:root {
    --pp-primary: #1a5f7a;
    --pp-primary-dark: #134a61;
    --pp-accent: #2d7a5f;
    --pp-accent-light: #e8f4ef;
    --pp-surface: #ffffff;
    --pp-text: #1e293b;
    --pp-text-muted: #64748b;
    --pp-border: #e2e8f0;
    --pp-error: #b91c1c;
    --pp-error-bg: #fef2f2;
    --pp-locked: #92400e;
    --pp-locked-bg: #fffbeb;
    --pp-radius: 10px;
    --pp-shadow: 0 4px 24px rgba(26, 95, 122, 0.10), 0 1px 3px rgba(0, 0, 0, 0.06);
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--pp-text);
    background-color: #f0f5f8;
    background-image:
        linear-gradient(135deg, rgba(26, 95, 122, 0.06) 0%, rgba(45, 122, 95, 0.08) 100%),
        radial-gradient(circle at 20% 80%, rgba(26, 95, 122, 0.07) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(45, 122, 95, 0.06) 0%, transparent 45%);
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(30deg, rgba(26, 95, 122, 0.03) 12%, transparent 12.5%, transparent 87%, rgba(26, 95, 122, 0.03) 87.5%, rgba(26, 95, 122, 0.03) 100%),
        linear-gradient(150deg, rgba(45, 122, 95, 0.03) 12%, transparent 12.5%, transparent 87%, rgba(45, 122, 95, 0.03) 87.5%, rgba(45, 122, 95, 0.03) 100%);
    background-size: 80px 140px;
    pointer-events: none;
    z-index: 0;
}

.login-page {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--pp-surface);
    border-radius: 12px;
    box-shadow: var(--pp-shadow);
    border: 1px solid var(--pp-border);
    padding: 2.25rem 2rem 1.75rem;
}

@media (min-width: 576px) {
    .login-card {
        padding: 2.5rem 2.25rem 2rem;
    }
}

/* STI logo above the sign-in form. */
.login-logo {
    display: block;
    height: 72px;
    width: auto;
    margin: 0 auto 1.25rem;
    border-radius: 6px;
}

.brand-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--pp-primary-dark);
    letter-spacing: -0.02em;
    margin-bottom: 0.25rem;
}

.brand-subtitle {
    font-size: 0.875rem;
    color: var(--pp-text-muted);
    margin-bottom: 1.75rem;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--pp-text);
    margin-bottom: 0.375rem;
}

.form-control {
    border-radius: var(--pp-radius);
    border: 1px solid var(--pp-border);
    padding: 0.625rem 0.875rem;
    font-size: 0.9375rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus {
    border-color: var(--pp-primary);
    box-shadow: 0 0 0 3px rgba(26, 95, 122, 0.15);
}

.form-control.is-invalid {
    border-color: var(--pp-error);
    background-image: none;
    padding-right: 0.875rem;
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.12);
}

.invalid-feedback {
    font-size: 0.8125rem;
    color: var(--pp-error);
    margin-top: 0.375rem;
}

.password-toggle-btn {
    border-radius: 0 var(--pp-radius) var(--pp-radius) 0;
    border: 1px solid var(--pp-border);
    border-left: none;
    background: #f8fafc;
    color: var(--pp-text-muted);
    padding: 0 0.875rem;
}

.password-toggle-btn:hover {
    background: #f1f5f9;
    color: var(--pp-primary);
}

.input-group .form-control {
    border-right: none;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.input-group .form-control.is-invalid + .password-toggle-btn {
    border-color: var(--pp-error);
}

.form-check-input:checked {
    background-color: var(--pp-primary);
    border-color: var(--pp-primary);
}

.form-check-input:focus {
    box-shadow: 0 0 0 3px rgba(26, 95, 122, 0.15);
}

.form-check-label {
    font-size: 0.875rem;
    color: var(--pp-text-muted);
}

.forgot-link {
    font-size: 0.875rem;
    color: var(--pp-primary);
    text-decoration: none;
    font-weight: 500;
}

.forgot-link:hover {
    color: var(--pp-primary-dark);
    text-decoration: underline;
}

.btn-login {
    width: 100%;
    padding: 0.7rem 1rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: var(--pp-radius);
    background-color: var(--pp-primary);
    border: none;
    color: #fff;
    transition: background-color 0.15s ease, opacity 0.15s ease;
    margin-top: 0.5rem;
}

.btn-login:hover:not(:disabled) {
    background-color: var(--pp-primary-dark);
    color: #fff;
}

.btn-login:disabled {
    opacity: 0.85;
    cursor: not-allowed;
}

.btn-login .spinner-border {
    width: 1rem;
    height: 1rem;
    border-width: 2px;
}

.alert-locked {
    display: none;
    background: var(--pp-locked-bg);
    border: 1px solid #fcd34d;
    border-radius: var(--pp-radius);
    color: var(--pp-locked);
    font-size: 0.875rem;
    padding: 0.75rem 1rem;
    margin-bottom: 1.25rem;
    align-items: flex-start;
    gap: 0.5rem;
}

.alert-locked.show {
    display: flex;
}

.card-footer-text {
    text-align: center;
    font-size: 0.75rem;
    color: var(--pp-text-muted);
    margin-top: 1.75rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--pp-border);
    line-height: 1.5;
}


/* ---------------------------------------------------------------
   Forgot Password dialog (email → code → new password)
   --------------------------------------------------------------- */
.reset-modal {
    border-radius: 14px;
    border: 1px solid var(--pp-border);
}

.reset-modal .modal-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--pp-primary-dark);
}

.reset-steps {
    display: flex;
    gap: 0.5rem;
    list-style: none;
    padding: 0;
    margin: 0 0 1.25rem;
    counter-reset: step;
}

.reset-steps li {
    flex: 1;
    font-size: 0.75rem;
    color: var(--pp-text-muted);
    border-top: 3px solid var(--pp-border);
    padding-top: 0.4rem;
    counter-increment: step;
}

.reset-steps li::before {
    content: counter(step) ". ";
}

.reset-steps li.active,
.reset-steps li.done {
    color: var(--pp-primary);
    border-top-color: var(--pp-primary);
    font-weight: 600;
}

.reset-help {
    font-size: 0.875rem;
    color: var(--pp-text-muted);
    margin-bottom: 1rem;
}

.reset-code-input {
    font-size: 1.5rem;
    letter-spacing: 0.5rem;
    text-align: center;
    font-variant-numeric: tabular-nums;
}

.reset-links {
    display: flex;
    justify-content: space-between;
    margin-top: 0.875rem;
}

.reset-links .disabled {
    color: var(--pp-text-muted);
    pointer-events: none;
}

.reset-message {
    display: none;
    margin-top: 1rem;
    font-size: 0.875rem;
    border-radius: var(--pp-radius);
    padding: 0.75rem 1rem;
}

.reset-message.show {
    display: block;
}

.reset-message.error {
    background: var(--pp-error-bg);
    color: var(--pp-error);
    border: 1px solid #fecaca;
}

.reset-message.info {
    background: var(--pp-accent-light);
    color: var(--pp-accent);
    border: 1px solid #b7dfcd;
}

/* Success notice on the login card after a password reset. */
.alert-locked.alert-success-note {
    background: var(--pp-accent-light);
    border-color: #b7dfcd;
    color: var(--pp-accent);
}