/* ============================================================
   M3U-EDIT.COM v2 — Universal Upload Component Styles
   Location: assets/css/upload.css

   Reusable upload UI for ALL tools.
   Features: Drag-drop, progress bar, validation, error states,
             success animation, mobile-responsive.
   ============================================================ */

/* ============================================================
   CONTAINER
   ============================================================ */
.upload-component {
  position: relative;
  width: 100%;
}

/* ============================================================
   INPUT METHOD TABS
   ============================================================ */
.upload-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  margin-bottom: 16px;
}

.upload-tab {
  flex: 1;
  background: transparent;
  border: none;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--t-base);
  font-family: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
}
.upload-tab:hover { color: var(--text); }
.upload-tab.active {
  background: var(--bg-card);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.upload-tab-content { display: none; }
.upload-tab-content.active {
  display: block;
  animation: upload-fade-in 0.3s ease;
}
@keyframes upload-fade-in {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   DROP ZONE
   ============================================================ */
.upload-dropzone {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 36px 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--t-base);
  background: var(--bg-secondary);
  overflow: hidden;
}

.upload-dropzone:hover {
  border-color: var(--primary);
  background: rgba(var(--primary-rgb), 0.04);
}
.upload-dropzone.dragover {
  border-color: var(--primary);
  background: rgba(var(--primary-rgb), 0.08);
  transform: scale(1.01);
  box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.1);
}

.upload-dropzone input[type="file"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.upload-dropzone-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  margin-bottom: 14px;
  border-radius: 14px;
  background: rgba(var(--primary-rgb), 0.12);
  color: var(--primary);
  flex-shrink: 0;
}

.upload-dropzone-svg {
  display: block;
  width: 26px;
  height: 26px;
}

.upload-dropzone-icon .upload-dropzone-svg {
  animation: upload-icon-nudge 2.8s ease-in-out infinite;
}

@keyframes upload-icon-nudge {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}



.upload-dropzone-text {
  font-weight: 700;
  font-size: 17px;
  color: var(--text);
  margin-bottom: 6px;
}

.upload-dropzone-hint {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.upload-dropzone-hint strong {
  color: var(--text-secondary);
}

/* Browse button inside dropzone (alternative trigger) */
.upload-browse-btn {
  display: inline-block;
  margin-top: 14px;
  padding: 8px 18px;
  background: var(--bg-card);
  color: var(--primary);
  border: 1px solid var(--primary);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--t-fast);
}
.upload-browse-btn:hover {
  background: var(--primary);
  color: #fff;
}

/* ============================================================
   URL INPUT
   ============================================================ */
.upload-url-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.upload-url-row .form-input {
  flex: 1;
  min-width: 220px;
  padding: 13px 16px;
  font-size: 14px;
}
.upload-url-row .upload-url-btn {
  padding: 13px 22px;
  white-space: nowrap;
}

/* ============================================================
   PASTE TEXTAREA
   ============================================================ */
.upload-paste {
  width: 100%;
  min-height: 160px;
  padding: 14px;
  font-family: 'Monaco', 'Menlo', 'Courier New', monospace;
  font-size: 12px;
  line-height: 1.5;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  color: var(--text);
  resize: vertical;
  transition: border-color var(--t-fast);
}
.upload-paste:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.15);
}

/* ============================================================
   STATE: SELECTED FILE
   ============================================================ */
.upload-file-card {
  display: none;
  align-items: center;
  gap: 14px;
  padding: 16px;
  background: linear-gradient(135deg, rgba(var(--primary-rgb), 0.04), rgba(var(--accent-rgb), 0.04));
  border: 1px solid rgba(var(--primary-rgb), 0.2);
  border-radius: var(--radius);
  margin-top: 12px;
  animation: upload-slide-up 0.3s ease;
}
.upload-file-card.show { display: flex; }
@keyframes upload-slide-up {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.upload-file-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.25);
}

.upload-file-info {
  flex: 1;
  min-width: 0;
}

.upload-file-name {
  font-weight: 700;
  font-size: 14px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.upload-file-meta {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.upload-file-meta-pill {
  display: inline-block;
  padding: 1px 8px;
  background: var(--bg-card);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}

.upload-file-meta-pill.success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

.upload-file-remove {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 14px;
  flex-shrink: 0;
  transition: all var(--t-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}
.upload-file-remove:hover {
  border-color: var(--danger);
  color: var(--danger);
  background: rgba(239, 68, 68, 0.1);
}

/* ============================================================
   PROGRESS BAR
   ============================================================ */
.upload-progress {
  display: none;
  margin-top: 14px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  animation: upload-slide-up 0.3s ease;
}
.upload-progress.show { display: block; }

.upload-progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  font-size: 13px;
}

.upload-progress-label {
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.upload-progress-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: upload-spin 0.8s linear infinite;
}
@keyframes upload-spin {
  to { transform: rotate(360deg); }
}

.upload-progress-percent {
  font-weight: 700;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}

.upload-progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-secondary);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}

.upload-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 999px;
  transition: width 0.2s ease;
  position: relative;
  overflow: hidden;
}

/* Shimmer animation on the progress fill */
.upload-progress-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.3) 50%,
    transparent 100%);
  animation: upload-shimmer 1.5s infinite;
}
@keyframes upload-shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.upload-progress-meta {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
  font-variant-numeric: tabular-nums;
}

/* ============================================================
   STATE: SUCCESS
   ============================================================ */
.upload-success {
  display: none;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius);
  margin-top: 12px;
  animation: upload-slide-up 0.3s ease;
}
.upload-success.show { display: flex; }

.upload-success-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--success);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  font-weight: 700;
  animation: upload-pop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
@keyframes upload-pop {
  0% { transform: scale(0); }
  100% { transform: scale(1); }
}

.upload-success-text {
  flex: 1;
  font-size: 14px;
  font-weight: 600;
  color: var(--success);
}

.upload-success-text small {
  display: block;
  font-weight: 400;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ============================================================
   STATE: ERROR
   ============================================================ */
.upload-error {
  display: none;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius);
  margin-top: 12px;
  animation: upload-shake 0.4s ease;
}
.upload-error.show { display: flex; }
@keyframes upload-shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

.upload-error-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--danger);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  font-weight: 700;
}

.upload-error-text {
  flex: 1;
  font-size: 13px;
  color: var(--danger);
  font-weight: 600;
  line-height: 1.5;
}

.upload-error-text small {
  display: block;
  font-weight: 400;
  color: var(--text-secondary);
  margin-top: 2px;
}

.upload-error-close {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 18px;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  flex-shrink: 0;
  transition: color var(--t-fast);
}
.upload-error-close:hover { color: var(--danger); }

/* ============================================================
   FILE SIZE / LIMITS INFO
   ============================================================ */
.upload-limits {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 10px;
  font-size: 12px;
  color: var(--text-muted);
}
.upload-limits span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 600px) {
  .upload-dropzone { padding: 28px 16px; }
  .upload-dropzone-icon { width: 48px; height: 48px; }
  .upload-dropzone-svg { width: 24px; height: 24px; }
  .upload-dropzone-text { font-size: 15px; }
  .upload-tabs { padding: 3px; }
  .upload-tab { padding: 9px 8px; font-size: 12px; }
  .upload-file-card { gap: 10px; padding: 12px; }
  .upload-file-icon { width: 40px; height: 40px; font-size: 18px; }
}