:root {
    --bg:         #020617;
    --surface:    rgba(15,23,42,0.60);
    --border:     rgba(255,255,255,0.08);
    --accent:     #00b01a;
    --accent-dim: rgba(0,176,26,0.18);
    --accent-glow:rgba(0,176,26,0.35);
    --text:       #f1f5f9;
    --muted:      #64748b;
    --danger:     #f43f5e;
    --warning:    #f59e0b;
    --numpad-bg:  rgba(255,255,255,0.04);
    --numpad-hover:rgba(0,176,26,0.14);
    --pin-dot:    #334155;
    --pin-filled: #00b01a;
}
* { margin:0; padding:0; box-sizing:border-box; }

/* ── Layout ── */
body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-y: auto;
    padding: 16px 0;
}

/* ── Aurora background ── */
.aurora {
    position:fixed; inset:0; z-index:0; pointer-events:none;
    background:
        radial-gradient(ellipse 80% 60% at 20% 20%, rgba(0,150,22,0.12) 0%, transparent 70%),
        radial-gradient(ellipse 60% 80% at 80% 80%, rgba(59,130,246,0.07) 0%, transparent 70%);
    animation: auroraShift 18s ease-in-out infinite alternate;
}
@keyframes auroraShift {
    0%   { filter: hue-rotate(0deg) brightness(1); }
    100% { filter: hue-rotate(20deg) brightness(1.1); }
}
.particles { position:fixed; inset:0; z-index:0; pointer-events:none; overflow:hidden; }
.particle {
    position:absolute; border-radius:50%;
    background: rgba(0,176,26,0.15);
    animation: drift linear infinite;
}
@keyframes drift {
    0%   { transform:translateY(110vh) scale(0); opacity:0; }
    10%  { opacity:1; }
    90%  { opacity:0.5; }
    100% { transform:translateY(-10vh) scale(1.2); opacity:0; }
}

/* ── Card ── */
.card {
    position: relative; z-index: 10;
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 24px 30px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.6);
    animation: slideUp 0.65s cubic-bezier(0.16,1,0.3,1) forwards;
    opacity:0; transform:translateY(24px);
}
@keyframes slideUp { to { opacity:1; transform:translateY(0); } }

.logo-wrap { text-align:center; margin-bottom:18px; }
.logo-img  { max-height:40px; object-fit:contain; filter:brightness(0) invert(1) drop-shadow(0 2px 8px rgba(0,0,0,0.5)); transition:transform 0.3s; width:auto; }
.logo-img:hover { transform:scale(1.05); }

/* ── Tabs ── */
.tabs {
    display:flex; gap:6px;
    background: rgba(255,255,255,0.03);
    border-radius:12px; padding:4px;
    margin-bottom:20px;
}
.tab-btn {
    flex:1; padding:10px 0; border:none; border-radius:10px;
    font-family:'Outfit',sans-serif; font-size:0.85rem; font-weight:600;
    cursor:pointer; transition:all 0.3s;
    color:var(--muted); background:transparent;
    display:flex; align-items:center; justify-content:center; gap:6px;
}
.tab-btn.active {
    background: linear-gradient(135deg,#00b01a,#007a12);
    color:#fff; box-shadow:0 4px 14px rgba(0,176,26,0.35);
}
.tab-pane { display:none; }
.tab-pane.active { display:block; }

/* ── Alert flash ── */
.alert {
    padding:11px 15px; border-radius:12px;
    font-size:0.875rem; margin-bottom:18px;
    display:flex; align-items:center; gap:8px;
    animation: alertSlide 0.35s cubic-bezier(0.16,1,0.3,1);
}
@keyframes alertSlide { from{opacity:0;transform:translateY(-6px)} to{opacity:1;transform:none} }
.alert-error  { background:rgba(244,63,94,0.14); border:1px solid rgba(244,63,94,0.38); color:#fb7185; }
.alert-success{ background:rgba(0,176,26,0.11);  border:1px solid rgba(0,176,26,0.28);  color:#4ade80; }

/* ── Greeting Box ── */
.greeting-box {
    display:flex; align-items:center; gap:8px;
    animation: slideDown 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
@keyframes slideDown { from{opacity:0;transform:translateY(-8px) scale(0.97)} to{opacity:1;transform:none} }
@keyframes greetIn {
    from { opacity:0; transform:translateY(-8px) scale(0.96); }
    to   { opacity:1; transform:none; }
}
.greeting-avatar {
    width:32px; height:32px; border-radius:8px; flex-shrink:0;
    background: linear-gradient(135deg,#00b01a,#007a12);
    display:flex; align-items:center; justify-content:center;
    font-size:1rem; font-weight:800; color:#fff;
    font-family:'Space Grotesk',sans-serif;
    box-shadow: 0 4px 10px rgba(0,176,26,0.3);
}
.greeting-text { min-width:0; }
.greeting-label {
    font-size:0.65rem; text-transform:uppercase; letter-spacing:0.1em;
    color:rgba(0,176,26,0.75); font-weight:700; margin-bottom:0px;
}
.greeting-name {
    font-family:'Space Grotesk',sans-serif;
    font-size:0.95rem; font-weight:700; color:#f1f5f9;
    white-space:nowrap; overflow:hidden; text-overflow:ellipsis; max-width:140px;
}
.greeting-loading {
    display:flex; align-items:center; gap:4px;
}
.greeting-loading span {
    width:5px; height:5px; border-radius:50%;
    background: rgba(0,176,26,0.5);
    animation: dotBounce 1.2s ease-in-out infinite;
}
.greeting-loading span:nth-child(2) { animation-delay:0.15s; }
.greeting-loading span:nth-child(3) { animation-delay:0.30s; }
@keyframes dotBounce {
    0%,60%,100% { transform:translateY(0); opacity:0.5; }
    30%          { transform:translateY(-5px); opacity:1; }
}

/* ── NumPad Stage ── */
.numpad-stage { animation:fadeStage 0.28s ease; }
@keyframes fadeStage { from{opacity:0;transform:translateY(5px)} to{opacity:1;transform:none} }

.step-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}
.step-title-container {
    flex: 1;
    display: flex;
    align-items: center;
}
.step-badge {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
    margin-left: 12px;
}
.step-label { display: none; }
.step-title {
    font-family:'Space Grotesk',sans-serif; font-size:1.12rem;
    color:var(--text); text-align:left; margin:0;
    transition:all 0.3s;
}

/* Display */
.num-display {
    background: rgba(0,0,0,0.38);
    border: 1.5px solid var(--border);
    border-radius:12px; padding:10px 14px;
    font-size:1.4rem; letter-spacing:0.18em;
    text-align:center; min-height:48px;
    color:var(--text); font-weight:700;
    margin-bottom:4px;
    transition: border-color 0.2s, box-shadow 0.2s;
    display:flex; align-items:center; justify-content:center;
    font-family: monospace;
    overflow:hidden;
}
.num-display.active   { border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-glow); }
.num-display.error    { border-color:var(--danger);  box-shadow:0 0 0 3px rgba(244,63,94,0.2); animation:shake 0.4s; }
@keyframes shake {
    0%,100%{transform:translateX(0)}
    20%{transform:translateX(-6px)}
    40%{transform:translateX(6px)}
    60%{transform:translateX(-4px)}
    80%{transform:translateX(4px)}
}
.num-display .placeholder { color:var(--muted); font-size:0.88rem; font-family:'Outfit',sans-serif; letter-spacing:0; font-weight:400; }

/* Documento agrupado en bloques de 4 (ej: 2727 2727) */
.num-display.grouped {
    font-size:1.15rem;
    letter-spacing:0.06em;
    font-variant-numeric: tabular-nums;
}

/* PIN dots */
.pin-dots { display:flex; justify-content:center; gap:11px; min-height:22px; margin-bottom:5px; }
.pin-dot {
    width:13px; height:13px; border-radius:50%;
    background:var(--pin-dot); transition:all 0.2s;
}
.pin-dot.filled {
    background:var(--pin-filled);
    box-shadow:0 0 8px rgba(0,176,26,0.5);
    transform:scale(1.15);
}
.pin-dot.error-dot { background:var(--danger); box-shadow:0 0 8px rgba(244,63,94,0.4); }

.hint-text { font-size:0.75rem; color:var(--muted); text-align:center; margin-bottom:12px; min-height:16px; transition:color 0.2s; }
.hint-text.hint-ok      { color:var(--accent); }
.hint-text.hint-warning { color:var(--warning); }

/* Numpad */
.numpad { display:grid; grid-template-columns:repeat(3,1fr); gap:8px; margin-bottom:10px; }
.numpad-key {
    background: var(--numpad-bg);
    border: 1px solid var(--border);
    border-radius:12px; padding:12px 0;
    font-size:1.25rem; font-weight:700;
    color:var(--text); cursor:pointer;
    transition: all 0.14s cubic-bezier(0.4,0,0.2,1);
    font-family:'Space Grotesk',sans-serif;
    user-select:none; -webkit-user-select:none;
    display:flex; align-items:center; justify-content:center;
    position:relative; overflow:hidden;
}
.numpad-key:hover {
    background:var(--numpad-hover);
    border-color:rgba(0,176,26,0.38);
    transform:translateY(-2px);
    box-shadow:0 4px 12px rgba(0,176,26,0.18);
}
.numpad-key:active { transform:scale(0.93); background:rgba(0,176,26,0.22); }
.numpad-key.zero   { grid-column:span 2; }
.numpad-key.del    { background:rgba(244,63,94,0.07); border-color:rgba(244,63,94,0.18); color:#fb7185; }
.numpad-key.del:hover { background:rgba(244,63,94,0.18); border-color:rgba(244,63,94,0.38); }

/* Ripple */
.ripple {
    position:absolute; border-radius:50%;
    background:rgba(0,176,26,0.28); transform:scale(0);
    animation:rippleAnim 0.5s linear; pointer-events:none;
}
@keyframes rippleAnim { to { transform:scale(4); opacity:0; } }

/* ── Buttons ── */
.btn-next {
    width:100%; padding:12px; border-radius:12px;
    font-family:'Outfit',sans-serif; font-size:0.92rem; font-weight:700;
    cursor:pointer; transition:all 0.2s ease;
    background: rgba(16, 185, 129, 0.1); border: 1px solid rgba(16, 185, 129, 0.5); color: #10b981;
    text-transform:uppercase; letter-spacing:1px; margin-bottom:8px;
    display: block !important; box-shadow:none;
}
.btn-next:hover:not(:disabled) { background:rgba(16, 185, 129, 0.2); transform:translateY(-1px); }
.btn-next:active:not(:disabled) { transform:scale(0.98); }
.btn-next:disabled { opacity:0.38; cursor:not-allowed; }

.btn-back {
    width:100%; padding:10px; border:1px solid var(--border); border-radius:12px;
    font-family:'Outfit',sans-serif; font-size:0.85rem; font-weight:600;
    cursor:pointer; transition:all 0.2s;
    background:transparent; color:var(--muted);
    display: block !important;
}
.btn-back:hover { background:rgba(255,255,255,0.05); color:var(--text); }

/* ── Classic tab ── */
.input-group { margin-bottom:14px; }
.input-label { display:block; font-size:0.75rem; font-weight:600; color:var(--muted); margin-bottom:5px; text-transform:uppercase; letter-spacing:0.08em; }
.classic-input {
    width:100%; background:rgba(0,0,0,0.3);
    border:1.5px solid var(--border); color:#fff;
    font-family:'Outfit',sans-serif; font-size:0.95rem;
    padding:11px 15px; border-radius:12px; transition:all 0.22s;
}
.classic-input::placeholder { color:rgba(255,255,255,0.2); }
.classic-input:focus { outline:none; border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-glow); background:rgba(0,0,0,0.5); }
.btn-login {
    width:100%; padding:15px; border-radius:13px;
    font-family:'Outfit',sans-serif; font-size:0.97rem; font-weight:700;
    cursor:pointer; transition:all 0.2s ease;
    background: rgba(16, 185, 129, 0.1); border: 1px solid rgba(16, 185, 129, 0.5); color: #10b981;
    text-transform:uppercase; letter-spacing:1px; margin-top:2px;
    position:relative; overflow:hidden; box-shadow:none;
}
.btn-login::before {
    content:''; position:absolute; top:0; left:-100%; width:100%; height:100%;
    background:linear-gradient(90deg,transparent,rgba(16, 185, 129, 0.14),transparent);
    transition:left 0.5s;
}
.btn-login:hover { background:rgba(16, 185, 129, 0.2); transform:translateY(-1px); }
.btn-login:hover::before { left:100%; }

/* ── Footer link ── */
.footer-link {
    display:flex; align-items:center; justify-content:center; gap:8px;
    padding:13px 16px; border-radius:13px;
    border:1px solid var(--border); background:rgba(255,255,255,0.02);
    color:var(--muted); text-decoration:none; font-size:0.88rem; font-weight:500;
    margin-top:18px; transition:all 0.2s;
}
.footer-link:hover { background:rgba(255,255,255,0.07); color:var(--text); border-color:rgba(255,255,255,0.14); }

.hidden { display:none !important; }