/* ── TOKENS ── */
:root {
  --ink: #0c0c0c;
  --yellow: #d4ff00;
  --white: #f7f6f1;
  --muted: #888880;
  --border: #2a2a2a;
  --green: #00c875;
  --red: #ff3b3b;
  --amber: #f59e0b;
  --blue: #3b82f6;
  --purple: #a855f7;
  --add-bg: rgba(0, 200, 117, 0.15);
  --add-text: #00c875;
  --del-bg: rgba(255, 59, 59, 0.15);
  --del-text: #ff3b3b;
  --change-bg: rgba(245, 158, 11, 0.15);
  --change-text: #f59e0b;
  --mono: "Fragment Mono", monospace;
  --sans: "Barlow", sans-serif;
  --cond: "Barlow Condensed", sans-serif;
  --active: #d4ff00;
}

/* ── APP FULLSCREEN CONTAINER ── */

/* ── PAGE HEADER ── */

/* ── PAGE HEADER ── */
.page-header {
  display: grid;
  grid-template-columns: 1fr 280px;
  border-bottom: 1px solid var(--border);
  background: #0a0a0a;
}
.ph-left {
  padding: 44px 52px 36px;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}
.ph-left::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 3px,
    rgba(255, 255, 255, 0.012) 3px,
    rgba(255, 255, 255, 0.012) 4px
  );
}
.ph-eyebrow {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.ph-eyebrow .dot {
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  animation: blink 1.8s step-end infinite;
}
@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}
.ph-title {
  font-family: var(--cond);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-bottom: 18px;
}
.ph-title .yel {
  color: var(--yellow);
}
.ph-desc {
  font-size: 0.95rem;
  color: var(--muted);
  max-width: 500px;
  line-height: 1.65;
  border-left: 3px solid var(--yellow);
  padding-left: 14px;
  margin-bottom: 20px;
}
.ph-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.ph-tag {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--border);
  color: var(--muted);
}
.ph-tag.yellow {
  border-color: var(--yellow);
  color: var(--yellow);
}
.ph-tag.green {
  border-color: var(--green);
  color: var(--green);
}
.ph-right {
  display: flex;
  flex-direction: column;
}
.ph-stat {
  flex: 1;
  padding: 22px 28px;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.ph-stat:last-child {
  border-bottom: none;
}
.ps-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.ps-val {
  font-family: var(--cond);
  font-size: 2rem;
  font-weight: 900;
  color: var(--yellow);
  line-height: 1;
  letter-spacing: -0.02em;
}
.ps-note {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--muted);
}

/* ── MAIN LAYOUT ── */
.page-body {
  display: grid;
  grid-template-columns: 1fr 300px;
}
.col-main {
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
}
.col-side {
  background: #080808;
  display: flex;
  flex-direction: column;
}

/* ── APP FULLSCREEN CONTAINER ── */
.diff-app {
  display: flex;
  flex-direction: column;
}
.diff-app.is-fullscreen {
  position: fixed !important;
  inset: 0 !important;
  width: 100vw !important;
  height: 100vh !important;
  z-index: 9999 !important;
  background: #0a0a0a !important;
  display: flex !important;
  flex-direction: column !important;
  margin: 0 !important;
  padding: 0 !important;
}
.diff-app.is-fullscreen .tool-panel {
  flex: 0 0 auto !important;
  border-bottom: 1px solid var(--border) !important;
}
.diff-app.is-fullscreen .input-grid {
  min-height: auto !important;
  height: clamp(100px, 20vh, 200px) !important; /* Better responsiveness */
}
.diff-app.is-fullscreen .text-input {
  font-size: 0.75rem !important;
}
.diff-app.is-fullscreen .diff-section {
  flex: 1 !important;
  display: flex !important;
  flex-direction: column !important;
  min-height: 0 !important;
  border-bottom: none !important;
  overflow: hidden !important;
}
.diff-app.is-fullscreen .diff-view {
  flex: 1 !important;
  min-height: 0 !important;
  overflow: auto !important;
  background: #0c0c0c !important;
}
.diff-app.is-fullscreen .stats-bar {
  flex: 0 0 auto !important;
  background: #0d0d0d !important;
}

/* ── TOOL PANEL ── */
.tool-panel {
  border-bottom: 1px solid var(--border);
}
.tph {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--border);
  background: #0a0a0a;
  height: 46px;
}
.tph-title {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  flex: 1;
  border-right: 1px solid var(--border);
}
.tph-status {
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  animation: blink 1.8s step-end infinite;
}
.tph-status-txt {
  color: var(--green);
  font-size: 0.65rem;
}
.tph-actions {
  display: flex;
  align-items: stretch;
}
.tph-btn {
  height: 46px;
  padding: 0 16px;
  border-right: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 6px;
  transition:
    color 0.12s,
    background 0.12s;
}
.tph-btn:hover {
  color: var(--white);
  background: #111;
}
.tph-btn.active {
  color: var(--yellow);
  background: #111;
}
.tph-btn:last-child {
  border-right: none;
}

/* ── OPTIONS BAR ── */
.options-bar {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--border);
  background: #0d0d0d;
  flex-wrap: wrap;
}
.opt-group {
  display: flex;
  align-items: stretch;
  border-right: 1px solid var(--border);
}
.opt-group:last-child {
  border-right: none;
}
.opt-btn {
  height: 40px;
  padding: 0 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.04em;
  transition: all 0.12s;
}
.opt-btn:hover {
  color: var(--white);
  background: #161616;
}
.opt-btn.active {
  color: var(--yellow);
  background: #161616;
}
.opt-check {
  width: 14px;
  height: 14px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  transition: all 0.12s;
}
.opt-btn.active .opt-check {
  border-color: var(--yellow);
  background: var(--yellow);
  color: var(--ink);
}
.opt-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--muted);
  padding: 0 14px;
  display: flex;
  align-items: center;
  letter-spacing: 0.06em;
}

/* ── INPUT AREAS ── */
.input-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 320px;
}
.input-pane {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
}
.input-pane:last-child {
  border-right: none;
}
.pane-header {
  height: 40px;
  padding: 0 16px;
  background: #0a0a0a;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.ph-badge {
  font-size: 0.6rem;
  padding: 2px 8px;
  border: 1px solid var(--border);
  color: var(--muted);
}
.ph-badge.original {
  border-color: var(--del-text);
  color: var(--del-text);
}
.ph-badge.modified {
  border-color: var(--add-text);
  color: var(--add-text);
}
.pane-actions {
  display: flex;
  gap: 0;
}
.pane-btn {
  padding: 0 10px;
  height: 100%;
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.12s;
}
.pane-btn:hover {
  color: var(--yellow);
}
.pane-btn.ok {
  color: var(--green);
}

.text-input {
  flex: 1;
  width: 100%;
  padding: 16px;
  resize: none;
  background: #0c0c0c;
  border: none;
  outline: none;
  color: var(--white);
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.7;
  letter-spacing: 0.02em;
}
.text-input::placeholder {
  color: var(--muted);
  opacity: 0.5;
}

/* ── COMPARE BUTTON ── */
.compare-row {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--border);
  background: #0a0a0a;
}
.compare-btn {
  flex: 1;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--cond);
  font-size: 1.1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink);
  background: var(--yellow);
  transition: all 0.12s;
}
.compare-btn:hover {
  background: var(--white);
}
.compare-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.swap-btn {
  width: 52px;
  border-left: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--muted);
  transition: all 0.12s;
}
.swap-btn:hover {
  color: var(--yellow);
  background: #111;
}

/* ── STATS BAR ── */
.stats-bar {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--border);
  background: #0a0a0a;
  height: 42px;
}
.stat-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 16px;
  border-right: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.stat-item .sv {
  color: var(--white);
  font-weight: 500;
}
.stat-item.added .sv {
  color: var(--green);
}
.stat-item.removed .sv {
  color: var(--red);
}
.stat-item.changed .sv {
  color: var(--amber);
}
.stat-item:last-child {
  border-right: none;
}
.stat-icon {
  font-size: 0.8rem;
}

/* ── DIFF OUTPUT ── */
.diff-section {
  border-bottom: 1px solid var(--border);
}
.section-bar {
  display: flex;
  align-items: center;
  height: 44px;
  border-bottom: 1px solid var(--border);
  background: #0a0a0a;
}
.sb-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0 16px;
  border-right: 1px solid var(--border);
  height: 100%;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sb-dot {
  width: 6px;
  height: 6px;
  background: var(--yellow);
  border-radius: 50%;
  animation: blink 1.4s step-end infinite;
}
.sb-title {
  font-family: var(--cond);
  font-size: 1rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--white);
  padding: 0 20px;
}
.sb-actions {
  margin-left: auto;
  display: flex;
  align-items: stretch;
  height: 100%;
}
.sb-btn {
  padding: 0 16px;
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-left: 1px solid var(--border);
  transition: all 0.12s;
}
.sb-btn:hover {
  color: var(--yellow);
  background: #111;
}
.sb-btn.ok {
  color: var(--green);
}

/* ── DIFF VIEW ── */
.diff-view {
  background: #0c0c0c;
  min-height: 200px;
  overflow: auto;
}
.diff-empty {
  padding: 40px;
  text-align: center;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.85rem;
}
.diff-empty-icon {
  font-size: 2rem;
  margin-bottom: 12px;
  opacity: 0.4;
}

/* Side by side view */
.diff-side {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.diff-pane {
  border-right: 1px solid var(--border);
  overflow: auto;
}
.diff-pane:last-child {
  border-right: none;
}
.diff-pane-header {
  position: sticky;
  top: 0;
  padding: 8px 16px;
  background: #0d0d0d;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  z-index: 1;
}
.diff-lines {
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.8;
}

/* Line styles */
.diff-line {
  display: flex;
  border-bottom: 1px solid rgba(42, 42, 42, 0.5);
}
.diff-line:last-child {
  border-bottom: none;
}
.diff-ln {
  width: 44px;
  padding: 0 8px;
  text-align: right;
  color: var(--muted);
  background: #0a0a0a;
  border-right: 1px solid var(--border);
  flex-shrink: 0;
  user-select: none;
  font-size: 0.7rem;
}
.diff-code {
  flex: 1;
  padding: 0 12px;
  white-space: pre-wrap;
  word-break: break-all;
}

.diff-line.added {
  background: var(--add-bg);
}
.diff-line.added .diff-ln {
  background: rgba(0, 200, 117, 0.1);
  color: var(--add-text);
}
.diff-line.added .diff-code {
  color: var(--add-text);
}

.diff-line.removed {
  background: var(--del-bg);
}
.diff-line.removed .diff-ln {
  background: rgba(255, 59, 59, 0.1);
  color: var(--del-text);
}
.diff-line.removed .diff-code {
  color: var(--del-text);
}

.diff-line.changed {
  background: var(--change-bg);
}
.diff-line.changed .diff-ln {
  background: rgba(245, 158, 11, 0.1);
  color: var(--change-text);
}

.diff-line.empty {
  background: #080808;
}
.diff-line.empty .diff-code {
  color: var(--border);
}

/* Inline view */
.diff-inline {
  padding: 0;
}
.diff-inline .diff-line {
  padding: 0;
}
.diff-inline .diff-ln {
  width: 36px;
}
.diff-inline .diff-ln-old {
  border-right: none;
}
.diff-inline .diff-prefix {
  width: 24px;
  text-align: center;
  flex-shrink: 0;
  font-weight: 700;
  color: var(--muted);
}
.diff-inline .diff-line.added .diff-prefix {
  color: var(--add-text);
}
.diff-inline .diff-line.removed .diff-prefix {
  color: var(--del-text);
}

/* Character highlights */
.char-add {
  background: rgba(0, 200, 117, 0.35);
  color: var(--add-text);
  padding: 0 1px;
}
.char-del {
  background: rgba(255, 59, 59, 0.35);
  color: var(--del-text);
  padding: 0 1px;
  text-decoration: line-through;
}

/* ── LEGEND ── */
.legend-bar {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 0;
  border-bottom: 1px solid var(--border);
  background: #0a0a0a;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-right: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.7rem;
}
.legend-item:last-child {
  border-right: none;
}
.legend-color {
  width: 12px;
  height: 12px;
}
.legend-color.added {
  background: var(--add-bg);
  border: 1px solid var(--add-text);
}
.legend-color.removed {
  background: var(--del-bg);
  border: 1px solid var(--del-text);
}
.legend-color.unchanged {
  background: #0c0c0c;
  border: 1px solid var(--border);
}
.legend-text {
  color: var(--muted);
}

/* ── HOW TO / FAQ ── */
.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.step {
  display: grid;
  grid-template-columns: 64px 1fr;
  border-bottom: 1px solid var(--border);
  transition: background 0.12s;
}
.step:hover {
  background: #0d0d0d;
}
.step:last-child {
  border-bottom: none;
}
.step-num {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 22px;
  border-right: 1px solid var(--border);
  font-family: var(--cond);
  font-size: 2rem;
  font-weight: 900;
  color: var(--border);
  letter-spacing: -0.04em;
  transition: color 0.15s;
}
.step:hover .step-num {
  color: var(--yellow);
}
.step-content {
  padding: 20px 24px;
}
.step-title {
  font-family: var(--cond);
  font-size: 1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--white);
  margin-bottom: 6px;
}
.step-desc {
  font-size: 0.84rem;
  color: var(--muted);
  line-height: 1.6;
}
.code {
  font-family: var(--mono);
  font-size: 0.75rem;
  background: #161616;
  border: 1px solid var(--border);
  padding: 1px 6px;
  color: var(--yellow);
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:last-child {
  border-bottom: none;
}
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 28px;
  text-align: left;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--white);
  transition:
    background 0.12s,
    color 0.12s;
}
.faq-q:hover {
  background: #0d0d0d;
  color: var(--yellow);
}
.faq-q[aria-expanded="true"] {
  background: #0d0d0d;
  color: var(--yellow);
}
.faq-icon {
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--muted);
  flex-shrink: 0;
  transition:
    transform 0.2s,
    color 0.12s;
}
.faq-q[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
  color: var(--yellow);
}
.faq-a {
  display: none;
  padding: 0 28px 18px;
  font-size: 0.84rem;
  color: var(--muted);
  line-height: 1.7;
  background: #0a0a0a;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.faq-a.open {
  display: block;
}

/* ── SIDEBAR ── */
.side-block {
  border-bottom: 1px solid var(--border);
}
.side-hd {
  height: 44px;
  padding: 0 20px;
  border-bottom: 1px solid var(--border);
  background: #0a0a0a;
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}
.meta-rows {
  display: flex;
  flex-direction: column;
}
.meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 11px 20px;
  border-bottom: 1px solid var(--border);
  transition: background 0.12s;
}
.meta-row:last-child {
  border-bottom: none;
}
.meta-row:hover {
  background: #0f0f0f;
}
.mk {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
}
.mv {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 6px;
}
.badge {
  font-size: 0.62rem;
  padding: 2px 7px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid;
}
.badge-green {
  border-color: var(--green);
  color: var(--green);
}
.badge-yellow {
  border-color: var(--yellow);
  color: var(--yellow);
}
.trust-rows {
  display: flex;
  flex-direction: column;
}
.trust-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--muted);
  transition:
    background 0.12s,
    color 0.12s;
}
.trust-row:last-child {
  border-bottom: none;
}
.trust-row:hover {
  background: #0f0f0f;
  color: var(--white);
}
.trust-sym {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--green);
  flex-shrink: 0;
  width: 16px;
  text-align: center;
}
.related-list {
  display: flex;
  flex-direction: column;
}
.rel-item {
  display: grid;
  grid-template-columns: 44px 1fr 24px;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  transition: background 0.12s;
}
.rel-item:last-child {
  border-bottom: none;
}
.rel-item:hover {
  background: #111;
}
.rel-icon {
  font-size: 1.2rem;
  text-align: center;
}
.rel-name {
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 2px;
  transition: color 0.12s;
}
.rel-item:hover .rel-name {
  color: var(--yellow);
}
.rel-cat {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.rel-arr {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--muted);
  text-align: right;
  transition:
    color 0.12s,
    transform 0.15s;
}
.rel-item:hover .rel-arr {
  color: var(--yellow);
  transform: translateX(3px);
}
.share-wrap {
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.share-row {
  display: flex;
  gap: 8px;
}
.share-btn {
  flex: 1;
  height: 36px;
  padding: 0 12px;
  border: 1px solid var(--border);
  background: transparent;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.12s;
}
.share-btn:hover {
  border-color: var(--yellow);
  color: var(--yellow);
}
.share-btn.ok {
  border-color: var(--green);
  color: var(--green);
}

/* ── RESPONSIVE ── */

/* ── RESPONSIVE ── */
@media (max-width: 1100px) {
  .page-body {
    grid-template-columns: 1fr;
  }
  .col-side {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }
  .side-block {
    border-right: 1px solid var(--border);
  }
  .side-block:nth-child(even) {
    border-right: none;
  }
}
@media (max-width: 900px) {
  .page-header {
    grid-template-columns: 1fr;
  }
  .ph-right {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--border);
  }
  .ph-stat {
    border-bottom: none;
    border-right: 1px solid var(--border);
  }
  .ph-stat:last-child {
    border-right: none;
  }
  .ph-left {
    padding: 28px 20px;
  }
  .input-grid {
    grid-template-columns: 1fr;
  }
  .input-pane {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .input-pane:last-child {
    border-bottom: none;
  }
  .diff-side {
    grid-template-columns: 1fr;
  }
  .diff-pane {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .diff-pane:last-child {
    border-bottom: none;
  }
  .col-side {
    grid-template-columns: 1fr;
  }
  .side-block {
    border-right: none;
  }
}
@media (max-width: 600px) {
  .ph-title {
    font-size: 2.8rem;
  }
  /* Nav crumb removed */
  .options-bar {
    overflow-x: auto;
  }
  .legend-bar {
    overflow-x: auto;
  }
}

/* Mobile Screens (Max 480px) */
@media (max-width: 480px) {
  .tph {
    height: auto;
    flex-wrap: wrap;
    padding: 10px 16px;
    gap: 10px;
  }
  .tph-actions {
    width: 100%;
    flex-wrap: wrap;
    border-top: 1px solid var(--border);
  }
  .tph-btn {
    flex: 1;
    border-right: none;
    border-left: 1px solid var(--border);
  }
  .tph-btn:first-child {
    border-left: none;
  }
}