@font-face {
    font-family: Inter;
    src: url("./Inter-VariableFont_opsz,wght.ttf");
}

:root {
    --page-bg: #f4f8fb;
    --surface: rgba(255, 255, 255, 0.95);
    --surface-border: rgba(0, 78, 109, 0.12);
    --primary: #006d95;
    --primary-dark: #004d6d;
    --accent: #17a9c7;
    --text: #102430;
    --muted: #5b6b75;
    --error-bg: #fff1f1;
    --error-border: #ef9a9a;
    --error-text: #8f2020;
    --shadow: 0 24px 60px rgba(9, 40, 56, 0.12);
    --radius-lg: 24px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --transition: 180ms ease;
}

* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
}

body {
    margin: 0;
    font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--text);
    background: radial-gradient(circle at top left, rgba(23, 169, 199, 0.16), transparent 33%),
    radial-gradient(circle at bottom right, rgba(0, 109, 149, 0.18), transparent 34%),
    linear-gradient(180deg, #eef6fa 0%, var(--page-bg) 100%);
}

.page-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-card {
    width: min(100%, 480px);
    background: var(--surface);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
    backdrop-filter: blur(14px);
}

.brand-strip {
    height: 8px;
    background: linear-gradient(90deg, var(--primary-dark), var(--accent));
}

.card-header {
    padding: 36px 36px 12px;
}

.eyebrow {
    display: inline-block;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(0, 109, 149, 0.08);
    color: var(--primary-dark);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

h1 {
    margin: 18px 0 12px;
    font-size: clamp(1.8rem, 4vw, 2.3rem);
    line-height: 1.12;
}

.lead,
.footer-note,
.hint {
    color: var(--muted);
}

.lead {
    margin: 0;
    line-height: 1.6;
}

.login-form {
    padding: 20px 36px 10px;
}

.field-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.95rem;
    font-weight: 600;
}

input {
    width: 100%;
    border: 1px solid rgba(16, 36, 48, 0.16);
    border-radius: var(--radius-md);
    padding: 15px 16px;
    font: inherit;
    color: var(--text);
    background: #fff;
    transition: border-color var(--transition), box-shadow var(--transition), background-color var(--transition);
}

input::placeholder {
    color: #93a3ad;
}

input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(23, 169, 199, 0.14);
}

input[readonly] {
    background: #f7fafc;
}

.hint {
    margin: 8px 0 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

.alert {
    margin: 0 36px;
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
}

.alert-error {
    background: var(--error-bg);
    border: 1px solid var(--error-border);
    color: var(--error-text);
}

.actions {
    display: flex;
    gap: 12px;
    margin-top: 26px;
    flex-wrap: wrap;
    justify-content: right;
}

.btn {
    border: 0;
    border-radius: 999px;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), opacity var(--transition);
}

.btn:focus-visible {
    outline: 3px solid rgba(23, 169, 199, 0.4);
    outline-offset: 2px;
}

.btn:disabled {
    cursor: wait;
    opacity: 0.85;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-width: 160px;
    padding: 14px 22px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 12px 24px rgba(0, 77, 109, 0.24);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-1px);
}

.btn-secondary {
    padding: 14px 18px;
    background: rgba(0, 109, 149, 0.08);
    color: var(--primary-dark);
}

.spinner {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.45);
    border-top-color: #fff;
    animation: spin 0.8s linear infinite;
    display: none;
}

.btn.is-loading .spinner {
    display: inline-block;
}

.btn.is-loading .btn-label {
    opacity: 0.9;
}

.footer-note {
    margin: 0;
    padding: 25px 36px 34px;
    font-size: 0.9rem;
    line-height: 1.55;
}

.noscript-message {
    position: fixed;
    left: 16px;
    right: 16px;
    bottom: 16px;
    z-index: 10;
    padding: 12px 16px;
    background: #fff3cd;
    color: #664d03;
    border: 1px solid #ffecb5;
    border-radius: 12px;
    font: 600 0.95rem/1.4 "Inter", system-ui, sans-serif;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 640px) {
    .page-shell {
        padding: 16px;
    }

    .card-header,
    .login-form,
    .footer-note {
        padding-left: 22px;
        padding-right: 22px;
    }

    .alert {
        margin-left: 22px;
        margin-right: 22px;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
    }
}