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

html, body {
    height: 100%;
    background: var(--bg-primary, #0f0f1a);
}

.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1rem;
    background: var(--bg-primary, #0f0f1a);
}

.auth-card {
    background: var(--bg-secondary, #1a1a2e);
    border-radius: 24px;
    padding: 2rem;
    width: 100%;
    max-width: 480px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.35);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.auth-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-align: center;
    color: var(--text-primary, #ffffff);
    background: linear-gradient(135deg, #4cc9f0, #4361ee);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.form-group {
    margin-bottom: 1.25rem;
}

    .form-group label {
        display: block;
        margin-bottom: 0.5rem;
        color: var(--text-secondary, #9ca3af);
        font-size: 0.9rem;
        font-weight: 500;
    }

.form-control {
    width: 100%;
    padding: 0.8rem 1rem;
    background: var(--bg-primary, #0f0f1a);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: var(--text-primary, #ffffff);
    font-size: 1rem;
    transition: all 0.3s ease;
}

    .form-control:focus {
        outline: none;
        border-color: #4cc9f0;
        box-shadow: 0 0 0 3px rgba(76, 201, 240, 0.15);
    }

    .form-control::placeholder {
        color: rgba(255, 255, 255, 0.4);
    }

.checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

    .checkbox label {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        cursor: pointer;
        color: var(--text-secondary, #9ca3af);
        font-size: 0.9rem;
    }

    .checkbox input[type="checkbox"] {
        width: 18px;
        height: 18px;
        cursor: pointer;
        accent-color: #4cc9f0;
    }

.btn-block {
    width: 100%;
    padding: 0.9rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    margin-top: 0.5rem;
    background: linear-gradient(135deg, #4cc9f0, #4361ee);
    border: none;
    border-radius: 12px;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

    .btn-block:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 25px rgba(76, 201, 240, 0.4);
    }

    .btn-block:disabled {
        opacity: 0.6;
        cursor: not-allowed;
        transform: none;
    }

.alert {
    padding: 0.9rem;
    border-radius: 12px;
    margin-bottom: 1rem;
    font-size: 0.85rem;
}

.alert-danger {
    background: rgba(230, 57, 70, 0.1);
    border: 1px solid rgba(230, 57, 70, 0.3);
    color: #ff6b6b;
}

.alert-success {
    background: rgba(6, 214, 160, 0.1);
    border: 1px solid rgba(6, 214, 160, 0.3);
    color: #51cf66;
}

.auth-links {
    margin-top: 1.5rem;
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

    .auth-links a {
        color: #4cc9f0;
        text-decoration: none;
        font-size: 0.9rem;
        transition: color 0.2s;
    }

        .auth-links a:hover {
            color: #4361ee;
            text-decoration: underline;
        }

.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    margin-right: 0.5rem;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 600px) {
    .auth-card {
        padding: 1.5rem;
        max-width: 95%;
    }

    .auth-title {
        font-size: 1.5rem;
        margin-bottom: 1.2rem;
    }

    .form-control {
        padding: 0.7rem 0.9rem;
        font-size: 0.95rem;
    }

    .btn-block {
        padding: 0.8rem;
        font-size: 0.95rem;
    }

    .auth-links a {
        font-size: 0.85rem;
    }
}

@media (max-width: 380px) {
    .auth-card {
        padding: 1.2rem;
    }

    .form-group {
        margin-bottom: 1rem;
    }

    .auth-title {
        font-size: 1.3rem;
    }

    .btn-block {
        padding: 0.7rem;
    }
}