/* =======================
   CSS Variables (Themes)
======================= */
:root {
  /* Light Theme */
  --primary-blue: #045CB4;
  --primary-blue-light: #1a7ad9;
  --dark-blue: #034a8f;
  --light-blue: #e3f2fd;
  --light-blue-2: #f0f8ff;
  --success-green: #198754;
  --success-green-light: #20c997;
  --danger-red: #dc3545;
  --danger-red-light: #e74c3c;
  --warning-orange: #ffc107;
  --warning-orange-light: #ffd54f;
  --light-gray: #f8f9fa;
  --light-gray-2: #f1f3f4;
  --text-muted: #6c757d;
  --text-dark: #343a40;
  --white: #ffffff;
  --card-bg: #ffffff;
  --body-bg: linear-gradient(135deg, #1a2980, #26d0ce);
  --card-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  --card-shadow-hover: 0 15px 35px rgba(0, 0, 0, 0.15);
  --border-radius: 16px;
  --border-radius-sm: 10px;
  --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Dark Theme Variables */
.dark-mode {
  --primary-blue: #4dabf7;
  --primary-blue-light: #74c0fc;
  --dark-blue: #1c7ed6;
  --light-blue: #1a2835;
  --light-blue-2: #15202b;
  --success-green: #40c057;
  --success-green-light: #51cf66;
  --danger-red: #ff6b6b;
  --danger-red-light: #ff8787;
  --warning-orange: #ff922b;
  --warning-orange-light: #ffa94d;
  --light-gray: #2d3748;
  --light-gray-2: #4a5568;
  --text-muted: #a0aec0;
  --text-dark: #e2e8f0;
  --white: #1a202c;
  --card-bg: #2d3748;
  --body-bg: linear-gradient(135deg, #0f172a, #1e293b);
  --card-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  --card-shadow-hover: 0 15px 35px rgba(0, 0, 0, 0.4);
}

/* =======================
   Base Styles
======================= */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Vazir', Tahoma, sans-serif;
  background: var(--body-bg);
  color: var(--text-dark);
  line-height: 1.6;
  min-height: 100vh;
  padding: 20px;
  position: relative;
  overflow-x: hidden;
  transition: background 0.5s ease, color 0.3s ease;
}

body::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.2) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(120, 219, 226, 0.2) 0%, transparent 50%);
  z-index: -1;
  opacity: 0.5;
}

.dark-mode body::before {
  opacity: 0.2;
}

/* =======================
   Theme Toggle Button
======================= */
.theme-toggle {
  position: fixed;
  top: 20px;
  left: 20px;
  width: 60px;
  height: 30px;
  background: var(--light-gray);
  border: 2px solid var(--primary-blue);
  border-radius: 30px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6px;
  z-index: 1000;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.theme-toggle:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.theme-toggle i {
  font-size: 14px;
  color: var(--text-dark);
  z-index: 2;
  transition: var(--transition);
}

.theme-toggle .fa-sun {
  color: #f59e0b;
}

.theme-toggle .fa-moon {
  color: #4b5563;
}

.toggle-ball {
  position: absolute;
  left: 4px;
  width: 22px;
  height: 22px;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  border-radius: 50%;
  transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  z-index: 1;
}

.dark-mode .toggle-ball {
  transform: translateX(30px);
}

/* =======================
   Containers
======================= */
.login-container, .user-container, .admin-container {
  background: var(--card-bg);
  backdrop-filter: blur(10px);
  padding: 2.5rem;
  border-radius: var(--border-radius);
  box-shadow: var(--card-shadow);
  width: 100%;
  max-width: 1200px;
  margin: 20px auto;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  animation: slideIn 0.8s ease-out forwards;
  opacity: 0;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.login-container {
  max-width: 500px;
}

.user-container {
  max-width: 600px;
}

.login-container:hover, .user-container:hover, .admin-container:hover {
  transform: translateY(-8px);
  box-shadow: var(--card-shadow-hover);
}

.login-container::before, .user-container::before, .admin-container::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(to left, var(--primary-blue), var(--primary-blue-light));
  box-shadow: 0 2px 10px rgba(4, 92, 180, 0.4);
}

/* =======================
   Header & Logo
======================= */
.login-header, .user-header, .admin-header {
  margin-bottom: 2rem;
  position: relative;
  text-align: center;
}

.login-logo, .user-logo, .admin-logo {
  max-height: 80px;
  width: auto;
  margin-bottom: 1rem;
  transition: transform 0.4s ease;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.login-logo:hover, .user-logo:hover, .admin-logo:hover {
  transform: scale(1.08);
}

.login-title, .user-title, .admin-title {
  color: var(--primary-blue);
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 0.5rem;
  animation: fadeIn 0.6s ease-out 0.3s forwards;
  opacity: 0;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.login-subtitle, .user-subtitle, .admin-subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

/* =======================
   Admin Dashboard Styles
======================= */
.admin-nav {
  display: flex;
  gap: 12px;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.nav-btn {
  background: var(--light-gray);
  border: 2px solid var(--primary-blue);
  color: var(--primary-blue);
  padding: 14px 22px;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 700;
  flex: 1;
  min-width: 160px;
  text-align: center;
  position: relative;
  overflow: hidden;
  z-index: 1;
  font-family: 'Vazir', Tahoma, sans-serif;
}

.nav-btn::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  transition: width 0.4s ease;
  z-index: -1;
}

.nav-btn:hover::before {
  width: 100%;
}

.nav-btn:hover {
  color: var(--white);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(4, 92, 180, 0.3);
}

.nav-btn.active {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  color: var(--white);
  box-shadow: 0 4px 12px rgba(4, 92, 180, 0.3);
}

.section {
  display: none;
  animation: fadeIn 0.5s ease-out;
}

.section.active {
  display: block;
}

.section-title {
  color: var(--text-dark);
  font-size: 1.4rem;
  margin-bottom: 1.5rem;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-blue);
  display: flex;
  align-items: center;
  gap: 10px;
}

/* =======================
   Form Elements
======================= */
.form-group {
  margin-bottom: 1.8rem;
  text-align: right;
  position: relative;
}

.form-label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.7rem;
  color: var(--text-dark);
  text-align: right;
  font-size: 1.05rem;
}

.input-with-icon {
  position: relative;
}

.form-control {
  width: 100%;
  padding: 16px 50px 16px 16px;
  border-radius: var(--border-radius-sm);
  border: 2px solid var(--light-gray-2);
  font-size: 1.05rem;
  font-family: 'Vazir', Tahoma, sans-serif;
  transition: var(--transition);
  background-color: var(--light-gray);
  color: var(--text-dark);
  direction: ltr;
  text-align: left;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

.form-control:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 0.25rem rgba(4, 92, 180, 0.25), inset 0 2px 4px rgba(0, 0, 0, 0.05);
  background-color: var(--card-bg);
  outline: none;
  transform: translateY(-2px);
}

.input-icon {
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 1.2rem;
  transition: var(--transition);
  cursor: pointer;
}

.form-control:focus + .input-icon {
  color: var(--primary-blue);
  transform: translateY(-50%) scale(1.1);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 1.5rem;
}

/* =======================
   Buttons
======================= */
.btn {
  border: none;
  padding: 16px;
  font-weight: 800;
  border-radius: var(--border-radius-sm);
  font-size: 1.1rem;
  color: white;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  z-index: 1;
  cursor: pointer;
  font-family: 'Vazir', Tahoma, sans-serif;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
}

.btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}

.btn:hover {
  transform: translateY(-3px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  box-shadow: 0 4px 12px rgba(4, 92, 180, 0.3);
}

.btn-primary::after {
  background: linear-gradient(45deg, var(--dark-blue), #00264d);
}

.btn-primary:hover {
  box-shadow: 0 8px 20px rgba(4, 92, 180, 0.4);
}

.btn-primary:hover::after {
  transform: translateX(0);
}

.btn-success {
  background: linear-gradient(135deg, var(--success-green), var(--success-green-light));
  box-shadow: 0 4px 12px rgba(25, 135, 84, 0.3);
}

.btn-success::after {
  background: linear-gradient(45deg, #157347, #0d5033);
}

.btn-success:hover {
  box-shadow: 0 8px 20px rgba(25, 135, 84, 0.4);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger-red), var(--danger-red-light));
  box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
}

.btn-danger::after {
  background: linear-gradient(45deg, #c82333, #a71e2a);
}

.btn-danger:hover {
  box-shadow: 0 8px 20px rgba(220, 53, 69, 0.4);
}

.btn-secondary {
  background: var(--warning-orange);
  box-shadow: 0 2px 8px rgba(255, 193, 7, 0.3);
  padding: 12px 18px;
  font-weight: 600;
}

.btn-secondary:hover {
  background: var(--warning-orange-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 193, 7, 0.4);
}

.btn-logout {
  background: linear-gradient(135deg, var(--danger-red), var(--danger-red-light));
  border: none;
  padding: 12px 24px;
  font-weight: 700;
  border-radius: var(--border-radius-sm);
  font-size: 1rem;
  color: white;
  transition: var(--transition);
  cursor: pointer;
  margin-top: 20px;
  width: auto;
  display: inline-flex;
  box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
}

.btn-logout:hover {
  background: linear-gradient(135deg, #c82333, #a71e2a);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(220, 53, 69, 0.4);
}

/* =======================
   User Info Styles
======================= */
.user-info-container, .certificate-info {
  background: linear-gradient(135deg, var(--light-gray), var(--light-blue-2));
  padding: 25px;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--primary-blue-light);
  margin-top: 20px;
  text-align: right;
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.05);
}

.info-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--text-muted);
  transition: var(--transition);
  align-items: center;
}

.info-item:hover {
  transform: translateX(-5px);
  border-bottom-color: var(--primary-blue);
}

.info-label {
  font-weight: bold;
  color: var(--text-dark);
  min-width: 140px;
  font-size: 1.05rem;
}

.info-value {
  color: var(--primary-blue);
  text-align: left;
  flex: 1;
  margin-right: 15px;
  font-weight: 600;
  word-break: break-word;
}

.status-active {
  color: var(--success-green);
  font-weight: bold;
  text-shadow: 0 1px 2px rgba(25, 135, 84, 0.2);
}

.status-inactive {
  color: var(--danger-red);
  font-weight: bold;
  text-shadow: 0 1px 2px rgba(220, 53, 69, 0.2);
}

.admin-badge {
  background: linear-gradient(135deg, 
    rgba(25, 135, 84, 0.8), /* از ۰.۶ به ۰.۸ */
    rgba(40, 167, 69, 0.8)  /* از ۰.۶ به ۰.۸ */
  );
  color: white;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  margin-right: 10px;
  box-shadow: 0 2px 8px rgba(25, 135, 84, 0.3); /* سایه هم پررنگ‌تر */
}

/* =======================
   Certificate Card Styles
======================= */
.certificate-card {
  background: linear-gradient(135deg, var(--card-bg), var(--light-blue));
  border: 2px solid var(--primary-blue);
  border-radius: var(--border-radius);
  padding: 25px;
  margin: 20px 0;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.certificate-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 8px;
  height: 100%;
  background: linear-gradient(to bottom, var(--primary-blue), var(--primary-blue-light));
}

.certificate-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--card-shadow-hover);
}

.certificate-header {
  border-bottom: 2px solid var(--primary-blue);
  padding-bottom: 18px;
  margin-bottom: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.certificate-title {
  color: var(--primary-blue);
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 5px;
}

.certificate-code {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 1rem;
  display: inline-block;
  margin-top: 5px;
  box-shadow: 0 2px 8px rgba(4, 92, 180, 0.3);
}

.certificate-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.detail-item {
  display: flex;
  flex-direction: column;
  padding: 12px;
  background: var(--light-gray);
  border-radius: var(--border-radius-sm);
  transition: var(--transition);
  border: 1px solid var(--light-gray-2);
}

.detail-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.detail-label {
  font-weight: 700;
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.detail-value {
  color: var(--dark-blue);
  font-weight: 600;
  font-size: 1.05rem;
}

/* =======================
   Form Card Styles
======================= */
.form-card {
  background: linear-gradient(135deg, var(--light-gray), var(--light-blue-2));
  padding: 30px;
  border-radius: var(--border-radius);
  border: 2px solid var(--primary-blue);
  margin: 25px 0;
  box-shadow: var(--card-shadow);
  transition: var(--transition);
}

.form-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--card-shadow-hover);
}

.form-card-title {
  color: var(--primary-blue);
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 25px;
  text-align: center;
  border-bottom: 2px solid var(--primary-blue);
  padding-bottom: 15px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* =======================
   Result Display
======================= */
.result-container {
  background: var(--light-gray);
  padding: 25px;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--primary-blue);
  margin-top: 25px;
  max-height: 600px;
  overflow-y: auto;
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.05);
}

.json-result {
  background: var(--light-gray-2);
  color: var(--text-dark);
  padding: 20px;
  border-radius: var(--border-radius-sm);
  font-family: 'Vazir', 'Courier New', monospace;
  font-size: 0.95rem;
  white-space: pre-wrap;
  word-wrap: break-word;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* =======================
   Alerts (Error & Success)
======================= */
.alert {
  margin-bottom: 1.5rem;
  padding: 16px;
  border-radius: var(--border-radius-sm);
  display: none;
  text-align: right;
  animation: fadeIn 0.5s ease-out;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border-right: 5px solid transparent;
}

.alert i {
  margin-left: 8px;
}

.error {
  color: var(--danger-red);
  background: linear-gradient(135deg, rgba(220, 53, 69, 0.1), rgba(231, 76, 60, 0.1));
  border-right-color: var(--danger-red);
  animation: shake 0.5s cubic-bezier(.36,.07,.19,.97) both;
}

.success {
  color: var(--success-green);
  background: linear-gradient(135deg, rgba(25, 135, 84, 0.1), rgba(32, 201, 151, 0.1));
  border-right-color: var(--success-green);
}

/* =======================
   Additional Options
======================= */
.login-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.8rem;
  font-size: 1rem;
  flex-wrap: wrap;
  gap: 10px;
}

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

.remember-me input {
  margin-left: 8px;
  transform: scale(1.2);
  cursor: pointer;
}

.remember-me label {
  cursor: pointer;
  color: var(--text-dark);
}

.forgot-password {
  color: var(--primary-blue);
  text-decoration: none;
  transition: var(--transition);
  font-weight: 600;
}

.forgot-password:hover {
  color: var(--dark-blue);
  text-decoration: underline;
  transform: translateX(-3px);
}

/* =======================
   Loading Spinner
======================= */
.loading-spinner {
  display: none;
  margin: 10px auto;
  text-align: center;
}

.spinner {
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top: 3px solid var(--white);
  width: 24px;
  height: 24px;
  animation: spin 1s linear infinite;
  display: inline-block;
  margin-left: 12px;
}

/* =======================
   Hidden Class
======================= */
.hidden {
  display: none !important;
}

/* =======================
   Animations
======================= */
@keyframes slideIn {
  0% { opacity: 0; transform: translateY(40px); }
  100% { opacity: 1; transform: translateY(0); }
}

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

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
  20%, 40%, 60%, 80% { transform: translateX(5px); }
}

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

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

/* =======================
   Responsive Design
======================= */
@media (max-width: 768px) {
  .login-container, .user-container, .admin-container {
    padding: 1.8rem;
    margin: 10px;
  }

  .admin-nav {
    flex-direction: column;
  }

  .nav-btn {
    min-width: 100%;
  }

  .info-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .info-value {
    margin-right: 0;
    margin-top: 8px;
    text-align: right;
  }

  .certificate-details {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .certificate-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .certificate-code {
    margin-top: 10px;
  }

  .login-title, .user-title, .admin-title {
    font-size: 1.7rem;
  }

  .section-title {
    font-size: 1.2rem;
  }

  .theme-toggle {
    top: 10px;
    left: 10px;
    transform: scale(0.9);
  }
}

@media (max-width: 480px) {
  body {
    padding: 10px;
  }

  .login-container, .user-container, .admin-container {
    padding: 1.5rem;
  }

  .login-title, .user-title, .admin-title {
    font-size: 1.5rem;
  }

  .form-card {
    padding: 20px;
  }

  .certificate-card {
    padding: 20px;
  }

  .login-options {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
  }

  .theme-toggle {
    top: 5px;
    left: 5px;
    transform: scale(0.8);
  }
}

/* =======================
   Print Styles
======================= */
@media print {
  .theme-toggle,
  .btn-logout,
  .nav-btn:not(.active) {
    display: none !important;
  }

  .container {
    box-shadow: none !important;
    border: 1px solid #000 !important;
  }

  .certificate-card {
    break-inside: avoid;
    page-break-inside: avoid;
  }
}