/* ─── 亞馥／理仁牙醫稅務規劃建議書 — 客製樣式 ─────────────────────
 * 沿用 lico-base.css 的設計變數，做客製化擴充
 * 黑底漸層 Hero + 黃褐強調色（牙醫專業感）
 */

:root {
  /* 客製化變數（不覆蓋 lico-base 的）*/
  --c-accent-amber:  #ffb84d;     /* 牙醫主色：暖琥珀 */
  --c-accent-sky:    #5ac8ff;     /* 試算數字強調 */
  --c-accent-violet: #7850ff;     /* 紫色：合規 / 重要提示 */
  --c-warn-red:      #ff453a;     /* 警示 */
  --c-bg-deep:       #0a0a0c;     /* 深黑底 */
  --c-bg-card:       rgba(255,255,255,0.04);
  --c-border-subtle: rgba(255,255,255,0.09);
  --c-border-hover:  rgba(255,255,255,0.18);
  --c-text-light:    rgba(255,255,255,0.92);
  --c-text-muted:    rgba(255,255,255,0.55);
  --c-text-dim:      rgba(255,255,255,0.35);
  --grad-amber:      linear-gradient(135deg, #ffb84d 0%, #ff7a45 100%);
  --grad-sky:        linear-gradient(135deg, #5ac8ff 0%, #0071e3 50%, #7850ff 100%);
  --grad-bg-hero:    radial-gradient(ellipse at 50% 0%, rgba(120, 80, 255, 0.18) 0%, transparent 60%);
}

/* ─── Body / Global override ───────────────────────────────────── */
body {
  background: var(--c-bg-deep);
  color: var(--c-text-light);
}

a { color: var(--c-accent-sky); }
a:hover { text-decoration: underline; }

/* ─── Top Nav（黑底版本） ──────────────────────────────────────── */
.proposal-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: 56px;
  background: rgba(10, 10, 12, 0.7);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--c-border-subtle);
}
.proposal-nav-inner {
  max-width: 1080px; margin: 0 auto; padding: 0 24px;
  height: 100%; display: flex; align-items: center; justify-content: space-between;
}
.proposal-nav-brand {
  font-size: 15px; font-weight: 700;
  background: var(--grad-amber);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.01em;
}
.proposal-nav-brand-sub {
  margin-left: 8px;
  font-size: 12px; color: var(--c-text-muted); font-weight: 400;
  letter-spacing: 0.04em;
}
.proposal-nav-links { display: none; gap: 24px; }
.proposal-nav-links a {
  font-size: 13px; color: var(--c-text-muted); transition: color 0.2s;
}
.proposal-nav-links a:hover, .proposal-nav-links a.active { color: var(--c-text-light); }
@media (min-width: 768px) { .proposal-nav-links { display: flex; } }

/* ─── Hero ─────────────────────────────────────────────────────── */
.proposal-hero {
  padding-top: 56px;
  min-height: 70vh;
  display: flex; align-items: center;
  position: relative; overflow: hidden;
  background: var(--c-bg-deep);
}
.proposal-hero::before {
  content: ''; position: absolute; inset: 0;
  background: var(--grad-bg-hero);
  pointer-events: none;
}
.proposal-hero-inner {
  max-width: 1080px; margin: 0 auto; padding: 80px 24px;
  position: relative; z-index: 1; width: 100%;
}
.proposal-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; font-weight: 600;
  color: var(--c-text-muted);
  letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 20px;
}
.proposal-eyebrow-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--c-accent-amber);
  box-shadow: 0 0 10px var(--c-accent-amber);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.6;transform:scale(1.3)} }

.proposal-headline {
  font-size: clamp(36px, 5.5vw, 64px);
  font-weight: 900; letter-spacing: -0.04em; line-height: 1.06;
  color: #fff; margin-bottom: 20px;
}
.proposal-headline-em {
  background: var(--grad-amber);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.proposal-sub {
  font-size: 17px; color: var(--c-text-muted);
  line-height: 1.7; max-width: 640px; margin-bottom: 32px;
}
.demo-tag {
  display: inline-block; padding: 4px 10px;
  background: rgba(255, 184, 77, 0.12);
  border: 1px solid rgba(255, 184, 77, 0.35);
  color: var(--c-accent-amber);
  border-radius: 999px; font-size: 11px; font-weight: 600;
  letter-spacing: 0.05em;
}

/* ─── Section ─────────────────────────────────────────────────── */
.proposal-section { padding: 80px 24px; }
.proposal-container { max-width: 1080px; margin: 0 auto; }
.proposal-section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800; letter-spacing: -0.03em;
  color: #fff; margin-bottom: 16px;
}
.proposal-section-desc {
  font-size: 16px; color: var(--c-text-muted);
  line-height: 1.7; max-width: 720px; margin-bottom: 48px;
}

/* ─── Card 通用 ────────────────────────────────────────────────── */
.card {
  background: var(--c-bg-card);
  border: 1px solid var(--c-border-subtle);
  border-radius: 18px;
  padding: 28px;
  transition: border-color 0.2s, transform 0.2s;
}
.card:hover {
  border-color: var(--c-border-hover);
}
.card-eyebrow {
  font-size: 11px; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; margin-bottom: 12px;
}
.card-eyebrow.amber { color: var(--c-accent-amber); }
.card-eyebrow.sky   { color: var(--c-accent-sky); }
.card-eyebrow.violet{ color: var(--c-accent-violet); }
.card-title {
  font-size: 22px; font-weight: 700; color: #fff;
  margin-bottom: 12px; letter-spacing: -0.01em;
}
.card-desc {
  font-size: 14px; color: var(--c-text-muted); line-height: 1.65;
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 720px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 980px) {
  .card-grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ─── 試算器 ─────────────────────────────────────────────────── */
.calc-wrap {
  background: var(--c-bg-card);
  border: 1px solid var(--c-border-subtle);
  border-radius: 22px;
  padding: 32px;
}
@media (min-width: 880px) {
  .calc-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}
.calc-input-group {
  display: flex; flex-direction: column; gap: 18px;
}
.calc-input-row label {
  display: block;
  font-size: 13px; font-weight: 600;
  color: var(--c-text-light); margin-bottom: 6px;
}
.calc-input-row .hint {
  display: block; font-size: 11px; color: var(--c-text-dim); margin-top: 4px;
}
.calc-input-row input[type=number],
.calc-input-row input[type=text],
.calc-input-row select {
  width: 100%;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--c-border-subtle);
  border-radius: 10px;
  padding: 11px 14px;
  color: #fff;
  font-size: 15px; font-family: inherit;
  transition: border-color 0.2s;
}
.calc-input-row input:focus,
.calc-input-row select:focus {
  outline: none; border-color: var(--c-accent-sky);
}
.calc-input-row input[type=range] { width: 100%; accent-color: var(--c-accent-amber); }

.calc-output {
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--c-border-subtle);
  border-radius: 14px;
  padding: 24px;
  margin-top: 24px;
}
@media (min-width: 880px) {
  .calc-output { margin-top: 0; }
}
.calc-output-row {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--c-border-subtle);
}
.calc-output-row:last-child { border-bottom: none; }
.calc-output-row .label {
  font-size: 13px; color: var(--c-text-muted);
}
.calc-output-row .value {
  font-size: 18px; font-weight: 700; color: #fff;
  font-variant-numeric: tabular-nums;
}
.calc-output-row .value.big {
  font-size: 28px;
  background: var(--grad-amber);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.calc-output-row .value.sky {
  background: var(--grad-sky);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ─── Compliance / Warning Banner ─────────────────────────────── */
.compliance-banner {
  background: rgba(255, 69, 58, 0.08);
  border: 1px solid rgba(255, 69, 58, 0.3);
  border-radius: 14px;
  padding: 18px 22px;
  margin-bottom: 32px;
  font-size: 13px;
  color: rgba(255, 200, 195, 0.95);
  line-height: 1.65;
}
.compliance-banner strong { color: var(--c-warn-red); }

.note-box {
  background: rgba(120, 80, 255, 0.06);
  border-left: 3px solid var(--c-accent-violet);
  border-radius: 0 10px 10px 0;
  padding: 14px 18px;
  margin: 24px 0;
  font-size: 13px;
  color: var(--c-text-muted);
  line-height: 1.7;
}

/* ─── Footer ───────────────────────────────────────────────────── */
.proposal-footer {
  border-top: 1px solid var(--c-border-subtle);
  padding: 40px 24px;
  text-align: center;
  font-size: 12px; color: var(--c-text-dim);
  line-height: 1.7;
}

/* ─── Architecture SVG nodes ──────────────────────────────────── */
.arch-node-card {
  cursor: pointer;
  transition: all 0.25s var(--ease-out);
}
.arch-node-card:hover {
  border-color: var(--c-accent-amber);
  transform: translateY(-2px);
}
.arch-node-card.active {
  border-color: var(--c-accent-amber);
  box-shadow: 0 0 0 1px var(--c-accent-amber);
}

/* ─── Page Index Pills ────────────────────────────────────────── */
.page-index {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-bottom: 48px;
}
.page-index-pill {
  background: var(--c-bg-card);
  border: 1px solid var(--c-border-subtle);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 12px; color: var(--c-text-muted);
  transition: all 0.2s;
}
.page-index-pill:hover {
  border-color: var(--c-accent-amber);
  color: var(--c-text-light);
  text-decoration: none;
}
.page-index-pill.active {
  background: var(--grad-amber);
  border-color: transparent;
  color: #1a0e00;
  font-weight: 600;
}