:root {
    --color-primary: #1f4f82;
    --color-primary-dark: #10243d;
    --color-accent: #f28c00;
    --color-bg: #f4f6f8;
    --color-surface: #ffffff;
    --color-text: #1a2940;
    --color-muted: #5c6b80;
    --color-border: #d8dee6;
    --color-error-bg: #fde8e8;
    --color-error-text: #9f2d2d;
    --color-info-bg: #eaf2fb;
    --color-info-text: #184a7c;
    --color-success-bg: #e8f6ee;
    --color-success-text: #1d6b43;
    --shadow-lg: 0 24px 50px rgba(16, 36, 61, 0.14);
    --shadow-sm: 0 10px 25px rgba(16, 36, 61, 0.08);
    --radius-lg: 24px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --font-base: "Trebuchet MS", "Segoe UI", sans-serif;
}

* {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    font-family: var(--font-base);
    color: var(--color-text);
    background:
        radial-gradient(circle at top left, rgba(242, 140, 0, 0.12), transparent 34%),
        radial-gradient(circle at bottom right, rgba(31, 79, 130, 0.15), transparent 32%),
        linear-gradient(145deg, #eef2f7 0%, var(--color-bg) 48%, #edf3fa 100%);
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover,
a:focus {
    color: var(--color-accent);
}

.page-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 32px 18px;
}

.page-shell-panel {
    padding: 40px 18px;
}

.auth-card,
.panel-card {
    width: min(100%, 460px);
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.65);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 34px 30px;
    backdrop-filter: blur(10px);
}

.panel-card {
    width: min(100%, 720px);
}

.brand-block {
    text-align: center;
    margin-bottom: 24px;
}

.brand-logo,
.brand-fallback {
    width: 92px;
    height: 92px;
    margin: 0 auto 18px;
    border-radius: 22px;
}

.brand-logo {
    display: block;
    object-fit: contain;
    background: linear-gradient(160deg, rgba(31, 79, 130, 0.07), rgba(242, 140, 0, 0.08));
    padding: 14px;
}

.brand-fallback {
    display: none;
    place-items: center;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    color: var(--color-surface);
    background: linear-gradient(150deg, var(--color-primary), var(--color-primary-dark));
    box-shadow: var(--shadow-sm);
}

.brand-fallback-visible {
    display: grid;
}

.eyebrow {
    margin: 0 0 8px;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 0.77rem;
    font-weight: 700;
    color: var(--color-accent);
}

h1 {
    margin: 0 0 10px;
    font-size: clamp(1.9rem, 2vw, 2.3rem);
    line-height: 1.1;
    color: var(--color-primary-dark);
}

.subtitle,
.panel-copy,
.card-footer {
    margin: 0;
    color: var(--color-muted);
}

.subtitle {
    font-size: 0.98rem;
    line-height: 1.5;
}

.panel-copy {
    margin-top: 14px;
    font-size: 1rem;
    line-height: 1.7;
}

.auth-form {
    display: grid;
    gap: 14px;
    margin-top: 22px;
}

.auth-form label {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.auth-form input {
    width: 100%;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 14px 15px;
    font: inherit;
    color: var(--color-text);
    background: #fff;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.auth-form input:focus {
    outline: none;
    border-color: rgba(31, 79, 130, 0.55);
    box-shadow: 0 0 0 4px rgba(31, 79, 130, 0.12);
    transform: translateY(-1px);
}

.button-primary {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    min-height: 50px;
    margin-top: 4px;
    border: 0;
    border-radius: 999px;
    padding: 0 22px;
    font: inherit;
    font-weight: 700;
    letter-spacing: 0.01em;
    color: var(--color-surface);
    background: linear-gradient(135deg, var(--color-primary), #2a619b);
    box-shadow: 0 14px 24px rgba(31, 79, 130, 0.24);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.button-primary:hover,
.button-primary:focus {
    transform: translateY(-1px);
    box-shadow: 0 18px 30px rgba(31, 79, 130, 0.28);
    filter: saturate(1.05);
}

.button-inline {
    margin-top: 26px;
    width: auto;
}

.auth-links {
    margin-top: 18px;
    text-align: center;
    font-size: 0.95rem;
}

.card-footer {
    margin-top: 28px;
    padding-top: 18px;
    border-top: 1px solid rgba(92, 107, 128, 0.18);
    text-align: center;
    font-size: 0.88rem;
}

.alert,
.helper-card {
    border-radius: var(--radius-md);
    padding: 14px 16px;
}

.alert {
    margin-bottom: 18px;
    border: 1px solid transparent;
    font-size: 0.94rem;
    line-height: 1.5;
}

.alert-error {
    background: var(--color-error-bg);
    border-color: rgba(159, 45, 45, 0.14);
    color: var(--color-error-text);
}

.alert-info {
    background: var(--color-info-bg);
    border-color: rgba(24, 74, 124, 0.12);
    color: var(--color-info-text);
}

.alert-success {
    background: var(--color-success-bg);
    border-color: rgba(29, 107, 67, 0.12);
    color: var(--color-success-text);
}

.helper-card {
    margin: 22px 0 16px;
    background: rgba(31, 79, 130, 0.05);
    border: 1px solid rgba(31, 79, 130, 0.08);
}

.helper-card p {
    margin: 8px 0;
    word-break: break-word;
}

@media (max-width: 640px) {
    .auth-card,
    .panel-card {
        padding: 28px 20px;
        border-radius: 20px;
    }

    .brand-logo,
    .brand-fallback {
        width: 82px;
        height: 82px;
    }

    h1 {
        font-size: 1.8rem;
    }

    .button-primary {
        width: 100%;
    }
}