:root {
    --color-primary: #00cd96;
    --color-bg: #f8f9fa;
    --color-card: #ffffff;
    --color-text: #1a1a2e;
    --color-text-secondary: #6b7280;
    --color-danger: #dc2626;
    --color-border: #e5e7eb;
    --radius: 10px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--color-text);
    padding: 1rem;
}

.login_card {
    width: 100%;
    max-width: 380px;
    background: var(--color-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 2rem 1.75rem;
}

.login_title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.login_subtitle {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.login_form {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.login_label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-top: 0.5rem;
}

.login_input {
    width: 100%;
    padding: 0.65rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 1rem;
    outline: none;
}

.login_input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 205, 150, 0.15);
}

.login_error {
    color: var(--color-danger);
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

.login_button {
    margin-top: 1rem;
    width: 100%;
    padding: 0.7rem;
    border: none;
    border-radius: 6px;
    background: var(--color-primary);
    color: #fff;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
}

.login_button:hover {
    filter: brightness(0.95);
}

.login_button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}