/* ============================================
   IPTV M3U Generator - Main Stylesheet
   Dark / Light / Auto mode
   ============================================ */

/* ---------- Dark Theme (default) ---------- */
:root,
.iptv-m3u-tool[data-mode="dark"] {
  --iptv-bg: #0e0e12;
  --iptv-surface: #18181c;
  --iptv-card: #1e1e24;
  --iptv-card-hover: #25252d;
  --iptv-border: #2a2a35;
  --iptv-border-light: #3a3a48;
  --iptv-text: #e8e8ed;
  --iptv-text-secondary: #9494a8;
  --iptv-text-muted: #6b6b80;
  --iptv-accent: #c0392b;
  --iptv-accent-hover: #e74c3c;
  --iptv-accent-glow: rgba(192, 57, 43, 0.25);
  --iptv-success: #22c55e;
  --iptv-error: #ef4444;
  --iptv-error-bg: rgba(239, 68, 68, 0.12);
  --iptv-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* ---------- Light Theme ---------- */
.iptv-m3u-tool[data-mode="light"] {
  --iptv-bg: #f5f5f7;
  --iptv-surface: #ffffff;
  --iptv-card: #ffffff;
  --iptv-card-hover: #fafafa;
  --iptv-border: #e0e0e6;
  --iptv-border-light: #d0d0da;
  --iptv-text: #1c1c1e;
  --iptv-text-secondary: #6b6b80;
  --iptv-text-muted: #9e9eb0;
  --iptv-accent: #c0392b;
  --iptv-accent-hover: #a93226;
  --iptv-accent-glow: rgba(192, 57, 43, 0.15);
  --iptv-success: #16a34a;
  --iptv-error: #dc2626;
  --iptv-error-bg: rgba(220, 38, 38, 0.08);
  --iptv-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

/* ---------- Auto: follow system preference ---------- */
@media (prefers-color-scheme: light) {
  .iptv-m3u-tool[data-mode="auto"] {
    --iptv-bg: #f5f5f7;
    --iptv-surface: #ffffff;
    --iptv-card: #ffffff;
    --iptv-card-hover: #fafafa;
    --iptv-border: #e0e0e6;
    --iptv-border-light: #d0d0da;
    --iptv-text: #1c1c1e;
    --iptv-text-secondary: #6b6b80;
    --iptv-text-muted: #9e9eb0;
    --iptv-accent: #c0392b;
    --iptv-accent-hover: #a93226;
    --iptv-accent-glow: rgba(192, 57, 43, 0.15);
    --iptv-success: #16a34a;
    --iptv-error: #dc2626;
    --iptv-error-bg: rgba(220, 38, 38, 0.08);
    --iptv-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  }
}

/* ---------- Shared ---------- */
:root {
  --iptv-radius: 12px;
  --iptv-radius-sm: 8px;
  --iptv-radius-lg: 16px;
  --iptv-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --iptv-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Base & Reset ---------- */
.iptv-m3u-tool * {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.iptv-m3u-tool {
  font-family: var(--iptv-font);
  background: var(--iptv-bg);
  color: var(--iptv-text);
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px;
  line-height: 1.5;
  position: relative;
  border-radius: var(--iptv-radius-lg);
  font-size: 13px;
}

/* ---------- Tabs ---------- */
.iptv-m3u-tabs {
  margin-bottom: 0;
}

.iptv-m3u-tab-nav {
  display: flex;
  gap: 3px;
  background: var(--iptv-surface);
  border: 1px solid var(--iptv-border);
  border-radius: var(--iptv-radius);
  padding: 3px;
  margin-bottom: 16px;
}

.iptv-m3u-tab-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  border: none;
  border-radius: var(--iptv-radius-sm);
  background: transparent;
  color: var(--iptv-text-secondary);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--iptv-transition);
  font-family: inherit;
}

.iptv-m3u-tab-btn svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.iptv-m3u-tab-btn:hover {
  color: var(--iptv-text);
  background: color-mix(in srgb, var(--iptv-text) 6%, transparent);
}

.iptv-m3u-tab-btn.active {
  background: var(--iptv-card);
  color: var(--iptv-accent);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.iptv-m3u-tab-panel {
  display: none;
  animation: iptvFadeIn 0.3s ease;
}

.iptv-m3u-tab-panel.active {
  display: block;
}

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

/* ---------- Cards ---------- */
.iptv-m3u-card {
  background: var(--iptv-card);
  border: 1px solid var(--iptv-border);
  border-radius: var(--iptv-radius);
  padding: 20px;
  transition: border-color var(--iptv-transition);
}

.iptv-m3u-card-header {
  margin-bottom: 16px;
}

.iptv-m3u-card-header h3 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 2px;
}

.iptv-m3u-card-header p {
  color: var(--iptv-text-secondary);
  font-size: 12px;
}

/* ---------- Forms ---------- */
.iptv-m3u-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.iptv-m3u-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.iptv-m3u-field label {
  font-size: 10px;
  font-weight: 700;
  color: var(--iptv-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.iptv-m3u-field input {
  width: 100%;
  padding: 6px 10px;
  background: var(--iptv-surface);
  border: 1px solid var(--iptv-border);
  border-radius: 6px;
  color: var(--iptv-text);
  font-size: 12px;
  font-family: inherit;
  transition: all var(--iptv-transition);
  outline: none;
}

.iptv-m3u-field input::placeholder {
  color: var(--iptv-text-muted);
}

.iptv-m3u-field input:focus {
  border-color: var(--iptv-accent);
  box-shadow: 0 0 0 3px var(--iptv-accent-glow);
}

.iptv-m3u-field input.error {
  border-color: var(--iptv-error);
  box-shadow: 0 0 0 3px var(--iptv-error-bg);
}

.iptv-m3u-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

/* ---------- Buttons ---------- */
.iptv-m3u-actions {
  display: flex;
  gap: 8px;
  margin-top: 4px;
}

.iptv-m3u-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 18px;
  border: none;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--iptv-transition);
  white-space: nowrap;
}

.iptv-m3u-btn-primary {
  background: var(--iptv-accent);
  color: #fff;
  flex: 1;
}

.iptv-m3u-btn-primary:hover {
  background: var(--iptv-accent-hover);
  box-shadow: 0 4px 16px var(--iptv-accent-glow);
  transform: translateY(-1px);
}

.iptv-m3u-btn-primary:active {
  transform: translateY(0);
}

.iptv-m3u-btn-ghost {
  background: transparent;
  color: var(--iptv-text-secondary);
  border: 1px solid var(--iptv-border);
}

.iptv-m3u-btn-ghost:hover {
  color: var(--iptv-text);
  border-color: var(--iptv-border-light);
  background: color-mix(in srgb, var(--iptv-text) 4%, transparent);
}

/* ---------- Copy Row ---------- */
.iptv-m3u-copy-row {
  display: flex;
  gap: 6px;
}

.iptv-m3u-copy-row input {
  flex: 1;
  padding: 7px 10px;
  background: var(--iptv-surface);
  border: 1px solid var(--iptv-border);
  border-radius: 6px;
  color: var(--iptv-text);
  font-size: 11px;
  font-family: 'Courier New', monospace;
  outline: none;
  cursor: default;
}

.iptv-m3u-copy-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  min-width: 32px;
  height: 32px;
  padding: 0;
  background: var(--iptv-card);
  border: 1px solid var(--iptv-border);
  border-radius: 6px;
  color: var(--iptv-text-secondary);
  cursor: pointer;
  transition: all var(--iptv-transition);
}

.iptv-m3u-copy-btn svg {
  width: 13px;
  height: 13px;
}

.iptv-m3u-copy-btn:hover {
  background: var(--iptv-accent);
  border-color: var(--iptv-accent);
  color: #fff;
}

.iptv-m3u-copy-btn.copied {
  background: var(--iptv-success);
  border-color: var(--iptv-success);
  color: #fff;
}

/* ---------- Results ---------- */
.iptv-m3u-result {
  margin-top: 14px;
  background: var(--iptv-card);
  border: 1px solid var(--iptv-border);
  border-radius: var(--iptv-radius);
  padding: 16px;
  animation: iptvSlideUp 0.35s ease;
}

.iptv-m3u-result-header {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--iptv-success);
  font-weight: 600;
  font-size: 12px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--iptv-border);
}

.iptv-m3u-result-header svg {
  width: 16px;
  height: 16px;
}

.iptv-m3u-result-field {
  margin-bottom: 10px;
}

.iptv-m3u-result-field:last-child {
  margin-bottom: 0;
}

.iptv-m3u-result-field label {
  display: block;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--iptv-text-secondary);
  margin-bottom: 4px;
}

.iptv-m3u-result-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* ---------- Toast ---------- */
.iptv-m3u-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  padding: 8px 18px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--iptv-text);
  background: var(--iptv-card);
  border: 1px solid var(--iptv-border);
  box-shadow: var(--iptv-shadow);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 99999;
  white-space: nowrap;
}

.iptv-m3u-toast.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.iptv-m3u-toast.success {
  border-color: var(--iptv-success);
  color: var(--iptv-success);
}

.iptv-m3u-toast.error {
  border-color: var(--iptv-error);
  color: var(--iptv-error);
}

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  .iptv-m3u-tool {
    padding: 14px 10px;
  }

  .iptv-m3u-card {
    padding: 14px 12px;
  }

  .iptv-m3u-row {
    grid-template-columns: 1fr;
  }

  .iptv-m3u-actions {
    flex-direction: column;
  }

  .iptv-m3u-tab-btn {
    padding: 7px 10px;
    font-size: 11px;
  }

  .iptv-m3u-tab-btn svg {
    width: 12px;
    height: 12px;
  }

  .iptv-m3u-toast {
    white-space: normal;
    max-width: 90vw;
    text-align: center;
  }
}

/* ---------- Status Checker ---------- */
.iptv-m3u-loading {
  text-align: center;
  padding: 28px 16px;
  color: var(--iptv-text-secondary);
  font-size: 12px;
}

.iptv-m3u-spinner {
  width: 28px;
  height: 28px;
  border: 2.5px solid var(--iptv-border);
  border-top-color: var(--iptv-accent);
  border-radius: 50%;
  animation: iptvSpin 0.7s linear infinite;
  margin: 0 auto 8px;
}

@keyframes iptvSpin {
  to { transform: rotate(360deg); }
}

.iptv-m3u-check-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--iptv-radius);
  margin-bottom: 14px;
}

.iptv-m3u-check-banner.status-ok {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.iptv-m3u-check-banner.status-bad {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.iptv-m3u-check-banner-icon {
  flex-shrink: 0;
  line-height: 0;
}

.iptv-m3u-check-banner-icon svg {
  width: 24px;
  height: 24px;
}

.status-ok .iptv-m3u-check-banner-icon { color: var(--iptv-success); }
.status-bad .iptv-m3u-check-banner-icon { color: var(--iptv-error); }

.iptv-m3u-check-banner-text strong {
  display: block;
  font-size: 13px;
  margin-bottom: 1px;
}

.status-ok .iptv-m3u-check-banner-text strong { color: var(--iptv-success); }
.status-bad .iptv-m3u-check-banner-text strong { color: var(--iptv-error); }

.iptv-m3u-check-banner-text span {
  font-size: 11px;
  color: var(--iptv-text-secondary);
}

.iptv-m3u-check-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--iptv-border);
  border: 1px solid var(--iptv-border);
  border-radius: var(--iptv-radius);
  overflow: hidden;
}

.iptv-m3u-check-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 10px 14px;
  background: var(--iptv-card);
}

.iptv-m3u-check-label {
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--iptv-text-muted);
}

.iptv-m3u-check-value {
  font-size: 12px;
  font-weight: 600;
  color: var(--iptv-text);
  word-break: break-all;
}

.iptv-m3u-check-value.text-ok { color: var(--iptv-success); }
.iptv-m3u-check-value.text-bad { color: var(--iptv-error); }
.iptv-m3u-check-value.text-warn { color: #f59e0b; }

.iptv-m3u-check-results {
  margin-top: 20px;
  animation: iptvSlideUp 0.35s ease;
}

@media (max-width: 640px) {
  .iptv-m3u-check-grid {
    grid-template-columns: 1fr;
  }
}