/* ===== Auth pages — simple cards on a rich background ===== */
:root {
    --auth-gold: #895129;
    --auth-gold-light: #D4A574;
    --auth-gold-bright: #E8C39A;
    --auth-cyan: #00D4FF;
}

/* ===== Background layers ===== */
.auth-body {
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    background:
        radial-gradient(900px 500px at 85% -10%, rgba(137, 81, 41, 0.28), transparent 60%),
        radial-gradient(800px 500px at -10% 110%, rgba(0, 212, 255, 0.1), transparent 55%),
        var(--bg);
}

.auth-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.4;
    pointer-events: none;
    z-index: 0;
    will-change: transform;
}

.auth-orb-1 {
    width: 380px;
    height: 380px;
    top: -120px;
    right: -80px;
    background: radial-gradient(circle, rgba(212, 165, 116, 0.5), transparent 70%);
}

.auth-orb-2 {
    width: 340px;
    height: 340px;
    bottom: -100px;
    left: -120px;
    background: radial-gradient(circle, rgba(137, 81, 41, 0.5), transparent 70%);
}

.auth-orb-3 {
    width: 240px;
    height: 240px;
    top: 40%;
    right: 8%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.14), transparent 70%);
}

#authParticles {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

/* ===== Shell (centers when short, scrolls when tall) ===== */
.auth-shell {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 460px;
    margin: auto;
    padding: 3rem 1.25rem;
}

/* ===== Simple card ===== */
.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border-strong);
    border-radius: 22px;
    box-shadow: var(--shadow-lg), 0 0 60px rgba(137, 81, 41, 0.1);
    padding: 2.5rem 2.25rem;
    position: relative;
    overflow: hidden;
    animation: authIn 0.6s ease both;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--grad-gold);
}

@keyframes authIn {
    0% { opacity: 0; transform: translateY(16px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* ===== Logo ===== */
.auth-logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1.8rem;
    position: relative;
    z-index: 1;
}

.auth-logo .brand-icon {
    width: 60px;
    height: 60px;
    border-radius: 18px;
    font-size: 1.6rem;
    margin-bottom: 0.9rem;
    background: linear-gradient(135deg, var(--auth-gold), var(--auth-gold-light));
    color: #0A0A0F;
    box-shadow: 0 12px 30px rgba(137, 81, 41, 0.4);
}

.auth-logo .brand-name {
    font-size: 1.4rem;
    font-family: 'Orbitron', sans-serif;
    letter-spacing: 0.06em;
    color: var(--text-primary);
}

.auth-logo .brand-name span { color: var(--auth-gold-light); }

.auth-logo .tagline {
    font-size: 0.74rem;
    color: var(--text-muted);
    margin-top: 0.35rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

/* ===== Title ===== */
.auth-title {
    text-align: center;
    margin-bottom: 1.7rem;
    position: relative;
    z-index: 1;
}

.auth-title h2 {
    font-size: 1.45rem;
    font-family: 'Orbitron', sans-serif;
    font-weight: 800;
    letter-spacing: 0.04em;
}

.auth-title p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 0.4rem;
}

/* ===== Form ===== */
.auth-form {
    position: relative;
    z-index: 1;
}

.auth-form .form-group {
    margin-bottom: 1.1rem;
}

.auth-form .form-control {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 13px;
    padding: 0.8rem 1.05rem;
    color: var(--text-primary);
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.auth-form .form-control:focus {
    border-color: rgba(212, 165, 116, 0.6);
    box-shadow: 0 0 0 3px rgba(137, 81, 41, 0.18);
}

.auth-form .form-label {
    color: var(--text-secondary);
    font-weight: 600;
}

.auth-form .btn {
    margin-top: 0.6rem;
}

/* ===== Alt / foot ===== */
.auth-alt {
    text-align: center;
    margin-top: 1.4rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    position: relative;
    z-index: 1;
}

.auth-alt a {
    color: var(--auth-gold-light);
    text-decoration: none;
    font-weight: 600;
}

.auth-alt a:hover {
    color: var(--auth-gold-bright);
    text-decoration: underline;
}

.auth-security-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    font-size: 0.74rem;
    color: var(--text-muted);
    margin-top: 1.2rem;
}

.auth-foot {
    text-align: center;
    margin-top: 1.4rem;
    font-size: 0.76rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.auth-bonus {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.85rem 1rem;
    border-radius: 13px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.28);
    font-size: 0.82rem;
    color: var(--emerald-light);
    margin-bottom: 1.5rem;
}

/* ===== Errors (only visible on errors) ===== */
.error-list {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 13px;
    padding: 0.9rem 1rem;
    margin-bottom: 1.4rem;
    font-size: 0.82rem;
    color: #F87171;
    list-style: none;
}

.error-list li { display: flex; gap: 0.5rem; align-items: baseline; padding: 2px 0; }

/* Password strength meter */
.strength-meter {
    height: 5px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.08);
    margin-top: 0.5rem;
    overflow: hidden;
}

.strength-meter span {
    display: block;
    height: 100%;
    width: 0%;
    border-radius: 10px;
    transition: all 0.3s ease;
    background: linear-gradient(90deg, var(--red), var(--amber), var(--emerald));
}

/* Real-time validation */
.form-control.input-invalid {
    border-color: rgba(239, 68, 68, 0.7);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.12);
}

.form-error { display: block; }

/* ===== OTP page ===== */
.auth-title-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 58px;
    height: 58px;
    border-radius: 18px;
    font-size: 1.5rem;
    background: linear-gradient(135deg, var(--auth-gold), var(--auth-gold-light));
    color: #0A0A0F;
    box-shadow: 0 10px 26px rgba(137, 81, 41, 0.35);
    margin-bottom: 1rem;
}

.otp-email-box {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    padding: 0.8rem 1rem;
    border-radius: 13px;
    background: rgba(59, 130, 246, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.25);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--blue-light);
    margin-bottom: 1.4rem;
    word-break: break-all;
}

.otp-inputs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    justify-content: center;
}

.otp-digit {
    text-align: center;
    font-size: 1.3rem;
    font-weight: 800;
    padding: 0;
    letter-spacing: 0;
    width: 3.1rem;
    height: 3.6rem;
    border-radius: 13px;
    border: 1px solid var(--border-strong);
    background: var(--bg-input);
    font-variant-numeric: tabular-nums;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.otp-digit:focus {
    border-color: rgba(212, 165, 116, 0.75);
    box-shadow: 0 0 0 3px rgba(137, 81, 41, 0.18);
    transform: translateY(-2px);
}

.otp-digit.filled {
    border-color: rgba(212, 165, 116, 0.45);
}

.otp-resend {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.25rem;
    flex-wrap: wrap;
}

.otp-countdown {
    font-variant-numeric: tabular-nums;
    color: var(--text-muted);
}

/* ===== Light theme overrides ===== */
[data-theme="light"] .auth-orb { opacity: 0.3; }

[data-theme="light"] .strength-meter {
    background: rgba(26, 26, 46, 0.1);
}

/* ===== Email prompt modal ===== */
#emailPromptInput { margin-top: 1.2rem; text-align: center; }
#emailPromptError { min-height: 1.2rem; }

@media (max-width: 420px) {
    .otp-inputs { gap: 0.3rem; }
    .otp-digit { font-size: 1.05rem; }
    .auth-card { padding: 2rem 1.5rem; }
}

@media (prefers-reduced-motion: reduce) {
    .auth-card { animation: none; }
}