:root {
  /* Color Palette */
  --color-primary: #8f9491; /* Gray-green - primary text, headings */
  --color-secondary: #bca3ac; /* Dusty rose - buttons, focus states */
  --color-tertiary: #e5cedc; /* Light pink - gradient end */
  --color-light: #f3eaf4; /* Very light pink - backgrounds */
  --color-border: #eadde1; /* Soft pink - borders */

  /* Neutral Colors */
  --color-white: #ffffff;
  --color-text: #333333;
  --color-text-muted: #666666;
  --color-text-light: #555555;
  --color-disabled: #cccccc;
  --color-hover-dark: #6c757d;

  /* Semantic Colors */
  --color-error-bg: #fee;
  --color-error-border: #f88;
  --color-error-text: #c00;
  --color-success-bg: #d4edda;
  --color-success-border: #c3e6cb;
  --color-success-text: #155724;
  --color-success-icon: #28a745;
  --color-logout: #dc3545;
  --color-logout-hover: #c82333;
}

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

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    Arial, sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background: linear-gradient(
    135deg,
    var(--color-secondary) 0%,
    var(--color-tertiary) 100%
  );
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  text-align: center;
  margin-bottom: 40px;
  padding-top: 40px;
  position: relative;
}

header h1 {
  color: var(--color-light);
  font-size: 3rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
  animation: fadeInDown 0.8s ease;
}

.user-info {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.95);
  padding: 10px 20px;
  border-radius: 25px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  gap: 15px;
}

.user-info span {
  color: var(--color-text);
}

.btn-logout {
  background: var(--color-logout);
  color: var(--color-white);
  text-decoration: none;
  padding: 8px 16px;
  border-radius: 20px;
  transition: background 0.3s ease;
}

.btn-logout:hover {
  background: var(--color-logout-hover);
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  align-items: center;
  padding: 20px 0;
}

.url-shortener-card {
  background: var(--color-white);
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  max-width: 600px;
  width: 100%;
  animation: fadeInUp 0.8s ease;
  margin-bottom: 30px;
}

.url-shortener-card h2 {
  color: var(--color-primary);
  margin-bottom: 10px;
  font-size: 1.8rem;
  text-align: center;
}

.url-shortener-card > p {
  color: var(--color-text-muted);
  margin-bottom: 30px;
  text-align: center;
}

.form-group {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.url-input {
  flex: 1;
  padding: 12px 16px;
  font-size: 1rem;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  transition: border-color 0.3s ease;
}

.url-input:focus {
  outline: none;
  border-color: var(--color-secondary);
}

.result-card {
  background: var(--color-light);
  border: 2px solid var(--color-secondary);
  border-radius: 8px;
  padding: 20px;
  margin-top: 20px;
  text-align: center;
  position: relative;
}

.result-card h3 {
  color: var(--color-text);
  margin-bottom: 15px;
}

.close-success {
  position: absolute;
  top: 10px;
  right: 15px;
  background: none;
  border: none;
  font-size: 24px;
  color: var(--color-text-muted);
  cursor: pointer;
  line-height: 1;
  padding: 5px;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.close-success:hover {
  background: rgba(0, 0, 0, 0.1);
  color: var(--color-text);
}

.short-url-display {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--color-white);
  padding: 10px 15px;
  border-radius: 6px;
  border: 1px solid var(--color-border);
}

.short-url-display a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1rem;
}

.btn-copy {
  background: var(--color-secondary);
  color: var(--color-white);
  border: none;
  padding: 8px 4px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.3s ease;
  width: 70px;
  text-align: center;
}

.btn-copy:hover {
  background: var(--color-primary);
}

.error-message {
  background: var(--color-error-bg);
  border: 2px solid var(--color-error-border);
  border-radius: 8px;
  padding: 15px;
  margin-top: 20px;
  color: var(--color-error-text);
  text-align: center;
}

.recent-urls {
  background: var(--color-white);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  max-width: 900px;
  width: 100%;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.recent-urls h3 {
  color: var(--color-primary);
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.url-table {
  width: 100%;
  border-collapse: collapse;
}

.url-table th {
  background: var(--color-light);
  color: var(--color-primary);
  padding: 12px;
  text-align: left;
  border-bottom: 2px solid var(--color-border);
}

.url-table td {
  padding: 12px;
  border-bottom: 1px solid var(--color-border);
}

.url-table tr:hover {
  background: var(--color-light);
}

.url-table a {
  color: var(--color-primary);
  text-decoration: none;
  font-family: monospace;
}

.url-table a:hover {
  text-decoration: underline;
}

.truncate {
  max-width: 300px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.no-urls {
  text-align: center;
  color: var(--color-text-muted);
  padding: 40px;
  font-style: italic;
}

.qr-code-section {
  margin-top: 25px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.qr-code-section h4 {
  color: var(--color-primary);
  margin-bottom: 15px;
  font-size: 1.1rem;
}

.qr-code-image {
  width: 200px;
  height: 200px;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  display: block;
  margin: 0 auto 10px;
  background: var(--color-white);
}

.qr-code-help {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin: 0;
}

.qr-code-table {
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-white);
}

/* Modal Styles */
.modal {
  display: none;
  position: fixed;
  z-index: 1000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(2px);
}

.modal-content {
  background-color: var(--color-white);
  margin: 5% auto;
  padding: 0;
  border-radius: 12px;
  width: 90%;
  max-width: 750px;
  max-height: 85vh;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: modalSlideIn 0.3s ease;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(-50px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.modal-header {
  background: linear-gradient(
    135deg,
    var(--color-secondary) 0%,
    var(--color-tertiary) 100%
  );
  color: var(--color-white);
  padding: 20px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
  border-radius: 12px 12px 0 0;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.5rem;
}

.close {
  color: var(--color-white);
  font-size: 28px;
  font-weight: bold;
  cursor: pointer;
  line-height: 1;
  padding: 0;
  background: none;
  border: none;
  opacity: 0.8;
  transition: opacity 0.3s ease;
}

.close:hover {
  opacity: 1;
}

.modal-body {
  padding: 30px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 30px;
  align-items: start;
  overflow-y: auto;
  flex: 1;
  min-height: 0;
}

.modal-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.info-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-sizing: border-box;
}

.info-row strong {
  color: var(--color-primary);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.url-display {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--color-light);
  padding: 12px 15px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.url-display a {
  font-family: monospace;
  font-weight: bold;
  color: var(--color-primary);
  flex: 1;
  word-break: break-all;
  text-decoration: none;
  transition: color 0.3s ease;
}

.url-display a:hover {
  color: var(--color-secondary);
  text-decoration: underline;
}

.btn-copy-modal {
  background: var(--color-secondary);
  color: var(--color-white);
  border: none;
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.3s ease;
  width: 60px;
  text-align: center;
}

.btn-copy-modal:hover {
  background: var(--color-primary);
}

.original-url {
  background: var(--color-light);
  padding: 13px 15px;
  border-radius: 8px;
  border: 2px solid var(--color-border);
  word-break: break-all;
  font-size: 0.95rem;
  color: var(--color-text-light);
  box-sizing: border-box;
  width: 100%;
  min-height: 50px;
  display: flex;
  align-items: flex-start;
  line-height: 1.4;
  padding-top: 15px;
  padding-bottom: 15px;
}

.modal-qr {
  text-align: center;
  background: var(--color-light);
  padding: 25px;
  border-radius: 12px;
  border: 2px solid var(--color-border);
}

.modal-qr h3 {
  color: var(--color-primary);
  margin: 0 0 15px 0;
  font-size: 1.2rem;
}

.qr-code-modal {
  width: 200px;
  height: 200px;
  border: 2px solid var(--color-white);
  border-radius: 8px;
  display: block;
  margin: 0 auto 10px;
  background: var(--color-white);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Clickable row styles */
.clickable-row {
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.clickable-row:hover {
  background-color: var(--color-light) !important;
}

/* Edit form styles */
.btn-edit {
  background: var(--color-secondary);
  color: var(--color-white);
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.3s ease;
}

.btn-edit:hover {
  background: var(--color-primary);
}

.edit-url-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  box-sizing: border-box;
}

.edit-url-input {
  padding: 13px 15px;
  font-size: 0.95rem;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  transition: border-color 0.3s ease;
  font-family: inherit;
  box-sizing: border-box;
  width: 100%;
  height: 50px;
  background: var(--color-light);
  line-height: 24px;
  margin: 0;
}

.edit-url-input:focus {
  outline: none;
  border-color: var(--color-secondary);
}

.edit-buttons {
  display: flex;
  gap: 10px;
}

.btn-save {
  background: var(--color-secondary);
  color: var(--color-white);
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.3s ease;
  min-width: 70px;
}

.btn-save:hover:not(:disabled) {
  background: var(--color-primary);
}

.btn-save:disabled {
  background: var(--color-disabled);
  cursor: not-allowed;
}

.btn-cancel {
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background 0.3s ease;
}

.btn-cancel:hover:not(:disabled) {
  background: var(--color-hover-dark);
}

.btn-cancel:disabled {
  background: var(--color-disabled);
  cursor: not-allowed;
}

#urlDisplayMode {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  width: 100%;
  box-sizing: border-box;
}

#urlEditMode {
  width: 100%;
  box-sizing: border-box;
}

#urlEditMode form {
  width: 100%;
}

#urlDisplayMode .original-url {
  width: 100%;
}

/* Success message styles */
.update-success {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
  color: var(--color-success-text);
  padding: 10px 15px;
  border-radius: 6px;
  font-size: 0.9rem;
  animation: fadeInSuccess 0.3s ease;
}

.success-icon {
  font-weight: bold;
  font-size: 1.1rem;
  color: var(--color-success-icon);
}

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

/* Mobile responsive modal */
@media (max-width: 768px) {
  .modal-content {
    width: 95%;
    margin: 2% auto;
    max-height: 95vh;
  }

  .modal-body {
    grid-template-columns: 1fr;
    gap: 25px;
    padding: 20px;
  }

  .modal-header {
    padding: 15px 20px;
  }

  .qr-code-modal {
    width: 150px;
    height: 150px;
  }

  .url-display {
    flex-direction: column;
    align-items: stretch;
  }

  #urlDisplayMode {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .edit-buttons {
    flex-direction: column;
    width: 100%;
  }

  .edit-buttons button {
    width: 100%;
  }
}

@media (max-height: 600px) {
  .modal-content {
    margin: 1% auto;
    max-height: 98vh;
  }

  .modal-header {
    padding: 15px 20px;
  }

  .modal-body {
    padding: 20px;
  }
}

.features {
  background: var(--color-light);
  border-radius: 8px;
  padding: 20px;
  margin-bottom: 30px;
}

.features h3 {
  color: var(--color-primary);
  margin-bottom: 15px;
}

.features ul {
  list-style-position: inside;
  color: var(--color-text-muted);
}

.features li {
  margin-bottom: 10px;
  padding-left: 10px;
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--color-secondary) 0%,
    var(--color-tertiary) 100%
  );
  color: var(--color-white);
  border: none;
  padding: 12px 30px;
  font-size: 1rem;
  border-radius: 25px;
  cursor: pointer;
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 20px rgba(188, 163, 172, 0.4);
}

footer {
  text-align: center;
  padding: 20px;
  color: var(--color-white);
  margin-top: 40px;
}

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.login-main {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.login-card {
  background: var(--color-white);
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
  max-width: 400px;
  width: 100%;
  animation: fadeInUp 0.8s ease;
}

.login-card h2 {
  color: var(--color-primary);
  margin-bottom: 10px;
  font-size: 2rem;
  text-align: center;
}

.login-card p {
  color: var(--color-text-muted);
  margin-bottom: 30px;
  text-align: center;
}

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

.form-field label {
  display: block;
  color: var(--color-text);
  margin-bottom: 8px;
  font-weight: 500;
}

.login-input {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  transition: border-color 0.3s ease;
}

.login-input:focus {
  outline: none;
  border-color: var(--color-secondary);
}

.btn-login {
  width: 100%;
  margin-top: 10px;
}

.info-message {
  background: var(--color-success-bg);
  border: 2px solid var(--color-success-border);
  border-radius: 8px;
  padding: 15px;
  margin-top: 20px;
  color: var(--color-success-text);
  text-align: center;
}

@media (max-width: 768px) {
  header h1 {
    font-size: 2rem;
  }

  .user-info {
    position: static;
    margin-top: 20px;
    border-radius: 12px;
  }

  .url-shortener-card {
    padding: 30px 20px;
  }

  .url-shortener-card h2 {
    font-size: 1.5rem;
  }

  .form-group {
    flex-direction: column;
  }

  .recent-urls {
    padding: 20px;
    overflow-x: auto;
  }

  .url-table {
    font-size: 0.9rem;
  }

  .login-card {
    padding: 30px 20px;
  }
}