/* ══════════════════════════════════════════════════
   PleatPerfect — The Custom Drapery Architecture Tool
   Design: Deep navy / charcoal with soft gold / ivory accents
   ══════════════════════════════════════════════════ */

:root {
    --clr-bg:          #0A1128;
    --clr-surface-1:   #141C3A;
    --clr-surface-2:   #1E284D;
    --clr-border:      #2A3660;
    --clr-text:        #FDFBF7;
    --clr-text-muted:  #A0ABC0;
    --clr-accent:      #D4AF37;
    --clr-accent-hover: #E5C158;
    --clr-accent-glow: rgba(212, 175, 55, 0.12);
    --clr-pleat:       #D4AF37;
    --clr-space:       #4A5D8A;
    --clr-return:      #8B9AB5;
    --radius:          12px;
    --font-sans:       'Inter', system-ui, sans-serif;
    --font-serif:      'Cormorant Garamond', Georgia, serif;
    --font-mono:       'JetBrains Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font-sans); background: var(--clr-bg); color: var(--clr-text); line-height: 1.6; min-height: 100vh; display: flex; flex-direction: column; }
.container { width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 1rem; }
.main-content { flex: 1; }

.site-header { background: linear-gradient(135deg, #141C3A 0%, #0A1128 100%); border-bottom: 2px solid var(--clr-accent); padding: 2.5rem 0 2rem; text-align: center; }
.header-inner { display: flex; flex-direction: column; align-items: center; gap: 0.5rem; }
.brand { display: flex; align-items: center; gap: 0.8rem; }
.brand-icon { font-size: 2.5rem; }
.brand-name { font-family: var(--font-serif); font-size: 2.5rem; font-weight: 700; color: var(--clr-text); letter-spacing: 0.5px; }
.brand-accent { color: var(--clr-accent); }
.brand-tagline { font-size: 0.85rem; font-weight: 600; color: var(--clr-accent); text-transform: uppercase; letter-spacing: 2px; }
.brand-subtitle { font-size: 0.9rem; color: var(--clr-text-muted); max-width: 520px; margin-top: 0.5rem; }

.privacy-badge { display: inline-flex; align-items: center; gap: 0.6rem; background: var(--clr-accent-glow); border: 1px solid var(--clr-accent); border-radius: 99px; padding: 0.4rem 1.2rem; font-size: 0.75rem; font-weight: 500; color: var(--clr-accent); margin: 2rem auto; width: fit-content; text-transform: uppercase; letter-spacing: 1px; }
.badge-icon { font-size: 1rem; }

.app-grid { display: grid; grid-template-columns: 1fr; gap: 2rem; }
@media (min-width: 860px) { .app-grid { grid-template-columns: 420px 1fr; } }

.panel { background: var(--clr-surface-1); border: 1px solid var(--clr-border); border-radius: var(--radius); padding: 2rem; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2); }
.panel-title { font-family: var(--font-serif); font-size: 1.5rem; font-weight: 600; color: var(--clr-accent); margin-bottom: 1.5rem; border-bottom: 1px solid var(--clr-border); padding-bottom: 0.8rem; }

.input-group { margin-bottom: 1.2rem; }
.input-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.input-group label { display: block; font-size: 0.85rem; font-weight: 500; color: var(--clr-text-muted); margin-bottom: 0.4rem; }
.input-group input { width: 100%; padding: 0.75rem 1rem; font-size: 1rem; background: var(--clr-surface-2); color: var(--clr-text); border: 1px solid var(--clr-border); border-radius: 8px; font-family: var(--font-mono); transition: all 0.2s; box-shadow: inset 0 2px 4px rgba(0,0,0,0.1); }
.input-group input:focus { outline: none; border-color: var(--clr-accent); box-shadow: 0 0 0 2px var(--clr-accent-glow); }

.toggle-group { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.toggle-btn { position: relative; display: block; }
.toggle-btn input { position: absolute; opacity: 0; cursor: pointer; height: 0; width: 0; }
.toggle-btn span { display: block; padding: 0.6rem; text-align: center; background: var(--clr-surface-2); border: 1px solid var(--clr-border); border-radius: 8px; font-size: 0.85rem; font-weight: 500; color: var(--clr-text-muted); cursor: pointer; transition: all 0.2s; }
.toggle-btn:hover span { background: var(--clr-border); color: var(--clr-text); }
.toggle-btn input:checked ~ span { background: var(--clr-accent-glow); border-color: var(--clr-accent); color: var(--clr-accent); font-weight: 600; }

.input-fieldset { border: 1px solid var(--clr-border); border-radius: 8px; padding: 1.2rem; margin-bottom: 1.5rem; background: var(--clr-surface-2); }
.input-fieldset legend { font-size: 0.8rem; font-weight: 600; color: var(--clr-accent); padding: 0 0.8rem; text-transform: uppercase; letter-spacing: 1px; }
.input-fieldset .input-group:last-child { margin-bottom: 0; }
.input-fieldset .input-group input { background: var(--clr-surface-1); }

.btn-calculate { width: 100%; padding: 1rem; font-size: 1.1rem; font-weight: 700; font-family: var(--font-sans); background: linear-gradient(135deg, var(--clr-accent), #B89020); color: #0A1128; border: none; border-radius: 8px; cursor: pointer; transition: all 0.2s; text-transform: uppercase; letter-spacing: 1px; }
.btn-calculate:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(212, 175, 55, 0.3); background: linear-gradient(135deg, var(--clr-accent-hover), var(--clr-accent)); }
.btn-calculate:active { transform: translateY(0); }

.summary-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; margin-bottom: 2rem; }
.summary-card { background: var(--clr-surface-2); border: 1px solid var(--clr-border); border-radius: 8px; padding: 1.2rem 1rem; text-align: center; transition: transform 0.2s; }
.summary-card:hover { transform: translateY(-2px); }
.summary-card--highlight { border-color: var(--clr-accent); background: var(--clr-accent-glow); position: relative; overflow: hidden; }
.summary-card--highlight::after { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 2px; background: var(--clr-accent); }
.summary-label { display: block; font-size: 0.75rem; color: var(--clr-text-muted); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 0.4rem; }
.summary-value { display: block; font-family: var(--font-mono); font-size: 1.6rem; font-weight: 700; color: var(--clr-text); }
.summary-card--highlight .summary-value { color: var(--clr-accent); }

/* ── Virtual Tape Measure ── */
.tape-measure-section { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--clr-border); }
.section-subtitle { font-family: var(--font-serif); font-size: 1.3rem; font-weight: 600; color: var(--clr-text); margin-bottom: 0.5rem; }
.section-hint { font-size: 0.85rem; color: var(--clr-text-muted); margin-bottom: 1.5rem; }
.tape-measure-container { background: var(--clr-surface-2); border: 1px solid var(--clr-border); border-radius: 12px; padding: 1.5rem; min-height: 120px; box-shadow: inset 0 2px 10px rgba(0,0,0,0.2); }
.tape-placeholder { font-size: 0.9rem; color: var(--clr-text-muted); text-align: center; padding: 2rem 0; font-style: italic; }

/* ── SVG Styling ── */
.tape-measure-container svg {
    display: block;
    margin: 0 auto;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.3));
}

.ad-slot { display: flex; align-items: center; justify-content: center; border: 2px dashed var(--clr-border); color: var(--clr-text-muted); font-size: 0.75rem; margin: 2rem auto; border-radius: 8px; background: rgba(0,0,0,0.1); font-family: var(--font-mono); text-transform: uppercase; letter-spacing: 1px; }
.ad-slot--mobile { width: 320px; height: 50px; }
.ad-slot--desktop { display: none; width: 728px; height: 90px; }
@media (min-width: 768px) { .ad-slot--mobile { display: none; } .ad-slot--desktop { display: flex; } }

.site-footer { text-align: center; padding: 2rem 0; color: var(--clr-text-muted); font-size: 0.85rem; border-top: 1px solid var(--clr-border); margin-top: 3rem; background: var(--clr-surface-1); }
.site-footer strong { color: var(--clr-text); }

/* ═══════════════ AFFILIATE & SEO ═══════════════ */
.seo-card {
    background: var(--clr-surface-1);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin: 2rem 0;
}
.seo-card h2 {
    color: var(--clr-text);
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}
.seo-card p {
    color: var(--clr-text-muted);
    line-height: 1.6;
}
.affiliate-gear a {
    color: var(--clr-accent);
    font-weight: 600;
    text-decoration: none;
}
.affiliate-gear a:hover {
    color: var(--clr-text);
    text-decoration: underline;
}