*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --teal: #0d9488; --teal-light: #14b8a6; --teal-dark: #0f766e;
  --teal-glow: rgba(13,148,136,0.12); --teal-glow2: rgba(13,148,136,0.06);
  --cream: #f7f9f8; --dark: #0a1628; --dark2: #112240;
  --muted: #64748b; --muted2: #94a3b8;
  --border: #e2e8f0; --white: #ffffff;
  --gold: #f59e0b; --error: #ef4444; --success: #10b981;
}
html { scroll-behavior: smooth; }
body { font-family: 'Plus Jakarta Sans', sans-serif; background: var(--cream); color: var(--dark); overflow-x: hidden; min-height: 100vh; }

nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.9rem 2.5rem;
  background: rgba(247,249,248,0.92); backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-logo { font-size: 1.35rem; font-weight: 800; color: var(--dark); text-decoration: none; display: flex; align-items: center; gap: 0.5rem; letter-spacing: -0.02em; }
.nav-logo .logo-icon { width: 30px; height: 30px; background: linear-gradient(135deg, var(--teal), var(--teal-light)); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 0.9rem; }
.nav-logo span { color: var(--teal); }
.nav-links { display: flex; gap: 0.2rem; list-style: none; }
.nav-links a { text-decoration: none; color: var(--muted); font-size: 0.85rem; font-weight: 600; padding: 0.4rem 0.8rem; border-radius: 8px; transition: all 0.2s; }
.nav-links a:hover { color: var(--dark); background: var(--border); }
.nav-links a.active { color: var(--teal); background: var(--teal-glow); }
.nav-right { display: flex; align-items: center; gap: 0.8rem; }
.nav-cta { background: var(--teal); color: white; padding: 0.5rem 1.2rem; border-radius: 9px; text-decoration: none; font-size: 0.85rem; font-weight: 700; transition: all 0.2s; box-shadow: 0 2px 10px rgba(13,148,136,0.25); }
.nav-cta:hover { background: var(--teal-dark); transform: translateY(-1px); }
.nav-back { color: var(--muted); text-decoration: none; font-size: 0.85rem; font-weight: 600; display: flex; align-items: center; gap: 0.3rem; padding: 0.4rem 0.8rem; border-radius: 8px; transition: all 0.2s; }
.nav-back:hover { color: var(--teal); background: var(--teal-glow); }

.page-wrap { max-width: 880px; margin: 0 auto; padding: 6.5rem 2rem 4rem; }
.page-header { margin-bottom: 2.5rem; }
.page-badge { display: inline-flex; align-items: center; gap: 0.4rem; background: var(--teal-glow); border: 1px solid rgba(13,148,136,0.2); padding: 0.35rem 0.9rem; border-radius: 100px; font-size: 0.78rem; font-weight: 700; color: var(--teal-dark); margin-bottom: 1rem; letter-spacing: 0.03em; text-transform: uppercase; }
.page-title { font-size: clamp(1.9rem, 4vw, 2.7rem); font-weight: 800; color: var(--dark); margin-bottom: 0.6rem; line-height: 1.15; letter-spacing: -0.02em; }
.page-title em { font-style: normal; color: var(--teal); }
.page-sub { color: var(--muted); font-size: 1rem; line-height: 1.65; max-width: 540px; }

.card { background: white; border: 1px solid var(--border); border-radius: 20px; padding: 1.8rem; margin-bottom: 1.5rem; box-shadow: 0 1px 3px rgba(0,0,0,0.03), 0 8px 24px rgba(0,0,0,0.04); }
.card-title { font-size: 0.95rem; font-weight: 700; color: var(--dark); margin-bottom: 1.2rem; display: flex; align-items: center; gap: 0.5rem; }

.form-group { margin-bottom: 1.1rem; }
label { display: block; font-size: 0.81rem; font-weight: 700; color: var(--dark); margin-bottom: 0.4rem; letter-spacing: 0.02em; text-transform: uppercase; }
input, select, textarea { width: 100%; padding: 0.72rem 1rem; border: 1.5px solid var(--border); border-radius: 11px; font-family: 'Plus Jakarta Sans', sans-serif; font-size: 0.93rem; color: var(--dark); background: white; outline: none; transition: all 0.2s; }
input:focus, select:focus, textarea:focus { border-color: var(--teal); box-shadow: 0 0 0 4px rgba(13,148,136,0.08); }
input::placeholder, textarea::placeholder { color: var(--muted2); }
textarea { resize: vertical; min-height: 100px; line-height: 1.6; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 0.8rem; }

input[type="range"] { -webkit-appearance: none; height: 6px; background: var(--border); border-radius: 3px; padding: 0; border: none; box-shadow: none; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 18px; height: 18px; background: var(--teal); border-radius: 50%; cursor: pointer; border: 3px solid white; box-shadow: 0 1px 5px rgba(13,148,136,0.4); }
input[type="range"]:focus { box-shadow: none; border-color: transparent; }

.btn { width: 100%; padding: 0.82rem 2rem; background: linear-gradient(135deg, var(--teal) 0%, var(--teal-light) 100%); color: white; border: none; border-radius: 11px; font-family: 'Plus Jakarta Sans', sans-serif; font-size: 0.93rem; font-weight: 700; cursor: pointer; transition: all 0.2s; display: flex; align-items: center; justify-content: center; gap: 0.5rem; box-shadow: 0 4px 14px rgba(13,148,136,0.3); letter-spacing: 0.01em; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(13,148,136,0.4); }
.btn:active { transform: translateY(0); }
.btn:disabled { background: #cbd5e1; cursor: not-allowed; transform: none; box-shadow: none; }

.result-card { background: white; border: 1px solid var(--border); border-radius: 20px; padding: 1.8rem; display: none; animation: fadeUp 0.35s ease; box-shadow: 0 4px 24px rgba(0,0,0,0.05); }
.result-card.show { display: block; }
.result-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.4rem; padding-bottom: 1.2rem; border-bottom: 1px solid var(--border); }
.result-icon { width: 42px; height: 42px; flex-shrink: 0; background: var(--teal-glow); border-radius: 11px; display: flex; align-items: center; justify-content: center; font-size: 1.15rem; }
.result-title { font-weight: 800; font-size: 1rem; color: var(--dark); }
.result-subtitle { font-size: 0.78rem; color: var(--muted); margin-top: 0.1rem; }
.result-body { font-size: 0.91rem; line-height: 1.8; color: #374151; }
.result-body h2 { font-size: 0.97rem; font-weight: 800; color: var(--dark); margin: 1.3rem 0 0.5rem; }
.result-body h3 { font-size: 0.92rem; font-weight: 700; color: var(--dark); margin: 1rem 0 0.3rem; }
.result-body p { margin-bottom: 0.5rem; }
.result-body ul, .result-body ol { padding-left: 1.3rem; margin-bottom: 0.7rem; }
.result-body li { margin-bottom: 0.35rem; }
.result-body strong { color: var(--dark); font-weight: 700; }
.result-body hr { border: none; border-top: 1px solid var(--border); margin: 1.1rem 0; }
.result-body em { color: var(--muted); }

.loading { display: none; text-align: center; padding: 3rem 2rem; }
.loading.show { display: block; }
.loading-spinner { width: 42px; height: 42px; border: 3px solid var(--border); border-top-color: var(--teal); border-radius: 50%; animation: spin 0.7s linear infinite; margin: 0 auto 1rem; }
.loading-text { color: var(--muted); font-size: 0.9rem; font-weight: 600; }
.loading-sub { color: var(--muted2); font-size: 0.8rem; margin-top: 0.3rem; }

.error-msg { background: #fef2f2; border: 1px solid #fecaca; border-radius: 11px; padding: 0.85rem 1.1rem; color: var(--error); font-size: 0.87rem; font-weight: 600; display: none; margin-bottom: 1.2rem; align-items: center; gap: 0.5rem; }
.error-msg.show { display: flex; }

.info-box { background: var(--teal-glow); border: 1px solid rgba(13,148,136,0.2); border-radius: 11px; padding: 0.9rem 1.1rem; display: flex; gap: 0.7rem; align-items: flex-start; margin-top: 1.2rem; }
.info-box p { font-size: 0.82rem; color: var(--teal-dark); line-height: 1.5; font-weight: 500; }
.warn-box { background: #fffbeb; border: 1px solid #fde68a; border-radius: 11px; padding: 0.9rem 1.1rem; display: flex; gap: 0.7rem; align-items: flex-start; margin-top: 1.2rem; }
.warn-box p { font-size: 0.82rem; color: #92400e; line-height: 1.5; font-weight: 500; }

.stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card { background: white; border: 1px solid var(--border); border-radius: 14px; padding: 1.1rem; text-align: center; }
.stat-val { font-size: 1.9rem; font-weight: 900; color: var(--teal); line-height: 1; margin-bottom: 0.25rem; letter-spacing: -0.03em; }
.stat-label { font-size: 0.75rem; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; }

.tab-row { display: flex; gap: 0.3rem; margin-bottom: 1.5rem; background: var(--cream); padding: 0.3rem; border-radius: 12px; }
.tab-btn { flex: 1; padding: 0.55rem 1rem; border: none; border-radius: 9px; background: transparent; font-family: 'Plus Jakarta Sans', sans-serif; font-size: 0.85rem; font-weight: 700; color: var(--muted); cursor: pointer; transition: all 0.2s; }
.tab-btn.active { background: white; color: var(--teal); box-shadow: 0 1px 4px rgba(0,0,0,0.08); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.upload-area { border: 2px dashed var(--border); border-radius: 14px; padding: 2.5rem 1.5rem; text-align: center; cursor: pointer; transition: all 0.2s; background: var(--cream); }
.upload-area:hover, .upload-area.dragover { border-color: var(--teal); background: var(--teal-glow); }
.upload-area input { display: none; }
.upload-icon { font-size: 2.2rem; margin-bottom: 0.8rem; }
.upload-area h4 { font-size: 0.93rem; font-weight: 700; margin-bottom: 0.3rem; }
.upload-area p { font-size: 0.8rem; color: var(--muted); }
.file-preview { display: none; background: var(--teal-glow); border: 1px solid rgba(13,148,136,0.2); border-radius: 10px; padding: 0.75rem 1rem; margin-top: 1rem; align-items: center; gap: 0.8rem; }
.file-preview.show { display: flex; }
.file-preview span { font-size: 0.87rem; color: var(--teal-dark); flex: 1; font-weight: 600; }
.file-remove { background: none; border: none; cursor: pointer; color: var(--muted); font-size: 1rem; padding: 0.2rem; }

footer { background: var(--dark); padding: 2.5rem 3rem; text-align: center; margin-top: 4rem; }
.footer-logo { font-size: 1.3rem; font-weight: 800; color: white; margin-bottom: 0.8rem; display: flex; align-items: center; justify-content: center; gap: 0.5rem; letter-spacing: -0.02em; }
.footer-logo .logo-icon { width: 26px; height: 26px; background: linear-gradient(135deg, var(--teal), var(--teal-light)); border-radius: 6px; display: flex; align-items: center; justify-content: center; font-size: 0.8rem; }
.footer-logo span { color: var(--teal-light); }
.footer-links { display: flex; justify-content: center; gap: 1.5rem; list-style: none; margin: 1rem 0; flex-wrap: wrap; }
.footer-links a { color: rgba(255,255,255,0.35); text-decoration: none; font-size: 0.8rem; font-weight: 600; transition: color 0.2s; }
.footer-links a:hover { color: var(--teal-light); }
.footer-copy { color: rgba(255,255,255,0.2); font-size: 0.76rem; margin-top: 1rem; }

@keyframes fadeUp { from { opacity:0; transform:translateY(18px); } to { opacity:1; transform:translateY(0); } }
@keyframes spin { to { transform:rotate(360deg); } }

@media (max-width: 768px) {
  nav { padding: 0.85rem 1.2rem; }
  .nav-links { display: none; }
  .page-wrap { padding: 5.5rem 1.1rem 3rem; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  footer { padding: 2rem 1.5rem; }
}

.submit-btn{width:100%;padding:.85rem;background:var(--teal);color:white;border:none;border-radius:12px;font-family:inherit;font-size:.95rem;font-weight:700;cursor:pointer;transition:all .2s;margin-top:.5rem;box-shadow:0 4px 15px rgba(13,148,136,.25);}
.submit-btn:hover{background:var(--teal-dark);transform:translateY(-1px);}
.submit-btn:disabled{opacity:.6;transform:none;cursor:not-allowed;}
.result-card{background:white;border:1px solid var(--border);border-radius:20px;overflow:hidden;margin-top:1.5rem;}
.result-header{padding:1.25rem 1.8rem;background:linear-gradient(135deg,var(--teal-glow),rgba(13,148,136,.04));border-bottom:1px solid var(--border);display:flex;align-items:center;gap:1rem;}
.result-icon{width:44px;height:44px;background:var(--teal);color:white;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.3rem;flex-shrink:0;}
.result-title{font-size:1rem;font-weight:700;color:var(--dark);}
.result-sub{font-size:.8rem;color:var(--muted);margin-top:.15rem;}
.result-body{padding:1.8rem;font-size:.9rem;line-height:1.7;color:var(--dark);}


.submit-btn{width:100%;padding:.85rem;background:var(--teal);color:white;border:none;border-radius:12px;font-family:inherit;font-size:.95rem;font-weight:700;cursor:pointer;transition:all .2s;margin-top:.5rem;box-shadow:0 4px 15px rgba(13,148,136,.25);}
.submit-btn:hover{background:var(--teal-dark);transform:translateY(-1px);}
.submit-btn:disabled{opacity:.6;transform:none;cursor:not-allowed;}
.result-card{background:white;border:1px solid var(--border);border-radius:20px;overflow:hidden;margin-top:1.5rem;}
.result-header{padding:1.25rem 1.8rem;background:linear-gradient(135deg,var(--teal-glow),rgba(13,148,136,.04));border-bottom:1px solid var(--border);display:flex;align-items:center;gap:1rem;}
.result-icon{width:44px;height:44px;background:var(--teal);color:white;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.3rem;flex-shrink:0;}
.result-title{font-size:1rem;font-weight:700;color:var(--dark);}
.result-sub{font-size:.8rem;color:var(--muted);margin-top:.15rem;}
.result-body{padding:1.8rem;font-size:.9rem;line-height:1.7;color:var(--dark);}


.submit-btn{width:100%;padding:.85rem;background:var(--teal);color:white;border:none;border-radius:12px;font-family:inherit;font-size:.95rem;font-weight:700;cursor:pointer;transition:all .2s;margin-top:.5rem;box-shadow:0 4px 15px rgba(13,148,136,.25);}
.submit-btn:hover{background:var(--teal-dark);transform:translateY(-1px);}
.submit-btn:disabled{opacity:.6;transform:none;cursor:not-allowed;}
.result-card{background:white;border:1px solid var(--border);border-radius:20px;overflow:hidden;margin-top:1.5rem;}
.result-header{padding:1.25rem 1.8rem;background:linear-gradient(135deg,var(--teal-glow),rgba(13,148,136,.04));border-bottom:1px solid var(--border);display:flex;align-items:center;gap:1rem;}
.result-icon{width:44px;height:44px;background:var(--teal);color:white;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.3rem;flex-shrink:0;}
.result-title{font-size:1rem;font-weight:700;color:var(--dark);}
.result-sub{font-size:.8rem;color:var(--muted);margin-top:.15rem;}
.result-body{padding:1.8rem;font-size:.9rem;line-height:1.7;color:var(--dark);}