:root {
    color-scheme: light;
    --page-bg: #f4f6f8;
    --card-bg: #ffffff;
    --card-border: #d9dee5;
    --text-primary: #16202a;
    --text-secondary: #5c6773;
    --input-border: #bcc6d2;
    --input-focus: #3566d6;
    --button-bg: #1f4fbf;
    --button-bg-hover: #173c91;
    --button-text: #ffffff;
    --error-text: #b42318;
    --error-bg: #fef3f2;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at top, rgba(53, 102, 214, 0.08), transparent 32%),
        linear-gradient(180deg, #f8fafc 0%, var(--page-bg) 100%);
    color: var(--text-primary);
    font-family: "Segoe UI", Helvetica, Arial, sans-serif;
}

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

.login-card {
    width: min(100%, 420px);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 32px;
    box-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
}

h1 {
    margin: 0;
    font-size: 1.75rem;
}

form {
    margin-top: 24px;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    background: #fff;
    color: var(--text-primary);
    font: inherit;
}

input[type="text"]:focus,
input[type="password"]:focus {
    border-color: var(--input-focus);
    outline: 3px solid rgba(53, 102, 214, 0.18);
    outline-offset: 0;
}

p {
    margin: 0 0 18px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
}

button[type="submit"] {
    width: 100%;
    margin-top: 8px;
    padding: 12px 16px;
    border: 0;
    border-radius: 8px;
    background: var(--button-bg);
    color: var(--button-text);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

button[type="submit"]:hover {
    background: var(--button-bg-hover);
}

.error-list {
    margin: 0 0 18px;
    padding: 10px 12px;
    list-style: none;
    border-radius: 8px;
    background: var(--error-bg);
    color: var(--error-text);
    font-size: 0.92rem;
}

.errorlist {
    margin: 8px 0 0;
    padding-left: 18px;
    color: var(--error-text);
    font-size: 0.92rem;
}

@media (max-width: 480px) {
    .login-card {
        padding: 24px 20px;
    }
}