/* Vectonica Tools — Shared UI v1.0 | tools.vectonica.com */
/* ============================================
   VECTONICA TOOLS — SHARED UI SYSTEM
   Import this in every tool page's <head>:
   <link rel="stylesheet" href="../assets/ui.css">
   Dashboard uses: <link rel="stylesheet" href="assets/ui.css">
   ============================================ */

/* SECTION 1 — Google Fonts import */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* SECTION 2 — CSS Variables */
:root {
  --green: #87e64b;
  --green-dark: #6bc935;
  --blue: #046bd2;
  --navy: #1e293b;
  --navy-2: #2d4a6e;
  --bg-warm: #fff7ef;
  --bg-card: #ffffff;
  --bg-input: #fff7ef;
  --bg-output: #f8fdf4;
  --border: #e8ddd3;
  --muted: #64748b;
  --text: #1e293b;
  --green-glow: rgba(135,230,75,0.15);
  --font-main: 'Plus Jakarta Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --transition: all 0.2s ease;
}

/* SECTION 3 — Reset + Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font-main); background: var(--bg-warm); color: var(--text); line-height: 1.6; }
img { max-width: 100%; display: block; }
a { text-decoration: none; }
input, textarea, select, button { font-family: var(--font-main); }
html { scroll-behavior: smooth; }

/* SECTION 4 — NAVBAR */
.vt-nav { position: sticky; top: 0; z-index: 20; background: var(--bg-card); border-bottom: 1px solid var(--border); backdrop-filter: blur(12px); }
.vt-nav-inner { width: min(1120px, calc(100% - 32px)); margin: 0 auto; display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 78px; }
.vt-nav-logo { display: flex; align-items: center; text-decoration: none; }
.vt-nav-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 999px; padding: 14px 18px; font-weight: 700; transition: var(--transition); background: var(--green); color: var(--navy); box-shadow: 0 10px 25px rgba(135, 230, 75, 0.28); }
.vt-nav-btn:hover { transform: translateY(-3px); }
@media (max-width: 700px) { .vt-nav-inner { min-height: 72px; } .vt-nav-btn { width: 100%; } }
@media (max-width: 520px) { .vt-nav-inner { flex-direction: column; justify-content: center; padding: 14px 0; } }

/* SECTION 5 — HERO */
.vt-hero { background: linear-gradient(155deg, var(--bg-card) 0%, var(--bg-warm) 55%, #fff2e6 100%); padding: 72px 0 48px; }
.vt-hero-inner { width: min(1120px, calc(100% - 32px)); margin: 0 auto; display: grid; gap: 22px; justify-items: center; text-align: center; }
.vt-badge { display: inline-flex; align-items: center; gap: 8px; border-radius: 999px; white-space: nowrap; width: fit-content; padding: 10px 14px; background: transparent; color: var(--green-dark); border: 1px solid var(--green); font-size: 13px; font-weight: 700; }
.vt-hero h1 { max-width: 760px; font-size: clamp(2.1rem, 5vw, 4.3rem); line-height: 1.05; letter-spacing: -0.04em; }
.vt-hero h1 span { background: linear-gradient(90deg, var(--green-dark) 0%, var(--blue) 100%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.vt-hero-sub { max-width: 760px; color: var(--muted); font-size: clamp(1rem, 1.6vw, 1.125rem); line-height: 1.75; }
.vt-trust-pills { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; justify-content: center; }
.vt-trust-pill { display: inline-flex; align-items: center; gap: 8px; border-radius: 999px; white-space: nowrap; padding: 10px 14px; border: 1px solid var(--border); background: rgba(255, 255, 255, 0.78); color: var(--navy); font-weight: 600; box-shadow: 0 8px 20px rgba(30, 41, 59, 0.05); }
@media (max-width: 700px) { .vt-hero { padding-top: 48px; } }

/* SECTION 6 — CONVERTER TOOL CARD */
.vt-tool-card { background: var(--bg-card); border: 1.5px solid var(--border); border-radius: var(--radius-lg); box-shadow: 0 12px 30px rgba(30, 41, 59, 0.05); transition: var(--transition); max-width: 900px; margin: 0 auto; padding: 28px; }
.vt-direction-label { background: var(--navy); color: var(--bg-card); font-weight: 700; border-radius: var(--radius-md); padding: 12px; font-size: 15px; text-align: center; width: 100%; }
.vt-direction-link { display: block; text-align: right; font-size: 12px; color: var(--muted); margin-top: 6px; text-decoration: none; }
.vt-panels { display: flex; gap: 20px; flex-wrap: nowrap; align-items: stretch; justify-content: space-between; }
.vt-panel { flex: 1 1 0; min-width: 0; display: flex; flex-direction: column; gap: 12px; }
.vt-panel-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em; color: var(--muted); font-weight: 700; display: inline-block; }
.vt-panel-count { font-size: 12px; color: var(--muted); font-weight: 600; }
.vt-textarea { width: 100%; min-height: 220px; resize: vertical; border: 1.5px solid var(--border); border-radius: var(--radius-md); padding: 16px; font-family: var(--font-mono); font-size: 15px; line-height: 1.65; color: var(--navy); transition: var(--transition); background: var(--bg-input); }
.vt-textarea:focus { outline: none; border-color: var(--green); box-shadow: 0 0 0 4px var(--green-glow); }
.vt-output-area { background: var(--bg-output); }
.vt-panel-btns { display: flex; flex-wrap: wrap; gap: 10px; }
.vt-btn-sm { border: 1px solid var(--border); background: var(--bg-card); color: var(--navy); padding: 10px 14px; border-radius: var(--radius-md); font-weight: 700; cursor: pointer; transition: var(--transition); }
.vt-btn-sm:hover { transform: translateY(-3px); }
.vt-swap-btn { width: 52px; height: 52px; border: 0; border-radius: 50%; background: var(--navy); color: var(--bg-card); font-size: 22px; cursor: pointer; box-shadow: 0 12px 26px rgba(30, 41, 59, 0.16); transition: var(--transition); display: flex; align-items: center; justify-content: center; flex: 0 0 52px; align-self: center; }
.vt-swap-btn:hover { background: var(--green); color: var(--navy); transform: scale(1.1); }
.vt-convert-btn { border: 0; background: var(--green); color: var(--navy); font-weight: 800; font-size: 15px; padding: 14px 36px; border-radius: var(--radius-md); cursor: pointer; box-shadow: 0 14px 30px rgba(135, 230, 75, 0.24); transition: var(--transition); margin-top: 24px; display: inline-block; }
.vt-convert-btn:hover { transform: translateY(-3px); }
@media (max-width: 980px) { .vt-panels { flex-wrap: wrap; } .vt-panel { flex-basis: 100%; } .vt-swap-btn { transform: rotate(90deg); margin: 0 auto; order: 3; flex: 1 1 100%; max-width: 52px; } .vt-swap-btn:hover { transform: rotate(90deg) scale(1.1); } }
@media (max-width: 700px) { .vt-tool-card { padding: 24px; } }
@media (max-width: 520px) { .vt-btn-sm { width: 100%; } .vt-panel-btns { flex-direction: column; } }

/* SECTION 7 — HOW TO USE */
.vt-howto { padding: 20px; display: grid; gap: 10px; }
.vt-howto-grid { display: grid; gap: 16px; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.vt-howto-card { background: var(--bg-card); border: 1.5px solid var(--border); border-radius: var(--radius-lg); box-shadow: 0 12px 30px rgba(30, 41, 59, 0.05); transition: var(--transition); padding: 20px; display: grid; gap: 10px; }
.vt-howto-card:hover { transform: translateY(-3px); }
.vt-howto-icon { font-size: 1.5rem; }
.vt-howto h3 { font-size: 1.1rem; color: var(--text); }
.vt-howto p { color: var(--muted); line-height: 1.7; font-size: 13px; margin: 0; }
@media (max-width: 980px) { .vt-howto-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 700px) { .vt-howto-grid { grid-template-columns: 1fr; } }

/* SECTION 8 — ABOUT SECTION */
.vt-about { background: var(--bg-card); border: 1.5px solid var(--border); border-radius: var(--radius-lg); box-shadow: 0 12px 30px rgba(30, 41, 59, 0.05); transition: var(--transition); padding: 20px; display: grid; gap: 10px; }
.vt-about:hover { transform: translateY(-3px); }
.vt-about h2 { margin-bottom: 12px; font-size: 1.5rem; color: var(--text); }
.vt-about p { color: var(--muted); line-height: 1.7; font-size: 13px; margin-bottom: 12px; }

/* SECTION 9 — CTA BANNER */
.vt-cta { margin-top: 48px; border-radius: var(--radius-xl); padding: 40px; background: linear-gradient(135deg, var(--navy) 0%, var(--navy-2) 100%); color: var(--bg-card); box-shadow: 0 24px 44px rgba(30, 41, 59, 0.2); display: flex; gap: 12px; flex-wrap: wrap; align-items: center; justify-content: space-between; }
.vt-cta h2 { margin: 0 0 10px 0; font-size: 22px; font-weight: 800; color: var(--bg-card); max-width: 640px; }
.vt-cta p { color: rgba(255, 255, 255, 0.74); line-height: 1.7; margin: 0 0 20px 0; max-width: 640px; }
.vt-cta-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 6px; }
.vt-cta-tag { padding: 9px 12px; border: 1px solid rgba(135, 230, 75, 0.28); background: var(--green-glow); color: var(--green); font-size: 13px; font-weight: 600; border-radius: 999px; }
.vt-cta-btns { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: flex-end; }
.vt-cta-btn-primary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 999px; padding: 14px 18px; font-weight: 700; transition: var(--transition); background: var(--green); color: var(--navy); box-shadow: 0 10px 25px rgba(135, 230, 75, 0.28); }
.vt-cta-btn-primary:hover { transform: translateY(-3px); }
.vt-cta-btn-secondary { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 999px; padding: 14px 18px; font-weight: 700; transition: var(--transition); border: 1px solid rgba(255, 255, 255, 0.28); color: var(--bg-card); background: transparent; }
.vt-cta-btn-secondary:hover { transform: translateY(-3px); }
@media (max-width: 980px) { .vt-cta { flex-direction: column; align-items: flex-start; } .vt-cta-btns { justify-content: flex-start; } }
@media (max-width: 700px) { .vt-cta { padding: 24px; } .vt-cta-btn-primary, .vt-cta-btn-secondary { width: 100%; } }

/* SECTION 10 — FAQ */
.vt-faq { max-width: 900px; margin: 0 auto; display: grid; gap: 12px; }
.vt-faq-item { background: var(--bg-card); border: 1.5px solid var(--border); border-radius: var(--radius-md); margin-bottom: 12px; overflow: hidden; transition: var(--transition); }
.vt-faq-item:hover { transform: translateY(-3px); }
.faq-question { cursor: pointer; user-select: none; display: flex; align-items: center; justify-content: space-between; padding: 18px 20px; font-size: 14px; font-weight: 600; color: var(--text); gap: 12px; transition: var(--transition); }
.faq-question:hover { background: var(--bg-input); }
.faq-icon { font-size: 18px; font-weight: 400; color: var(--muted); flex-shrink: 0; }
.faq-answer { display: none; padding: 0 20px 18px 20px; font-size: 13px; color: var(--muted); line-height: 1.8; border-top: 1px solid var(--border); }
.faq-answer p { margin-top: 10px; }
.faq-answer p:first-child { margin-top: 0; }

/* SECTION 11 — MORE TOOLS CHIPS */
.vt-more-tools { margin-top: 48px; }
.vt-more-tools h2 { text-align: center; margin-bottom: 22px; font-size: 24px; color: var(--text); }
.vt-chips { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.vt-chip { display: inline-flex; align-items: center; gap: 8px; border-radius: var(--radius-sm); white-space: nowrap; background: var(--bg-warm); border: 1px solid var(--border); padding: 8px 14px; font-size: 13px; font-weight: 600; transition: var(--transition); color: var(--text); }
.vt-chip:hover { border-color: var(--green); background: var(--green-glow); transform: translateY(-3px); }

/* SECTION 12 — FOOTER */
.vt-footer { margin-top: 56px; background: var(--navy); color: rgba(255, 255, 255, 0.55); padding: 32px 16px; text-align: center; }
.vt-footer-inner { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.vt-footer-links { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; justify-content: center; margin-top: 12px; }
.vt-footer a { color: var(--green); font-weight: 600; transition: var(--transition); }
.vt-footer a:hover { transform: translateY(-2px); display: inline-block; }

/* SECTION 13 — CALCULATOR SPECIFIC (for Phase 2 tools) */
.vt-calc-card { background: var(--bg-card); border: 1.5px solid var(--border); border-radius: var(--radius-lg); padding: 32px; max-width: 900px; margin: 0 auto; }
.vt-calc-label { font-size: 13px; font-weight: 700; color: var(--text); margin-bottom: 6px; display: block; }
.vt-calc-input { background: var(--bg-input); border: 1.5px solid var(--border); border-radius: var(--radius-sm); padding: 10px 14px; font-size: 14px; width: 100%; outline: none; transition: var(--transition); }
.vt-calc-input:focus { border-color: var(--green); }
.vt-calc-hint { font-size: 11px; color: var(--muted); margin-top: 4px; }
.vt-calc-result { background: var(--bg-output); border: 1.5px solid var(--green); border-radius: var(--radius-lg); padding: 24px; }
.vt-calc-total { font-size: 36px; font-weight: 800; color: var(--text); text-align: center; }
.vt-calc-sub { font-size: 13px; color: var(--muted); text-align: center; margin-top: 4px; }
.vt-result-row { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 6px; }
.vt-result-row span:first-child { color: var(--muted); }
.vt-result-row span:last-child { font-weight: 600; color: var(--text); }

/* SECTION 14 — PRESET BUTTONS (for Phase 2 tools) */
.vt-presets { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.vt-preset-btn { background: var(--bg-warm); border: 1.5px solid var(--border); border-radius: var(--radius-sm); padding: 8px 16px; font-size: 13px; font-weight: 600; cursor: pointer; transition: var(--transition); color: var(--text); }
.vt-preset-btn:hover { border-color: var(--green); }
.vt-preset-btn.active { background: #f0fdf4; border-color: var(--green); }

/* SECTION 15 — UTILITY CLASSES */
.vt-section { padding: 40px 20px; }
.vt-container { max-width: 900px; margin: 0 auto; }
.vt-section-heading { font-size: 24px; font-weight: 800; color: var(--text); margin-bottom: 8px; text-align: center; }
.vt-section-sub { font-size: 15px; color: var(--muted); text-align: center; margin-bottom: 32px; }
.vt-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.vt-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.vt-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media(max-width: 768px) {
  .vt-grid-2, .vt-grid-3, .vt-grid-4 { grid-template-columns: 1fr; }
}
@media(max-width: 1024px) {
  .vt-grid-3, .vt-grid-4 { grid-template-columns: repeat(2, 1fr); }
}
.vt-btn-primary { background: var(--green); color: var(--navy); font-weight: 800; font-size: 15px; padding: 14px 36px; border-radius: var(--radius-md); border: none; cursor: pointer; transition: var(--transition); font-family: var(--font-main); }
.vt-btn-primary:hover { background: var(--green-dark); transform: translateY(-1px); }
.vt-btn-secondary { background: transparent; color: var(--muted); border: 1.5px solid var(--border); font-weight: 600; font-size: 14px; padding: 12px 20px; border-radius: var(--radius-md); cursor: pointer; transition: var(--transition); font-family: var(--font-main); }
.vt-btn-secondary:hover { border-color: var(--navy); color: var(--navy); }
.vt-badge-green { display: inline-block; background: #f0fdf4; color: #16a34a; font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 50px; text-transform: uppercase; letter-spacing: 0.5px; }
.vt-badge-yellow { display: inline-block; background: var(--bg-warm); color: #f59e0b; font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 50px; text-transform: uppercase; }
.vt-divider { border: none; border-top: 1.5px solid var(--border); margin: 24px 0; }