/* OptimalTREND login page-specific styles.
   Depends on optimal-design-system.css for tokens.
   Premium pre-auth aesthetic restored 2026-05-23 per director directive:
   cinematic gradient backdrop, subtle grid pattern, ambient orb,
   card-entry animation. All colours drawn from Optimal palette tokens. */

.ot-login-body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--navy);
    color: var(--ink);
    font-family: "Helvetica Neue", Arial, sans-serif;
    position: relative;
    overflow-x: hidden;
}

/* Cinematic gradient backdrop layered behind everything. */
.ot-login-body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    background:
        radial-gradient(ellipse 120% 80% at 25% 20%, rgba(0,168,203,0.08) 0%, transparent 60%),
        radial-gradient(ellipse 100% 100% at 75% 80%, rgba(0,47,101,0.35) 0%, transparent 50%),
        linear-gradient(165deg, var(--navy-dark) 0%, var(--navy) 70%, var(--navy-dark) 100%);
    pointer-events: none;
}

/* Subtle grid overlay - sophistication signal. */
.ot-login-body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
    background-size: 80px 80px;
    pointer-events: none;
}

/* Ambient floating orb - positioned as a fixed accent layer. */
.ot-login-shell::before {
    content: "";
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,168,203,0.06) 0%, transparent 70%);
    top: -10%;
    right: -8%;
    z-index: 0;
    animation: ot-login-drift 20s ease-in-out infinite;
    pointer-events: none;
}

@keyframes ot-login-drift {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-40px, 30px); }
}

@keyframes ot-login-card-enter {
    from {
        opacity: 0;
        transform: translateY(24px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.ot-login-shell {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 24px;
    position: relative;
    z-index: 1;
}

.ot-login-card {
    width: 100%;
    max-width: 440px;
    background: var(--white);
    box-shadow:
        0 0 0 1px rgba(255,255,255,0.06),
        0 24px 80px rgba(0,10,30,0.45),
        0 8px 24px rgba(0,10,30,0.20);
    overflow: hidden;
    position: relative;
    z-index: 2;
    animation: ot-login-card-enter 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.ot-login-card__header {
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 50%, var(--navy-dark) 100%);
    color: var(--white);
    padding: 32px 36px 28px;
    text-align: center;
    border-bottom: 3px solid var(--teal);
    position: relative;
}

.ot-login-card__logo {
    height: 32px;
    margin-bottom: 16px;
}

.ot-login-card__header .ot-eyebrow {
    color: var(--teal-light);
    margin: 0;
}

.ot-login-card__header h1 {
    font-family: Georgia, "Times New Roman", serif;
    font-size: 26px;
    color: var(--white);
    margin: 8px 0 4px;
    font-weight: 400;
}

.ot-login-card__subtitle {
    font-size: 13px;
    color: var(--teal-light);
    margin: 0;
}

.ot-login-card__body {
    padding: 28px 36px 32px;
}

.ot-login-field {
    margin-bottom: 18px;
}

.ot-login-field label {
    display: block;
    font-size: 11px;
    color: var(--ink-4);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 6px;
    font-weight: 700;
}

.ot-login-field input {
    width: 100%;
    border: 1px solid var(--rule);
    padding: 11px 12px;
    color: var(--ink);
    background: var(--white);
    font-size: 14px;
    font-family: inherit;
}

.ot-login-field input:focus {
    outline: 2px solid var(--teal);
    outline-offset: -1px;
}

.ot-login-error {
    display: none;
    background: var(--paper);
    border-left: 3px solid var(--navy);
    padding: 10px 12px;
    margin-bottom: 18px;
    color: var(--ink-2);
    font-size: 13px;
}

.ot-login-error.show {
    display: block;
}

.ot-login-submit {
    width: 100%;
    background: var(--navy);
    color: var(--white);
    border: 0;
    padding: 12px 0;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    font-family: inherit;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.ot-login-submit:hover {
    background: var(--navy-dark);
}

.ot-login-submit:disabled,
.ot-login-submit.loading {
    background: var(--ink-4);
    cursor: not-allowed;
}

.ot-login-card__legal {
    text-align: center;
    margin-top: 20px;
    margin-bottom: 0;
    font-size: 11px;
    color: var(--ink-4);
}

.ot-login-card__legal a {
    color: var(--teal);
    text-decoration: none;
}

@media (max-width: 480px) {
    .ot-login-shell { padding: 0; align-items: stretch; }
    .ot-login-card { max-width: none; box-shadow: none; }
    .ot-login-card__header { padding: 28px 24px 22px; }
    .ot-login-card__body { padding: 24px; }
}