/* ============================================================
   ACTIVA 90 — Components
   Reusable UI elements
   ============================================================ */

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display:         inline-flex;
  align-items:     center;
  justify-content: center;
  gap:             var(--space-2);
  padding:         var(--space-3) var(--space-6);
  font-family:     var(--font-family);
  font-size:       var(--font-size-sm);
  font-weight:     var(--font-weight-semibold);
  line-height:     1;
  letter-spacing:  0.04em;
  text-transform:  uppercase;
  border:          2px solid transparent;
  border-radius:   var(--radius-md);
  cursor:          pointer;
  text-decoration: none;
  white-space:     nowrap;
  transition:      background-color var(--transition-fast),
                   color var(--transition-fast),
                   border-color var(--transition-fast),
                   box-shadow var(--transition-fast),
                   transform var(--transition-fast);
  user-select:     none;
}

.btn:hover   { transform: translateY(-1px); }
.btn:active  { transform: translateY(0); }
.btn:disabled {
  opacity: 0.45;
  cursor:  not-allowed;
  transform: none;
  box-shadow: none;
}

/* Sizes */
.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--font-size-xs); }
.btn-lg { padding: var(--space-4) var(--space-8); font-size: var(--font-size-base); }
.btn-xl { padding: var(--space-5) var(--space-10); font-size: var(--font-size-md); border-radius: var(--radius-lg); }
.btn-full { width: 100%; }

/* Variants */
.btn-primary {
  background-color: var(--color-primary);
  color:            var(--color-white);
  border-color:     var(--color-primary);
}
.btn-primary:hover {
  background-color: var(--color-primary-hover);
  border-color:     var(--color-primary-hover);
  box-shadow:       var(--shadow-primary);
  color:            var(--color-white);
}

.btn-outline {
  background-color: transparent;
  color:            var(--color-primary);
  border-color:     var(--color-primary);
}
.btn-outline:hover {
  background-color: var(--color-primary-light);
  color:            var(--color-primary-dark);
}

.btn-ghost {
  background-color: transparent;
  color:            var(--color-text-muted);
  border-color:     transparent;
}
.btn-ghost:hover {
  background-color: var(--color-border-light);
  color:            var(--color-text);
}

.btn-success {
  background-color: var(--color-success);
  color:            var(--color-white);
  border-color:     var(--color-success);
}
.btn-success:hover {
  background-color: #155f31;
  color:            var(--color-white);
}
.btn-success.done {
  background-color: var(--color-success-bg);
  color:            var(--color-success);
  border-color:     var(--color-success-border);
  cursor:           default;
  transform:        none;
}

.btn-danger {
  background-color: transparent;
  color:            var(--color-error);
  border-color:     var(--color-error);
}
.btn-danger:hover { background-color: var(--color-error-bg); }

/* ── Cards ───────────────────────────────────────────────────── */
.card {
  background-color: var(--color-surface);
  border:           1px solid var(--color-border);
  border-radius:    var(--radius-xl);
  padding:          var(--space-6);
  box-shadow:       var(--shadow-sm);
  transition:       box-shadow var(--transition-normal),
                    transform var(--transition-normal),
                    border-color var(--transition-normal),
                    background-color 0.25s ease;
}

.card-hover:hover {
  box-shadow:    var(--shadow-md);
  transform:     translateY(-2px);
  border-color:  var(--color-primary);
  cursor:        pointer;
}

.card-header {
  display:         flex;
  align-items:     center;
  justify-content: space-between;
  margin-bottom:   var(--space-4);
}

/* ── Badges ──────────────────────────────────────────────────── */
.badge {
  display:         inline-flex;
  align-items:     center;
  gap:             var(--space-1);
  padding:         var(--space-1) var(--space-3);
  font-size:       var(--font-size-xs);
  font-weight:     var(--font-weight-semibold);
  letter-spacing:  0.05em;
  text-transform:  uppercase;
  border-radius:   var(--radius-full);
  white-space:     nowrap;
}

.badge-primary {
  background-color: var(--color-primary);
  color:            var(--color-white);
}
.badge-outline {
  background-color: transparent;
  color:            var(--color-primary);
  border:           1px solid var(--color-primary);
}
.badge-success {
  background-color: var(--color-success-bg);
  color:            var(--color-success);
  border:           1px solid var(--color-success-border);
}
.badge-gray {
  background-color: var(--color-border-light);
  color:            var(--color-text-muted);
}
.badge-warning {
  background-color: var(--color-warning-bg);
  color:            var(--color-warning);
}

/* ── Tab System ──────────────────────────────────────────────── */
.tab-nav {
  display:          flex;
  align-items:      center;
  gap:              var(--space-1);
  border-bottom:    2px solid var(--color-border);
  padding-bottom:   0;
  margin-bottom:    var(--space-6);
  overflow-x:       auto;
  scrollbar-width:  none;
}
.tab-nav::-webkit-scrollbar { display: none; }

.tab-btn {
  display:          flex;
  align-items:      center;
  gap:              var(--space-2);
  padding:          var(--space-3) var(--space-5);
  font-family:      var(--font-family);
  font-size:        var(--font-size-sm);
  font-weight:      var(--font-weight-semibold);
  color:            var(--color-text-muted);
  background:       transparent;
  border:           none;
  border-bottom:    3px solid transparent;
  margin-bottom:    -2px;
  cursor:           pointer;
  white-space:      nowrap;
  transition:       color var(--transition-fast),
                    border-color var(--transition-fast);
  letter-spacing:   0.03em;
}
.tab-btn:hover { color: var(--color-text); }
.tab-btn.active {
  color:         var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Modal ───────────────────────────────────────────────────── */
.modal {
  position:        fixed;
  inset:           0;
  z-index:         var(--z-modal);
  display:         flex;
  align-items:     center;
  justify-content: center;
  padding:         var(--space-4);
}

.modal[hidden] { display: none; }

.modal__backdrop {
  position:         absolute;
  inset:            0;
  background-color: rgba(13, 13, 13, 0.6);
  backdrop-filter:  blur(4px);
  cursor:           pointer;
}

.modal__panel {
  position:         relative;
  z-index:          1;
  background-color: var(--color-surface);
  border-radius:    var(--radius-xl);
  box-shadow:       var(--shadow-xl);
  width:            100%;
  max-width:        480px;
  max-height:       90vh;
  overflow:         hidden;
  display:          flex;
  flex-direction:   column;
  animation:        modal-in 0.2s ease;
  transition:       background-color 0.25s ease;
}

.modal__panel--large {
  max-width:   900px;
  height:      90vh;
}

.modal__panel--xlarge {
  max-width:   1100px;
  height:      92vh;
}

@keyframes modal-in {
  from { opacity: 0; transform: scale(0.96) translateY(8px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

.modal__header {
  display:         flex;
  align-items:     center;
  justify-content: space-between;
  padding:         var(--space-6);
  border-bottom:   1px solid var(--color-border);
  flex-shrink:     0;
}

.modal__header h2 {
  font-size:   var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color:       var(--color-text);
}

.modal__close {
  display:          flex;
  align-items:      center;
  justify-content:  center;
  width:            32px;
  height:           32px;
  border:           none;
  background:       var(--color-border-light);
  border-radius:    var(--radius-full);
  font-size:        1.2rem;
  color:            var(--color-text-muted);
  cursor:           pointer;
  transition:       background-color var(--transition-fast),
                    color var(--transition-fast);
  flex-shrink:      0;
}
.modal__close:hover {
  background-color: var(--color-border);
  color:            var(--color-text);
}

.modal__body {
  flex:         1;
  overflow-y:   auto;
  padding:      var(--space-6);
}

.modal__footer {
  display:         flex;
  gap:             var(--space-3);
  justify-content: flex-end;
  padding:         var(--space-5) var(--space-6);
  border-top:      1px solid var(--color-border);
  flex-shrink:     0;
}

/* ── Toast Notification ──────────────────────────────────────── */
.toast-container {
  position:   fixed;
  bottom:     var(--space-6);
  right:      var(--space-6);
  z-index:    var(--z-toast);
  display:    flex;
  flex-direction: column;
  gap:        var(--space-3);
  pointer-events: none;
}

.toast {
  display:          flex;
  align-items:      center;
  gap:              var(--space-3);
  padding:          var(--space-4) var(--space-5);
  background-color: var(--color-black);
  color:            var(--color-white);
  border-radius:    var(--radius-lg);
  box-shadow:       var(--shadow-lg);
  font-size:        var(--font-size-sm);
  font-weight:      var(--font-weight-medium);
  min-width:        280px;
  max-width:        400px;
  animation:        toast-in 0.25s ease, toast-out 0.25s ease 3s forwards;
  pointer-events:   auto;
}

.toast-success { border-left: 4px solid var(--color-success); }
.toast-error   { border-left: 4px solid var(--color-error); }
.toast-info    { border-left: 4px solid var(--color-primary); }

@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes toast-out {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(20px); }
}

/* ── Progress Ring ───────────────────────────────────────────── */
.progress-ring-wrap {
  position:    relative;
  width:       120px;
  height:      120px;
  flex-shrink: 0;
}

.progress-ring {
  transform:        rotate(-90deg);
  transform-origin: center;
}

.progress-ring__track {
  fill:         none;
  stroke:       var(--color-border);
  stroke-width: 8;
}

.progress-ring__fill {
  fill:             none;
  stroke:           var(--color-primary);
  stroke-width:     8;
  stroke-linecap:   round;
  transition:       stroke-dashoffset 1.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.progress-ring__label {
  position:    absolute;
  inset:       0;
  display:     flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap:         2px;
}

.progress-ring__percent {
  font-size:   var(--font-size-xl);
  font-weight: var(--font-weight-black);
  color:       #ffffff;
  line-height: 1;
}

.progress-ring__text {
  font-size:   var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color:       #ffffff;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Form Inputs ─────────────────────────────────────────────── */
.form-group {
  display:        flex;
  flex-direction: column;
  gap:            var(--space-2);
}

.form-label {
  font-size:   var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color:       var(--color-text);
}

.form-input {
  padding:          var(--space-3) var(--space-4);
  border:           1.5px solid var(--color-border);
  border-radius:    var(--radius-md);
  font-family:      var(--font-family);
  font-size:        var(--font-size-base);
  color:            var(--color-text);
  background-color: var(--color-surface);
  transition:       border-color var(--transition-fast),
                    box-shadow var(--transition-fast),
                    background-color 0.25s ease,
                    color 0.25s ease;
  width:            100%;
}

.form-input:focus {
  outline:      none;
  border-color: var(--color-primary);
  box-shadow:   0 0 0 3px var(--color-primary-muted);
}

.form-input::placeholder { color: var(--color-text-subtle); }

.form-error {
  font-size:   var(--font-size-sm);
  color:       var(--color-error);
  font-weight: var(--font-weight-medium);
}

/* ── Loading Skeleton ────────────────────────────────────────── */
@keyframes shimmer {
  0%   { background-position: -800px 0; }
  100% { background-position: 800px 0; }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-border-light) 25%,
    var(--color-border) 50%,
    var(--color-border-light) 75%
  );
  background-size: 800px 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

.skeleton-text {
  height:        1em;
  margin-bottom: var(--space-3);
}

.skeleton-text--sm { height: 0.75em; width: 60%; }
.skeleton-text--lg { height: 1.5em; width: 80%; }

/* ── Divider ─────────────────────────────────────────────────── */
.divider {
  border:     none;
  border-top: 1px solid var(--color-border);
  margin:     var(--space-6) 0;
}

/* ── Empty State ─────────────────────────────────────────────── */
.empty-state {
  display:        flex;
  flex-direction: column;
  align-items:    center;
  text-align:     center;
  padding:        var(--space-16) var(--space-8);
  gap:            var(--space-4);
  color:          var(--color-text-muted);
}

.empty-state__icon {
  font-size: 3rem;
  line-height: 1;
}

.empty-state__title {
  font-size:   var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color:       var(--color-text);
}

/* ── Theme Toggle ───────────────────────────────────────────── */
.theme-toggle {
  display:          flex;
  align-items:      center;
  justify-content:  center;
  width:            40px;
  height:           40px;
  padding:          0;
  border:           none;
  border-radius:    var(--radius-full);
  background:       var(--color-border-light);
  cursor:           pointer;
  transition:       background-color var(--transition-fast),
                    transform var(--transition-fast);
  flex-shrink:      0;
}

.theme-toggle:hover {
  background:  var(--color-border);
  transform:   scale(1.05);
}

.theme-toggle:active {
  transform:   scale(0.95);
}

.theme-toggle__icon {
  width:       20px;
  height:      20px;
  fill:        none;
  stroke:      var(--color-text);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition:  stroke var(--transition-fast);
}

/* Hide/show icons based on theme */
.theme-toggle__sun { display: none; }
.theme-toggle__moon { display: block; }

[data-theme="dark"] .theme-toggle__sun { display: block; }
[data-theme="dark"] .theme-toggle__moon { display: none; }