/* Sign in, create account, reset. Calm single-column cards. Also shared form bits used inside the app. */

.auth-header { position: sticky; top: 0; z-index: 50; }
.auth-header .nav-bar { min-height: 64px; }
.auth-main { min-height: calc(100vh - 64px - 74px); min-height: calc(100dvh - 64px - 74px); display: grid; place-items: center; padding: clamp(16px, 5vw, 56px) var(--gutter) 32px; }
.auth-stage { width: 100%; max-width: 440px; display: grid; gap: 14px; }
.auth-card { padding: clamp(24px, 6vw, 36px); display: grid; gap: 22px; border-radius: var(--r-xl); box-shadow: var(--highlight), var(--shadow-2); }
.auth-step { display: grid; gap: 20px; animation: step-in 0.6s var(--spring) both; }
@keyframes step-in { from { opacity: 0; transform: translateY(14px) scale(0.985); } }
.auth-icon { width: 52px; height: 52px; border-radius: 16px; display: grid; place-items: center; color: var(--accent-ink); background: linear-gradient(145deg, var(--accent), var(--accent-2)); box-shadow: 0 10px 28px -8px var(--glow-a); }
.auth-icon .icon { width: 26px; height: 26px; }
.auth-icon.soft { background: var(--accent-soft); color: var(--accent-text); box-shadow: none; }
.auth-icon.good { background: var(--read-bg); color: var(--read); box-shadow: none; }
.auth-title { font-family: var(--font-display); font-size: clamp(1.6rem, 4vw, 1.95rem); line-height: 1.16; letter-spacing: -0.025em; font-weight: 700; }
.auth-title:focus { outline: none; }
.auth-sub { color: var(--text-2); margin-top: 4px; }
.auth-sub strong { color: var(--text); font-weight: 650; overflow-wrap: anywhere; }
.auth-form { display: grid; gap: 18px; }
.auth-links { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 16px; font-size: 0.93rem; color: var(--text-2); }
.auth-links.center { justify-content: center; text-align: center; }
.auth-alt { text-align: center; color: var(--text-2); font-size: 0.95rem; }
.fineprint { font-size: 0.85rem; color: var(--text-3); }
.fineprint a { color: var(--text-2); }

.link-btn { background: none; border: 0; padding: 4px 2px; color: var(--accent-text); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; border-radius: 6px; min-height: 32px; }
.link-btn:hover { text-decoration-thickness: 2px; }
.link-btn[disabled] { opacity: 0.5; cursor: wait; }

.form-alert { display: flex; align-items: flex-start; gap: 10px; padding: 12px 14px; border-radius: 14px; font-size: 0.93rem; font-weight: 550; color: var(--danger); background: var(--danger-bg); border: 1px solid var(--danger-line); animation: step-in 0.4s var(--spring) both; }
.form-alert .icon { margin-top: 2px; }
.form-alert[data-kind="info"] { color: var(--text); background: var(--accent-soft); border-color: transparent; }
.form-alert[data-kind="info"] .icon { color: var(--accent-text); }

.pw-toggle { color: var(--text-3); }
.pw-meter { display: grid; gap: 6px; margin-top: 2px; }
.pw-bars { display: grid; grid-template-columns: repeat(4, 1fr); gap: 5px; }
.pw-bars i { height: 5px; border-radius: 3px; background: var(--line-strong); transition: background-color 0.35s var(--ease); }
.pw-meter[data-state="bad"] .pw-bars i:first-child { background: var(--danger); }
.pw-meter[data-score="1"][data-state="ok"] .pw-bars i:nth-child(-n+1) { background: var(--write); }
.pw-meter[data-score="2"] .pw-bars i:nth-child(-n+2) { background: var(--accent-2); }
.pw-meter[data-score="3"] .pw-bars i:nth-child(-n+3) { background: var(--read); }
.pw-meter[data-score="4"] .pw-bars i { background: var(--read); }
.pw-msg { font-size: 0.85rem; color: var(--text-3); min-height: 1.3em; }
.pw-meter[data-state="bad"] .pw-msg { color: var(--text-2); }

.code-input { height: 68px; font-family: var(--mono); font-size: 2rem; font-weight: 600; letter-spacing: 0.5em; text-indent: 0.5em; text-align: center; border-radius: 18px; }
.code-input::placeholder { letter-spacing: 0.5em; opacity: 0.35; }
.code-input.shake { animation: shake 0.45s var(--ease); }
@keyframes shake { 20% { transform: translateX(-7px); } 40% { transform: translateX(6px); } 60% { transform: translateX(-4px); } 80% { transform: translateX(2px); } }
.resend { font-size: 0.9rem; text-align: center; }

.mock-banner { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 6px 10px; padding: 10px 14px; border-radius: 16px; font-size: 0.85rem; color: var(--write); background: var(--write-bg); border: 1px dashed var(--write-line); text-align: center; }
.mock-banner code { background: transparent; border-color: var(--write-line); color: inherit; }

.auth-foot { padding: 20px var(--gutter) 28px; text-align: center; font-size: 0.85rem; }
.auth-foot nav { display: flex; flex-wrap: wrap; gap: 6px 20px; justify-content: center; }
.auth-foot a { color: var(--text-3); text-decoration: none; }
.auth-foot a:hover { color: var(--text); text-decoration: underline; }

.btn .spinner { border-color: rgba(255, 255, 255, 0.35); border-top-color: #fff; }
.btn-ghost .spinner, .btn-quiet .spinner, .btn-danger .spinner { border-color: var(--line-strong); border-top-color: var(--accent-text); }

@media (prefers-reduced-motion: reduce) { .auth-step, .form-alert { animation: none; } .code-input.shake { animation: none; } }

.invite-facts { display: grid; gap: 10px; padding: 14px 16px; border-radius: 16px; background: var(--sunken); border: 1px solid var(--line); }
.invite-facts > div { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; }
.invite-facts .cap { text-transform: capitalize; }

/* ---------- design v2 overrides (docs/DESIGN-DIRECTION.md): no gradients, no glow, no glass, hairlines ---------- */
.auth-icon { background: none; color: var(--text-2); border: 1px solid var(--line); border-radius: var(--r-m); width: 44px; height: 44px; }
.auth-card, .auth-step, .auth-panel { box-shadow: none !important; }
.auth-title { font-family: var(--font-display); font-weight: 560; letter-spacing: -0.025em; }
.invite-facts { border-radius: var(--r-m); background: transparent; }