:root {
    --bg: #edf2f7;
    --bg-strong: #e2e8f0;
    --card: rgba(255, 255, 255, 0.9);
    --card-border: rgba(148, 163, 184, 0.25);
    --text: #0f172a;
    --muted: #475569;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-soft: rgba(37, 99, 235, 0.09);
    --danger-bg: #fef2f2;
    --danger-border: #fecaca;
    --danger-text: #991b1b;
    --success-bg: #ecfdf5;
    --success-border: #a7f3d0;
    --success-text: #065f46;
    --shadow: 0 18px 45px rgba(15, 23, 42, 0.12);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(135deg, var(--bg) 0%, #f8fafc 100%);
    color: var(--text);
}

body {
    min-height: 100vh;
}

.login-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 32px 16px;
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.10), transparent 30%),
        linear-gradient(180deg, #edf2f7 0%, #f8fafc 100%);
}

.login-card {
    width: min(100%, 440px);
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 18px;
    box-shadow: var(--shadow);
    padding: 30px 28px 24px;
    backdrop-filter: blur(8px);
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 18px;
    color: var(--text);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.brand-mark {
    width: 30px;
    height: 30px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, #3b82f6 100%);
    color: #fff;
    font-size: 0.92rem;
    font-weight: 700;
    box-shadow: 0 8px 18px rgba(37, 99, 235, 0.2);
}

.heading-block {
    margin-bottom: 20px;
}

.eyebrow {
    margin: 0 0 8px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--primary);
}

h1 {
    margin: 0;
    font-size: clamp(1.9rem, 4vw, 2.3rem);
    line-height: 1.2;
    color: var(--text);
}

.login-form {
    display: grid;
    gap: 18px;
}

.field {
    display: grid;
    gap: 8px;
}

.field label {
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--muted);
    text-transform: uppercase;
}

.field input {
    width: 100%;
    min-height: 50px;
    border: 1px solid rgba(148, 163, 184, 0.4);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.75);
    color: var(--text);
    padding: 12px 14px;
    font-size: 1rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.field input:focus {
    outline: none;
    border-color: rgba(37, 99, 235, 0.7);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
    background: #fff;
}

.options {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    margin-top: -4px;
}

.remember {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.92rem;
    color: var(--muted);
}

.remember input {
    accent-color: var(--primary);
}

.btn-primary {
    appearance: none;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary) 0%, #3b82f6 100%);
    color: #fff;
    padding: 14px 18px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
    box-shadow: 0 10px 22px rgba(37, 99, 235, 0.22);
}

.btn-primary:hover {
    transform: translateY(-1px);
    filter: brightness(1.02);
}

.status-line {
    margin: 18px 0 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.alert {
    margin-bottom: 18px;
    border-radius: 10px;
    padding: 12px 14px;
    border: 1px solid transparent;
    font-size: 0.92rem;
}

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

.alert-ok {
    background: var(--success-bg);
    border-color: var(--success-border);
    color: var(--success-text);
}