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

:root {
  --primary-color: #FF6B6B;
  --primary-hover: #FF5252;
  --accent-color: #4ECDC4;
  --danger-color: #FF4757;
  --success-color: #2ED573;
  --warning-color: #FFA502;

  --bg-primary: #0A0E27;
  --bg-secondary: #131729;
  --bg-tertiary: #1A1F3A;
  --bg-elevated: #1F2544;

  --text-primary: #FFFFFF;
  --text-secondary: #B8C1EC;
  --text-muted: #6B7588;

  --border-color: #2A2F45;
  --border-subtle: #1F2544;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);

  --glow-primary: 0 0 20px rgba(255, 107, 107, 0.3);
  --glow-accent: 0 0 20px rgba(78, 205, 196, 0.3);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, #0A0E27 0%, #131729 100%);
  animation: pageSlide 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  min-height: 100vh;
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 15px;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@keyframes pageSlide {
  from {
    opacity: 0;
    transform: translateY(12px);
  }

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

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
}

#ercont {
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

/* Header */
.header {
  background: rgba(19, 23, 41, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-md);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 1000;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo img {
  user-drag: none;
  -webkit-user-drag: none;
  user-select: none;
  -moz-user-select: none;
  -webkit-user-select: none;
  -ms-user-select: none;
  width: 80px;
  object-fit: contain;
  filter: drop-shadow(0 0 8px var(--primary-color));
  transition: transform 0.3s ease, filter 0.3s ease;
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 16px;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 8px;
}

.nav-links a:hover {
  color: var(--text-primary);
  background: var(--bg-elevated);
}

/* Buttons */
.btn {
  padding: 12px 28px;
  border: none;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
  letter-spacing: -0.01em;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.btn:hover::before {
  transform: translateX(100%);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, #FF5252 100%);
  color: white;
  box-shadow: var(--shadow-md), var(--glow-primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(255, 107, 107, 0.4);
}

.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-tertiary);
  border-color: var(--primary-color);
}

.btn-danger {
  background: var(--danger-color);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-danger:hover {
  background: #E84118;
  transform: translateY(-2px);
}

.btn-success {
  background: var(--success-color);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Cards */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  box-shadow: var(--shadow-md);
  padding: 28px;
  margin-bottom: 24px;
  transition: all 0.3s ease;
}

.card:hover {
  border-color: var(--border-subtle);
  box-shadow: var(--shadow-lg);
}

/* Forms */
.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  margin-bottom: 10px;
  font-weight: 600;
  font-size: 14px;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  font-size: 15px;
  color: var(--text-primary);
  transition: all 0.3s ease;
  font-family: inherit;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-color);
  background: var(--bg-elevated);
  box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-error {
  color: var(--danger-color);
  font-size: 13px;
  margin-top: 6px;
  font-weight: 500;
}

.form-success {
  color: var(--success-color);
  font-size: 13px;
  margin-top: 6px;
  font-weight: 500;
}

/* Auth Pages */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: radial-gradient(circle at top right, rgba(255, 107, 107, 0.1), transparent 50%),
    radial-gradient(circle at bottom left, rgba(78, 205, 196, 0.1), transparent 50%);
}

.auth-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  box-shadow: var(--shadow-xl);
  padding: 48px;
  width: 100%;
  max-width: 480px;
}

.auth-header {
  text-align: center;
  margin-bottom: 36px;
}

.auth-header h1 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--primary-color) 0%, #FF5252 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.auth-header p {
  color: var(--text-secondary);
  font-size: 15px;
}

.auth-footer {
  text-align: center;
  margin-top: 24px;
  color: var(--text-secondary);
}

.auth-footer a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s;
}

.auth-footer a:hover {
  color: var(--primary-hover);
}

/* Profile */
.profile-header {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 32px;
}

.profile-avatar {
  width: 140px;
  height: 140px;
  border-radius: 24px;
  object-fit: cover;
  border: 3px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

.profile-info h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.profile-info .age-location {
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 15px;
}

/* Photo Grid */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.photo-item {
  position: relative;
  padding-top: 100%;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease;
}

.photo-item:hover {
  transform: scale(1.03);
}

.photo-item img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo-delete {
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s;
  color: white;
  opacity: 0;
}

.photo-item:hover .photo-delete {
  opacity: 1;
}

.photo-delete:hover {
  background: var(--danger-color);
  transform: scale(1.1);
}

/* Notifications */
.notification {
  position: fixed;
  top: 90px;
  right: 24px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  box-shadow: var(--shadow-xl);
  padding: 18px 24px;
  z-index: 2000;
  max-width: 380px;
  animation: slideIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(20px);
}

@keyframes slideIn {
  from {
    transform: translateX(450px);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.notification-success {
  border-left: 3px solid var(--success-color);
}

.notification-error {
  border-left: 3px solid var(--danger-color);
}

.notification-info {
  border-left: 3px solid var(--primary-color);
}

/* Loading Spinner */
.spinner {
  border: 3px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  animation: spin 0.8s linear infinite;
  margin: 24px auto;
}

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

/* Match Badge */
.match-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  color: white;
  padding: 8px 16px;
  border-radius: 24px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: var(--glow-primary);
}

/* Online Status */
.online-status {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--success-color);
  border: 3px solid var(--bg-primary);
  position: absolute;
  bottom: 0;
  right: 0;
  box-shadow: 0 0 0 2px var(--success-color);
}

.online-status.offline {
  background: var(--text-muted);
  box-shadow: none;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-elevated);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-color);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    gap: 16px;
  }

  .nav-links span {
    display: none;
  }

  .auth-card {
    padding: 36px 24px;
  }

  .profile-header {
    flex-direction: column;
    text-align: center;
  }

  .photo-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
  }
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.mt-10 {
  margin-top: 10px;
}

.mt-20 {
  margin-top: 20px;
}

.mb-10 {
  margin-bottom: 10px;
}

.mb-20 {
  margin-bottom: 20px;
}

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.gap-10 {
  gap: 10px;
}

.gap-20 {
  gap: 20px;
}

.hidden {
  display: none;
}