:root {
  /* Base colors */
  --color-primary: #4361ee;
  --color-secondary: #3f37c9;
  --color-accent: #4895ef;
  --color-danger: #f72585;
  --color-success: #4cc9f0;
  --color-warning: #f8961e;
  --color-info: #577590;

  /* Workout type colors */
  --color-running: #4cc9f0;
  --color-cycling: #f8961e;
  --color-swimming: #4361ee;
  --color-hiking: #7209b7;

  /* Dark shades */
  --color-dark--1: #1a1a2e;
  --color-dark--2: #16213e;
  --color-dark--3: #0f3460;

  /* Light shades */
  --color-light--1: #e2e2e2;
  --color-light--2: #f8f9fa;
  --color-light--3: #d8e2dc;
  --color-light--4: #ffffff;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);

  /* Border radius */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;

  /* Transitions */
  --transition-fast: 0.2s;
  --transition-normal: 0.3s;
  --transition-slow: 0.5s;
}

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

html {
  font-size: 62.5%;
  box-sizing: border-box;
}

/* Social Links */
.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-dark--3);
}

.social-link {
  color: var(--color-light--1);
  font-size: 1.8rem;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background-color: var(--color-dark--3);
}

.social-link:hover {
  transform: translateY(-3px);
  color: white;
}

.social-link:nth-child(1):hover { /* GitHub */
  background-color: #333;
}
.social-link:nth-child(2):hover { /* Instagram */
  background: linear-gradient(45deg, #405de6, #5851db, #833ab4, #c13584, #e1306c, #fd1d1d);
}
.social-link:nth-child(3):hover { /* Facebook */
  background-color: #4267B2;
}
.social-link:nth-child(4):hover { /* Email */
  background-color: #D44638;
}

/* Map controls */
.map-controls {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* User location marker */
.user-location-marker {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.6rem;
  text-shadow: 0 0 3px rgba(0, 0, 0, 0.5);
  transform: translate(-15px, -15px);
}

.btn--locate,
.btn--show-all {
  background-color: var(--color-light--4);
  color: var(--color-dark--1);
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.btn--locate:hover,
.btn--show-all:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

.btn--locate.active {
  background-color: var(--color-primary);
  color: white;
}

body {
  font-family: 'Manrope', sans-serif;
  color: var(--color-light--2);
  font-weight: 400;
  line-height: 1.6;
  height: 100vh;
  overscroll-behavior-y: none;
  background-color: var(--color-dark--3);
  padding: 0;
  display: flex;
}

/* Buttons */
.btn {
  background-color: var(--color-dark--2);
  color: var(--color-light--2);
  border: none;
  border-radius: var(--border-radius-sm);
  padding: 0.8rem 1.2rem;
  font-size: 1.4rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.btn:active {
  transform: translateY(0);
}

.btn--submit {
  background-color: var(--color-primary);
  color: white;
  font-weight: 600;
  padding: 1rem;
  width: 100%;
}

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

.btn--close-form {
  background: none;
  color: var(--color-light--1);
  padding: 0;
}

.btn--close-form:hover {
  color: var(--color-danger);
  transform: none;
}

.btn--import {
  background-color: var(--color-success);
  color: var(--color-dark--1);
}

.btn--export {
  background-color: var(--color-accent);
  color: var(--color-dark--1);
}

.btn--reset {
  background-color: var(--color-danger);
  color: white;
}

.btn--locate,
.btn--show-all {
  background-color: var(--color-light--4);
  color: var(--color-dark--1);
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  margin-bottom: 1rem;
}

/* Sidebar */
.sidebar {
  flex-basis: 45rem;
  background-color: var(--color-dark--1);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  overflow: hidden;
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.logo {
  height: 5.5rem;
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
}

.app-controls {
  display: flex;
  gap: 1rem;
}

/* Stats */
.stats-container {
  margin-bottom: 2rem;
}

.stats {
  background-color: var(--color-dark--2);
  border-radius: var(--border-radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.stats__title {
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  color: var(--color-light--1);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.stats__item {
  background-color: var(--color-dark--3);
  border-radius: var(--border-radius-sm);
  padding: 0.8rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stats__value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-light--4);
  margin-bottom: 0.3rem;
}

.stats__label {
  font-size: 1.1rem;
  color: var(--color-light--1);
  text-transform: uppercase;
  font-weight: 600;
  text-align: center;
}

/* Sort controls */
.sort-controls {
  background-color: var(--color-dark--2);
  border-radius: var(--border-radius-md);
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}

.sort-controls__header {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 1rem;
  color: var(--color-light--1);
}

.sort-controls h3 {
  font-size: 1.6rem;
}

.sort-select {
  width: 100%;
  padding: 0.8rem 1rem;
  border: none;
  border-radius: var(--border-radius-sm);
  background-color: var(--color-dark--3);
  color: var(--color-light--2);
  font-family: inherit;
  font-size: 1.4rem;
}

.sort-select:focus {
  outline: 2px solid var(--color-primary);
}

/* Workouts */
.workouts-container {
  flex: 1;
  overflow-y: auto;
  margin-bottom: 2rem;
}

.workouts {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding-right: 0.5rem;
}

.workouts::-webkit-scrollbar {
  width: 6px;
}

.workouts::-webkit-scrollbar-track {
  background: var(--color-dark--1);
}

.workouts::-webkit-scrollbar-thumb {
  background: var(--color-dark--3);
  border-radius: 3px;
}

.workouts::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

.workout {
  background-color: var(--color-dark--2);
  border-radius: var(--border-radius-md);
  padding: 1.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
  position: relative;
}

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

.workout--running {
  border-left: 4px solid var(--color-running);
}

.workout--cycling {
  border-left: 4px solid var(--color-cycling);
}

.workout--swimming {
  border-left: 4px solid var(--color-swimming);
}

.workout--hiking {
  border-left: 4px solid var(--color-hiking);
}

.workout__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.workout__title {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--color-light--4);
}

.workout__actions {
  display: flex;
  gap: 0.8rem;
}

.workout__edit,
.workout__delete {
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  padding: 0.4rem;
  border-radius: 50%;
  width: 2.8rem;
  height: 2.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.workout__edit {
  color: var(--color-accent);
  background-color: rgba(67, 97, 238, 0.1);
}

.workout__delete {
  color: var(--color-danger);
  background-color: rgba(247, 37, 133, 0.1);
}

.workout__edit:hover {
  color: white;
  background-color: var(--color-accent);
}

.workout__delete:hover {
  color: white;
  background-color: var(--color-danger);
}

.workout__details {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1rem;
}

.workout__detail {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.workout__icon {
  font-size: 1.6rem;
}

.workout__value {
  font-size: 1.4rem;
  font-weight: 600;
}

.workout__unit {
  font-size: 1.1rem;
  color: var(--color-light--1);
  text-transform: uppercase;
  font-weight: 600;
}

/* Form */
.form {
  background-color: var(--color-dark--2);
  border-radius: var(--border-radius-md);
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.5rem;
  transition: all var(--transition-normal), transform 1ms;
}

.form.hidden {
  transform: translateY(-30rem);
  height: 0;
  padding: 0 2.25rem;
  margin-bottom: 0;
  opacity: 0;
}

.form__header {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.form__header h3 {
  font-size: 1.6rem;
  color: var(--color-light--4);
}

.form__row {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.form__row--hidden {
  display: none;
}

.form__label {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-light--1);
}

.form__input {
  padding: 0.8rem 1rem;
  font-family: inherit;
  font-size: 1.4rem;
  border: none;
  border-radius: var(--border-radius-sm);
  background-color: var(--color-dark--3);
  color: var(--color-light--2);
  transition: all var(--transition-fast);
}

.form__input:focus {
  outline: 2px solid var(--color-primary);
  background-color: var(--color-dark--3);
}

.form__btn {
  grid-column: 1 / -1;
}

/* Map */
#map {
  flex: 1;
  height: 100%;
  background-color: var(--color-dark--3);
}

.map-controls {
  position: absolute;
  bottom: 2rem;
  right: 2rem;
  z-index: 1000;
  display: flex;
  flex-direction: column;
}

/* Popups */
.leaflet-popup .leaflet-popup-content-wrapper {
  background-color: var(--color-dark--1);
  color: var(--color-light--2);
  border-radius: var(--border-radius-md);
  padding-right: 0.8rem;
  box-shadow: var(--shadow-lg);
}

.leaflet-popup .leaflet-popup-content {
  font-size: 1.4rem;
  font-weight: 500;
}

.leaflet-popup .leaflet-popup-tip {
  background-color: var(--color-dark--1);
}

.running-popup .leaflet-popup-content-wrapper {
  border-left: 4px solid var(--color-running);
}
.cycling-popup .leaflet-popup-content-wrapper {
  border-left: 4px solid var(--color-cycling);
}
.swimming-popup .leaflet-popup-content-wrapper {
  border-left: 4px solid var(--color-swimming);
}
.hiking-popup .leaflet-popup-content-wrapper {
  border-left: 4px solid var(--color-hiking);
}

/* Copyright */
.copyright {
  margin-top: auto;
  font-size: 1.2rem;
  text-align: center;
  color: var(--color-light--1);
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-dark--3);
}

.copyright i {
  color: var(--color-danger);
}

/* Hidden utility class */
.hidden {
  display: none;
}

/* Responsive design */
@media (max-width: 768px) {
  body {
    flex-direction: column;
    height: auto;
    min-height: 100vh;
  }

  .sidebar {
    flex-basis: auto;
    max-height: 50vh;
  }

  #map {
    height: 50vh;
  }

  .workouts {
    max-height: 30vh;
  }
}