:root {
    --surface-bg: #0a0a0c;
    --surface-1: #141414;
    --surface-2: #1e1e1e;
    --border-subtle: rgba(255, 255, 255, 0.08);
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --accent-flat: #e53935; 
    --success: #4CAF50;
}

[data-theme="light"] {
    --surface-bg: #f4f4f5;
    --surface-1: #ffffff;
    --surface-2: #f4f4f5;
    --border-subtle: #e4e4e7;
    --text-primary: #09090b;
    --text-secondary: #71717a;
    --accent-flat: #dc2626; 
    --success: #16a34a;
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--surface-bg);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.25s ease, color 0.25s ease;
}

.auth-box {
    background: var(--surface-1);
    padding: 32px 24px;
    border-radius: 16px;
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-subtle);
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

.auth-box img {
    width: 56px;
    border-radius: 12px;
    margin-bottom: 16px;
}

.auth-box h2 {
    margin: 0 0 8px 0;
    font-size: 22px;
}

.auth-box p.sub {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 24px;
}

.auth-box input {
    width: 100%;
    padding: 14px;
    margin-bottom: 12px;
    background: var(--surface-2);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    outline: none;
    transition: 0.2s;
    font-size: 14px;
}

.auth-box input:focus {
    border-color: var(--text-secondary);
}

/* Button Layout */
.btn-group {
    display: flex;
    gap: 10px;
    margin-top: 5px;
}

.btn-action {
    flex: 1;
    padding: 14px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
    font-size: 15px;
}

.btn-login {
    background: var(--surface-2);
    color: var(--text-primary);
    border: 1px solid var(--border-subtle);
}

.btn-login:hover {
    background: var(--border-subtle);
}

.btn-request {
    background: var(--text-primary);
    color: var(--surface-1);
}

.btn-request:hover {
    opacity: 0.9;
}

.btn-action:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#auth-msg {
    margin-top: 16px;
    font-size: 13px;
    font-weight: 500;
    min-height: 20px;
    line-height: 1.4;
}