:root {
    --primary-bg: #0A0A0A;
    --anthracite-surface: #262626;
    --anthracite-btn: #383838;
    --accent-red: #E63946; /* Blood Strike Red */
    --text-white: #FFFFFF;
    --text-gray: #A0A0A0;
}

body {
    background-color: var(--primary-bg);
    color: var(--text-white);
    font-family: 'Inter', sans-serif;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.auth-card {
    background: var(--anthracite-surface);
    width: 380px;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.auth-header h1 {
    font-size: 28px;
    letter-spacing: 2px;
    margin-bottom: 5px;
    text-align: center;
}

.auth-header p {
    color: var(--text-gray);
    text-align: center;
    font-size: 14px;
}

.input-group {
    margin-top: 25px;
}

input {
    width: 100%;
    background: #1A1A1A;
    border: 1px solid #333;
    padding: 12px;
    border-radius: 8px;
    color: white;
    margin-bottom: 15px;
    box-sizing: border-box;
    transition: 0.3s;
}

input:focus {
    border-color: var(--accent-red);
    outline: none;
}

.btn-primary {
    width: 100%;
    background: var(--anthracite-btn);
    color: white;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s;
    text-transform: uppercase;
}

.btn-primary:hover {
    background: #4A4A4A;
    box-shadow: 0 0 15px rgba(230, 57, 70, 0.2);
}

.toggle-link {
    text-align: center;
    margin-top: 20px;
    font-size: 13px;
    color: var(--text-gray);
    cursor: pointer;
}

.toggle-link span {
    color: var(--accent-red);
    font-weight: bold;
}