/* ============================================================
   TekproAI — base.css
   Shared styles used by: index.html, calculator.html, sip-calculator.html
   ============================================================ */

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Design Tokens ── */
:root {
  --black:      #080a09;
  --surface:    #0f1310;
  --green:      #00e676;
  --green-dim:  #00e67622;
  --green-mid:  #00e67644;
  --gold:       #ffd166;
  --text:       #d8e8da;
  --muted:      #4a5e4d;
  --border:     #1a2b1d;
  --wa:         #25D366;
}

/* ── Base ── */
html { height: 100%; }
body {
  background: var(--black);
  color: var(--text);
  font-family: 'Outfit', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  cursor: none;
}

/* ── Custom Cursor ── */
.cursor {
  position: fixed; width: 12px; height: 12px;
  background: var(--green); border-radius: 50%;
  pointer-events: none; z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width 0.2s, height 0.2s;
  mix-blend-mode: screen;
}
.cursor-ring {
  position: fixed; width: 36px; height: 36px;
  border: 1px solid var(--green); border-radius: 50%;
  pointer-events: none; z-index: 9998;
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s, opacity 0.2s;
  opacity: 0.4;
}

/* ── Background: Noise + Grid ── */
body::before {
  content: ''; position: fixed; inset: 0; z-index: 1;
  opacity: 0.6; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
}
body::after {
  content: ''; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(0,230,118,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,230,118,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* ── Page wrapper ── */
.page {
  position: relative; z-index: 2;
  min-height: 100vh; display: flex; flex-direction: column;
}

/* ── Particles ── */
.particles { position: fixed; inset: 0; pointer-events: none; z-index: 1; overflow: hidden; }
.particle  {
  position: absolute; background: var(--green); border-radius: 50%;
  opacity: 0; animation: float-up var(--dur) ease-in var(--delay) infinite;
}

/* ── Nav ── */
nav { border-bottom: 1px solid var(--border); animation: fadeDown 0.8s ease both; }
.nav-top {
  display: flex; justify-content: space-between; align-items: center; padding: 18px 28px;
}
.logo {
  font-family: 'Bebas Neue', sans-serif; font-size: 22px;
  letter-spacing: 3px; color: var(--green); text-decoration: none;
}
.logo span { color: var(--text); }
.nav-right { display: flex; align-items: center; gap: 8px; }
.nav-badge {
  font-family: 'DM Mono', monospace; font-size: 9px; color: var(--muted);
  border: 1px solid var(--border); padding: 4px 10px; border-radius: 20px;
  letter-spacing: 2px; text-transform: uppercase;
}
.nav-contact-btn {
  font-family: 'DM Mono', monospace; font-size: 10px; letter-spacing: 1px;
  color: var(--green); border: 1px solid rgba(0,230,118,0.35); background: none;
  padding: 6px 14px; border-radius: 20px; cursor: pointer;
  transition: all 0.2s; text-transform: uppercase;
}
.nav-contact-btn:hover { background: var(--green-dim); border-color: var(--green); }
.nav-wa-btn {
  display: flex; align-items: center; gap: 6px;
  background: rgba(37,211,102,0.08); border: 1px solid rgba(37,211,102,0.28);
  border-radius: 20px; padding: 6px 12px; cursor: pointer;
  color: var(--wa); font-family: 'DM Mono', monospace; font-size: 10px;
  letter-spacing: 0.5px; text-transform: uppercase; transition: all 0.2s; white-space: nowrap;
}
.nav-wa-btn:hover { background: rgba(37,211,102,0.18); border-color: var(--wa); }
.nav-cta-bar {
  display: flex; justify-content: center; padding: 10px 28px 14px;
  border-top: 1px solid var(--border);
}
.nav-cta-link {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  width: 100%; max-width: 400px;
  background: var(--green); border: none; border-radius: 8px; padding: 12px 28px;
  font-family: 'Bebas Neue', sans-serif; font-size: 16px; letter-spacing: 2px;
  color: #000; text-decoration: none; cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
}
.nav-cta-link:hover { opacity: 0.88; transform: translateY(-1px); }

/* ── Footer ── */
footer {
  padding: 28px 24px 20px; border-top: 1px solid var(--border);
  display: flex; flex-direction: column; align-items: center; gap: 16px;
  animation: fadeUp 1s ease 1s both;
}
.footer-social {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap; justify-content: center;
}
.footer-social a {
  display: flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--muted); text-decoration: none; transition: all 0.2s; flex-shrink: 0;
}
.footer-social a:hover {
  border-color: var(--green); color: var(--green);
  background: var(--green-dim); transform: translateY(-2px);
}
.footer-social a svg { flex-shrink: 0; }
.footer-email {
  font-family: 'DM Mono', monospace; font-size: 12px; color: var(--muted);
  text-decoration: none; letter-spacing: 1px; transition: color 0.2s; text-align: center;
}
.footer-email:hover { color: var(--green); }
.footer-divider { width: 40px; height: 1px; background: var(--border); }
.footer-bottom { display: flex; flex-direction: column; align-items: center; gap: 8px; }
.footer-copy {
  font-family: 'DM Mono', monospace; font-size: 11px;
  color: var(--muted); letter-spacing: 1px; text-align: center;
}
.footer-legal { display: flex; gap: 16px; align-items: center; }
.footer-legal button {
  font-family: 'DM Mono', monospace; font-size: 11px; color: var(--muted);
  background: none; border: none; cursor: pointer; letter-spacing: 1px;
  text-decoration: underline; text-underline-offset: 3px; transition: color 0.2s; padding: 0;
}
.footer-legal button:hover { color: var(--green); }
.footer-legal-dot { width: 3px; height: 3px; border-radius: 50%; background: var(--border); flex-shrink: 0; }

/* ── Contact Bottom Sheet ── */
.sheet-backdrop {
  position: fixed; inset: 0; z-index: 900;
  background: rgba(0,0,0,0.65); backdrop-filter: blur(4px);
  opacity: 0; pointer-events: none; transition: opacity 0.25s ease;
  touch-action: none;
}
.sheet-backdrop.open { opacity: 1; pointer-events: all; }
.sheet {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 1000;
  background: #111a12; border-top: 1px solid var(--border);
  border-radius: 20px 20px 0 0;
  box-shadow: 0 -6px 32px rgba(0,0,0,0.55);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity 0.22s ease, visibility 0.22s ease;
  max-height: 85dvh; overflow-y: auto; overflow-x: hidden;
  -webkit-overflow-scrolling: touch; overscroll-behavior: contain;
}
.sheet.open { opacity: 1; visibility: visible; pointer-events: all; }
.sheet-handle { width: 36px; height: 4px; background: var(--border); border-radius: 2px; margin: 12px auto 0; }
.sheet-inner  { padding: 18px 22px 32px; }
.sheet-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 16px; }
.sheet-eyebrow { font-family: 'DM Mono', monospace; font-size: 9px; color: var(--green); letter-spacing: 3px; text-transform: uppercase; margin-bottom: 6px; }
.sheet-title   { font-family: 'Bebas Neue', sans-serif; font-size: 28px; letter-spacing: 2px; color: var(--text); line-height: 1; }
.sheet-sub     { font-size: 12px; color: var(--muted); margin-top: 5px; line-height: 1.5; }
.sheet-close {
  background: var(--surface); border: 1px solid var(--border); color: var(--muted);
  font-size: 15px; cursor: pointer; width: 30px; height: 30px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; transition: all 0.18s; font-family: monospace; margin-top: 2px;
}
.sheet-close:hover { border-color: var(--green); color: var(--green); background: var(--green-dim); }
.sheet-field { margin-bottom: 13px; }
.sheet-field label {
  display: block; font-family: 'DM Mono', monospace; font-size: 9px;
  color: var(--muted); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 5px;
}
.sheet-field input,
.sheet-field textarea {
  width: 100%; background: var(--black); border: 1px solid var(--border);
  border-radius: 8px; padding: 12px 14px; color: var(--text);
  font-family: 'DM Mono', monospace; font-size: max(16px, 14px);
  outline: none; transition: border-color 0.18s; -webkit-appearance: none;
}
.sheet-field textarea { height: 80px; resize: none; }
.sheet-field input::placeholder,
.sheet-field textarea::placeholder { color: var(--muted); }
.sheet-field input:focus,
.sheet-field textarea:focus { border-color: var(--green); box-shadow: 0 0 0 2px var(--green-dim); }
.sheet-actions { display: flex; gap: 10px; margin-top: 18px; }
.sheet-submit {
  flex: 1; background: var(--green); border: none; border-radius: 10px;
  padding: 14px; font-family: 'Bebas Neue', sans-serif; font-size: 16px;
  letter-spacing: 2px; color: #000; cursor: pointer; transition: opacity 0.18s;
}
.sheet-submit:hover    { opacity: 0.88; }
.sheet-submit:disabled { opacity: 0.5; cursor: not-allowed; }
.sheet-wa {
  display: flex; align-items: center; gap: 7px; padding: 13px 16px;
  background: rgba(37,211,102,0.08); border: 1px solid rgba(37,211,102,0.25);
  border-radius: 10px; color: var(--wa); font-family: 'DM Mono', monospace;
  font-size: 11px; cursor: pointer; transition: all 0.18s; white-space: nowrap;
}
.sheet-wa:hover { background: rgba(37,211,102,0.18); }
.sheet-status {
  display: none; font-family: 'DM Mono', monospace; font-size: 11px;
  padding: 10px 14px; border-radius: 8px; margin-top: 12px; text-align: center;
}
.sheet-status.success { color: var(--green); background: var(--green-dim); border: 1px solid var(--green-mid); }
.sheet-status.error   { color: #ff4757; background: rgba(255,71,87,0.08); border: 1px solid rgba(255,71,87,0.25); }

/* ── Policy Modal ── */
.policy-overlay {
  position: fixed; inset: 0; z-index: 1200;
  background: rgba(0,0,0,0.8); backdrop-filter: blur(8px);
  opacity: 0; pointer-events: none; transition: opacity 0.25s ease;
  display: flex; align-items: flex-end;
}
.policy-overlay.open { opacity: 1; pointer-events: all; }
.policy-sheet {
  width: 100%; max-height: 88dvh; background: #0c1410;
  border-top: 1px solid var(--border); border-radius: 20px 20px 0 0;
  display: flex; flex-direction: column;
  transform: translateY(100%); transition: transform 0.3s ease;
  box-shadow: 0 -8px 40px rgba(0,0,0,0.6);
}
.policy-overlay.open .policy-sheet { transform: translateY(0); }
.policy-handle { width: 36px; height: 4px; background: var(--border); border-radius: 2px; margin: 12px auto; flex-shrink: 0; }
.policy-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 4px 22px 14px; border-bottom: 1px solid var(--border); flex-shrink: 0;
}
.policy-title { font-family: 'Bebas Neue', sans-serif; font-size: 24px; letter-spacing: 2px; color: var(--text); }
.policy-close {
  background: var(--surface); border: 1px solid var(--border); color: var(--muted);
  width: 30px; height: 30px; border-radius: 50%; cursor: pointer; font-size: 14px;
  display: flex; align-items: center; justify-content: center; transition: all 0.18s;
}
.policy-close:hover { border-color: var(--green); color: var(--green); }
.policy-body {
  overflow-y: auto; padding: 20px 22px 36px; flex: 1;
  font-size: 13px; color: var(--muted); line-height: 1.8;
  -webkit-overflow-scrolling: touch;
}
.policy-body h3 {
  font-family: 'DM Mono', monospace; font-size: 10px; color: var(--green);
  letter-spacing: 3px; text-transform: uppercase; margin: 20px 0 8px;
}
.policy-body h3:first-child { margin-top: 0; }
.policy-body p  { margin-bottom: 10px; }
.policy-body a  { color: var(--green); }

/* ── Animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-14px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes float-up {
  0%   { transform: translateY(100vh); opacity: 0; }
  10%  { opacity: 0.6; }
  90%  { opacity: 0.2; }
  100% { transform: translateY(-10vh) translateX(var(--drift)); opacity: 0; }
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0.2; } }

/* ── Responsive ── */
@media (max-width: 560px) {
  .nav-top        { padding: 14px 16px; }
  .nav-badge      { display: none; }
  .nav-wa-btn span { display: none; }
  .nav-cta-bar    { padding: 8px 16px 12px; }
  footer          { padding: 22px 16px 18px; gap: 14px; }
  .footer-social  { gap: 8px; }
  .footer-social a { width: 32px; height: 32px; }
  .footer-bottom  { gap: 6px; }
  body            { cursor: auto; }
  .sheet-inner    { padding: 16px 18px 24px; }
  .sheet-actions  { flex-direction: column; }
}