/* Global styles */
* {
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

body {
  margin: 0;
  padding: 0;
  background: #050810;
  color: #e5e9f0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 24px;
}

.app {
  width: 100%;
  max-width: 1200px;
  background: radial-gradient(circle at 20% 10%, #11204a, #0b1123 80%);
  border-radius: 20px;
  padding: 24px;
  position: relative;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.hidden {
  display: none;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

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

.logo-img {
  height: 60px;
  width: auto;
}

.brand {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-size: 22px;
  font-weight: 700;
  text-transform: uppercase;
  color: #ffffff;
}

.brand-name .dot {
  color: #34e27c;
}

.brand-tag {
  font-size: 12px;
  color: #7c8aa9;
  letter-spacing: 0.1em;
}

.user-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 14px;
  color: #cdd6f0;
}

.contact-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #81a1c1;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
}

.contact-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #88c0d0;
  border-color: rgba(136, 192, 208, 0.3);
  transform: translateY(-1px);
}

.contact-btn svg {
  width: 18px;
  height: 18px;
}

/* Modal styles */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

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

.modal-content {
  background: linear-gradient(135deg, #2e3440 0%, #3b4252 100%);
  border-radius: 16px;
  padding: 32px;
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  position: relative;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { transform: translateY(-50px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 32px;
  font-weight: 300;
  color: #9aa8c7;
  cursor: pointer;
  transition: color 0.2s;
  line-height: 1;
}

.modal-close:hover {
  color: #e5e9f0;
}

.modal h2 {
  margin: 0 0 24px;
  font-size: 24px;
  color: #e5e9f0;
}

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

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: #9aa8c7;
  font-weight: 600;
}

.form-group input[type="email"],
.form-group textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: #e5e9f0;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s, background 0.2s;
  box-sizing: border-box;
}

.form-group input[type="email"]:focus,
.form-group textarea:focus {
  outline: none;
  border-color: rgba(136, 192, 208, 0.5);
  background: rgba(255, 255, 255, 0.08);
}

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

.error-message {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  color: #ff6b6b;
  min-height: 16px;
}

.success-message {
  text-align: center;
  padding: 20px;
}

.success-message strong {
  font-size: 18px;
  color: #2ed573;
  display: block;
  margin-bottom: 8px;
}

.success-message p {
  color: #9aa8c7;
  margin: 0;
}

.btn {
  padding: 10px 24px;
  border-radius: 8px;
  border: none;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4);
}

.btn {
  border: none;
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 14px;
  cursor: pointer;
  background: linear-gradient(135deg, #34e27c, #1ac0ff);
  color: #050810;
  font-weight: 600;
  transition: opacity 0.2s;
}

.btn:hover {
  opacity: 0.9;
}

.btn.secondary {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #e5e9f0;
}

main {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.entry-section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

@media (max-width: 960px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 16px;
  padding: 16px 20px 20px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  margin-bottom: 16px;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.card h2 {
  margin: 0 0 12px;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #cdd6f0;
}

.card-header h2 {
  margin: 0;
}

/* Privacy toggle */
.privacy-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
  font-size: 12px;
  color: #9aa8c7;
}

.privacy-toggle input[type="checkbox"] {
  appearance: none;
  width: 40px;
  height: 20px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  position: relative;
  cursor: pointer;
  transition: background 0.2s;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.privacy-toggle input[type="checkbox"]::before {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #ff6b6b;
  top: 1px;
  left: 2px;
  transition: all 0.2s;
}

.privacy-toggle input[type="checkbox"]:checked {
  background: rgba(52, 226, 124, 0.2);
}

.privacy-toggle input[type="checkbox"]:checked::before {
  background: #34e27c;
  left: 20px;
}

.toggle-label {
  font-weight: 500;
  transition: color 0.3s ease;
}

/* Chart view toggle */
.chart-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  user-select: none;
  font-size: 11px;
  color: #9aa8c7;
  padding: 4px 8px;
  border-radius: 4px;
  transition: background 0.2s;
}

.chart-toggle:hover {
  background: rgba(255, 255, 255, 0.05);
}

.chart-toggle input[type="radio"] {
  margin: 0;
  cursor: pointer;
}

.chart-toggle span {
  font-weight: 500;
}

/* Privacy setting rows */
.privacy-setting-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  cursor: pointer;
  transition: background 0.2s;
}

.privacy-setting-row:hover {
  background: rgba(255, 255, 255, 0.05);
}

.privacy-label {
  font-size: 14px;
  color: #e5e9f0;
  font-weight: 500;
}

.field-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.field {
  flex: 1 1 120px;
  min-width: 120px;
  display: flex;
  flex-direction: column;
}

/* Container to group weight input and unit selector */
.weight-field {
  display: flex;
  align-items: center;
}

/* Style the unit selector to match the dark theme */
.weight-field select {
  margin-left: 8px;
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: #e5e9f0;
  font-size: 14px;
}

/* Height field with ft and inches */
.height-field {
  display: flex;
  gap: 8px;
  align-items: center;
}

.height-ft,
.height-in {
  flex: 1;
  min-width: 60px;
}

/* Section titles for form organization */
.section-title {
  margin: 16px 0 8px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #7c8aa9;
  font-weight: 600;
}

label {
  font-size: 12px;
  margin-bottom: 4px;
  color: #9aa8c7;
}

input[type="number"],
input[type="date"],
input[type="text"],
select {
  padding: 6px 10px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: #e5e9f0;
  font-size: 14px;
}

select option {
  background: #2e3440;
  color: #e5e9f0;
}

select optgroup {
  background: #242933;
  color: #81a1c1;
  font-weight: 600;
}

input[type="number"]::placeholder,
input[type="text"]::placeholder {
  color: #7c8aa9;
}

.form-footer {
  display: flex;
  justify-content: flex-end;
  margin-top: 12px;
}

/* Silhouette styles */
.silhouette-card .silhouette-wrapper {
  display: flex;
  gap: 40px;
  align-items: flex-start;
  justify-content: flex-start;
}

.silhouette {
  width: 100px;
  height: 220px;
  border-radius: 40% 40% 30% 30% / 30% 30% 40% 40%;
  background: linear-gradient(180deg, #1ac0ff, #34e27c);
  transition: transform 0.3s, filter 0.3s;
  flex-shrink: 0;
}

.silhouette-info {
  font-size: 14px;
  line-height: 1.4;
}

.silhouette-info p {
  margin: 4px 0;
}

/* Silhouette image for male body */
.silhouette-img {
  width: 80px;
  height: auto;
  transition: transform 0.3s, filter 0.3s;
  flex-shrink: 0;
}

/* Projection cards */
.projection-card {
  background: rgba(26, 192, 255, 0.05);
  border: 1px solid rgba(26, 192, 255, 0.2);
  border-radius: 8px;
  padding: 16px;
  text-align: center;
}

.projection-period {
  font-size: 13px;
  color: #7c8aa9;
  font-weight: 600;
  margin-bottom: 8px;
}

.projection-weight {
  font-size: 28px;
  font-weight: 700;
  color: #1ac0ff;
  margin-bottom: 4px;
}

.projection-change {
  font-size: 12px;
  font-weight: 600;
}

.projection-change.positive {
  color: #34e27c;
}

.projection-change.negative {
  color: #ff6b6b;
}

.projection-change.neutral {
  color: #7c8aa9;
}

/* Chart canvas */
canvas {
  width: 100% !important;
  max-height: 300px !important;
}

#progress-chart {
  width: 100% !important;
  height: 350px !important;
}

/* Login modal */
.login-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.login-card {
  background: #0e1a33;
  padding: 32px;
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
}

.login-card h2 {
  margin-top: 0;
  color: #e5e9f0;
}

.login-card p {
  color: #a0b1d1;
  margin-bottom: 20px;
}

.login-card input[type="text"],
.login-card input[type="password"] {
  width: 100%;
  margin-bottom: 16px;
  padding: 12px 16px;
  font-size: 15px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.08);
  color: #e5e9f0;
  transition: border-color 0.2s, background 0.2s;
}

.login-card input[type="text"]:focus,
.login-card input[type="password"]:focus {
  outline: none;
  border-color: #34e27c;
  background: rgba(255, 255, 255, 0.1);
}

.login-card .btn {
  width: 100%;
  padding: 12px 16px;
  font-size: 15px;
}

/* Leaderboard styles */
.time-filter {
  padding: 8px 16px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.05);
  color: #9aa8c7;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 14px;
}

.time-filter:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
}

.time-filter.active {
  background: #34e27c;
  color: #0b1123;
  border-color: #34e27c;
}

.leaderboard-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  margin-bottom: 12px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  cursor: pointer;
  transition: all 0.2s;
}

.leaderboard-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.1);
  transform: translateX(4px);
}

.leaderboard-item .rank {
  font-size: 24px;
  font-weight: 600;
  min-width: 50px;
  text-align: center;
}

.leaderboard-item .user-info {
  flex: 1;
}

.leaderboard-item .user-name {
  font-size: 18px;
  font-weight: 600;
  color: #e5e9f0;
  margin-bottom: 4px;
}

.leaderboard-item .user-stats {
  font-size: 14px;
  color: #34e27c;
}

.leaderboard-item .view-profile {
  color: #81a1c1;
  font-size: 14px;
}