

/* Animated Border Effect */
.input-border {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
  pointer-events: none;
}

.form-input:focus + .input-border {
  transform: scaleX(1);
}

/* Input States */
.form-input:disabled {
  background: var(--color-gray-100);
  color: var(--color-gray-400);
  cursor: not-allowed;
  opacity: 0.6;
}

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

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

/* ============================================
   SUBMIT BUTTON
   ============================================ */

.btn-submit {
  width: 100%;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0 var(--space-6);
  margin-top: var(--space-8);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  font-family: inherit;
  color: var(--color-white);
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  outline: none;
  box-shadow: var(--shadow-primary);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  -webkit-appearance: none;
  appearance: none;
}

.btn-text {
  position: relative;
  z-index: 2;
  transition: transform var(--transition-base);
}

.btn-icon {
  width: 20px;
  height: 20px;
  position: relative;
  z-index: 2;
  transition: transform var(--transition-base);
  opacity: 0.9;
}

/* Shimmer Effect */
.btn-shimmer {
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: left 0.6s ease;
  z-index: 1;
}

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

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

.btn-submit:hover .btn-icon {
  transform: translateX(4px);
}

.btn-submit:active {
  transform: translateY(0);
  box-shadow: var(--shadow-primary);
}

.btn-submit:focus-visible {
  outline: 3px solid var(--color-primary-alpha-30);
  outline-offset: 2px;
}

.btn-submit:disabled {
  background: var(--color-gray-300);
  color: var(--color-gray-500);
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* Loading State */
.btn-submit.is-loading {
  pointer-events: none;
}

.btn-submit.is-loading .btn-text {
  opacity: 0;
}

.btn-submit.is-loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-white);
  border-radius: 50%;
  border-top-color: transparent;
  animation: spin 0.6s linear infinite;
}

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

/* ============================================
   FOOTER
   ============================================ */

.login-footer {
  margin-top: var(--space-10);
  text-align: center;
}

.footer-divider {
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-gray-200),
    transparent
  );
  margin-bottom: var(--space-6);
}

.footer-text {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-2);
}

.footer-icon {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
  opacity: 0.8;
}

.footer-copyright {
  font-size: var(--font-size-xs);
  color: var(--color-gray-400);
  font-weight: var(--font-weight-normal);
}

/* ============================================
   RESPONSIVE DESIGN - MOBILE FIRST
   ============================================ */

/* Extra Small Devices (Portrait Phones, < 576px) */
@media (max-width: 575.98px) {
  .login-wrapper {
    padding: var(--space-4);
  }

  .login-card {
    padding: var(--space-8) var(--space-6);
    border-radius: var(--radius-xl);
  }

  .logo-login {
    height: 60px;
  }

  .login-title {
    font-size: var(--font-size-2xl);
  }

  .login-subtitle {
    font-size: var(--font-size-sm);
  }

  .form-input,
  .btn-submit {
    height: 50px;
    font-size: 16px; /* Prevents iOS zoom on focus */
  }

  .form-group {
    margin-bottom: var(--space-5);
  }

  .btn-submit {
    margin-top: var(--space-6);
  }

  .shape-1,
  .shape-2,
  .shape-3 {
    display: none; /* Hide decorative shapes on mobile for performance */
  }
}

/* Small Devices (Landscape Phones, 576px - 767.98px) */
@media (min-width: 576px) and (max-width: 767.98px) {
  .login-container {
    max-width: 440px;
  }

  .login-card {
    padding: var(--space-10) var(--space-8);
  }

  .logo-login {
    height: 70px;
  }
}

/* Medium Devices (Tablets, 768px - 991.98px) */
@media (min-width: 768px) and (max-width: 991.98px) {
  .login-container {
    max-width: 460px;
  }
}

/* Large Devices (Desktops, 992px - 1199.98px) */
@media (min-width: 992px) {
  .login-card:hover {
    transform: translateY(-4px);
    box-shadow:
      0 30px 60px -15px rgba(0, 0, 0, 0.3),
      0 0 0 1px rgba(0, 165, 165, 0.1);
    transition: all var(--transition-base);
  }
}

/* Extra Large Devices (Large Desktops, >= 1200px) */
@media (min-width: 1200px) {
  .login-container {
    max-width: 500px;
  }

  .login-title {
    font-size: var(--font-size-4xl);
  }

  .login-subtitle {
    font-size: var(--font-size-lg);
  }
}

/* Landscape Orientation (Mobile/Tablet) */
@media (max-height: 700px) and (orientation: landscape) {
  .login-wrapper {
    align-items: flex-start;
    padding: var(--space-6) var(--space-4);
  }

  .login-card {
    padding: var(--space-6) var(--space-8);
  }

  .logo-login {
    height: 50px;
    margin-bottom: var(--space-4);
  }

  .login-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-1);
  }

  .login-subtitle {
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-4);
  }

  .login-card-header {
    margin-bottom: var(--space-4);
  }

  .form-group {
    margin-bottom: var(--space-4);
  }

  .btn-submit {
    margin-top: var(--space-4);
    height: 48px;
  }

  .login-footer {
    margin-top: var(--space-6);
  }
}

/* ============================================
   ACCESSIBILITY & PREFERENCES
   ============================================ */

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
  .login-card {
    border: 2px solid var(--color-gray-900);
  }

  .form-input {
    border-width: 2px;
  }

  .btn-submit {
    border: 2px solid var(--color-primary-dark);
  }

  .alert-error {
    border-width: 2px;
  }
}

/* Dark Mode Support (Future Implementation) */
@media (prefers-color-scheme: dark) {
  /* Dark mode variables can be overridden here if needed */
  /* Currently showing light theme always */
}

/* Print Styles */
@media print {
  .login-wrapper {
    background: var(--color-white);
  }

  .login-background-shapes {
    display: none;
  }

  .login-card {
    box-shadow: none;
    border: 1px solid var(--color-gray-300);
  }

  .btn-submit,
  .login-footer {
    display: none;
  }
}

/* ============================================
   UTILITIES & HELPERS
   ============================================ */

/* Focus Visible (Keyboard Navigation) */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Hide elements but keep them accessible to screen readers */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ============================================
   DJANGO TEMPLATE COMPATIBILITY
   ============================================ */

/* Hide navbar and footer on login page */
.navbar,
.mobile-menu-overlay,
.rodape-sistema {
  display: none !important;
}

/* Ensure no top padding from base template */
body.login-page {
  padding-top: 0 !important;
}

/* ============================================
   BROWSER-SPECIFIC FIXES
   ============================================ */

/* Safari Input Shadow Fix */
.form-input::-webkit-input-placeholder {
  color: var(--color-gray-400);
}

/* Firefox Input Number Spinner */
.form-input[type="number"]::-webkit-outer-spin-button,
.form-input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.form-input[type="number"] {
  -moz-appearance: textfield;
}

/* Edge Clear Button */
.form-input::-ms-clear {
  display: none;
}

/* Password Reveal Button Styling (Edge/Safari) */
.form-input::-ms-reveal,
.form-input::-webkit-credentials-auto-fill-button {
  display: none;
}

/* Autofill Styling */
.form-input:-webkit-autofill,
.form-input:-webkit-autofill:hover,
.form-input:-webkit-autofill:focus {
  -webkit-text-fill-color: var(--color-gray-900);
  -webkit-box-shadow: 0 0 0px 1000px var(--color-gray-50) inset;
  transition: background-color 5000s ease-in-out 0s;
  border-color: var(--color-gray-200);
}

.form-input:-webkit-autofill:focus {
  -webkit-box-shadow:
    0 0 0px 1000px var(--color-white) inset,
    0 0 0 4px var(--color-primary-alpha-10);
  border-color: var(--color-primary);
}