:root {
    --primary-color: #171717; 
    --accent-color: #222222;
    --border-color: #282828;
    --text-color: #e5e5e5;
    --description-color: #A8AAAD;
    --interactive-color: #FFDB58;
  }

  body {
    background-color: var(--primary-color);
    color: var(--text-color);
    color-scheme: dark;
    font-family: 'Roboto', sans-serif;
    font-weight: 500;
  }

  .hidden {
    display: none !important;
  }

  .auth-view {
    display: grid;
    place-items: center;
    min-height: 100vh;
    padding: 24px;
    box-sizing: border-box;
  }

  .auth-card {
    position: relative;
    width: min(900px, 100%);
    min-height: 520px;
    overflow: hidden;
    background: var(--accent-color);
    border: 1px solid #343434;
    border-radius: 18px;
    box-shadow: 0 24px 70px rgb(0 0 0 / 40%);
  }

  .auth-forms {
    position: absolute;
    inset: 0;
  }

  .auth-form {
    position: absolute;
    top: 0;
    width: 50%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 10px;
    padding: 56px;
    box-sizing: border-box;
    transition: transform 450ms ease, opacity 300ms ease;
  }

  .auth-form h1 {
    color: var(--interactive-color);
    margin: 0;
  }

  .auth-form p {
    color: var(--description-color);
    margin: 0 0 14px;
  }

  .auth-form input {
    box-sizing: border-box;
    width: 100%;
    padding: 12px 14px;
    color: var(--text-color);
    background: #191919;
    border: 1px solid #3b3b3b;
    border-radius: 7px;
  }

  .auth-form input:focus {
    outline: 2px solid var(--interactive-color);
    outline-offset: 1px;
  }

  .auth-form button, .auth-switch-panel button {
    padding: 11px 24px;
    border: 2px solid var(--interactive-color);
    border-radius: 999px;
    cursor: pointer;
    font-weight: 700;
  }

  .auth-form button {
    margin-top: 14px;
    color: var(--primary-color);
    background: var(--interactive-color);
  }

  .auth-form .auth-text-button {
    width: fit-content;
    margin: 2px 0 0 auto;
    padding: 2px;
    color: var(--description-color);
    background: transparent;
    border: 0;
    border-radius: 0;
    font-weight: 500;
  }

  .auth-form .auth-text-button:hover {
    color: var(--interactive-color);
  }

  #dev-reset-link {
    color: var(--interactive-color);
    text-align: center;
  }

  .verification-help {
    margin-top: 12px;
    padding: 12px;
    background: #191919;
    border: 1px solid #3b3b3b;
    border-radius: 8px;
  }

  .verification-help p {
    margin: 0 0 8px;
  }

  .verification-help a {
    display: inline-block;
    color: var(--interactive-color);
    margin-bottom: 8px;
  }

  .verification-help button {
    width: 100%;
    margin-top: 4px;
    padding: 8px 12px;
  }

  .login-form {
    left: 0;
  }

  .signup-form {
    left: 50%;
    opacity: 0;
    pointer-events: none;
  }

  .recovery-form, .reset-form {
    left: 0;
    opacity: 0;
    pointer-events: none;
  }

  .auth-card.signup-mode .login-form {
    opacity: 0;
    pointer-events: none;
    transform: translateX(100%);
  }

  .auth-card.signup-mode .signup-form {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(0);
  }

  .auth-card.recovery-mode .login-form,
  .auth-card.reset-mode .login-form {
    opacity: 0;
    pointer-events: none;
    transform: translateX(-20px);
  }

  .auth-card.recovery-mode .recovery-form,
  .auth-card.reset-mode .reset-form {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(0);
  }

  .auth-switch-panel {
    position: absolute;
    top: 0;
    left: 50%;
    z-index: 2;
    width: 50%;
    height: 100%;
    color: var(--primary-color);
    background: var(--interactive-color);
    transition: transform 450ms ease;
  }

  .auth-card.signup-mode .auth-switch-panel {
    transform: translateX(-100%);
  }

  .auth-switch-copy {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px;
    text-align: center;
    box-sizing: border-box;
    transition: opacity 220ms ease;
  }

  .auth-switch-copy h2 {
    margin-bottom: 8px;
    font-size: 2rem;
  }

  .auth-switch-copy p {
    max-width: 280px;
    line-height: 1.5;
  }

  .auth-switch-panel button {
    color: var(--primary-color);
    background: transparent;
    border-color: var(--primary-color);
  }

  .signup-prompt {
    opacity: 0;
    pointer-events: none;
  }

  .auth-card.signup-mode .login-prompt {
    opacity: 0;
    pointer-events: none;
  }

  .auth-card.signup-mode .signup-prompt {
    opacity: 1;
    pointer-events: auto;
  }

  .site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: calc(100% - 40px);
    max-width: 1100px;
    margin: 20px auto 0;
  }

  .site-header h1 {
    color: var(--interactive-color);
    font-size: 1.4rem;
    margin: 0;
  }

  #user-greeting {
    display: block;
    margin-top: 4px;
    color: var(--description-color);
    font-size: 0.9rem;
  }

  .header-actions {
    display: flex;
    gap: 8px;
  }

  #message-handler {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
    box-sizing: border-box;
    width: min(360px, calc(100vw - 48px));
    padding: 14px 16px;
    color: var(--text-color);
    background-color: #242424;
    border: 1px solid #3a3a3a;
    border-left: 4px solid var(--interactive-color);
    border-radius: 10px;
    box-shadow: 0 12px 30px rgb(0 0 0 / 35%);
    line-height: 1.4;
    overflow-wrap: anywhere;
    animation: notification-in 180ms ease-out;
  }

  #message-handler.error {
    border-left-color: #ff5a5f;
  }

  #message-handler:empty {
    display: none;
  }

  @keyframes notification-in {
    from {
      opacity: 0;
      transform: translateY(8px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  .container {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-areas:
      "day session"
      "exercise exercise";
    align-content: center;
    align-items: center;
    width: calc(100% - 40px);
    max-width: 1100px;
    margin: 0 auto;
    min-height: 85vh;
    gap: 25px;
  }

  .day-section {
    grid-area: day;
  }

  .session-section {
    grid-area: session;
  }

  .container > .exercise-section {
    grid-area: exercise;
    justify-self: center;
    width: calc(50% - 12.5px);
  }

  @media screen and (max-width: 700px) {
    .container {
      grid-template-columns: 1fr;
      grid-template-areas:
        "day"
        "session"
        "exercise";
    }
    .container > .exercise-section {
      width: 100%;
    }
    #message-handler {
      top: 12px;
      bottom: auto;
      right: 12px;
      left: 12px;
      width: auto;
      text-align: left;
    }
  }

  .day-section, .exercise-section, .session-section {
    position: relative;
    background-color: var(--accent-color);
    border: 1px solid #303030;
    border-radius: 12px;
    box-shadow: 0 12px 28px rgb(0 0 0 / 18%);
    padding: 50px;
    min-height: 20vh;
    min-width: 20vw;
    width: 100%;
    box-sizing: border-box;
    list-style: none;
  }

  .exercise-section:not([open]) {
    min-height: 0;
    padding: 20px 30px;
  }

  #exercise-header {
    cursor: pointer;
  }

  .exercise-section[open] #exercise-header {
    margin-bottom: 24px;
  }

  .exercise-list:empty, .sess-log-list:empty {
    display: none;
  }

  #day-header, #exercise-header, #session-header  {
    color: var(--interactive-color);
    font-weight: 600;
    font-size: large;
  }

  .list-elements {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px 20px;
    padding: 10px 0;
  }

  .exercise-list, .sess-log-list {
    padding-left: 0;
  }

  .list-elements > span:first-child {
    min-width: 0;
    overflow-wrap: anywhere;
  }

  .exercise-actions, .list-divs {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 8px;
  }

  .exercise-actions button, .list-divs button,
  .remove-confirmation button {
    margin: 0;
  }

  label {
    display: block;
  }

  .submit-day-btn, #day-select, #create-sess-btn, #sess-date,
  .submit-date-btn, #home-btn, #logout-btn, #new-log-btn,
  #log-more-btn, #edit-log-btn, #save-edit-btn, #cancel-edit-btn, #delete-log-btn,
  #delete-session-btn, #add-logs-btn, #exercise-day, #add-exercise-btn,
  #edit-exercise-btn, #save-exercise-btn, #cancel-exercise-btn,
  #remove-exercise-btn, #save-split-btn, #split-days,
  #confirm-remove-exercise-btn, #keep-exercise-btn {
    color: var(--text-color);
    background-color: #191919;
    border-radius: 5px;
    padding: 5px 17px;
    border: 1px solid #3b3b3b;
    transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
    margin-left: 10px;
    margin-top: 10px;
  }

  #day-select, #sess-date, #exercise-day, #split-days {
    color: var(--text-color);
    background-color: #191919;
  }

  .new-weight-input, .new-reps-input,
  .updated-weight-input, .updated-reps-input,
  #exercise-name, #exercise-sets, #exercise-reps,
  .edit-exercise-name, .edit-exercise-sets, .edit-exercise-reps {
    width: 70px;
    height: 30px;
    border-radius: 5px;
    border: 2px solid; 
    border-color: #3b3b3b;
    color: var(--text-color);
    background-color: #191919;
    transition: border-color 0.3s ease; 
   
  }

  .new-weight-input:hover, .new-reps-input:hover, .updated-weight-input:hover, .updated-reps-input:hover,
  .submit-day-btn:hover, #day-select:hover, #create-sess-btn:hover, #sess-date:hover, 
  .submit-date-btn:hover, #home-btn:hover, #logout-btn:hover, #new-log-btn:hover,
  #log-more-btn:hover, #edit-log-btn:hover, #add-logs-btn:hover, #cancel-edit-btn:hover,
  #delete-log-btn:hover, #delete-session-btn:hover, #exercise-day:hover, #add-exercise-btn:hover,
  #edit-exercise-btn:hover, #save-exercise-btn:hover, #cancel-exercise-btn:hover,
  #remove-exercise-btn:hover, #save-split-btn:hover, #split-days:hover,
  #confirm-remove-exercise-btn:hover, #keep-exercise-btn:hover {
    border-color: var(--interactive-color);
    background-color: #191919;
    cursor: pointer;
  }

  .submit-day-btn:hover, #create-sess-btn:hover, .submit-date-btn:hover,
  #home-btn:hover, #logout-btn:hover, #new-log-btn:hover, #log-more-btn:hover,
  #edit-log-btn:hover, #add-logs-btn:hover, #save-edit-btn:hover,
  #cancel-edit-btn:hover, #delete-log-btn:hover, #delete-session-btn:hover,
  #add-exercise-btn:hover, #edit-exercise-btn:hover, #save-exercise-btn:hover,
  #cancel-exercise-btn:hover, #remove-exercise-btn:hover, #save-split-btn:hover,
  #confirm-remove-exercise-btn:hover, #keep-exercise-btn:hover {
    color: var(--primary-color);
    background-color: var(--interactive-color);
  }

  #save-edit-btn:hover {
    border-color: green;
    background-color: var(--interactive-color);
    cursor: pointer;
  }
  #cancel-edit-btn:hover, #delete-log-btn:hover, #delete-session-btn:hover,
  #cancel-exercise-btn:hover, #remove-exercise-btn:hover,
  #confirm-remove-exercise-btn:hover {
    border-color: red;
    color: white;
    background-color: #c83f44;
  }

  #day-select:focus, #sess-date:focus, #exercise-day:focus, #split-days:focus,
  .new-weight-input:focus, .new-reps-input:focus,
  .updated-weight-input:focus, .updated-reps-input:focus,
  #exercise-name:focus, #exercise-sets:focus, #exercise-reps:focus,
  .edit-exercise-name:focus, .edit-exercise-sets:focus,
  .edit-exercise-reps:focus {
    outline: 2px solid var(--interactive-color);
    outline-offset: 1px;
  }

  #split-form, #exercise-form {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  #split-days {
    box-sizing: border-box;
    width: 100%;
    margin-left: 0;
  }

  #save-split-btn {
    margin-left: 0;
  }

  .exercise-subheader {
    color: var(--interactive-color);
    margin-top: 28px;
  }

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

  .exercise-targets {
    display: flex;
    gap: 12px;
  }

  .exercise-targets > div {
    flex: 1;
  }

  #exercise-sets, #exercise-reps {
    box-sizing: border-box;
    width: 100%;
  }

  #add-exercise-btn {
    margin-left: 0;
  }

  .edit-exercise-controls {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    grid-column: 1 / -1;
    margin-left: 0;
  }

  .edit-exercise-controls button {
    margin: 0;
  }

  .edit-exercise-name {
    width: 150px;
  }

  .remove-confirmation {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
  }

  .edit-log-controls {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    grid-column: 1 / -1;
  }

  .edit-log-controls button {
    margin: 0;
  }

  @media screen and (max-width: 700px) {
    .list-elements {
      grid-template-columns: 1fr;
    }

    .exercise-actions, .list-divs {
      justify-content: flex-start;
    }

    .auth-view {
      padding: 12px;
    }

    .auth-card {
      min-height: 680px;
    }

    .auth-forms {
      height: 74%;
    }

    .auth-form {
      left: 0;
      width: 100%;
      padding: 34px 28px;
    }

    .signup-form {
      opacity: 1;
      transform: translateX(100%);
    }

    .auth-card.signup-mode .login-form {
      transform: translateX(-100%);
    }

    .auth-card.signup-mode .signup-form {
      transform: translateX(0);
    }

    .auth-switch-panel {
      top: 74%;
      left: 0;
      width: 100%;
      height: 26%;
    }

    .auth-card.signup-mode .auth-switch-panel {
      transform: none;
    }

    .auth-switch-copy {
      padding: 18px 28px;
    }

    .auth-switch-copy h2 {
      margin: 0;
      font-size: 1.4rem;
    }

    .auth-switch-copy p {
      margin: 8px 0;
    }

    .site-header {
      align-items: flex-start;
    }
  }