:root {
  --orange: #ff7a00;
  --teal: #0bbfa5;
  --blue: #5c7cff;
  --radius: 14px;
}

[data-theme="dark"] {
  --bg: #0f172a;
  --bg-2: #0b1224;
  --card: #121d35;
  --panel: #0d152a;
  --border: #1b2845;
  --text: #e9edf7;
  --muted: #8aa0c3;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  --bg-glow1: rgba(255, 122, 0, 0.08);
  --bg-glow2: rgba(11, 191, 165, 0.12);
  --bg-grad1: #0c1326;
  --bg-grad2: #0f172a;
  --bg-grad3: #0a0f1f;
  --layer-soft: rgba(255, 255, 255, 0.04);
  --layer-strong: rgba(255, 255, 255, 0.06);
  --progress-bg: rgba(255, 255, 255, 0.05);
  --chip-border: rgba(255, 255, 255, 0.15);
  --pill-border: rgba(255, 255, 255, 0.15);
}

[data-theme="light"] {
  --bg: #f7f9fd;
  --bg-2: #eef2fb;
  --card: #ffffff;
  --panel: #ffffff;
  --border: #cbd6ea;
  --text: #0d172f;
  --muted: #51617f;
  --shadow: 0 10px 26px rgba(13, 23, 47, 0.1);
  --bg-glow1: rgba(255, 122, 0, 0.08);
  --bg-glow2: rgba(11, 191, 165, 0.1);
  --bg-grad1: #f7f9fd;
  --bg-grad2: #eef2fa;
  --bg-grad3: #e8edf8;
  --layer-soft: rgba(13, 23, 47, 0.04);
  --layer-strong: rgba(13, 23, 47, 0.06);
  --progress-bg: rgba(13, 23, 47, 0.08);
  --chip-border: rgba(13, 23, 47, 0.12);
  --pill-border: rgba(13, 23, 47, 0.12);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  font-family: 'Space Grotesk', 'Pretendard', 'Inter', system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at 20% 20%, var(--bg-glow1), transparent 28%),
    radial-gradient(circle at 80% 0%, var(--bg-glow2), transparent 30%),
    linear-gradient(145deg, var(--bg-grad1) 0%, var(--bg-grad2) 45%, var(--bg-grad3) 100%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
  scrollbar-width: none;
  -ms-overflow-style: none;
  overflow: hidden;
}
html::-webkit-scrollbar,
body::-webkit-scrollbar {
  width: 0;
  height: 0;
}

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  background-image: linear-gradient(45deg, rgba(255, 255, 255, 0.015) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(255, 255, 255, 0.015) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(255, 255, 255, 0.015) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(255, 255, 255, 0.015) 75%);
  background-size: 3px 3px;
  mix-blend-mode: soft-light;
  opacity: 0.7;
  z-index: 0;
}

.app {
  display: grid;
  grid-template-columns: 250px 1fr;
  height: 100vh;
  position: relative;
  z-index: 1;
}

.sidebar {
  background: var(--bg-2);
  border-right: 1px solid var(--border);
  min-height: 100vh;
  padding: 22px 20px;
  position: sticky;
  top: 0;
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: #0b1224;
  background-image: url('./images/logo.png');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.brand-text .title {
  display: block;
  font-weight: 700;
}

.brand-text .subtitle {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.nav-item {
  color: var(--muted);
  text-decoration: none;
  padding: 10px 12px;
  border-radius: 10px;
  transition: 0.15s ease;
  display: flex;
  gap: 10px;
  align-items: center;
}

.nav-item .dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--teal);
  opacity: 0;
}

.nav-item:hover {
  background: var(--layer-soft);
  color: var(--text);
}

.nav-item.active {
  background: rgba(255, 122, 0, 0.15);
  color: var(--text);
  border: 1px solid rgba(255, 122, 0, 0.25);
}

.nav-item.active .dot {
  opacity: 1;
}

.sidebar-footer {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-actions {
  display: flex;
  flex-direction: row;
  gap: 8px;
}

.main {
  padding: 16px 24px 24px;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 12px;
  height: 100vh;
  overflow: hidden;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.main::-webkit-scrollbar { width: 0; height: 0; }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(12, 19, 38, 0.95), rgba(10, 17, 32, 0.92));
}
[data-theme="light"] .topbar {
  background: linear-gradient(135deg, #f8fbff, #e7eef8);
  border-color: #d7e1f3;
  box-shadow: 0 10px 24px rgba(13, 23, 47, 0.08);
}

.main-body {
  height: 100%;
  max-height: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-right: 4px;
  padding-bottom: 8px;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.project-picker label {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

.select {
  background: var(--layer-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.search input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--layer-soft);
  color: var(--text);
}

.search input::placeholder {
  color: var(--muted);
}

.top-actions {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 10px;
}

.icon-btn {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  padding: 0;
}

.lang-toggle {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.mode-toggle {
  display: flex;
  background: var(--layer-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.mode-btn {
  border: none;
  background: transparent;
  color: var(--muted);
  padding: 9px 12px;
  cursor: pointer;
  font-weight: 700;
  font-size: 13px;
  transition: 0.15s ease;
}

.mode-btn.active {
  background: linear-gradient(135deg, #ff7a00, #ff9f3a);
  color: #0b0b0b;
}

.btn-primary,
.btn-secondary,
.btn-ghost {
  border: none;
  cursor: pointer;
  border-radius: 10px;
  font-weight: 600;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #ff7a00, #ff9f3a);
  color: #0b0b0b;
  padding: 10px 16px;
  box-shadow: 0 12px 40px rgba(255, 122, 0, 0.25);
}

.btn-secondary {
  background: rgba(11, 191, 165, 0.12);
  color: #0b0b0b;
  border: 1px solid rgba(11, 191, 165, 0.3);
  padding: 10px 14px;
}

[data-theme="dark"] .btn-secondary { color: #9df1e2; }

.btn-ghost {
  background: var(--layer-soft);
  color: var(--text);
  padding: 10px 12px;
  border: 1px solid var(--border);
}

.btn-primary:hover,
.btn-secondary:hover,
.btn-ghost:hover {
  transform: translateY(-1px);
}

.theme-toggle {
  width: 40px;
  height: 40px;
  padding: 0;
  text-align: center;
  font-size: 0;
  background-position: center;
  background-repeat: no-repeat;
  background-size: 24px 24px;
}

[data-theme="dark"] .theme-toggle {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3Cdefs%3E%3ClinearGradient id='moonHalf' x1='0%25' y1='0%25' x2='100%25' y2='100%25'%3E%3Cstop offset='0%25' stop-color='%23ffe071'/%3E%3Cstop offset='100%25' stop-color='%23f4c33a'/%3E%3C/linearGradient%3E%3C/defs%3E%3Cpath d='M32 8 A24 24 0 1 1 32 56 L32 8 Z' fill='url(%23moonHalf)' stroke='%23d8aa32' stroke-width='2' stroke-linejoin='round'/%3E%3C/svg%3E");
}

[data-theme="light"] .theme-toggle {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 64'%3E%3Cdefs%3E%3CradialGradient id='sunCore2' cx='50%25' cy='45%25' r='55%25'%3E%3Cstop offset='0%25' stop-color='%23fff6c9'/%3E%3Cstop offset='55%25' stop-color='%23ffd44f'/%3E%3Cstop offset='100%25' stop-color='%23ffb300'/%3E%3C/radialGradient%3E%3C/defs%3E%3Ccircle cx='32' cy='32' r='16' fill='url(%23sunCore2)' stroke='%23ffb300' stroke-width='2'/%3E%3C/svg%3E");
  background-color: var(--layer-soft);
  border-color: var(--border);
}

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: linear-gradient(135deg, #5c7cff, #9bc5ff);
  display: grid;
  place-items: center;
  color: #0b0b0b;
  font-weight: 700;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 14px;
}

.scenario-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
}

.scenario-grid {
  display: grid;
  grid-template-columns: 0.3fr 0.7fr;
  grid-template-rows: auto 1fr;
  gap: 14px;
  align-items: start;
  height: 100%;
  min-height: 0;
}

.section-caption {
  grid-column: 1 / -1;
  grid-row: 1;
  color: var(--text-strong);
  font-size: 15px;
  font-weight: 700;
  margin: 0 0 0 4px;
}
.section-caption.left-caption { grid-column: 1 / 2; }
.section-caption.right-caption { grid-column: 2 / 3; }
.caption-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.caption-actions {
  display: flex;
  gap: 8px;
}
.results-card { grid-column: 2 / 3; grid-row: 2; }
.scenario-form { grid-column: 1 / 2; grid-row: 2; }

.card.scenario-form {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  height: 100%;
  min-height: 0;
}

.results-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  min-height: 0;
}

.scenario-form .form-group {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 4px;
  margin-bottom: 8px;
}

.scenario-form label {
  color: #ff7a00;
  font-size: 15px;
  font-weight: 700;
  min-width: 100px;
  flex-shrink: 0;
}
[data-theme="light"] .scenario-form label {
  color: #0d172f;
}

.scenario-form input,
.scenario-form select,
.scenario-form textarea {
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--layer-soft);
  color: var(--text);
  flex: 1;
  font-family: inherit;
  min-width: 0;
  width: 100%;
}
.scenario-form select option {
  color: var(--text);
  background: var(--bg-2);
}
[data-theme="light"] .scenario-form select option {
  background: #ffffff;
  color: #0f172a;
}

.scenario-form textarea { resize: vertical; }

.scenario-form input::placeholder,
.scenario-form textarea::placeholder {
  color: var(--muted);
  font-style: normal;
}

.inline {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

.tag-checkboxes {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px 4px;
  justify-content: flex-end;
}
.scenario-form .tag-checkboxes {
  flex: 1;
  width: 100%;
  justify-content: flex-end;
}

.tag-toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 6px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--layer-soft);
  color: var(--muted);
  cursor: pointer;
  font-size: 11px;
  font-weight: 500;
  transition: 0.12s ease;
}

.tag-toggle.active {
  border-color: rgba(255, 122, 0, 0.8);
  background: rgba(255, 122, 0, 0.16);
  color: #b35400;
  font-weight: 600;
  box-shadow: 0 8px 20px rgba(255, 122, 0, 0.22);
}

.duration-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 7px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--layer-soft);
  color: var(--text);
  cursor: pointer;
  font-size: 11px;
  min-width: 40px;
  transition: 0.12s ease;
}

#duration-tags {
  flex-wrap: wrap;
  gap: 4px;
  justify-content: flex-start;
}

.duration-toggle.active {
  border-color: rgba(255, 122, 0, 0.8);
  background: rgba(255, 122, 0, 0.16);
  color: #b35400;
  box-shadow: 0 8px 20px rgba(255, 122, 0, 0.22);
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 16px;
}

.scenario-results {
  min-height: 320px;
  position: relative;
  overflow: hidden;
}

.error-banner {
  background: rgba(220, 53, 69, 0.16);
  border: 1px solid rgba(220, 53, 69, 0.4);
  color: #f8d7da;
  padding: 10px 12px;
  border-radius: 10px;
  margin-bottom: 8px;
  font-size: 14px;
}
[data-theme="light"] .error-banner {
  background: rgba(220, 53, 69, 0.12);
  border-color: rgba(220, 53, 69, 0.5);
  color: #b02a37;
}
.error-banner.hidden { display: none; }

.scenario-cards {
  display: grid;
  gap: 12px;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding-right: 4px;
  scrollbar-width: none;
}
.scenario-cards::-webkit-scrollbar { width: 0; height: 0; }

.loading-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: rgba(12, 19, 38, 0.65);
  color: var(--text);
  backdrop-filter: blur(2px);
  z-index: 5;
}
.loading-overlay.hidden { display: none; }
.spinner {
  width: 34px;
  height: 34px;
  border: 3px solid rgba(255,255,255,0.25);
  border-top-color: #ff7a00;
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.scenario-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px 14px 18px;
  background: var(--panel);
  position: relative;
}

.scenario-card:not(:first-child)::before {
  content: '';
  display: block;
  height: 0;
  border-top: 1px dashed rgba(255, 255, 255, 0.32);
  margin: 12px -14px 18px;
}

.scenario-card .card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.scenario-card h5 {
  margin: 4px 0;
}

.scenario-card p {
  margin: 4px 0;
}

.scenario-card .actions {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}

.channel-left h4 {
  margin: 0 0 6px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip-filter {
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: #dfe7ff;
  font-size: 13px;
  cursor: pointer;
  transition: 0.12s ease;
}

.chip-filter.active {
  border-color: rgba(255, 122, 0, 0.8);
  background: rgba(255, 122, 0, 0.16);
  color: #ffb86a;
  box-shadow: 0 8px 22px rgba(255, 122, 0, 0.25);
}
[data-theme="light"] .chip-filter {
  background: rgba(13, 23, 47, 0.05);
  border-color: #cbd6ea;
  color: #0d172f;
}
[data-theme="light"] .chip-filter.active {
  background: rgba(255, 122, 0, 0.18);
  border-color: rgba(255, 122, 0, 0.8);
  color: #b35400;
  box-shadow: 0 10px 26px rgba(255, 122, 0, 0.18);
}

[data-theme="light"] .top-actions .btn-ghost {
  border-color: #cbd6ea;
  color: #0d172f;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px 20px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}
[data-theme="light"] .card {
  border-color: #d7e1f3;
  box-shadow: 0 10px 26px rgba(15, 23, 42, 0.12);
}

.card.hero {
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: space-between;
}

.card.hero h2,
.card.hero h3 {
  margin: 4px 0;
}

.card.hero.accent-orange {
  background: linear-gradient(145deg, rgba(255, 122, 0, 0.18), rgba(255, 122, 0, 0.05)), var(--card);
  border-color: rgba(255, 122, 0, 0.35);
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  color: var(--muted);
  margin: 0;
}

.muted {
  color: var(--muted);
  font-size: 14px;
}

.content {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.project {
  padding-top: 16px;
}

.card-accent {
  position: absolute;
  top: 0;
  left: 0;
  height: 6px;
  width: 100%;
  background: var(--border);
}

.card-accent.orange { background: linear-gradient(90deg, #ff7a00, #ffaf45); }
.card-accent.teal { background: linear-gradient(90deg, #0bbfa5, #60ffd8); }
.card-accent.blue { background: linear-gradient(90deg, #5c7cff, #9bb3ff); }

.project-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.chip {
  background: var(--layer-strong);
  border: 1px solid var(--chip-border);
  color: var(--text);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
}
[data-theme="light"] .chip {
  background: rgba(13, 23, 47, 0.06);
  color: #0d172f;
}

.chip.pale { color: #0b7f6c; border-color: rgba(11, 191, 165, 0.3); }
[data-theme="dark"] .chip.pale { color: #a4fff2; }
.chip.warn { color: #b85700; border-color: rgba(255, 122, 0, 0.4); }
[data-theme="dark"] .chip.warn { color: #ffd89a; }
.chip.alert { color: #c13b26; border-color: rgba(255, 96, 73, 0.5); background: rgba(255, 96, 73, 0.08); }
[data-theme="dark"] .chip.alert { color: #ffb3a5; }
.chip.neutral { color: var(--muted); border-color: var(--chip-border); }

.progress {
  height: 10px;
  background: var(--progress-bg);
  border-radius: 999px;
  margin: 12px 0 8px;
  overflow: hidden;
}

.progress.thin { height: 6px; }

.fill {
  height: 100%;
  width: 40%;
  background: linear-gradient(90deg, #ff7a00, #ffaf45);
  border-radius: inherit;
}

.fill.teal { background: linear-gradient(90deg, #0bbfa5, #73ffd7); }

.meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: var(--text);
}

.side-panels {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
  width: 100%;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 14px 12px;
  box-shadow: var(--shadow);
}
[data-theme="light"] .panel {
  border-color: #d7e1f3;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.activity {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.activity li {
  background: var(--layer-strong);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}

.queue {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.queue-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--layer-strong);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}

.queue-row.active-step {
  border-color: rgba(255, 122, 0, 0.6);
  box-shadow: 0 10px 24px rgba(255, 122, 0, 0.18);
  background: linear-gradient(90deg, rgba(255, 122, 0, 0.15), transparent);
}

.proj-table {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.proj-row {
  display: grid;
  grid-template-columns: 1fr 2fr 1.2fr 1.2fr;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--layer-strong);
  font-size: 14px;
}

.proj-row.head {
  background: transparent;
  border: 1px dashed var(--border);
  color: var(--muted);
  font-size: 13px;
}

.rules {
  list-style: none;
  padding: 0;
  margin: 8px 0 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--text);
}

.rules li {
  background: var(--layer-strong);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 14px;
}

.flow-hint {
  margin: 6px 0 10px;
  color: var(--muted);
  font-size: 13px;
}

.btn-secondary.full {
  width: 100%;
  text-align: center;
}

.pill {
  background: var(--layer-strong);
  border-radius: 999px;
  padding: 6px 10px;
  color: var(--text);
  font-size: 12px;
  border: 1px solid var(--pill-border);
}

.pill.warn { border-color: rgba(255, 122, 0, 0.45); color: #b85700; }
[data-theme="dark"] .pill.warn { color: #ffcba3; }
.pill.neutral { border-color: rgba(11, 191, 165, 0.4); color: #0b7f6c; }
[data-theme="dark"] .pill.neutral { color: #a4fff2; }

.storage {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.hero-grid button,
.project button,
.queue button { align-self: flex-start; }

/* Responsive */
@media (max-width: 1280px) {
  .app { grid-template-columns: 90px 1fr; }
  .sidebar { padding: 20px 12px; }
  .nav-item { padding: 10px 8px; font-size: 14px; }
  .nav-item:not(.active) { color: #c7d3f0; }
  .brand-text { display: none; }
}

@media (max-width: 1100px) {
  .topbar { grid-template-columns: 1fr; }
  .top-actions { justify-content: flex-start; }
  .hero-grid { grid-template-columns: 1fr 1fr; }
  .hero-grid .card:nth-child(1) { grid-column: span 2; }
  .content { grid-template-columns: 1fr; }
  .side-panels { flex-direction: row; flex-wrap: wrap; }
  .side-panels .panel { flex: 1 1 260px; }
  .scenario-grid { grid-template-columns: 1fr; }
  .section-caption.left-caption,
  .section-caption.right-caption,
  .results-card,
  .scenario-form {
    grid-column: 1 / -1;
    grid-row: auto;
  }
}

@media (max-width: 780px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position: relative; flex-direction: row; flex-wrap: wrap; gap: 10px; }
  .nav { flex-direction: row; flex-wrap: wrap; }
  .nav-item { flex: 1 1 40%; justify-content: center; }
  .hero-grid { grid-template-columns: 1fr; }
  .scenario-grid { grid-template-columns: 1fr; }
}