/* ============================================================
   UpfyLabs — Design System (shared)
   Used by: index.html (landing) + auth pages
   ============================================================ */

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

/* ═══ DARK THEME (default) ═══ */
:root{
  --bg:#020617; --bg1:#080e1d; --bg2:#0d1428;
  --nav-bg:rgba(2,6,23,0.75); --nav-bg-scr:rgba(2,6,23,0.95);
  --indigo:#6366f1; --violet:#8b5cf6; --cyan:#06b6d4; --fuchsia:#d946ef;
  --border:rgba(255,255,255,0.08);
  --border-strong:rgba(255,255,255,0.16);
  --border-h:rgba(99,102,241,0.45);
  --text:#f1f5f9; --text2:#94a3b8; --text3:#475569;
  --card-bg:rgba(255,255,255,0.025);
  --card-border:rgba(255,255,255,0.08);
  --input-bg:rgba(255,255,255,0.03);
  --input-bg-focus:rgba(255,255,255,0.05);
  --dropdown-bg:#0b1226;
  --grad-start:#a78bfa; --grad-end:#06b6d4;
  --particle:rgba(167,139,250,0.7);
  --particle-line:rgba(99,102,241,0.12);
  --orb-main:rgba(99,102,241,0.22);
  --orb-soft:rgba(139,92,246,0.12);
  --shadow-card:0 32px 80px rgba(0,0,0,0.5), 0 0 60px rgba(99,102,241,0.08);
  --error:#f87171;
  --success:#34d399;
  --r:14px; --r-lg:20px;
}

/* ═══ LIGHT THEME ═══ */
:root[data-theme="light"]{
  --bg:#f8fafc; --bg1:#ffffff; --bg2:#f1f5f9;
  --nav-bg:rgba(248,250,252,0.85); --nav-bg-scr:rgba(255,255,255,0.96);
  --border:rgba(15,23,42,0.09);
  --border-strong:rgba(15,23,42,0.18);
  --border-h:rgba(99,102,241,0.5);
  --text:#0f172a; --text2:#475569; --text3:#64748b;
  --card-bg:rgba(255,255,255,0.85);
  --card-border:rgba(15,23,42,0.08);
  --input-bg:rgba(255,255,255,0.7);
  --input-bg-focus:#ffffff;
  --dropdown-bg:#ffffff;
  --grad-start:#6366f1; --grad-end:#0891b2;
  --particle:rgba(99,102,241,0.6);
  --particle-line:rgba(99,102,241,0.1);
  --orb-main:rgba(99,102,241,0.18);
  --orb-soft:rgba(139,92,246,0.1);
  --shadow-card:0 24px 60px rgba(15,23,42,0.10), 0 0 40px rgba(99,102,241,0.06);
  --error:#ef4444;
  --success:#10b981;
}

html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--text);
  font-family:'Inter',sans-serif;
  min-height:100vh; overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  transition:background .4s ease, color .4s ease;
  position:relative;
}
h1,h2,h3,h4{font-family:'Raleway',sans-serif}
a{text-decoration:none;color:inherit}

/* ─── Background atmospherics ─── */
#particles{ position:fixed; inset:0; z-index:0; pointer-events:none; }
.orb{position:fixed;border-radius:50%;filter:blur(140px);pointer-events:none;z-index:0}
.orb-1{width:600px;height:600px;background:var(--orb-main);top:-200px;left:50%;transform:translateX(-50%)}
.orb-2{width:500px;height:500px;background:var(--orb-soft);bottom:-150px;right:-100px}
.grid-bg{
  position:fixed; inset:0; z-index:0; pointer-events:none;
  background-image:
    linear-gradient(rgba(99,102,241,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.035) 1px, transparent 1px);
  background-size:60px 60px;
  mask-image:radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse at center, black 30%, transparent 75%);
}

/* ─── Top bar (auth pages) ─── */
.topbar{
  position:fixed; top:0; left:0; right:0; z-index:100;
  padding:22px 36px;
  display:flex; align-items:center; justify-content:space-between;
}
.logo{
  font-family:'Raleway',sans-serif; font-weight:900; font-size:1.35rem;
  background:linear-gradient(135deg,#a78bfa,#06b6d4);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.topbar-right{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:38px; height:38px; border-radius:10px;
  background:transparent; border:1px solid var(--border);
  display:flex; align-items:center; justify-content:center;
  cursor:pointer; color:var(--text2); font-size:1rem;
  transition:all .25s ease;
}
.icon-btn:hover{border-color:var(--border-strong); color:var(--text); background:var(--card-bg)}
.theme-toggle .icon-sun{display:none}
.theme-toggle .icon-moon{display:block}
:root[data-theme="light"] .theme-toggle .icon-sun{display:block}
:root[data-theme="light"] .theme-toggle .icon-moon{display:none}

.back-link{
  font-size:.82rem; color:var(--text2); font-weight:500;
  padding:9px 14px; border-radius:9px;
  border:1px solid var(--border); transition:all .25s;
  display:inline-flex; align-items:center; gap:6px;
}
.back-link:hover{color:var(--text); border-color:var(--border-strong); background:var(--card-bg)}

/* ─── Auth page layout ─── */
.wrap{
  position:relative; z-index:10;
  min-height:100vh; display:flex; align-items:center; justify-content:center;
  padding:120px 24px 60px;
}
.card{
  width:100%; max-width:480px;
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:var(--r-lg);
  padding:48px 44px 40px;
  backdrop-filter:blur(24px); -webkit-backdrop-filter:blur(24px);
  box-shadow:var(--shadow-card);
  position:relative;
  transition:background .4s ease, border-color .4s ease;
}
.card.wide{max-width:560px}

.eyebrow{
  font-size:.72rem; color:var(--grad-start);
  font-weight:700; letter-spacing:.1em; text-transform:uppercase;
  margin-bottom:10px;
}
h2.card-title{
  font-size:1.65rem; font-weight:800; color:var(--text);
  line-height:1.2; margin-bottom:10px; letter-spacing:-.02em;
}
p.card-hint{
  font-size:.92rem; color:var(--text2); margin-bottom:26px;
  line-height:1.55;
}

/* ─── Inputs ─── */
.field{position:relative; margin-bottom:18px}
.label{
  display:block; font-size:.78rem; color:var(--text2);
  font-weight:600; margin-bottom:8px; letter-spacing:.02em;
}
.input, .select{
  width:100%;
  background:var(--input-bg);
  border:1.5px solid var(--border);
  border-radius:12px;
  padding:16px 18px;
  font-size:1rem;
  color:var(--text);
  font-family:'Inter',sans-serif;
  outline:none;
  transition:all .25s ease;
}
.input::placeholder{color:var(--text3)}
.input:focus, .select:focus{
  background:var(--input-bg-focus);
  border-color:var(--border-h);
  box-shadow:0 0 0 4px rgba(99,102,241,0.12);
}
.input.error, .select.error{border-color:var(--error); box-shadow:0 0 0 4px rgba(248,113,113,0.12)}

.select{
  appearance:none; -webkit-appearance:none; -moz-appearance:none;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'><polyline points='6 9 12 15 18 9'/></svg>");
  background-repeat:no-repeat;
  background-position:right 18px center;
  padding-right:44px;
  cursor:pointer;
}
.select option{background:var(--dropdown-bg); color:var(--text)}

.pw-wrap{position:relative}
.pw-toggle{
  position:absolute; top:50%; right:14px; transform:translateY(-50%);
  background:transparent; border:none; color:var(--text3);
  cursor:pointer; padding:6px; border-radius:6px;
  font-size:1.05rem;
  transition:color .2s;
}
.pw-toggle:hover{color:var(--text)}

.err-msg{
  font-size:.82rem; color:var(--error); margin-top:8px;
  min-height:18px;
  display:flex; align-items:center; gap:6px;
}
.global-msg{
  font-size:.88rem; padding:12px 14px; border-radius:10px;
  margin-bottom:18px; display:none;
}
.global-msg.error{
  background:rgba(248,113,113,0.10);
  border:1px solid rgba(248,113,113,0.25);
  color:var(--error); display:block;
}
.global-msg.success{
  background:rgba(52,211,153,0.10);
  border:1px solid rgba(52,211,153,0.25);
  color:var(--success); display:block;
}

/* ─── Buttons ─── */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-weight:600; border-radius:10px; cursor:pointer;
  font-family:'Inter',sans-serif; border:none; white-space:nowrap;
  transition:all .25s ease;
}
.btn-primary{
  background:linear-gradient(135deg, var(--indigo), var(--violet));
  color:#fff; padding:14px 28px; font-size:.92rem;
  box-shadow:0 4px 20px rgba(99,102,241,0.32);
  width:100%;
}
.btn-primary:hover:not(:disabled){
  transform:translateY(-1px);
  box-shadow:0 8px 28px rgba(99,102,241,0.45);
  filter:brightness(1.08);
}
.btn-primary:disabled{opacity:.45; cursor:not-allowed}

.btn-back{
  background:transparent; color:var(--text2); padding:14px 18px;
  font-size:.88rem; border:1px solid var(--border);
}
.btn-back:hover{color:var(--text); border-color:var(--border-strong); background:var(--card-bg)}

/* ─── Footer hint ─── */
.foot{
  text-align:center; margin-top:24px;
  font-size:.82rem; color:var(--text3);
}
.foot a{color:var(--grad-start); font-weight:600}
.foot a:hover{text-decoration:underline}

/* ─── Success / status icon ─── */
.check-circle{
  width:80px; height:80px; border-radius:50%;
  background:linear-gradient(135deg,#10b981,#06b6d4);
  display:inline-flex; align-items:center; justify-content:center;
  margin:0 auto 24px;
  box-shadow:0 0 40px rgba(16,185,129,0.4);
  animation:pop .6s cubic-bezier(0.34,1.56,0.64,1);
}
.check-circle svg{width:42px; height:42px; color:#fff}
.status-icon-warn{
  width:80px; height:80px; border-radius:50%;
  background:linear-gradient(135deg,#f59e0b,#ef4444);
  display:inline-flex; align-items:center; justify-content:center;
  margin:0 auto 24px;
  box-shadow:0 0 40px rgba(245,158,11,0.35);
  font-size:2.2rem;
}
@keyframes pop{
  0%{transform:scale(0); opacity:0}
  100%{transform:scale(1); opacity:1}
}

/* ─── Responsive ─── */
@media (max-width:600px){
  .card{padding:36px 26px 30px}
  h2.card-title{font-size:1.35rem}
  .topbar{padding:18px 20px}
  .back-link span{display:none}
}

@media (prefers-reduced-motion:reduce){
  .progress-fill, body, .btn, .input{transition:none !important}
  .check-circle{animation:none}
}