/* =========================================================================
   ImAnswer — AUTH (logowanie / rejestracja)  "IRIS / AURORA"
   Wspolny, samodzielny arkusz dla login.php i register.php.
   ========================================================================= */
@import url('https://fonts.googleapis.com/css2?family=Sora:wght@600;700;800&family=Space+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@500&display=swap');

:root {
    --bg: #08080d;
    --txt: #f1f0fb;
    --txt2: #b3b1cf;
    --txt3: #7b7896;
    --iris: #8b5cf6;
    --iris2: #a78bfa;
    --cyan: #22d3ee;
    --line: rgba(255,255,255,.09);
    --line2: rgba(255,255,255,.16);
    --grad: linear-gradient(120deg, #8b5cf6, #6366f1 45%, #22d3ee);
    --glass: rgba(255,255,255,.035);
    --font: 'Space Grotesk', system-ui, -apple-system, sans-serif;
    --font-brand: 'Sora', 'Space Grotesk', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; max-width: 100%; overflow-x: hidden; }
.auth-body {
    min-height: 100vh; background: var(--bg); color: var(--txt);
    font-family: var(--font); position: relative; overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ---- AURORA tlo ---- */
.aurora { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.aurora span { position: absolute; border-radius: 50%; filter: blur(70px); opacity: .55; }
.aurora .a1 { width: 52vw; height: 52vw; left: -12vw; top: -14vw; background: radial-gradient(circle, rgba(139,92,246,.7), transparent 65%); animation: drift1 24s ease-in-out infinite alternate; }
.aurora .a2 { width: 44vw; height: 44vw; right: -10vw; top: -8vw; background: radial-gradient(circle, rgba(34,211,238,.5), transparent 65%); animation: drift2 28s ease-in-out infinite alternate; }
.aurora .a3 { width: 50vw; height: 50vw; left: 25vw; bottom: -22vw; background: radial-gradient(circle, rgba(99,102,241,.55), transparent 65%); animation: drift3 30s ease-in-out infinite alternate; }
.aurora .grain { position: absolute; inset: 0; opacity: .5; filter: none;
    background-image: radial-gradient(rgba(255,255,255,.04) 1px, transparent 1px); background-size: 3px 3px; mix-blend-mode: screen; }
@keyframes drift1 { to { transform: translate(8vw, 6vw) scale(1.15); } }
@keyframes drift2 { to { transform: translate(-7vw, 9vw) scale(1.2); } }
@keyframes drift3 { to { transform: translate(-6vw, -8vw) scale(1.1); } }
@media (prefers-reduced-motion: reduce) { .aurora span { animation: none !important; } }

/* ---- UKLAD ---- */
.auth-stage {
    position: relative; z-index: 1;
    min-height: 100vh; width: min(1080px, 92vw); margin: 0 auto;
    display: grid; grid-template-columns: 1.05fr 440px;
    align-items: center; align-content: center; justify-content: center; gap: 48px;
    padding: 40px 0;
}

/* ---- LEWA: marka ---- */
.auth-brand { min-width: 0; }
.brand-word { font-family: var(--font-brand); font-weight: 800; font-size: 1.5rem; letter-spacing: -.01em; color: var(--txt); text-decoration: none; }
.brand-word span { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.brand-head { font-family: var(--font-brand); font-weight: 800; font-size: clamp(2rem, 4vw, 3.1rem); line-height: 1.05; letter-spacing: -.03em; margin: 28px 0 18px; }
.brand-sub { color: var(--txt2); font-size: 1.02rem; line-height: 1.6; max-width: 460px; margin: 0 0 30px; }
.brand-feats { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 16px; }
.brand-feats li { display: flex; align-items: center; gap: 14px; }
.bf-ic { width: 44px; height: 44px; flex: 0 0 auto; display: inline-flex; align-items: center; justify-content: center;
    border-radius: 14px; background: var(--glass); border: 1px solid var(--line2); color: var(--iris2); }
.brand-feats b { display: block; font-size: .95rem; font-weight: 600; color: var(--txt); }
.brand-feats small { display: block; font-size: .82rem; color: var(--txt3); margin-top: 1px; }

/* ---- PRAWA: karta ---- */
.auth-card {
    position: relative; width: 100%; padding: 34px 32px 30px;
    background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
    border: 1px solid var(--line2); border-radius: 24px;
    -webkit-backdrop-filter: blur(20px) saturate(150%); backdrop-filter: blur(20px) saturate(150%);
    box-shadow: 0 40px 90px -30px rgba(0,0,0,.7), 0 0 80px -50px rgba(139,92,246,.7), inset 0 1px 0 rgba(255,255,255,.1);
}
.card-brand-mobile { display: none; font-family: var(--font-brand); font-weight: 800; font-size: 1.3rem; text-align: center; margin-bottom: 14px; }
.card-brand-mobile span { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.card-title { font-family: var(--font-brand); font-weight: 700; font-size: 1.5rem; letter-spacing: -.02em; margin: 0; }
.card-sub { color: var(--txt3); font-size: .9rem; margin: 6px 0 22px; }

.auth-form { display: block; }
.fld-label { display: block; font-size: .74rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; color: var(--txt3); margin: 0 0 8px 2px; }
.fld-label .opt { text-transform: none; letter-spacing: 0; font-weight: 500; opacity: .7; }
.fld {
    display: flex; align-items: center; gap: 11px; padding: 0 14px; margin-bottom: 16px;
    background: rgba(8,8,14,.5); border: 1px solid var(--line); border-radius: 14px;
    transition: border-color .18s, box-shadow .18s, background .18s;
}
.fld:focus-within { border-color: rgba(139,92,246,.6); background: rgba(14,14,22,.6); box-shadow: 0 0 0 3px rgba(139,92,246,.16); }
.fld > svg { color: var(--iris2); opacity: .85; flex: 0 0 auto; }
.fld:focus-within > svg { color: var(--cyan); }
.fld input, .fld textarea {
    flex: 1; min-width: 0; background: none; border: none; outline: none;
    color: var(--txt); font-family: var(--font); font-size: .96rem; padding: 14px 0; letter-spacing: .01em; resize: none;
}
.fld textarea { padding: 12px 0; line-height: 1.5; }
.fld-area { align-items: flex-start; }
.fld input::placeholder, .fld textarea::placeholder { color: rgba(200,200,230,.32); }
.fld-eye { background: none; border: none; padding: 4px; color: var(--txt3); cursor: pointer; display: inline-flex; flex: 0 0 auto; border-radius: 8px; transition: color .15s; }
.fld-eye:hover, .fld-eye.is-on { color: var(--iris2); }
.fld-hint { display: block; font-size: .74rem; color: var(--txt3); margin: -8px 0 16px 2px; }
.fld-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.fld-row .fld { margin-bottom: 8px; }

.auth-btn {
    width: 100%; margin-top: 8px; padding: 15px; border: none; border-radius: 14px; cursor: pointer;
    display: flex; align-items: center; justify-content: center; gap: 9px;
    font-family: var(--font); font-weight: 700; font-size: .95rem; letter-spacing: .02em; color: #fff;
    background: var(--grad); background-size: 160% 100%;
    box-shadow: 0 16px 36px -14px rgba(139,92,246,.8), inset 0 1px 0 rgba(255,255,255,.28);
    transition: transform .15s, box-shadow .15s, background-position .4s;
}
.auth-btn:hover { transform: translateY(-2px); background-position: 100% 0; box-shadow: 0 22px 48px -14px rgba(34,211,238,.6), inset 0 1px 0 rgba(255,255,255,.3); }
.auth-btn:active { transform: translateY(0); }

.auth-foot { text-align: center; margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--line); font-size: .88rem; color: var(--txt3); }
.auth-foot a { color: var(--iris2); font-weight: 600; text-decoration: none; margin-left: 7px; }
.auth-foot a:hover { color: var(--cyan); }

.auth-alert {
    display: flex; align-items: center; gap: 9px; padding: 11px 14px; margin-bottom: 18px;
    border-radius: 13px; font-size: .86rem; background: rgba(251,92,125,.12); border: 1px solid rgba(251,92,125,.4); color: #ffc4cf;
}
.auth-alert svg { flex: 0 0 auto; }

/* ---- RESPONSYWNOSC ---- */
@media (max-width: 920px) {
    .auth-stage { grid-template-columns: 1fr; gap: 0; justify-items: center; width: min(440px, 92vw); }
    .auth-brand { display: none; }
    .card-brand-mobile { display: block; }
    .auth-card { width: 100%; }
}
@media (max-width: 420px) {
    .auth-card { padding: 26px 20px 24px; border-radius: 20px; }
    .fld-row { grid-template-columns: 1fr; }
}